Fresh properties and flexural strength of self-compacting concrete integrating coal bottom ash

• Published in: MATEC Web of Conferences
• Main Author: Jamaluddin N.; Hamzah A.F.; Wan Ibrahim M.H.; Jaya R.P.; Arshad M.F.; Abidin N.E.Z.; Dahalan N.H.
• Format: Conference paper
• Language: English
• Published: EDP Sciences 2016
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969920208&doi=10.1051%2fmatecconf%2f20164701010&partnerID=40&md5=a664f2f14542a6c3ab73e17e901d00f1

This paper presents the effect of using coal bottom ash as a partial replacement of fine aggregates in self-compacting concrete (SCC) on its fresh properties and flexural strength. A comparison between SCC with various replacements of fine aggregates with coal bottom ash showed that SCC obtained flexural strength decrease on increase of water cement ratio from 0.35 to 0.45. The natural sand was replaced with coal bottom ash up to 30% volumetrically. The fresh properties were investigated by slump flow, T500 spread time, L-box test and sieve segregation resistance in order to evaluate its self-compatibility by compared to control samples embed with natural sand. The results revealed that the flowability and passing ability of SCC mixtures are decreased with higher content of coal bottom ash replacement. The results also showed that the flexural strength is affected by the presence of coal bottom ash in the concrete. In addition, the water cement ratios are influence significantly with higher binder content in concrete. © Owned by the authors, published by EDP Sciences, 2016.