High early strength property and its mechanism of large charge slag unclassified tailings solidification agent

This paper presents a study on the high early strength property and its mechanism of large charge slag unclassified tailings solidification agent. UCS test,XRD tests and SEM analysis were performed on cemented tailing samples. It was observed that the sample made by unclassified tailings solidification agent shows higher UCS value than that made by slag cement and there is more ettringite,C-S-H gel and C-A-S-H mineral in it. It was demonstrated that the high early strength property of unclassified tailings solidification agent is mainly caused by the activation of high alkali surroundings,sulphate anions.