The accurate and efficient modification of the static and dynamic properties of problematic soils is a primary concern in geotechnical engineering. Soil stiffness, which is typically represented by a small strain shear modulus, is an essential parameter for the selection of the type and amount of soil stabilizers. In this study, the small strain shear stiffness of soft clay stabilized with cement and nano-SiO₂ is systematically studied through a series of bender element tests. The shear wave velocity and small strain shear modulus of the stabilized clay are investigated over different curing periods and with different cement and nano-SiO₂ concentrations. The experimental results show that the shear stiffness of the stabilized clay strongly increases with increasing cement content, nano-SiO₂ percentage, and curing time. The findings also imply that nano-SiO₂ is a complementary pozzolan that can be used to reduce the amount of required cement content in the mixture to account for environmental considerations.

准确有效地修改有问题的土壤的静态和动态特性是岩土工程中的主要问题。土壤刚度通常由较小的应变剪切模量表示，是选择土壤稳定剂类型和数量的重要参数。在这项研究中，通过一系列弯曲元件测试，系统地研究了用水泥和纳米SiO ₂稳定的软粘土的小应变剪切刚度。研究了不同固化时间，不同水泥和纳米SiO ₂对稳定黏土的剪切波速度和小应变剪切模量的影响。浓度。实验结果表明，随着水泥含量，纳米SiO ₂百分含量和固化时间的增加，稳定粘土的剪切刚度大大增加。研究结果还暗示，纳米SiO ₂是一种互补的火山灰，可用于减少混合物中所需的水泥含量，以解决环境问题。