Indonesia Conference Directory

Corresponding Author
Muchammad Zaenal Muttaqin

Institutions
a) Universitas Gadjah Mada, Jl. Grafika No. 2 Kampus UGM, Yogyakarta 55281, Indonesia

b) Universitas Islam Riau, Jl. Kaharuddin Nasution 113 Pekanbaru
28284, Indonesia

*muchzaenalmuttaqin[at]eng.uir.ac.id

Abstract
Transport sector was becoming important role for general nation development, including Indonesia. One of the increasing transport activity was due to technology used by people, like smartphone, online shop, etc, In this paper, we present an overview of transport development by time based on a comprehensive literature and practical report in the real world. This paper also discussed how chance Indonesia overcomes transport demand to reach sustainability in Indonesia. Based on this review, transport development from past, current and future built by smart mobility concept through technology. Many alternative concept related with technology has been implemented as the solution for transport problem in the current also predicting the future, like organizing about transport plan by GPS, monitoring transport activity by CCTV, using Artificial Intelligent (AI) system to improve comfortability, and safety in the public service and reach more about alternative energy source for future transport based from environmental friendly. Indonesia has a big chance to adopt them but also consider about existing condition in Indonesia, like heterogeneous cultural and economical reason. Implementation about future transport system supported by transport policies was becoming primary key to reach sustainability in Indonesia.

Keywords
Sustainability; Future Transport; Technology; Indonesia; Adaptation;

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/xXA8REgVtc9a

Corresponding Author
MIFTAHUL JANNAH

Institutions
[1] Geological Engineering, Universitas Islam Riau
Jalan Kaharuddin Nasution No. 113 Perhentian Marpoyan, Pekanbaru, Riau 28284.
*mjmiftaaa[at]gmail.com
[2] Public Works Departement, Water Resources Departement, Kepulauan Anambas

Abstract
Davit Kecils Dam is an irrigation area that located in Ulu Maras Village, East Jemaja District, Kepulauan Anambas Regency, Kepulauan Riau Province. The need of geotechnical study is important to determine the soil properties and soil stability of the study area. Methods used are field study by taking soil samples and laboratorium test such as atterberg limits analysis, sieve analysis and direct shear stress that useful for soil resistence identification. Based on laboratorium test result, the range of Wl value is 49,28 - 95,55%, range of Wp value is 26,19 - 33,79% and range of Ip value is 20,21 - 58,76%. in the other hand, Hb.2, Hb.3, Hb.6 and Hb.7 are non plastic soils. The range of direct shear stress (phi) obtained are 25,33 - 34,33. Soil grain size identified from sieve analysis is gravel - clay. Based on the analysis result, stability of davit kecils dam that was observed from normal water condition and flood water condition are categorized into strong-safe dam characterized by sufficient eccentricity an bearing capacity control. In addition, the dam is withstand rolling and sliding.

Keywords
dam, soil stability, atterberg limit, sieve analysis, direct shear stress

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/kPa2nuBV97JL

Corresponding Author
Rezky Aprilyanto Wibowo

Institutions
Institut Teknologi Sepuluh Nopember
Fakultas TEKNIK SIPIL, LINGKUNGAN, DAN KEBUMIAN

Abstract
Corrosion of steel in reinforced concrete (RC) can compromise the structural integrity and cost billions of dollars every year. To reduce these impacts, finding the new, sustainable, eco-friendly, and cost-efficient construction materials has a significant impact in improving the sustainability of buildings and economic increase. To meet the above mentioned requirements, this literature review aims to examine the feasibility and sustainability of Glass Fiber Reinforcement Polymer (GFRP) bars as an alternative to steel in reinforced concrete. The method used is a Systematic Literature Review (SLR) of 21 relevant international journals from 2011 to 2019. The results show that GFRP-RC can be used as cost-effective solution to steel corrosion and sustainable alternative to steel due to the least amount of CO2 production rather than other types of Fiber Reinforcement Polymer. But the strength and durability as a feasible option for RC structures still remain controversial. Recently, significant improvement found in the prediction of deflection and stiffness of the beams. GFRP bars used as longitudinal reinforcement can resist compressive stresses in excess of 700 MPa and GFRP lateral reinforcement can confine concrete core more effectively than steel. Recommendations for future implementation include establishing building codes, improving recyclability and lowering initial costs

Keywords
Glass Fiber Reinforcement Polymer; Steel; Corrosion; Sustainability; Reinforced Concrete.

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/LmE2wqzkXMA9

Corresponding Author
Laveda Nidya Irianti

Institutions
Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

Abstract
As design is an important part of the process to create a product, a good design concept is needed. Good design is a concept which is commonly used in the context of urban design. The aim of the urban design is to deliver social sustainability values to the community such as by improving economic life, social relations, and providing safe, comfortable and easily accessible public spaces for all people regardless of physical ability. The concept of good project design have been implemented in several fields, such as technology, architecture, and urban planning. However, still limited has been conducted in the area of construction management. This paper investigated several indicators of a good design in educational building. Research variables were identified through an extensive literature review. Preliminary survey and pilot test were performed before the questionnaire survey to verify the variable as well as to ensure that the questionnaire has been well understood by the potential respondent. Data were analysed using mean to rank the stakeholders- perceptions from the government, consultants and communities as the end users. The results showed five highest criteria to measure a good project design for educational building in Surabaya.

