Reinforced alkali-activated concrete with induced corrosion
College
Gokongwei College of Engineering
Department/Unit
Civil Engineering
Document Type
Conference Proceeding
Source Title
Sustainable Construction Materials and Technologies
Volume
2
Publication Date
1-1-2019
Abstract
Reinforced concrete comprising of deformed steel bars is the common structural material in construction. The problem of this composite material is the corrosion of deformed steel bars inside the concrete that weakens the structure over time. In this paper, investigation on the two types of reinforced concrete were used: alkali-activated concrete (AAC) and ordinary Portland cement (OPC) concrete beams. In addition, Impressed Current Technique (ICT) was made to accelerate corrosion before performing flexural bending test. The use of a non-destructive test which is the digital image correlation (DIC) technique during the flexural loading test on the two types of beam were considered to monitor the strain values against load. It was concluded that AAC mixture 1:1:2 (coal fly ash: fine aggregate: coarse aggregate) with 12M Molarity and water binder ratio of 0.52 produced the lowest corrosion rate over time for all the beams. In addition, the strain values of the AAC mixture produced ductile behavior with strain softening effect on the third point bending load test where the location of the force was applied. © 2019 International Committee of the SCMT conferences. All rights reserved.
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Recommended Citation
Ongpeng, J. C., Roxas, C. C., Rubinos, I. B., Escleto, A. T., Tan, S. M., Bolivar, E. C., Kalaw, M. L., & Promentilla, M. (2019). Reinforced alkali-activated concrete with induced corrosion. Sustainable Construction Materials and Technologies, 2 Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/1570
Disciplines
Civil Engineering
Keywords
Reinforcing bars--Testing; Steel bars--Testing; Reinforced concrete--Testing; Corrosion and anti-corrosives; Reinforced concrete—Corrosion
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