Compressive Strengths of High Volume Fly Ash Concrete Containing Rice Husk Ash
In order to reveal the effect of rice husk ash (RHA) on the development of properties of high volume fly ash (HVFA) concrete, the compressive strengths of HVFA concrete containing RHA at different water-binder ratio (w/b) were studied, and the corresponding morphologies were also determined by scanning electron microscopy (SEM). The results indicate that RHA decreases the compressive strengths of HVFA concrete at early ages, but increases the compressive strengths at later ages, compared to that of HVFA concrete without RHA. The compressive strengths of HVFA concrete are lower than that of the control concrete without mineral admixtures from 7 days to 90 days, but the strength gaps between HVFA concrete containing RHA and the control concrete are smaller and smaller with the increase of ages. The effect of RHA on the compressive strength of HVFA concrete is more evident at high w/b.
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Document Type: Research Article
Publication date: June 1, 2016
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- Journal of Advanced Microscopy Research (JAMR) provides a forum for rapid dissemination of important developments in high-resolution microscopy techniques to image, characterize and analyze man-made and natural samples; to study physicochemical phenomena such as abrasion, adhesion, corrosion and friction; to perform micro and nanofabrication, lithography, patterning, micro and nanomanipulation; theory and modeling, as well as their applications in all areas of science, engineering, and medicine.
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