Keywords
design, building, good project design.

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/TqzguyWjm789

Corresponding Author
T. LISTYANI R. A .

Institutions
Sekolah Tinggi Teknologi Nasional Yogyakarta

Abstract
The potential of groundwater is part of water resources that need to be studied to determine its feasibility for living needs. One of its potentials involves its hydrochemistry. This hydrochemical study of groundwater has been carried out in Panggang and surrounding areas, Gunungkidul on the Panggang Hydrogeology Sub-system. Field hydrogeological surveys and laboratory tests of two groundwater samples have been used for hydrochemical analysis. Surface water sometimes gathers in doline morphology to then infiltrate into the soil and rocks through fractures, cracks/fissures, and dissolution cavities/conduit. Groundwater is characterized by limestone aquifers with the inter-grain flow and secondary porosity channel/network flow through cavities. Aquifers are dominated by reef limestones, with secondary holes sometimes large enough to form caves. Karst springs are found as a permanent or seasonal source. Groundwater comes out of the karst aquifer, especially in caves resulting from dissolution on the surface and below the surface. Groundwater in the springs studied has Ca, Mg-bicarbonate and Ca-bicarbonate types. The bicarbonate facies shows fresh water characteristic, young age with the dominant hydrochemical processes include simple dissolution and ion exchange. Low TDS and Cl contents indicate that groundwater is in the recharge zone. Although it is carbonate, based on its hydrochemical, the groundwater is still suitable for use as drinking water.

Keywords
groundwater, hydrochemical, hydrogeological process, feasibility

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/GjnwvCLd3kWP

Corresponding Author
Emil Adly

Institutions
Civil Engineering Department, Universitas Muhammadiyah Yogyakarta, Brawijaya Street, Yogyakarta

Abstract
The northern railway of Cirebon-Semarang route is vulnerable for natural hazards such as flooding and subsidence as it is located close to the coastal area and has complex geomorphological condition. This study aims to identify and map the potential of natural hazards that can affect the Cirebon-Semarang railway by using a Geographic Information System (GIS). The valuation method used the landscape analysis approach used to determine the disaster vulnerability level. To make the GIS maps, topographic maps and geological maps of BAKORTANAL or BIG (Geospatial Information Agency) and the Geological Research and Development Center were used as the main sources. The results showed that the geomorphological conditions of the Cirebon-Semarang railway line predominantly had structural, marine and alluvial landforms which identified the high potential for flood and depression in the study area

Keywords
Flood, Geographic information system, Railway, Subsidence

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/EAJcVpDBuG9k

Corresponding Author
Faradilla Ayu Rizki Shiami

Institutions
a) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia
*faradillashiami[at]gmail.com
b) Civil Engineering Department, Faculty of Civil, Environmental and Geo Engineering, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia

Abstract
The rainfall data used in the hydrology analysis is obtained from the precision of rainfall data measurement and the condition of the rain station. The higher density of rain station network, the data obtained will be more accurate, but it should be noted other aspects such as economic aspects. The best network is obtained by conducting a rationalization analysis to get the most effective number and location of rain station This research obtain rainfall data from satellite for analysis as a solution to the problem of data limitations while others only use ground data. First, the existing rain station network is evaluated whether it comply with WMO (World Meteorological Organization) standards or not. Then regression analysis is carried out on ground and satellite rainfall and water discharge data to find out the correlation between them. Next, the rain station network is rationalized using Kagan Rodda method, which mean there are some changes in the number and location of the station. The regression analysis is then carried out on the new rain station network. This network is then calibrated using measured water discharge data. This research is located in Kemuning River Catchment Area, Madura Island.

Keywords
Rain station network; Rationalization analysis; Rainfall satellite data

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/VXvzTGRhu3Ln

Corresponding Author
Nursetiawan Nursetiawan

Institutions
(1) Universitas Muhammadiyah Yogyakarta

Abstract
The Yogyakarta region is crossed by large rivers such as the Progo River, Opak River, Oya River, Winongo River, Boyong-Code River, Gajah Wong River, Bedog River, and Serang River. Some areas on the banks of these rivers often experience flooding during the rainy season. There are three rivers that cross the center of the Yogyakarta region and through Sleman Regency, Yogyakarta City and Bantul District, namely Code River, Gajah Wong River and Winongo River. The contribution of these three rivers to flood events in Yogyakarta is considered significantly high because the river passes through urban areas, settlements, agricultural land, and densely populated areas. In this study a hazard level map and the level of vulnerability of floods are created in those three watersheds. Map making starts with a study of hazards and vulnerabilities using the Analytical Hierarchy Process (AHP) method, weighting, scoring, and continued with a map depiction using Geographic Information Systems (GIS). Map of research results in the form of hazard level maps and flood vulnerability levels for Code watershed, Gajah Wong and Winongo. From the map, it can be concluded that most watershed areas of the Code are included in the level of moderate danger and low level of vulnerability. The entire Gajah Wong watershed is included in a moderate level of danger and most of them are at a high level of vulnerability, while most of the Winongo watershed has a high level of danger and vulnerability.

