土質安定処理(1)

[III-319] SHEAR STRENGTH EVALUATION FOR CEMENT-MIXED SOIL CONSIDERING THE MIXING QUALITY

〇Tao ZHANG¹, Kiyonobu KASAMA¹ (1.Tokyo Institute of Technology)

Keywords:Cement-mixed, Mixing quality, Mixing time, Unconfined compressive strength

Cement-mixing technique in ground improvement has been widely used for stabilizing soft soils in applications ranging from the strengthening of weak soils foundation to the mitigation of liquefaction. But there remains a high degree of spatial variability in the physical and mechanical properties of the treated ground (i.e., soil unit weight, shear strength, etc.). This spatial variability introduces uncertainties in the design of foundations on cement-mixed ground.The purpose of this study is to make cement-mixed soil specimen with different mixing quality and to evaluate a strength variation in terms of mixing quality such as water cement ratio.