Abstract
This paper presents experimental results of the fresh and hardened properties of self-compacting concrete (SCC) with palm oil fuel ash (POFA). In this study, four SCC mixes with 0% (control), 10%, 20% and 30% of POFA having different water-binder ratio (w/b) ratios of 0.45, 0.50, and 0.55 were prepared. The tests performed in the study include filling ability, passing ability, segregation resistance, and compressive strength of the SCC. The fresh properties of the concrete mixes fulfilled the acceptance criteria of the SCC by EGSCC (2005). Meanwhile, the w/b ratio had significant influence on the compressive strength of SCC containing POFA. Lastly, compressive strength of SCC decreases as the replacement level of POFA increases.
Highlights
Self-compacting concrete (SCC) is concrete that does not require compaction
The present study reports the fresh state and compressive strength of SCC incorporating palm oil fuel ash (POFA) at different water-binder ratio (0.45, 0.50, and 0.55), and replacement levels of POFA (0%, 10%, 20%, and 30%)
This means that the SCC is suitable for vertical, highly congested reinforcement, and complex shape applications
Summary
Self-compacting concrete (SCC) is concrete that does not require compaction. It was developed in Japan to address the shortage of skilled labor and long construction time (Okamura and Ouchi, 2003). Many studies have been conducted on POFA to investigate its potential use in other applications including construction materials. According to Amran et al (2021), POFA fulfills the pozzolanic property criterion due to the high content of silica oxide It can potentially be used as cement replacement in concrete. One of the key differences between the SCC and other concrete is its enhanced fresh-state properties which include the flowability, passing ability (flow through congested reinforcement), and viscosity (measure of the speed of flow). The present study reports the fresh state and compressive strength of SCC incorporating POFA at different water-binder ratio (0.45, 0.50, and 0.55), and replacement levels of POFA (0%, 10%, 20%, and 30%). There are four (4) tests conducted in this study which include slump flow, J-ring, segregation resistance, and compressive strength
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