融雪剂配比对基质沥青混合料水稳定性能影响  

Influence of the proportion of snow melting agent on the water stability of the matrix asphalt mixture

作　　者：彭智宇 宋云连[1] 赵宁 PENG Zhiyu;SONG Yunlian;ZHAO Ning(Key Laboratory of Civil Engineering Structure and Mechanics,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学内蒙古自治区土木工程结构与力学重点实验室,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2023年第2期169-173,共5页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区高等学校科学研究项目(NJZZ20064);内蒙古自治区自然科学基金项目(2019MS05060)。

摘　　要：由于我国北方季冬区对融雪的需要,为了研究融雪剂不同成分对基质沥青混合料水稳定性能的影响,从拟定的12种融雪剂中,挑选出以融雪化冰性能最佳和造价经济的3种配比(2号、5号、8号)。试验用融雪剂溶液浸泡试件进行不同冻融循环劈裂试验,以劈裂抗拉强度和冻融腐蚀因子评价沥青混合料水稳定性的影响规律。结果表明:融雪剂中NaCl含量(8%~22%)越小,CaCl2含量(51%~65%)越大,对沥青混合料水稳定性能影响越小。在相同冻融次数下(1次、5次和10次),劈裂强度TSR和冻融腐蚀因子Kdf均表现为:2号>5号>8号;通过融雪剂溶液浸泡组与空白组试件的劈裂强度对比,发现劈裂强度降低比率与冻融次数的关系可以拟合为Y=A×XB。因此,基于融雪效果、水稳定性及经济性,推荐2号融雪剂在北方地区使用。In order to study the effect of different components of snowmelt agents on the water stability of asphalt mixture substrates,3 types of snowmelt agents with the best performance and economic cost were selected from 12 types of formulated snowmelt agents(No.2,No.5,and No.8)for the northern winter snow melting area in China.The frozen-thawed splitting test was carried out by soaking the test pieces in a snowmelt agent solution to evaluate the influence of the snowmelt agent on the water stability of the asphalt mixture substrate,based on the splitting tensile strength and freeze-thaw corrosion factor.The results showed that the smaller the NaCl content(8%~22%)and the larger the CaCl2 content(51%~65%)in the snowmelt agent,the less the influence on the water stability of the asphalt mixture substrate.Under the same freeze-thaw cycles(1,5,and 10 times),the splitting strength TSR and freeze-thaw corrosion factor Kdf were in the order of No.2>No.5>No.8.By comparing the splitting strength of the snow-melting agent solution soaking group with the blank group,it is found that the relationship between the reduction ratio of splitting strength and the number of freeze-thaw cycles can be fitted Y=A×XB as.Therefore,based on the snow melting effect,water stability,and economic factors,No.2 snowmelt agent is recommended for use in northern China.

关 键 词：道路工程 融雪剂配比 沥青混合料 冻融腐蚀因子 水稳定性 冻融劈裂试验 

分 类 号：U[交通运输工程]