Clay Cement Slurry Performance Study

Nowadays, the seepage grouting technology has been widely used in various fields of civil engineering, especially in the slope of governance, water power, dams, flood control and port terminals and other projects, which has become a very effective and indispensable engineering and management measures for prevention of natural disasters.Grouting material is the basis of grouting technology, since the twentieth century, a variety of new grouting materials has continuously appeared, so that the grouting construction methods have made significant progress. Cement slurry and the chemical type of slurry are commonly used in the water conservancy and hydropower projects, after long-term applied research, either from theory to practice, or from technology to craft, it has formed a relatively systematic understanding. The clay-cement slurry has been widely used abroad, especially in the former Soviet Union, but it was rare to see it being used in concrete engineering practice in China. For the civil engineering works in the anti-seepage, as the project itself for high grade anti-seepage, anti-stability requirements and good specificity of the application of curtain grouting materials, there are many issues need to be explored and researched.In this paper, starting from the laboratory experiment of clay-cement slurry's performance and based on the fundamental physical and chemical properties, the selection of raw clay, slurry consolidation mechanism and pulping process have been discussed. It mainly studies characteristics of the stability of the grout, stone rate, injection, rheology, permeability and compressive strength of stone body, and the reasonable proportion of the slurry was determined by orthogonal analysis method. The various factors on slurry properties was also analysised, and at last the analysis and evaluation for the thrift of economic and Security of environmental has been accomplished.Which provide a theoretical basis and technical support for the engineering application of clay-cement slurry and a useful reference and recommendations for clay-cement slurry's specification that would be composed in the futureThe research shows that the clay cement slurry grouting technology has a good adaptability to the civil engineering works in the anti-seepage curtain, and it can achieve better economic and environmental benefits. Clay-cement slurry is an ideal fracture grouting plugging material, not only can largely reduce the cost of grouting, but also it has excellent seepage and water shut-off, what's more,it has an extremely important development and application value.