Keywords
Flood vulnerability, flood risk, flood hazard, GIS

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/g6UXfZ92kMFe

Corresponding Author
Ryobi Irfanto

Institutions
(a) Student of Civil Engineering Master Program, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung. Email: ryobiirfanto[at]gmail.com
(b) Student of Civil Engineering Doctoral Program, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung. Email: fauziah.scs.maisarah[at]gmail.com
(c) Civil Engineering Lecturer, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung. Email: abduh[at]si.itb.ac.id

Abstract
Managing the purchase of construction commodities is very important for small-scaled contractors because of the limited funding they have. Commodities in construction projects are very diverse so managing commodity purchases requires priority in their allocation, namely in strategic commodities. Strategic commodities have the definition that the commodity has a large value and in the long term its availability affects the construction project. This study aims to identify strategic construction commodities on road infrastructure projects carried out by small-scaled contractors. The survey method is carried out to identify strategic commodities and confirm the value of commodity utilization from the historical data of the project. The results of the study show that sand, cement, reinforcing steel, concrete, asphalt, and aggregate are commodities with a strategic level of assessment based on the Kraljic matrix.

Keywords
strategic commodities, small-scaled contractor, Kraljic matrix

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/YgLrdjh8x3AB

Corresponding Author
Asep Yayat Nurhidayat

Institutions
Agency for the Assesment and Application of Technology, (BPPT) Jakarta

Abstract
Due to the increasing demand for travel by train in recent years, the large potential number of passengers in Jakarta - Surabaya corridor needs to be anticipated with adequate transportation system planning so that the bottlenecks on available transportation network system can be minimized. This paper analyzes the potential competition between the demand of executive passenger train and Jakarta-Surabaya high-speed train which will be built by the Government as planned. This study only use travel time variables and ticket rates as independent variables between executive passenger train and high-speed train, then stated preference methods and binomial logit models are used as tools for processing data. As a result, we believe that the operation of Jakarta-Surabaya high-speed train will have a negative impact on the demand of executive passenger train on this route.

Keywords
demand, high speed train, travel time, stated preference, binomial logit model

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/YpPHKJch9ny8

Corresponding Author
Jadfan Sidqi Fidari

Institutions
Water Resources Engineering, Universitas Brawijaya

Abstract
Sutami Dam has the largest reservoir In East Java. This reservoir has been operating for more than 46 years (operating in 1972 and the latest data as a reference in 2018). Data Aspect for analysis then calibrate with data in 1972 for comparison and to see the trend of sediment for 46-year operation. To find out the sediment carrier area, the review point is selected. The review point as a source of sediment in the Sutami Reservoir is divided into two sediment points with direct inflow to the Sutami Reservoir (Metro River) and the Sengguruh Reservoir outflow (Brantas River and Lesti River) and compare with Erosion from the field. These three points were calculated by sediment discharge to determine the most influential sediment carrier points in the Sutami Dam. The greatest Sediment carrier is from the Sengguruh Dam outflow (Brantas River) with Qs = 2.34 kg/s (2018), then from the Metro River with Qs = 2.27 kg /s (2018).

Keywords
water resources, Sediment

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/tyFGuKUh26Ac

Corresponding Author
Marthinus Alexander Bastian

Institutions
Structural Engineering,Departmen of Civil Engineering Sepuluh Nopember Instiute of Technology
Jalan Raya ITS, Surabaya 60111, Indonesia
*alexsandrobastian[at]gmail.com

Abstract
Corrosion is one of the resistance problems of a concrete structure that can cause permanent damage to the structure. Replacement of overall structural elements, which have been damaged by corrosion, is considered expensive. Therefore, this study will be focused on the application of ECC concrete as a repair material for structural damage. ECC is one type of concrete that uses PVA fiber as its constituent. It has properties such as reinforcing steel which are characterized by strain hardening with several fine cracks. This study used galvanostatic method to accelerate the corrosion process. The corrosion was initiated by applying constant electricity current of 1 Ampere until the spalling occurred at the concrete. The damaged part of concrete cover than repaired with ECC concrete. Finally, the beam was tested with four point bending scheme to evaluate its remaining flexural capacity. The test results showed that the corroded beam that repaired with ECC layer on concrete cover had 26 mm deflection points when reached 200 kN load in ultimate state. This result is close to that conventional beam had before corrosion, which is 28 mm 210 kN when it reached its ultimate state.

