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利用静三轴CU试验研究了水泥掺入比低于5%的低掺量水泥土的应力-应变关系及强度特性,探讨了在不同水泥掺量情况下水泥土抗剪强度指标的变化规律,分析了素土和水泥土的变形破坏模式。试验结果表明,水泥土强度随水泥掺量增加而提高,当水泥掺入比大于1.5%时,水泥土的强度和抵抗变形的能力较素土有显著的增强。研究结果对于深入认识低掺量水泥土的加固机理和现场施工合理选择水泥掺入比具有指导意义。
The static tri-axial CU test was used to study the stress-strain relationship and strength characteristics of cement with a low content of cement mixed with less than 5%. The variation of shear strength index of cement-soil under different cement contents was discussed. The deformation of soil and cement soil deformation mode. The test results show that the strength of cement-soil increases with the increase of cement content. When the cement content is greater than 1.5%, the strength and resistance to deformation of cement-soil are significantly enhanced compared with plain soil. The results of this study are of guiding significance for understanding the reinforcement mechanism of low-volume cement-soil and selecting cement incorporation rationally in site construction.