纤维加筋固化土抗冻性能试验研究  

Experimental research on anti-freeze properties for the fiber reinforced solidified soil

作　　者：闫宁霞[1] 汪金龙[2] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]湖南省怀化市水利电力勘测设计研究院,湖南怀化418000

出　　处：《干旱地区农业研究》2013年第6期90-94,共5页Agricultural Research in the Arid Areas

基　　金："十二五"科技支撑计划项目(2011BAD25B04;2012BAD08B01)

摘　　要：基于固化土抗冻性能较差导致其使用寿命下降的工程特性,采用正交试验设计方法,研究了聚酯纤维和土壤固化剂对土体冻融循环后质量损失率和强度损失率的影响。研究认为:MBER土壤固化剂掺量为9%时,质量损失率在10次循环后即超过5%,当固化剂掺量为11%或更大时,质量损失率在20次循环后仍小于5%,纤维掺量对质量损失率影响较小;当固化剂掺量为13%时,纤维掺量为0.8 kg·m-3时,强度损失率也达到最小值28.51%。结果表明:固化剂掺量对质量损失率和强度损失率影响都较大,纤维掺量仅对强度损失率有一定影响。Based on the engineering properties of poor anti-freeze performance of the solidified soil and led to de-cline the engineering life,adopted the orthogonal experimental design method,has researched the quality loss rate and strength loss rate for the soil which blended polyester fiber and stabilizer after freeze-thaw cycle .The research obtained that：When the MBER soil stabilizer content was 9%,the quality loss rate after 10 cycles was more than 5%,when the stabilizer content wais 1 1%or higher,the quality loss rate after 20 cycles was less than 5%.But the fiber content had a small impact of the quality loss rate .When the stabilizer content was 13%and the fiber content was 0 .8 kg·m-3,the strength loss rate has reached 28 .5 1%which was the minimum .These results showed that：The stabilizer content had a large impact to the quality loss rate and strength loss rate,fiber content only had a certain impact to the intensity loss rate .

关 键 词：固化土 MBER土壤固化剂 聚脂纤维 质量损失率 强度损失率 

分 类 号：TV443[水利工程—水工结构工程]