Keywords
Corrosion, ECC, repairing, flexural capacity.

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/ZbCVz3QyPqJc

Corresponding Author
Ratni Nurwidayati

Institutions
Civil Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat,
Banjarmasin, Indonesia
ratninurwidayat[at]ulm.ac.id

Abstract
In this paper, the effect of surface texture and composition of uniform coarse aggregate on preplaced-aggregate concrete is presented. The preplaced-aggregate concrete (PAC) or two-stage concrete is concrete produced by grouting the cement paste into formwork which is filled with coarse aggregate first. The grouting material fills the voids between aggregate. Preplaced aggregate concrete differs from conventional concrete that it is contains a higher percentage of coarse aggregate. Marbles are used as coarse artificial aggregate. Three kinds of the roughness of the surface of marbles are evaluated. The diameters of marbles are 10mm and 15mm. The data obtained has indicated that the rougher the surface of marbles, the higher the compressive strength of PAC, the optimum composition of coarse aggregate is 70% and 30% of diameter marbles of 10mm and 15mm respectively, the roughness of the surface of marbles does not influence the elastic modulus of PAC significantly and the concrete shrinkage is less the conventional concrete.

Keywords
Preplaced-aggregate concrete; grouting; cement paste; marble; shrinkage

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/GCtygnQ9b2uU

Corresponding Author
Hanugerah Purwadi

Institutions
1Doctoral Program on the Department of Water Resources, Faculty of Engineering, University of Brawijaya, Indonesia
2Department of Water Resources, Faculty of Engineering, University of Brawijaya, Indonesia

Abstract
Abstract. A special attention for Wadaslintang Irrigation System is taken into account, due to its expansive reach services. This irrigation area consists of a vast 31,853 ha, includes two regencies that are Kebumen and Purworejo. Beside the irrigation interests, the Wadaslintang Reservoir (122 million m3) is also using to supply the need of drinking water in the upstream area until the downstream approximately 0,4 m3/s and electricity services. In the downstream area, the system is connected with the Sempor System Irrigation (6.100 ha) especially in the Kejawang sub-irrigation system (480 ha). The connected irrigation system is used to ensure the availability of water during the dry season because the water discharge from the Sempor irrigation system is not enough to irrigate the paddy fields in this area. The study intends to determine the adequacy of water used for various purposes. The methodology consists of the balancing in water, food, and energy. In practice, water utilization in the irrigation system has adapted to the needs of drinking water without reducing crop productivity.

Keywords
irrigation system services, balance food-water-energy, water utilization

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/KL7tcCYh96wk

Corresponding Author
Muhammad Zudhy Irawan

Institutions
a) Department of Civil and Environmental Engineering, Universitas Gadjah Mada, Jl. Grafika No. 2 Kampus UGM, Yogyakarta, 55281, Indonesia
* zudhyirawan[at]ugm.ac.id
b) School of Business and Management, Institut Teknologi Bandung, Indonesia
c) Faculty of Civil Engineering, Universiti Teknologi Mara, Malaysia

Abstract
Since often encountered the missing prediction of travel mode choice by using the concept of random utility maximization (RUM) for Indonesian context, this study proposed a theory of random regret minimization (RRM) aiming to more precisely predict the chosen travel mode and to increase the model fit. Three variances of RRM were implemented in this study: Classical RRM, µRRM, and PRRM. Meanwhile, Yogyakarta and Palembang were chosen as a case of the study by involving 708 respondents in both cities. A stated preference survey was carried out by offering six scenarios to the respondents. We implement the value of final log-likelihood, rho-square, Akaike and Bayesian Information Criterion, and hit rate to compare the model fit. We also calculate the value of travel time saving, and the elasticity of travel time and travel cost. The result shows that by excluding the rho square, RRM outperforms RUM in both cities. The µRRM produces the best model fit in a case of travel mode choice in Yogyakarta, while there is a tendency that PRRM produces a better model fit than µRRM in Palembang. We also found that RRM tends to generate a higher VTSS, travel time and cost elasticity than RUM. Travellers in both cities also tend to be more sensitive to change in travel time than travel cost.

Keywords
travel mode choice; multinomial logit model; stated preference survey; elasticity; the value of travel time saving

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/MegDEqftr8NC

Corresponding Author
Pradipta Nandi Wardhana

Institutions
(a) Program Studi Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Jalan Kaliurang Km 14.5 55584, Indonesia

Abstract
. Juana River is a river in Indonesia having high vulnerability degree toward flood occurence. The major factors causing flood in Juana River are river slope having value 0,00001, and narrowing river channel. Therefore the river experiences discharge capacity reduction. Juana River flood mapping is necessary to analyze extent of inundated area, especially regarding types of land utilization. This study used GIS software to process Alos Palsar image as Juana Valley topography, HEC-RAS 4.1 application for modeling the unsteady river flow or river analisys system (RAS), and HEC-GeoRAS 10.2 application to convert HEC-RAS 4.1 results into GIS software. As hydraulic modelling boundary condition, this research used 52 Juana sub basin discharge having return period 50 years and tides level at Juana Estuary. Research results showed that the extent of flood due to Juana River discharge was 37406 ha in both Kudus and Pati. Inundated area in Kudus consisted of 449,1 ha of fields, 8772,6 ha of rice fields, and 628,8 ha of settlements. While affected area in Pati were 1339,8 ha of fields, 17187,6 ha of rice fields, 6713,7 ha of ponds, and 2314,4 ha of settlements.

