Abstract: The main role of grouting for waterproof plugging and filling reinforcement and the results are largely determined by the performance of the grouting slurry. The performance of the slurry under different watercement ratios, bentonite and admixture content were summarized by conducting comparative tests. The results indicate that the main factor affecting the performance of the slurry is watercement ratio. The bentonite reduces the fluidity of the slurry, and the strength of the stone is significantly reduced when the cement content is more than 8%. The effect of the water reducing additives on the fluidity is obvious. The increase of the water content of the slurry will lead the increase of the water content of the slurry and the decrease of the cementation rate.

Key words: Grouting Material, Slurry Performances, Cementation Rate, Strength