原创《污水环境对水泥土力学性能影响试验》：该文是关于土力学论文范文，为你的论文写作提供相关论文资料参考。
摘 要：由于多数地下水泥土工程直接和地下腐蚀性介质环境接触,必将导致水泥土材料的逐步劣化甚至失效破坏.以某市区工地附近明渠排放的污水作为侵蚀性介质,制作了不同水泥掺量的水泥土试件,通过对比试验,研究了污水环境和清水环境下不同水泥掺量、不同龄期的水泥土抗压强度和抗剪强度.结果表明,在污水或清水环境下,相同水泥掺量水泥土30 d龄期的抗压强度几乎相等,随着龄期的增加其抗压强度均逐步增大,但污水环境下其抗压强度增长的幅度明显小于清水环境,90 d后清水环境的水泥土抗压强度不再增长,而污水环境的抗压强度开始降低；污水环境和清水环境下的水泥土内摩擦角和黏聚力随龄期、水泥掺量的增加均逐步增大,污水环境下龄期90 d后的内摩擦角和黏聚力均开始降低.
关键词：水泥土；污水；水泥掺量；抗压强度；抗剪强度
中图分类号：TU411.3 文献标志码：A 文章编号：1674-4764（2015）04-0112-06
Abstract：The majority of underground cemented soil projects contact with underground corrosive medium environment directly, which will lead to the deterioration of cemented soil material gradually or even failure. The discharged polluted water from the open channel near construction site is used as a kind of corrosive medium to produce test pieces of cemented soil with different cement content. In both polluted water environment and clean water environment, the compressive strength and shear strength of cemented soil with different cement content and different ages are compared. The results show that when the age is 30 days, compressive strength of cemented soil with the same cement content is almost the same in polluted water environment and clean water environment. Compressive strength of cemented soil gradually increases with the increase of the age. However, the increase extent of compressive strength in polluted water environment is significantly less than that in clean water environment. After 90 days, compressive strength of cemented soil no longer increases in clean water environment, and compressive strength begins to decrease in polluted water environment. The internal friction angle and the cohesion of cemented soil gradually increase with the increase of the age and cement content in polluted water environment and clean water environment. The internal friction angle and the cohesion begin to decrease in polluted water environment after 90 days.
Key words： cemented soil； polluted water； cement content； compressive strength； shear strength
由于水泥土施工工艺简单、工期短、价格低廉、性能良好等特点,在建筑地基加固、基坑挡土墙及基坑止水帷幕等工程中得到广泛应用[1].学者们对水泥土在自然环境的力学性质研究较多,也取得了一定的研究结果[2-6].众所周知,地下结构的损坏多数和地下水的侵蚀有关,生活污水、工业污水等侵蚀性介质融入地下水中,地下水以及土质屡遭不同程度的污染,必将导致和污染环境接触的水泥土工程质量逐步劣化甚至失效破坏.比如在侵蚀性地下水地层中进行水泥土桩施工时,不仅要重视地下水对水泥土桩使用安全性的影响,而且在水泥土桩施工时地下水的侵入也要引起足够的重视.由于不同腐蚀介质的地下水对建筑材料有不同程度的影响,因此,有关这方面的课题越来越引起众多学者的关注,如刘恩军[7]介绍了侵蚀性地下水对地下结构工程的影响、评价标准及其防治措施.宁宝宽等[8-10]探讨了环境侵蚀下水泥土的力学效应、细观破裂过程以及水泥土桩承载力的影响.陈四利等[11-13]进行了化学侵蚀下水泥土的无侧限抗压强度试验、渗透时间以及冻融循环对水泥土影响的试验研究.然而,在实际工程中,地下侵蚀环境不是单一的化学成分,是多种腐蚀介质的共同作用.为此,笔者根据工程实际情况,考虑多种腐蚀性介质的影响,如污水环境下水泥土力学特性的腐蚀效应,为水泥土工程的安全性和耐久性设计和应用提供技术参数.
土力学论文参考资料：
结论：污水环境对水泥土力学性能影响试验为关于土力学方面的论文题目、论文提纲、土力学pdf论文开题报告、文献综述、参考文献的相关大学硕士和本科毕业论文。