Keywords
Juana River, HEC-RAS 4.1, HEC-GeoRAS 10.2, Flood Inundation

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/4P8ZtMkNWvaq

Corresponding Author
Taufiq Ilham Maulana

Institutions
Department of Civil Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta, Brawijaya Street, Bantul, Yogyakarta, 55183, Indonesia

Abstract
Earthquake has been one of many disaster issues in Indonesia since many victims were affected. A lot of buildings, especially mid rise buildings type collapsed at the earthquake events because many of its designs were not considering big force that happened. In Indonesia, National Center for Earthquake Studies has published new seismic hazard map in 2017, however few studies have checked the building with the new hazard map. This research performed linear analysis of structural buildings. Reinforced concrete building with the same floor plan and typical structural dimensions was modeled as object of the research, assuming that the mid rise building type in Indonesia is similar with the model. The earthquake loads given to the model were three different time histories which were matched by response spectrum retrieved from hazard map for 99 big cities in Indonesia. Displacements for each floor were compared to the limit stated in Building Earthquake Code 2012, which is 2 percent of its height. The study shows that displacement of same buildings located in some cities are exceed the limit. For further research, the improvement of buildings with additional affordable structural members can be developed.

Keywords
linear displacement analysis, structural analysis, earthquake loads, time history, new earthquake hazard map 2017

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/ZWgE7Gvpzd8u

Corresponding Author
Muchlisin ST, M.Sc.

Institutions
Department of Civil Engineering,
Faculty of Engineering,
Universitas Muhammadiyah Yogyakarta

Abstract
Yogyakarta is one of the cities in Indonesia that has an agglomeration area by connecting 3 districts ring road. One of the biggest problems in the area is the intersection, particularly signalized intersections. The purpose of this study is to create a database, identify and map the road network at each intersection that can be used as a transport policy for the government. The research method is using ArcGis program by collecting various data on the Yogyakarta urban intersections that have been studied using the 1997 Indonesian Highway Capacity Manual method on the analysis of signal intersections. To produce a GIS map, map of Yogyakarta Administration and Google Earth Image maps are used as the main source. From the 20 intersections studied, the results showed that urban intersections, the road network tended to experience a poor level of service intersection (LOS F) with the percentage in 97%. The percentage of queue lengths tends to be as high as 62%, and percentage degree of saturation with a scope limit (LOS F) of 57%.

Keywords
ArcGis; intersection; mapping; road network; level of service

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/6cnqMLAuTDGv

Corresponding Author
Danny Setiawan

Institutions
University of Technology Yogyakarta

Abstract
The urban public transportation in Yogyakarta is the only Trans Jogja Bus which operates 129 units serving 17 routes. In its development, the Trans Jogja Bus operation had obstacles, specifically the sections number and intersections occur traffic congestion and mixed traffic, which resulted in the poor the performance of the Trans Jogja Bus in timely service. Road-widening and new road construction are very difficult to be implemented in Yogyakarta, caused by the limit area. This condition requires handling in form of study about the existence of a priority system for Trans Jogja Bus operations on the road. The most possible three solutions in the application of the Trans Jogja bus service priority system. First solution is by applying the ATCS (Area Traffic Control System) system at each intersection that is traversed by Trans Jogja buses. The second is by using an online application system that could provide information to Trans Jogja bus passengers on the existence of a bus, thereby reducing passenger waiting time. And the last is by implementing the flow bus lane and contraflow bus lane on 17 Trans Jogja bus routes. To realize the solutions, implementation of the priority system for Trans Jogja buses require to executes in stages, specifically in the short and medium term (by applying the Trans Jogja bus section) if the evaluation shows increasing the performance of Trans Jogja buses in travel time, headway, and load factor services, then the priority application could be applied in the long term or all Trans Jogja bus routes.

