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Properties of freshly mixed self-consolidating concretes incorporating rice husk ash as a supplementary cementing material
Highlights ► The filling ability and passing ability of concrete increase with lower W/B ratio. ► The concrete filling ability and passing ability increase with higher RHA content. ► Visual inspection is not always suitable to identify segregation in concrete. ► Air entrainment in concrete is affected at lower W/B ratio and higher RHA content. ► The optimum RHA content to produce good self-consolidating concrete is 10–15%.
Abstract This paper presents the key properties of freshly mixed self-consolidating concrete (SCC) incorporating rice husk ash (RHA). Air-entrained SCC mixtures were produced based on the water/binder (W/B) ratios of 0.30–0.40. RHA was used substituting 0–30% of cement by weight. The fresh properties investigated were filling ability, passing ability, segregation resistance, air content, and unit weight. The effects of RHA and W/B ratio on these properties were observed. Test results revealed that the fresh properties were significantly influenced by the W/B ratio and RHA content of concrete. RHA also affected air entrainment and decreased the unit weight of concrete.
Properties of freshly mixed self-consolidating concretes incorporating rice husk ash as a supplementary cementing material
Highlights ► The filling ability and passing ability of concrete increase with lower W/B ratio. ► The concrete filling ability and passing ability increase with higher RHA content. ► Visual inspection is not always suitable to identify segregation in concrete. ► Air entrainment in concrete is affected at lower W/B ratio and higher RHA content. ► The optimum RHA content to produce good self-consolidating concrete is 10–15%.
Abstract This paper presents the key properties of freshly mixed self-consolidating concrete (SCC) incorporating rice husk ash (RHA). Air-entrained SCC mixtures were produced based on the water/binder (W/B) ratios of 0.30–0.40. RHA was used substituting 0–30% of cement by weight. The fresh properties investigated were filling ability, passing ability, segregation resistance, air content, and unit weight. The effects of RHA and W/B ratio on these properties were observed. Test results revealed that the fresh properties were significantly influenced by the W/B ratio and RHA content of concrete. RHA also affected air entrainment and decreased the unit weight of concrete.
Properties of freshly mixed self-consolidating concretes incorporating rice husk ash as a supplementary cementing material
Safiuddin, Md. (author) / West, J.S. (author) / Soudki, K.A. (author)
Construction and Building Materials ; 30 ; 833-842
2011-12-23
10 pages
Article (Journal)
Electronic Resource
English
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