盐化物沥青混合料性能试验研究  

Experimental Study on the Performance of Salt Asphalt Mixture

作　　者：孙玉齐[1] SUN Yu-qi(Yangling Vocational and Technical College, Shaanxi Xi'an 712100, China)

机构地区：[1]杨凌职业技术学院

出　　处：《当代化工》2019年第8期1721-1724,共4页Contemporary Chemical Industry

基　　金：杨凌职业技术学院科学研究基金计划项目，项目号：(A2016005)

摘　　要：受环境低温和雨雪影响,沥青混合料路面容易结冰,导致路面抗滑系数大幅降低,增大了行车事故发生的概率,而加入盐化物后会提高摩擦系数.采用马歇尔击实试验确定沥青混合料配合比作为基准,调整基准配比中盐化物等体积替代矿粉掺加比例,测量不同替代比例下混合料高低温路用性能指标.分析指标变化规律,得出盐化物等体积替代矿粉后,添加在沥青混凝土中使路用性变差,但都同基准配比差异不大,且在规范要求值之上,可以满足路用性要求,但高低温性能都随掺量增加而降低,应合理确定掺量.Due to low ambient temperature and rain and snow, asphalt mixture pavement is easy to freeze, resulting in a significant decrease in pavement skid resistance coefficient, which will increase the probability of traffic accidents,while adding salt compounds can increase the friction coefficient. Marshall compaction test was used to determine the mixture ratio of asphalt mixture as a benchmark, and the proportion of salt in the benchmark mixture was adjusted to replace the proportion of mineral powder by the same volume.The pavement performance indexes of the mixture at high and low temperatures under different replacement ratios were measured. After analyzing the change rule of indexes, it was concluded that after salt is added to asphalt concrete instead of mineral powder in equal volume, the pavement performance will be deteriorated, but the difference between them and the reference ratio is not big and above the standard requirement value, which can meet the pavement performance requirements. However, the high and low temperature performance will decrease with the increase of the dosage, so the dosage should be reasonably determined.

关 键 词：盐化物 沥青混合料 马歇尔试件 车辙试验 

分 类 号：TU528[建筑科学—建筑技术科学]