Proceedings of the Deep Mixing 2015 Conference, (DFI)
Experimental Study on the Bending Failure Properties of Cement-Treated Soil
Tsutomu Namikawa, Shibaura Institute of Technology, Japan; Takeru Fukaya, Shibaura Institute of Technology, Japan
The bending tensile stress occurs in the ground improvements when external forces are applied to the column and wall shaped ground improvements. Therefore, in the design of the column and wall shaped ground improvements, the tensile properties of the cement-treated soils become a predominant factor when the external forces induce bending moments. Then the tensile properties are required to design the ground improvements rationally. Three points bending tests are conducted to investigate the bending tensile properties of cement-treated soils in this study. Cement-treated soils mixed in a laboratory are used in the bending tests. The test specimens are prepared with the several mixing properties to study the relationship between the tensile properties and unconfined compressive strength qu. Bending tensile strength Tfb and fracture energy Gf of the cement-treated soils are evaluated from the load-deflection curves obtained from the bending tests. The experimental results indicate that Tfb and Gf are approximately proportional to qu.
|article #2090; publication #1013 (DM-2015)|