Keywords
Urban Public Transport, Bus Priority, Performance, Routes

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/Cx8Vvgb7mdRa

Corresponding Author
Sri Sumarni

Institutions
Sebelas Maret University

Abstract
Brick making is a building material as an alternative to brick which is made as a mixture of cement, sand and water with a certain composition and serves as a filler material for walls. Batako which is needed for high compressive strength and light as heavy as possible after absorption of small water. Alternative materials that can be used as a substitute for building blocks are using fine rubber fiber aggregates. The purpose of this study was to determine the optimal value of paving blocks with aggregate rubber tire waste from compressive strength, specific gravity and water absorption of rubber paving blocks. The research method is quantitative research with a true experimental approach in the laboratory. Research results include: Compressive strength, specific gravity and uptake of rubber concrete paving water found in variations of 5%, among others: 12,791 Mpa; 1882.81 kg / m3; 13.82%. Based on SNI, the value is entered into quality brick 1

Keywords
brick making, rubber tire material, compressive strength, density, water absorption

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/HZ3rEFT7yCYe

Corresponding Author
Sri Sumarni

Institutions
Sebelas Maret University

Abstract
Tire production in Indonesia, the number of which continues to increase from year to year with a large amount causes the availability of abundant rubber tire waste, this waste has not been widely used and has unravelable properties that can cause environmental pollution. Therefore in this study we will develop concrete innovations that are environmentally friendly. The purpose of this study was to determine the optimal value of concrete with aggregate of rubber tire waste from compressive strength, tensile strength, elastic modulus and density of rubber concrete. The research method is quantitative research with a true experimental approach in the laboratory. The results of the study included: Maximum compressive strength of rubber concrete was found in a variation of 5% with a strength of 19.42 MPa. Maximum split tensile strength of rubber concrete was found in a variation of 5% with a strength of 1.70 MPa, The weight of the minimum content of rubber concrete is found in a variation of 5% with a strength of 2418.02 kg / m3.

Keywords
Rubber, green concrete, Compressive Strength

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/dc2tjxGFDaur

Corresponding Author
Riska Dewi Wijayanti

Institutions
a) Student of Civil Engineering Department, Institut Teknologi Sepuluh Nopember (ITS)
Sukolilo, Surabaya, 60111, Indonesia
* riska.dw[at]gmail.com
b) Civil Engineering Department, Institut Teknologi Sepuluh Nopember (ITS) Sukolilo, Surabaya, 60111, Indonesia
c) Technology Management Department, Institut Teknologi Sepuluh Nopember (ITS) Cokroaminoto 12 A, Surabaya, Indonesia

Abstract
The availability of decent drinking water is one indicator of the welfare of the Indonesian people as stated in the universal access target of 100% drinking water service in 2019. The Central Government through the Provincial Water Supply Working Unit assists with WSS Infrastructure Development Programs as a stimulant for Local Governments in meeting drinking water service targets. However, the limitations of the APBN budget have resulted in the need to prioritize the selection of the programs. The program selection method was prepared by identifying the existing conditions and evaluating the functioning of assets in each district. The priority sequence of the program was carried out by the Multi-Criteria Analysis (MCA) approach. Determination of priority criteria based on Strategic Policy for WSS Development and WSS Evaluation Guidelines. The priority sequence is the result of a calculation between the weighting of district criteria that carried out by the Provincial Working Unit, and the WSS unit by the Provincial Working Unit and district stakeholders with Borda analysis method. The application of this method resulted in a sequence of priority programs which could be a recommendation for the Provincial Water Working Unit to determine the selection of WSS Infrastructure Development Programs.

Keywords
Water Supply System; WSS infrastructure; Priority; Multi Criteria Analysis

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/xH7kurfbX8ZB

Corresponding Author
Moh Nur Sholeh

Institutions
a) Civil Engineering, Vocational School, Diponegoro University
Jalan Prof. Soedarto, SH, Semarang 50275, Indonesia
*) mohnursholeh[at]live.undip.ac.id
b) Minister for Public Works and Human Settlements
Jalan Pattimura No. 20, Jakarta 12110, Indonesia
c) PT Adhi Karya (Persero) Tbk
Jalan Raya Pasar Minggu KM. 18, Jakarta 12510, Indonesia

Abstract
Good performance of construction workers will affect the productivity of project work. Reinforcement work is one of the important work items in the structure work to be interesting to analyze. The purpose of this study is to monitor waste workers on a projects reinforcement work. The research method with the Method Productivity Delay Model (MPDM), a technique to measure, predict, and improve the productivity of a construction method by identifying delays that occur in several cycles of an operation. The results showed that there were three types of waste workers: material waste of 0.12%, technical waste of 0.04%, and behavioral waste of 10.10%. While the coefficient index for each worker is reinforcement workers 0.074, head of reinforcement workers 0.018, and foreman 0.009. This result will be input for the contractor as an evaluation in the supervision of the reinforcement work.

Keywords
MPDM; Reinforcement; Waste; Workers

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/DGRw4fz6bjaJ

Corresponding Author
Wiwik Dwi Pratiwi

Institutions
Shipbuilding Institute of Polytechnic Surabaya (SHIPS)

Abstract
In recent decades, fly ash has been used as a substitute cementitious material (SCM) in doses of more than 50%. Because fly ash has a lower reactivity than cement, the high-volume fly ash replacement causes a relatively large decrease in strength. One way to anticipate this is the addition of alkali activators. A mixture of ordinary Portland cement (OPC), fly ash and alkali activator is so called as hybrid alkaline cement. This research observed the differences in hydration along with the change in dose activator. The precursors were composed of 20% OPC and 80% fly ash. The difference in hydration reaction was observed by scanning electron microscopy (SEM) technique. The results of the study recommend a maximum pH of a hybrid alkali is 12.08.

