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水泥土渗透特性与强度特性研究综述 总被引:1,自引:0,他引:1
通过分析和归纳近年来水泥土研究成果,总结了水泥土的渗透和强度特性,并提出了水泥土耐久性和腐蚀性问题。水泥掺入比是影响水泥土渗透和强度的主要因素,渗透系数随掺入比或龄期的增加而减小,并趋于一定值。相同水泥掺入比条件下,龄期是影响水泥土渗透系数的主要因素;强度随掺入比或龄期的增加而增大,外掺剂是否改善水泥土强度取决于外掺剂的自身性质,强度随水灰比的增大而减小。应力应变曲线型态与围压相关,低围压下为软化型,并随围压的增大向硬化型发展; 剪切破坏面上法向应力与轴向夹角Θf随着围压增加而减小。 相似文献
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Test study of high liquid limit clay modified by quick lime used as sub-grade material 总被引:1,自引:0,他引:1
Through laboratory test, the relationships among change of compactibility, liquid/plastic limit, free swell, swell ratio without load, california bearing ratio (CBR) and soakage (after being soaked in water), and mix-ratio of quick lime and time were studied. The results show that optimum water content, plastic limit and CBR of high liquid limit clay improved by quick lime increase with the increase of mix-ratio of quick lime, while the maximum dry density, liquid limit, plasticity index, soakage (after bei... 相似文献
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