不同种类纤维对水泥土力学性质影响试验研究  

Experimental Study of Effects of Different Kinds of Fibers on Mechanical Properties of Cement Soils

作　　者：姚燕[1] 贺祖浩 

机构地区：[1]河海大学土木与交通学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2016年第1期41-44,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：教育部博士点基金(20100094110002)

摘　　要：将聚乙烯醇、聚丙烯、网状聚丙烯、玻璃纤维这4种纤维掺入水泥土,分别通过无侧限抗压试验、劈裂抗拉试验、抗折试验、直剪试验研究不同性质的纤维对水泥土性质的影响.结果表明:聚乙烯醇和玻璃的纤维对水泥土强度提高较大;对水泥土延性与塑性的提高效果比较为:聚乙烯醇纤维>聚乙烯纤维>网状聚丙烯纤维>玻璃纤维;纤维的掺入能够明显提高水泥土的粘聚力,其中玻璃纤维在提高粘聚力的同时能够不降低水泥土的内摩擦角.To find effects of different kinds of fibers on cement soil properties,the paper used unconfined compression test,splitting tensile test,bending test,direct shear test respectively to detect cement soils which were mixed with four different kinds of fibers,i.e.polyvinyl alcohol,polypropylene,reticular polypropylene,glass fiber.The results show that the polyvinyl alcohol and glass fiber have much more effect on the strength of cement soil.The improving efficiencies of ductility and plasticity of cement soils show that：polyvinyl alcohol fiber〉 polyethylene fibers〉reticular polypropylene fiber〉 glass fiber.Fiber incorporation can significantly improve the cohesion of cement soil;and the glass fiber can improve the cohesive force but can not reduce the internal friction angle of cement soil at the same time.

关 键 词：纤维 水泥土 强度 粘聚力 内摩擦角 

分 类 号：TU432[建筑科学—岩土工程]