摘要
Abstract
In order to study the deterioration of water stability of salt-stored asphalt mixture under freeze-thaw cycle,the effects of salt-stored material types on void ratio,void loss rate,freeze-thaw splitting strength ratio and freeze-thaw splitting strength ratio of asphalt mixture under different freeze-thaw cycles were systematically analyzed through laboratory tests.The results show that the larger the number of freeze-thaw cycles,the larger the void ratio and void loss ratio of weakly alkaline salt storage and weakly acidic salt storage asphalt mixture,and the smaller the change of void ratio and void loss ratio of strongly alkaline salt storage asphalt mixture.The freeze-thaw splitting strength of asphalt mixture mixed with weak alkaline salt storage and weak acidic salt storage is relatively small,while the freeze-thaw splitting strength of asphalt mixture mixed with strong alkaline salt storage is relatively large.Therefore,it is recommended to use strong alkaline salt storage to improve the stability of asphalt water.关键词
冻融循环/蓄盐类沥青混合料/空隙损失率/冻融劈裂强度比/冻融劈裂强度比损失率Key words
Freeze-thaw cycle/Salt storage asphalt mixture/Void loss rate/Freeze-thaw splitting strength ratio/Loss ratio of freeze-thaw splitting strength分类
交通工程
