Laboratory evaluation of the effect of rice husk ash and cane pulp(Bagasse) on mechanical properties of self-compacting concrete

Self-compacting concrete (SCC) is an innovative concrete that has been able to improvethe problems caused by shaking operations during compaction and concreting in reinforcedthin sections compared to conventionally placed concrete. Common pozzolanic materialsused in concrete include fly ash, iron smelting furnace slag, rice husk ash, silica fume,pumice, and volcanic tuffs. One of the synthetic pozzolanic materials used in concrete inrecent years is bagasse. Bagasse is a substance obtained after extracting the sugarcane stalkextract. Rice husk ash (RHA) produced from the controlled combustion process has a veryhigh pozzolanic property, and this phenomenon is due to the presence of a high percentageof amorphous silica inside the rice husk. This article aims to investigate the mechanicalproperties (efficiency, compressive strength, and permeability) of SCC containing differentpercentages of rice husk ash and bagasse according to the variables of concrete age. Also,L-Box, V-Funnel, and Slump tests were used to measure the filling ability, creep, andpermeability of the manufactured concretes and to confirm the self-compaction of themixing designs. Compressive strength, permeability, and specific, gravity tests were alsoperformed on the self-compacting hardened concrete of the control and modified withashes. The results indicate that the use of rice husk ash and bagasse increases thecompressive strength and specific gravity and decreases the permeability of SCC.

کلیدواژه ها:

Self-reinforced concrete (SCC) ، Rice husk ash ، Sugarcane bagasse ash ، Compressivestrength ، Permeability ، Slam.