摘要
对5种水泥稳定不同比例钢渣-碎石道路基层材料进行了干缩试验,试验结果及对试验结果的分析显示:钢渣-碎石材料的失水率与干缩应变随时间的增加而逐渐增加,但时间越长增加得越缓慢。干缩应变随失水率的增加而增加,不同比例钢渣-碎石的干缩应变与失水率的关系趋势大体一致。干缩系数随时间的增加而增加,前7天的增加迅速,而后逐渐变缓;钢渣比例越大,干缩系数越小。合理利用钢渣作为道路基层材料,不但可以实现环保和经济的双重效益,还可以有效减缓沥青路面反射裂缝的形成。
Dehydration contraction tests were carried out on five cement stabilized steel slag- crushed stone road base materials with various contents of proportions. Test results and result analyses in- dicate that the dehydration contraction strain increases with elapsing time at decreasing rates. The dehy- dration contraction strain increases with increasing dehydration rate, which varies little with differences materials. The coefficient of dehydration contraction increases with elapsing time rapidly for the initial seven days and slower thereafter. Reasonable utilization of steel slag in road base materials can not only achieve environmental and economic interests, but also effectively delay the formation of reflection cracking in asphalt pavements.
出处
《公路工程》
北大核心
2012年第5期202-205,共4页
Highway Engineering
基金
湖南省交通厅2009年度科技进步与创新项目(200914)
湖南省长湘高速科技示范工程项目
关键词
道路基层
水泥稳定
钢渣
碎石
干缩
road base
cement stabilization
steel slag
crushed stone, dehydration contraction
