INVESTIGATION OF FLEXURAL CAPACITY OF CORRODED BEAM REPAIRED WITH ECC
Marthinus Alexander Bastian(a*), Priyo Suprobo (a), Djoko Irawan (a), Asdam Tambusay(a), Wahyuniarsih Sutrisno(a)

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-plain/ZbCVz3QyPqJc

Web Format | Corresponding Author (Marthinus Alexander Bastian)