An Experimental Study on Curing of Mortar Cubes by Carbon Dioxide

Abstract

Carbon dioxide (CO2) is the predominant greenhouse gas resulting from human industrial Activities. A significant fraction of CO2 discharged into the atmosphere comes from Industry point sources. Cement production alone contributes approximately 5% of global CO2 emissions. This emitted carbon dioxide, however, can be partially recycled into mortar through early age curing to form thermodynamically stable calcium carbonates. The carbonation reaction between carbon dioxide and appropriate calcium Compounds results in permanent fixation of the carbon dioxide in a thermodynamically stable calcium carbonate. Carbon dioxide and water can be found in almost every environment and thus all concretes will be subjected to carbonation. The experimental study on water cured and CO2 specimens for compression strength were carried out. The results show that mortar cubes has achieved increasing value as comparing with water curing.