Keywords
hybrid alkaline cement, SCM, SEM

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/Cnj8EbGgtkDz

Corresponding Author
Elizar -

Institutions
Departement of Civil Engineering, Universitas Islam Riau,
Pekanbaru, 282824, Indonesia
elizar[at]eng.uir.ac.id

Abstract
Construction industry has been developing rapidly around the world. In Indonesia, the construction industry plays a significant role in the economic sectors. One of problems in construction management is construction waste. It has major impact on cost, time and quality of construction management. To reduce these negative impacts, it needs a comprehensive understanding on the cause factor of construction waste and management. The aim of the study is to examine the model of relationship between construction waste to cost and time that impacts quality of management project. The variable of construction waste was identified from interviews and site observation. Variable and Indicator of cost and time founded from Supply Chain Operations Reference (SCOR) Model approach. A survey was carried out through a structured questionnaire. The respondents are been experienced people in construction and management of building projects. In this earlier study, questionnaires were completed by 383 respondents. Data was analyzed with Structural Equation Model (SEM) with the aid of Analysis of Moment Structures (AMOS) statistical package. The results shown that the cause factor of construction waste has correlation by cost and time with path coefficient value of 0.54. Correlation of cost and time with path coefficient value is 0.51 with value of significantly 0.05. It has indirectly an impact on quality of construction management system. The finding will help construction practitioners to reduce construction waste and gives better understanding to improve construction management sustainability.

Keywords
Cosntruction Waste, Management, Time, Cost, Infrastructure, Asset

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/rD8ZF7xwucRA

Corresponding Author
Muchlisin ST, M.Sc.

Institutions
Universitas Muhammadiyah Yogyakarta

Abstract
Kentungan Intersection is an intersection that always having a traffic jam at the peak hours. Traffic congestion at Kentungan Intersection is caused by highly vehicle volume exceeding the intersection capacity. The type of this intersection is flat intersection. Thus, its need to evaluate from geometric view with the ways of changing the type of the intersection to elevated intersection (interchange). Elevated intersection is consisting of conventional and unconventional. Elevated conventional intersection is commonly used in Indonesia like flyover or underpass. This study chooses one of the unconventional intersections called Single-Point Urban Interchange (SPUI). SPUI provides vehicle movement more and efficiently than others type. The purpose of this study is to get modelling result from three intersections condition. Method used in this study is modelling using program PTV.VISSIM 9. This study models a three condition; existing condition, Default SPUI Intersection, and Modification SPUI Intersection. Result of the modelling existing condition, level of service of the intersection is LOS F with the average vehicle delay is 104,79 second. On Default SPUI Intersection, level of service of the intersection is LOS D with the average vehicle delay is 32,54 second. On Modification SPUI Intersection, level of service of the intersection is LOS D with the average vehicle delay is 30,3 second. Result of this models are passing the calibration process from driving behavior aspect and vehicle volume validation and the best result is SPUI with size modification.

Keywords
Intersection, SPUI, Unconventional, VISSIM

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/DXc6b2g3pLFB

Corresponding Author
Yoga Pradana

Institutions
(a) Students of Civil Engineering Department, Faculty of Civil, Enviromental & Geo Engineering, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo,
Surabaya 60111, Indonesia
* dana.yogapradana[at]gmail.com
(b) Civil Engineering Department, Faculty of Civil, Enviromental & Geo Engineering, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo,
Surabaya 60111, Indonesia

Abstract
This study aims to determine factors influencing performance assessment of road infrastructure and design proposals for non-toll road performance assessment models. As of now, there has been a performance assessment of road infrastructure, but not yet implemented consistently. It also still needs some improvement by using variables and other variable indicators that have not been used, especially for roads that have been built, operated and maintained. The design of the road infrastructure performance assessment model is done by selecting variable indicators based on literature reviews and expert interviews. Then filtering out variables using relative important index (RII) and weighting variables using pairwise comparisons. As a model validation, the project data for several national road segments in East Java were made as case studies, thus the results were represented in the form of web spiders for an easier interpretation. The model simulation results show that roads in Indonesia are already good in technical and economical aspects, but still need improvement on social, environmental and management aspects. This model can be used as one of the basic considerations for improvements in enhancement of road performance in Indonesia.

