摘要
通过对比分析二灰碎石和水泥稳定碎石混合料的收缩试验,对二灰碎石的防裂性能进行优化研究。结果表明:二灰碎石是适合排水性沥青路面抗裂性能较好的半刚性基层结构形式;骨架密实结构的二灰碎石温缩系数和干缩系数较小;二灰含量小于14%时,温缩系数和干缩系数增大缓慢。
The comparison of lime-fly ash macadam and cement stabilized macadam was conducted with shrinkage tests in order to study the optimization of anti-cracking performance of lime-fly ash macadam. The results show that the lime-fly ash macadam is a type of structure with proper anti-cracking performance which is suitable for porous asphalt pavement; lime-fly ash macadam with skeleton dense structure has smaller temperature shrinkage and shrinkage coefficients; when lime-fly ash accounts for less than 14%, the coefficients both increase slowly.
出处
《筑路机械与施工机械化》
2013年第9期55-57,62,共4页
Road Machinery & Construction Mechanization
关键词
排水性沥青路面
二灰碎石
防裂性能
温缩系数
porous asphalt pavement
lime-fly ash macadam
anti-cracking performance
temperature shrinkage coefficient
