Review on Application of Rice Husk Ash Based Concrete Composite and Preparation Conditions of Rice Husk Ash

Abstract

Within the past few decades, fabricating 1 ton of standard cement (OPC) will transmit about 1 ton of carbon dioxide. With the increase of demand for cement production, the global carbon dioxide emission has increased by 8%, resulting in huge ecological problems. The continuous development of construction and cement industry has aggravated air pollution and human health damage. Therefore, environmentalists and governments at home and abroad call for the use of other environmentally friendly Supplementary Cementitious Materials to strictly control the carbon dioxide emission rate. Rice husk, as the biggest by-product in rice generation, has been ignored for a long time, and the way of successful utilization of rice husk has not been found. Subsequently, renewable cement based on rice husk cinder (RHA) can be made. This paper analyzes the application prospect of RHA in ordinary silicate concrete and the influence of RHA preparation conditions on RHA, hoping to provide reference for the application of RHA in ordinary silicate concrete.

Combined Effect of Rice Husk Ash and Animal Bone Powder on Strength and Permeability of Concrete

“…Over 28 days, compressive strength peaked at 23.43 N/mm² with 5% bone ash, but dropped to 16.49 N/mm² at 20%. The findings suggest that up to 5% animal bone ash is viable for lightweight structures, as higher percentages weaken the material [20]. The study indicates that replacing cement with animal bone powder (ABP) in concrete reduces compressive, split tensile, and flexural strengths as ABP content increases.…”