Keywords
Road Performance Assessment; Triple Bottom Line; Sustainable Development

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/D73dAjWC2FMR

Corresponding Author
Indriati Martha Patuti

Institutions
a)Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Gorontalo, Jalan Sudirman No. 6 Kota Gorontalo-96128, Indonesia
*indri.martha.p[at]ung.ac.id
b)Department of Civil and Environmental, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta Indonesia

Abstract
The boundary equilibrium method is one of the methods used in numerical analysis in the geotechnical field. Slope stability is determined by the values of safety factors. This is obtained from various methods, discussing the usual method or Fellenius method, Bishop method, Bishop Simple method, Simple Janbu Method, Spencer Method, and General Limit Equilibrium method, GLE/Morgenstern-Price method. Pore water pressure, soil shear strength, and slope geometry are factors that can affect slope stability. The slope stability analysis was carried out on the slope by multi-level gravity walls. The research location was the natural slope in Tupa Village, Bulango Utara, Bone Bolango Regency. The natural slope had collapsed. After reinforcing the slope with a multi-level gravity walls, the slope was stable. The safety against sliding, FSs = 1.65, the safety against the overturning, FSo = 3.06, the safety against of the bearing capacity failure, FS = 6.48, and the safety factor for global slope (using GLE/Morgenstern-Price method), FS = 1.64. The results of the study show how to increase slope stability increases with increasing shear strength. However, more pore pressure can cause a significant decrease in safety factors. In addition, increasing the load on the slope can also reduce the value of the safety factor.

Keywords
Limit Equilibrium Methods; Slope Stability; Safety Factors

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/tgqWxYMRNzvF

Corresponding Author
Martyana Dwi Cahyati

Institutions
a) Civil Engineering Department, National Central University, Zhongda Road No.300, Taoyuan City 320, Taiwan
*t321655[at]ncu.edu.tw
b) Civil Engineering Department, Universitas Muhammadiyah Yogyakarta, Bantul, Daerah Istimewa Yogyakarta 55183, Yogyakarta, Indonesia

Abstract
Engineered Cementitious Composites (ECC) is the cementitious based mortar that contains the specially selected PVA fiber having high tensile strength. ECC has been known to exhibit high ductility, high tensile strength, and improved durability performance. Thus, ECC is suitable as repairing material for patching cracked beam. This study investigated about repairing cracked beam using ECC with different types of patching and the results are compared with repairs made by conventional concrete. Numerical analysis was conducted on a simply supported cracked beam with a dimension of 200x25x15 cm using Abaqus software. Behaviour of concrete and ECC in the simulation are described as concrete damage plasticity model. Linear elastic-plastic model was used to represent the behavior of rebar steel. The type of patching consisted of varying ratio of lengths and depths, including patching length to total length ratios of 0.2, 0.3, and 0.4, and patching depth to total depth ratios of 0.2, 0.3, 0.4, and 0.5. Results show that variations in the patching length and depth ratios affect the maximum flexural load, stiffness, and ductility of the repaired beam. It was also found that repairing the cracked beam using ECC provides higher flexural load of the beam than the use of conventional concrete, due to the superior tensile strength of ECC.

Keywords
Numerical Modeling, ECC, Repair, Patching, Cracked Beam

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/xr3PRbXYMUTD

Corresponding Author
Mardiyono Mardiyono

Institutions
Mahasiswa S3 Ilmu Lingkungan Pascasarjana Universitas Sebelas Maret Surakarta

Abstract
Heavy metal chromium (Cr) in the metal plating industry liquid wastes are highly toxic. Heavy metal Cr on this need to be eliminated or at least demoted so simply applied a quality raw quality. The process of reduction or disappearance of Cr from metal plating industry liquid wastes can be done with the electrocoagulation process. The purpose of this research is to lower the levels of heavy metal Cr in artificial solution containing Cr as a preliminary study for determination of NaCl are added as the electrolyte and determination of processing time the optimal electrocoagulation. Research methods using experiments in the laboratory with a continuous system of electrocoagulation process using iron electrodes, with variations in processing time and addition of NaCl. Before and after electrocoagulation done the determination of the levels of heavy metal Cr solution using artificial atomic absorption spectrophotometer (SSA). The analysis in this research uses ANAVA test two way. Test of ANAVA two way shows that the value of the significance of the variation of the concentrations of NaCl and variations in processing time electrocoagulation against concentration of heavy metal Cr on artificial solution value 0.0001 (p < 0.05). The results show that there is a difference of reduction in the concentration of heavy metal Cr significant variation in terms of processing time and electrocoagulation variation of concentration NaCl. Based on those results, the conclusion to be drawn that the process of continuous system electrocoagulation with a time of 60 minutes and the addition of NaCl 1.201% w/v gave the most optimum reduction of heavy metal Cr compared to 15 minutes processing time , 30 minutes, 45 minutes and 75 minutes and the addition of NaCl 0.402% w/v; 0803% w/v and 1.601% w/v.

Keywords
electrocoagulation, heavy metal Cr, the processing time, NaCl.

Topic
International Symposium of Civil, Environmental, and Infrastructure Engineering

Link: https://ifory.id/abstract/wPfg8djktEHG