固化粉质土应力应变特性试验研究

对固化粉质土进行了单轴和三轴应力应变试验，分析了单轴应力-应变曲线和不固结不排水三轴应力-应变曲线的特点，初步探讨了龄期、固化剂掺量及围压对曲线形状的影响。单轴应力应变试验结果表明，固化粉质土后期的强度和变形特性变化较小，随着固化剂掺量的增加，单轴应力-应变曲线形状变化明显。三轴应力应变试验结果表明，随着固化剂掺量的增加，其破坏应变和破坏偏应力均呈现正向增长的态势，曲线在高围压下呈现弱软化型，在较低围压时呈现软化型。

Experimental study of stress-strain characteristics of stabilized silt

Uniaxial and triaxial tests are performed to study the stress-strain characteristics of the stabilized silt by stabilizing agents. The stress-strain curves of uniaxial and unconsolidated-undrained triaxial tests are analyzed; and the influence of age, mixture ratio, and confining pressures on the shape of curves are discussed. Uniaxial stress-strain test results show that the latter part strength and deformation characteristics of silt change small and with the increase of stabilizer amount, the curve of uniaxial stress-strain changes significantly. Triaxial stress-strain test results show that destruction of strain and stress damage shows a partial positive growth trend with the increase of stabilizer amount. When the curve at high confining pressure it shows weak softening type, when at low confining pressure it shows softening type.