Abstract
Concrete is a versatile and cost-effective building material whose properties are influenced by age, curing condition, and installation. A number of studies deduced that there should be an association of benefits encouraged the use of partial replacements of cement seems to improve strength and durability properties of concrete. This paper presents a framework for feasibility assessment and determination of optimum percentage of rice husk ash (RHA) replacement. Five mix plans with RHA replacing ratio of 0-20% and constant micro- silica value by 10% were prepared. Tests results indicated that compressive strength increased by 20% with an increase in RHA up to 15%. The similar trend was observed in mix designs made of cement replaced by RHA up to 20% in water absorption coefficient measurement. Higher chloride ion penetration was observed in mix designs containing 25% RHA compared to that of conventional concrete. Mixes developed a slightly higher impact resistance than the control mix.
Highlights
Today, construction industry encountered host of problems mostly concerned with associated environmental warnings, disposal of wastes, and depletion of natural resources
Our present area of research is to evaluate the suitability of concrete containing locally available rice husk ash (RHA) as a partial replacement of cement, by weight following some experimental backgrounds besides the perfect estimations by replacement that were made in percentages of 0-20%
Test performed in accordance with standard test methods indicated that tensile strength increased with 5% RHA due to pure tension and bending reached by 109% of those of the reference sample with a descending rate
Summary
Construction industry encountered host of problems mostly concerned with associated environmental warnings, disposal of wastes, and depletion of natural resources. Eco-friendly materials using renewable and local resources are in full development [6] These include industrial (steel slag, copper slag, waste iron, fly ash, lime stone, pond ash, etc.) and agricultural by products (hemp shives, flax, reed, expanded cork, natural wood, rice husk ash, etc.). Kartini, stated that replacing rice husk ash instead of ordinary Portland cement led improving in strength and durability of concrete [17]. Our present area of research is to evaluate the suitability of concrete containing locally available RHA as a partial replacement of cement, by weight following some experimental backgrounds besides the perfect estimations by replacement that were made in percentages of 0-20%. All of the test results were evaluated to achieve the optimum level of RHA replacement
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
