玻璃纤维水泥土劈裂抗拉强度影响因素试验研究  

Experimental Study on the Influencing Factors of Splitting Tensile Strength of Glass Fiber Cement Soil

作　　者：苏红军 SU Hongjun(CCCC Third Highway Engineering Bureau,Beijing 100102,China)

机构地区：[1]中交第三公路工程局

出　　处：《路基工程》2020年第1期71-75,80,共6页Subgrade Engineering

摘　　要：通过开展玻璃纤维水泥土劈裂抗拉强度试验,研究分析纤维掺量、水泥掺量、土样含水率以及养护龄期等因素对其劈裂抗拉强度的影响,并基于灰色关联理论,探究各因素对玻璃纤维水泥土劈裂抗拉强度的影响程度。研究结果表明:玻璃纤维水泥土劈裂抗拉强度与纤维掺量、水泥掺量和养护龄期呈正相关,与土样含水率呈负相关;劈裂抗拉强度增长速率随纤维掺量、水泥掺量和养护龄期的增加而减小;水泥掺量、土样含水率、养护龄期是影响玻璃纤维水泥土劈裂抗拉强度增长的主要控制因素,纤维掺量对其劈裂抗拉强度的影响最小。Glass fiber can effectively improve the defects and failure forms of cement soil with low tensile and shear strength. Through the experiment of splitting tensile strength of glass fiber cement soil, the influence of fiber content, cement content, moisture content of soil sample and curing age on the splitting tensile strength is studied and analyzed. Based on the grey relation theory, the influence degree of each factor on the splitting tensile strength of glass fiber cement soil is explored. The results show that the splitting tensile strength of glass fiber cement soil is positively correlated with fiber content, cement content and curing age, and negatively correlated with soil moisture content;the growth rate of splitting tensile strength decreases with the increase of fiber content, cement content and curing age;cement content, soil moisture content and curing age are the main control factors to affect the growth of splitting tensile strength of glass fiber cement soil. The influence of fiber content on the splitting tensile strength is minimal.

关 键 词：玻璃纤维 水泥土 劈裂抗拉强度 灰色关联理论 相关性分析 

分 类 号：TU312[建筑科学—结构工程]