干湿循环作用下融雪剂对玻璃纤维水泥土力学性能影响的试验研究
Experimental study on influence of snow-melting agent on mechanical properties of glass fiber cemented soil under drying-wetting cycle
徐丽娜 1刘启龙 2牛雷 2孙爽1
作者信息
- 1. 吉林建筑大学交通科学与工程学院,长春 130118
- 2. 吉林建筑大学土木工程学院,长春 130118
- 折叠
摘要
为研究在干湿循环作用下不同种类融雪剂对玻璃纤维水泥土力学性能的影响,制备浓度为 0.2mol/L的醋酸钾、氯化镁和硫酸钠溶液作为融雪剂溶液,将养护后的无纤维水泥土和有纤维水泥土试块在不同种类的融雪剂溶液中浸泡3d,然后将试块取出放入烘干箱内分别进行8～10次干湿循环.进而分析融雪剂类型、干湿循环次数对试块表面破坏状态、强度和质量等的影响.试验结果表明:经过 10 次干湿循环后,醋酸钾融雪剂溶液对试块质量和强度的影响程度小于氯化镁溶液和硫酸钠溶液,说明醋酸钾融雪剂对水泥土侵蚀作用较小;试块表面裂纹随着干湿循环次数的增加逐渐增多加深,在经历相同干湿循环次数后,有纤维水泥土试块的裂纹发展程度、质量损失率和强度损失率均低于无纤维水泥土试块,说明通过添加玻璃纤维可有效提高水泥土抗干湿循环和融雪剂侵蚀的能力.
Abstract
In order to study the influence of different kinds of snow-melting agents on the mechanical properties of glass fiber cemented soil under drying-wetting cycle,potassium acetate,magnesium chloride and sodium sulfate solutions with a concentration of 0.2 mol/L were prepared as snow-melting agent solutions.The specimens of non-fiber cemented soil and fiber cemented soil were immersed in different types of snow-melting agent solutions for 3d after maintenance,and then the specimens were taken out and put into the drying oven for 8 to 10 drying-wetting cycles respectively.Then,the influence of the type of snow-melting agent and the number of drying-wetting cycles on the surface failure state,strength and quality of the test block were analyzed.The test results show that after the tenth drying-wetting cycles,the influence of potassium acetate snow-melting agent solution on the quality and strength of the test block is less than that of magnesium chloride solution and sodium sulfate solution,indicating that potassium acetate snow-melting agent has less erosion effect on cement soil;With the increase of drying-wetting cycles,the surface cracks of cemented soil gradually deepen;After the same number of drying-wetting cycles,the crack development,mass loss rate and strength loss rate of the fiber cemented soil were lower than those of the non-fiber cemented soil,indicating that the ability of the cemented soil to resist the drying-wetting cycles and the erosion of snow-melting could be effectively improved by adding glass fibers.
关键词
融雪剂/玻璃纤维/水泥土/干湿循环/无侧限抗压强度Key words
snow-melting agent/glass fiber/cemented soil/drying-wetting cycle/unconfined compressive strength引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据