Abstract
This paper presents the properties of self-compacting concrete (SCC) incorporating residual rice husk ash (RHA) from thermal power plant. It was ground by a mechanical grinding method using ceramic ball mill until having the volume moment mean of 24.32 micrometer. The cementitious materials (Portland cement Type 1, OPC, and RHA) for all SCC mixtures content was kept constantly at 550 kg/m3. RHA was partially replaced in Portland cement (0, 10, 20 and 40%wt.) in producing SCC with the controlled water/cementitious (W/C) ratios of 0.28 and 0.33 by weight. Tests of fresh state properties were investigated including slump flow, V-funnel flowing time, unit weight. Further, compressive strength and ultrasonic pulse velocity were tested. It is concluded that an optimum RHA replacement level of 20%wt. has the best performance of the SCC with different levels of RHA.
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