Experimental research on rice husk ash as replacement to cement in construction industry

Abstract

For the past few years, various materials were used to supplement cement as an essential component for high performance concrete mix design in the construction industry. Those materials can be natural, industrial wastes, or by- products etc. Most common substitute materials are fly ash, Silica Fume and Rice Husk Ash. The aim of the study is to find the suitability of the rice husk ash as a pozzolanic material for cement replacement in mortar and concrete and to assess the effect of Rice Husk Ash (RHA) on concrete. An attempt has been carried out to establish the strength factor of concrete using RHA as a base material to replace cement and satisfies the structural properties of concrete such as Consistency, compressive strength, flexural strength etc. The replacement levels of the cement by mass: 0, 5, 10, 15, 20 and 25% for rice husk ash were chosen for a curing periods of 3 days, 7 days, 28days and 56days.