【摘要】 水泥粉质黄黏土(以下简称水泥黄土)的强度随着水泥掺入比增大而增加,但在掺入比较小时,强度随掺入比增大而增加的幅度较大;在掺入比较大时,强度随掺入比增大而增加的幅度较小。当水泥掺入比较大时,水泥黄土的后期强度增长值得期待。侧压力在增大水泥黄土轴向抗压强度方面的贡献是比较小的。水泥的掺入比对水泥黄土的最优含水量及最大干密度影响不大;水泥黄土(尤其是掺入比较大)的水稳定性是比较好的。水泥黄土中生成了新的结晶物,所有影响水泥黄土中胶结物含量的因素都是影响水泥黄土强度的因素。从水泥黄土的应力应变关系看,水泥黄土存在一个临界水泥掺入比,从本次试验中看应该是12%左右;在此掺入比以上,从水泥黄土破坏应变(通常fε=1%~2%)和变形模量看,水泥黄土表现为一种脆性材料的特性。更多还原

【Abstract】 As cement contents increase,the stronger the strength of cement-loess becomes. Wherever,incremental extent of strength of cement-loess with cement contents increment becomes bigger when cement contents are little and vice versa.Latter-day strength of cement-loess is worthy of being expected when cement contents are big or dropping energy is big.The effect of side-stress to improve cement-loess axial compressive strength is little.The effect of cement content to the optimization water-ratio and the biggest dry-density of cement-loess is also little.Water-stability of cement-loess(especially cement contents are big) is good.There are many new crystal-substances which are created in the cement-loess.The factors to affect cement-loess strength include ingredients of every crystal-substance content.From the constitutive relation of cement-loess,cement-loess has a critical cement content(about 12%).When cement contents are higher than the critical cement content,cement-loess becomes a brittle material through destruction-strain and distortion-module of cement-loess.更多还原