Impact Study of Stone Powder on Properties of Mine Filling Glue Powder

In this paper, by means of XRD and SEM test, and using the setting time, compressive strength and chemical combination of water and Ca (OH)₂ content of experimental parameters, we qualitatively and quantitatively study the effect of different dosage (0%, 2%, 4%, 6%, 8%) of stone powder mixing on the properties of mine filling glue powder. The results show that the mixed stone powder can reduce the setting time of glue powder, 6% of stone powder mixed with compressive strength is higher than other groups, and the most is chemically combined water amount, and hydration products is even more; SEM results can be seen that microscopic structure of 6% stone glue powder is more compact compared with other groups. XRD test results show that the amount of C₃S and C₂S reduced more by adding 6% stone powder group compared with the other groups.