Study on the Manufacture and Simulated Grouting Test of Alkali-activated-carbonatite Grouting Material

Alkali-activated-carbonatite grouting material(AACGM) is a new type of inorganic grouting material.In this paper the manufacturing process of AACGM is introduced from the aspects of the modification of sodium silicate solution,grinding of carbonatite and slurry preparation.Simulated grouting tests were carried out in laboratory to investigate the grouting effect of AACGM,the factors influencing its grouting ability and appropriate technological parameters for its grouting.The results show that when AACGM is used the single-liquid grouting process can be adopted in which slurry preparation and grouting is simultaneously and continuously conducted,and the sand cylinders grouted with AACGM with carbonatite powder∶sodium silicate solution∶water ratio being 1.0∶0.6∶0.1 by mass have favorable compressive strength and impermeability.