Effect of Different Aluminum-Containing Materials on the Ability of Cement Stone to Cure Chloride Ions
In this paper,chemical analysis,XRD and SEM were used to study the ability of cement stones mixed with different aluminum-containing materials(slag,metakaolin and high alumina cement)to cure chloride ions,while their strength was also measured.The results showed that:the content of Friedel's salt in cement stone increased significantly with the increase of aluminum-containing materials,and the curing rate reached the maximum at 50%,25%and 20%of slag,metakaolin and high alumina cement,respectively;SO42-significantly reduced the curing rate of cement stone against chloride ions;the aluminum-containing materials were mixed in to promote the strength.The optimum admixture of kaolinite and high alumina cement were determined to be 20%and 10%,respectively.