PERFORMANCE OF ASPHALT CONCRETE WEARING COURSE ON THE EFFECT OF DURATION OF WATER IMMERSION
Galih Agung Purwono (a), Ir.Suherman Sulaiman., M.Eng., Ph.D (b) Nursyafril,S.T., Sp.1. (c)
(a) Student, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung
(b) Lecturer, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung
(c) Lecturer, Magister Terapan Rekayasa Infrastruktur, Politeknik Negeri Bandung. Jl.Gegerkalong Hilir Bandung
Abstract
Ashpalt Concrete is a layer on a pavement structure consisting of hard asphalt mixture and aggregate, mixed anda spread in hot conditions and compressed at a certain temperature. Asphalt concrete as a wear layer, known as the Asphalt Concrete-Wearing Course (AC-WC) with a minimum nominal thickness of 4.0 cm. However, the use of AC-WC layers in the pavement structure is often faced with problems of performance degradation due to the development of various types of damage during the service life one of them is a result of the effect of water. In general, water has a negative effect on road pavement construction. Standing water can be caused by high rainfall, poor drainage systems, high groundwater levels, and water runoff. The method used in this research is laboratory-scale experimental methods. Tests carried out in this research encompasses testing the characteristics of materials and testing the characteristics of three types of water. Furthermore, Marshall testing of asphalt mixture that was immersed in three types of water. The Asphalt Level of Oil used is a variation of 4%, 4.5%,5%, 5.5% ,6% ,6.5 %,7%. The OBC value is determined by using the Arrow Range method of the existing Marshall parameter, obtained by the OBC value of 6.15%. This research aims to look at the performance of the physical and mechanical properties of testing Marshall characteristics on a mixture of asphalt pen 60/70 wear layer (AC-WC) on the duration of water immersion from three different types of water. The specimen was carried out immersion testing from three types of water, namely clean water, brown flood water and black air with 30 minute immersion standards with variations of 1 day, 7 days, 14 days, 21 days and 30 days. The results of the study of the typical properties of the AC-WC layer questioned a decrease in density from the initial conditions to the 30 day of immersion. The results obtained were 0.64% for clean immersion water, 0.61% for brown flood water and 0.70% for black flood water. Whereas for VIM values on each specimen for clean air immersion is 43.24%, brown flood water is 45.04% and black water is 44.11%. From the immersion duration, the VIM value on immersion of the clean water still met the criteria, whereas for brown and black flood water at the immersion 7 days to 30 days it did not meet the required criteria. For VFB values, the duration of immersion for 1 month flooded brown water and black flood water below the value of 65%. For VMA values all of specimens and immersion duration still meet standard the value spesification 15% . For the mechanical stability properties of Marshall the AC-WC layer of all specimens still meet the criteria, but the greatest decrease in value occurs in the black flood water immersion specimens of 32.1% in the 30-day immersion from the initial conditions. For the viscous properties shown on the value of flow obtained. The value of flow on immersion 1 day to 30 days did not entered the required criteria. Whereas
Keywords: AC-WC, Immersion, Marshall, flow, Marshall Quontent, Flood Water
Topic: Civil Engineering