论文部分内容阅读
通过试验研究了典型黄土的物理力学性质、黄土改良后的颗粒组成、液塑限变化、击实特性、改良土强度及其主要影响因素。试验结果表明:黄土改良后塑性有所降低,亲水性减弱;改良黄土选择不同的掺料,最大干密度都有所减小,石灰改良土减小更明显;无论石灰还是水泥改良土,在一定时间内其抗压强度随着龄期的增长而增加,而强度增加中粘聚力增长幅度比内摩擦角要更加显著一些;黄土改良后的物理力学性能有明显改善,同时改良土水理性能也得到改善,为类似工程路基填料的使用提供重要参。
The physical and mechanical properties of typical loess, the particle composition after modification of loess, the change of liquid-plastic limit, compaction characteristics, the strength of modified soil and its main influencing factors were studied through experiments. The results show that the plasticity of the loess is decreased and the hydrophilicity is weakened. When the different loess is selected, the maximum dry density is reduced and the lime modified soil is reduced more obviously. Whether lime or cement is modified soil, The compressive strength of the loess increases with age, while the increase of the cohesion in the strength increases more significantly than that of the internal friction angle; the physical and mechanical properties after the loess improvement are significantly improved, while the hydraulic properties of the loam Has also been improved, providing important parameters for the use of similar engineering subgrade fillings.