文献类型：期刊文献

英文题名：Modification Effect of Nano-Clay on Mechanical Behavior of Composite Geomaterials: Cement, Nano-Silica and Coastal Soft Soil

作者：Wang, Yaying[1];Wang, Wei[1];Zhao, Yinuo[1];Li, Na[1];Luo, Jiale[1];Belete, Asefa Mulugeta[1];Ping, Jiang[1]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China

年份：2022

卷号：15

期号：24

外文期刊名：MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000904304400001)、、EI(收录号：20230113324535)、Scopus(收录号：2-s2.0-85145009254)、WOS

基金：Scientific research topic of Shaoxing University (202110349169xj, 202110349138xj), National Innovation Training Program for College Students (202210349018).

语种：英文

外文关键词：nano-material; cement soil; compressive strength; shear strength; ductility index; Duncan-Chang model

外文摘要：To study the modification effect of nano-clay and nano-SiO2 on cement-reinforced coastal soft soil, the effects of the nano-SiO2 and nano-clay on the mechanical properties of cement soil were studied through unconfined compressive and unconsolidated undrained shear tests, and the Duncan-Chang model was used to fit the test results. Results show that adding nano-clay and nano-SiO2 to cement soil improved its compressive and shear strength. The compressive strength and shear strength increased by 18-57% and 3-32%, respectively, with the increase in nano-clay content in a content range of 0-10%. Additionally, nano-clay can enhance the ductility of cement soil. Moreover, nano-clay and nano-SiO2 improve the shear strength by increasing the internal friction angle by 1 degrees-2 degrees and cohesion of 9-25%, and the cement-stabilized coastal soft soil enhanced by nano-SiO2 and nano-clay conforms to the Duncan-Chang model well.