Utilization of Ecosand and Flyash in Aerated Concrete for a Richest Mix Design

摘要

Aerated concrete is made by introducing air or gas into slurry composed of portland cement and finely crushed siliceous filler, so that when the mix sets and hardens uniformly cellular structure is formed. Thus it is a mixture of water, cement and finely crushed sand. By using finely powdered metal aluminium powder with the slurry and made to react with the calcium hydroxide liberated during the hydration process to give out large quantity of hydrogen gas. This hydrogen gas when contained in the slurry mix gives the cellular structure. This study involves the use of fly ash eco-sand, a byproduct of cement as filler material, aluminium powder as metal powder, hydrogen peroxide as foaming agent and OPC 43 grade cement as binder. This product emphasizes its economic feasibility when compared with the commonly produced AAC.