摘要
选取氯化钠、氯化镁、氯化钙、CMA等融雪剂,配置20%浓度的融雪剂溶液,测试经冻融循环后对集料力学性能的影响。试验结果表明:不同类型的融雪剂对集料的压碎值影响不同,氯化钠溶液对集料压碎值的影响最大,CMA溶液对集料压碎值的影响最小,且与自来水相当;压碎后,集料的通过率变化趋势基本一致。当筛孔孔径为4.75mm时,氯化钠、氯化钙、CMA、自来水、氯化镁盐冻后集料的通过率分别为36.8%、34.9%、33.2%、32.2%、32.1%,说明CMA和氯化镁溶液对集料盐冻后力学性能的影响较小。
Through using the20%concentration of the solution of snowmelt agent,such as Sodium chloride,magnesium chloride,calcium chloride,CMA and so on,the effects of the freezing and thawing cycle on the mechanical properties of the aggregate were tested in this paper.The results showed that different types of snowmelt agents had different effects on the crushing value of aggregate.The effect of sodium chloride solution on aggregate crushing value was the largest,and the effect of CMA solution on aggregate crushing value was the slightest,which was equivalent to tap water.After crushing,the change tendency of aggregate passing ratewas basically the same.When the diameter of sieve pore diameter was4.75mm,the pass rate of aggregate was36.8%,34.9%,33.2%,32.2%and32.1%,which respectively was salt frozen by sodium chloride,calcium chloride,CMA,tap water and magnesium chloride.The effect of CMA and magnesium chloride solution on the mechanical properties of aggregate was small.
作者
查湘义
ZHA Xiang-yi(Liaoning Provincial College of Communications ,Shenyang 110122 ,China)
出处
《廊坊师范学院学报（自然科学版）》
2018年第1期85-88,94,共5页
Journal of Langfang Normal University(Natural Science Edition)
基金
辽宁省交通厅重点科研项目(201211)
关键词
融雪剂
集料
力学性能
压碎值
snowmelt agent
aggregate
mechanical properties
crush value
