Assessment of the effects of rice husk ash particle size on strength, water permeability and workability of binary blended concrete

作者: Alireza Naji Givi , Suraya Abdul Rashid , Farah Nora A. Aziz , Mohamad Amran Mohd Salleh

DOI: 10.1016/J.CONBUILDMAT.2010.04.045

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摘要: Abstract This study develops the compressive strength, water permeability and workability of concrete by partial replacement cement with agro-waste rice husk ash. Two types ash average particle size 5 micron (ultra fine particles) 95 micron four different contents 5%, 10%, 15% 20% weight were used. Replacement up to maximum respectively 95 5 μm ash, produces improved strength. However, ultimate strength was gained at 10% ultra particles. Also percentage, velocity coefficient absorption significantly decreased Moreover, fresh remarkably increasing content especially in case coarser size. It is concluded that improves decreases its permeability. In addition, decreasing provides a positive effect on hardened but indicates adverse concrete.

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