chapter  20
7 Pages

CARBONIC ACID WATER ATTACK OF PORTLAND CEMENT–BASED CONCRETES

The deteriorating effect of carbonic acid water, ie. pure water with dissolved carbon dioxide (CO2), on concrete is a well known phenomenon. There is, however, limited and sometimes conflicting research data regarding the influence of various cement extenders on the resistance of conerete to carbonic acid water attack, Eglinton (1975). This project was undertaken as the initial part of a broader study into the influence of South African cement extenders on the ability of concrete to resist attack by carbonic acid water. Ground granulated blastfurnace slag (GGBS), fly ash (FA) and, to a lesser extent, condensed silica fume (CSF) were investigated in this project.