Fundamental Study of Fresh and Hardening Property of Concrete with Non-crushed Rice Husk Ash

Abstract

This paper describes a study on the fundamental physical properties of concrete with rice husk ash, which a number of other researchers have already investigated. The study used Southeast Asian non-crushed rice husk ash (primary components: SiO₂, density: 2.41g/cm³, average size of aggregate: 80.1μm, specific surface area: 321,000 cm²/g). The purpose of this study was to examine suitable utilization forms of rice husk ash blended concrete. The test results show that rice husk ash can be blended in concrete as binder in the range of 25 to 80 kg/m³ and as mineral admixture in the range of 50 to 75 kg/m³.