雨水对蓄盐沥青路面自融冰性能影响研究  

Effect of Rain on Self-deicing Performance of Asphalt Pavement Containing Deicing Additive

作　　者：付靖宜 彭超[1] 赵之杰[1,2] 王伟[1] 余剑英[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]交通运输部公路科学研究所,北京100088

出　　处：《武汉理工大学学报》2015年第2期50-54,62,共6页Journal of Wuhan University of Technology

基　　金：交通运输部科技项目(2013318800020);中央高校基本科研业务专项基金(145201016)

摘　　要：通过测试水浸泡前后蓄盐沥青混凝土表面结冰点、冰层粘附力以及浸泡液的电导率,研究了雨水对蓄盐沥青路面自融冰性能影响。结果表明:经水浸泡后蓄盐沥青混凝土的表面结冰点升高、与冰层之间的粘附力增大,其中内掺纯氯化钠的沥青混凝土在浸泡8h后,其表面结冰点及其与冰层粘附力已与普通沥青混凝土相近,而内掺包覆氯化钠融冰剂的沥青混凝土还具有一定的自融冰性能。浸泡液电导率测试表明,内掺6%纯氯化钠的蓄盐沥青混凝土和内掺6%包覆氯化钠融冰剂的蓄盐沥青混凝土浸泡4h后,氯化钠析出量分别为42.70g/m2和17.23g/m2。氯化钠经包覆处理后,减少了其从沥青混凝土中溶出量,但溶出的氯化钠仍对沥青混凝土和环境有一定的影响。Through the test of the freezing point and the adhesion force between ice and asphalt pavement of self-deicing asphalt mixture,and the conductivity of immersion liquid at different periods,the effect of the rain on the self-deicing performance of asphalt pavement was investigated.The experimental results showed that the freezing point and the adhesion force between ice and self-deicing asphalt pavement increased after immersion.The freezing point and the adhesion force of asphalt mixture only containing sodium chloride were similar to those of ordinary asphalt mixture after the immersion in water for 8h.The asphalt mixture containing sodium chloride deicing additive after coating treatment can still melt the ice on its surface to some extent.The conductivity results showed that the amount of releasing sodium chloride of selfdeicing asphalt mixture containing 6% pure sodium chloride and 6%the deicing additive were 42.70g/m2 and 17.23g/m2 respectively,after immersion in the water for 4h,which implied that the amount of released sodium chloride of self-deicing asphalt mixture decreased after coating treatment,but the dissolved sodium chloride still adversely affected the asphalt pavement and environment.

关 键 词：沥青路面 融冰剂 浸泡 结冰点 粘附力 电导率 

分 类 号：U419.92[交通运输工程—道路与铁道工程]