玄武岩纤维和水泥加固河床淤泥土无侧限抗压强度的试验研究  

EXPERIMENTAL RESEARTH ON THE UNCONFINED COMPRESSION STRENGTH CHARACTERISTICS OF BASALT FIBER AND CEMENT STABILIZED RIVERBED SILT

作　　者：徐丽娜[1] 牛雷 张婷[2] 王亚波[1] XU Lina;NIU Lei;ZHANG Ting;WANG Yabo(School of Civil Engineering,Jilin Jianzhu University,Changchun 130118,China;College of Construction Engineering,Jilin University,Changchun 130026,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130118 [2]吉林大学建设工程学院,长春130026

出　　处：《工业建筑》2020年第2期109-112,共4页Industrial Construction

基　　金：吉林省科技厅国际科技合作项目(20170414018GH);国家留学基金委项目(201805975010);吉林省教育厅“十三五”科学技术规划项目(JJK1H20200283KJ)。

摘　　要：通过研究玄武岩纤维长度分别为3,6,12,20,35 mm,纤维质量掺入量分别为0,0. 1%,0. 3%,0. 5%和0. 7%的条件下,养护龄期分别为7,14,28 d的纤维水泥土无侧限抗压强度,分析了纤维掺量、纤维长度及养护龄期对玄武岩纤维水泥加固河床淤泥土的力学性质的影响。试验结果表明:玄武岩纤维能有效提高水泥土抵抗变形的能力;纤维水泥土的无侧限抗压强度随着养护龄期的增加而提高;同一纤维长度条件下,随着纤维掺量的增加,纤维水泥土的无侧限抗压强度提高,但在同一纤维掺量的条件下,纤维水泥土的无侧限抗压强度随纤维长度的变化不明显。A series of unconfined compression tests were conducted on a riverbed silt improved with basalt fibers ordinary Portland cement. Basalt fibers of length 3,6,12,20 mm and 35 mm were used in the study with different fiber contents of 0%,0. 1%,0. 3%,0. 5%,and 0. 7% by weight of soil. To study the effect of curing time on strength,the specimens were cured for 7,14,and 28 days and tested. The test results showed that the basalt fiber could effectively improve the resistance to deformation of cement-stabilized soil. The unconfined compressive strength of fiber-cement soil increased with increasing curing time. For constant fiber length,the unconfined compressive strength of fiber-cement soil increases with increasing fiber content. However,for constant fiber content,the unconfined compressive strength of fiber-cement soil did not change significantly with the increase of fiber length.

关 键 词：玄武岩纤维 水泥 河床淤泥土 无侧限抗压强度 

分 类 号：TU41[建筑科学—岩土工程]