The Study On Mechanical Properties Of The Sacked Cement-soil Interface

The sacked cemented-soil is formed by the geotechnical material bag and cemented-soil, which is a new green building material. It combines the advantages of Bags of sand (soil) and cement-soil, this kind of structure is characterized by low-cost, low pollution and easy construction, so it has a very broad application prospects in earth retaining structures and foundation treatment. Although the sacked cemented-soil has been used in some area, but the engineering properties of the material is very scarce and backward, especially for interface mechanical properties. As we all know, the interface mechanical properties determines of the stability of the whole structure. Therefore, the study is very meaningful.In this paper, two methods were used to study the mechanical properties of sacked cement-soil interface. On the one hand, based on fractal geometry theory, the ARMSS is used to estimate the interface fractal parameters (β, A, D) and JRC, and the JRC-JCS model was used to estimate the interfacial shear strength. On the other hand, ANSYS was used to study the mechanical properties of the contact interface factors. These methods of sacked cemented-soil mechanical properties of the interface have opened up a new way of thinking and ways.The results show that, Using ARMSS method we can accurately and easily calculate the interface fractal parameters, and roughness coefficient. Interfacial shear strength can be solved quickly. Numerical simulation results show that the relationship between the friction coefficient f,normal loading,horizontal load and the maximum cement bag horizontal displacement,the maximum slip,the maximum friction stress and the maximum total stress. All of the above work has played a guiding role of the actual project.