Performance Evaluation of Water Hyacinth Fiber Reinforced Self-Compacting Concrete using varied Rice Husk Ash as Admixture

Abstract

Self-compacting concrete (SCC) was first developed in Japan in 1988. The use of this mixture in general concrete construction practice was introduced to achieve durable structures independent of the quality construction work. Since this kind of mixture uses different kind of admixtures, it is not cheap. Low-cost materials are therefore used to make this mixture economical. Water Hyacinth, a problematic plant, can be utilized and have good promises for a growing economy. Its fiber (WHF) has been used in concrete to improve the concrete‟s physical and bending load properties. Rice hull ash (RHA) has been used to replace cement in concrete mixtures. The performance of compressive and flexural strength and Durability revealed that the addition of RHA has significant influences over the concrete’s strength. The objective of this research is to evaluate the performance of SCC using varied RHA as admixture of 0.4% WHF. This paper presents a study on the performance evaluation of slump flow, passing ability, and the compressive and flexural strength and Durabity up to 56 days of SCC and standard concretes with 0.4% volume fraction WHF and RHA. Three different replacement percentages of cement with varied volume fractions were used for both SCC and normal specimen. Results were compared to standard mixtures, concluded that WHF-RHA provides positive result on the mechanical properties at 28 days. Based on the result, mixture with 0.4% WHF and 10% RHA have higher value than standard concrete in flexural test, while mixture with 0.4% WHF and 10% RHA has close range in compressive test.