Study on the Grouting Properties of Multi-Mineral Cement Paste

In this study, the effect of zeolite powder (ZP) and basalt powder (BP) on the grout properties of cement slurry was explored. The grout properties include fluidity, rheology, cohesiveness, segregation resistance and mechanical properties. In addition, the three-parameters mathematical models were established to better understanding the relationship above properties. The experimental results show that the incorporation of ZP or BP can effectively reduce the bleeding rate and improve the cohesiveness of cement paste, and this improvement become more significant with the increase of the ZP, BP content and the w/c ratio. Under the appropriate dosage, the cement paste can also have good compressive strength and rheological properties. The results of the three-parameter model indicated that rheological parameters, flow parameters, and cohesiveness-bleeding rate systems all can become the main factors affecting the 28day compressive strength. Flow parameters systems and rheological parameter systems were not the main factors that determine the cohesiveness of cement slurry. On the contrary, cohesiveness can significantly affect the rheological properties of cement paste.