保水降温半柔性路面材料性能研究  

Research on Performance of Water-retention and Temperature-fall Semi-flexible Pavement Material

作　　者：凌天清[1] 郑晓卫[1] 凌濛 熊出华[1] 董强[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]长安大学公路学院,陕西西安710064

出　　处：《中国公路学报》2010年第2期7-11,17,共6页China Journal of Highway and Transport

基　　金：国家西部交通建设科技项目(200631881478)

摘　　要：对保水降温半柔性路面混合料SFAC-13的高温稳定性、水稳定性、低温抗裂性和抗疲劳性能等路用性能进行了室内试验研究，并与普通沥青混凝土AC-16进行了对比分析；同时对保水降温半柔性混合料SFAC-13路面的保水性能及降温性能进行了测试研究。结果表明：保水降温半柔性路面混合料SFAC-13的动稳定度比AC-16高很多，其残留稳定度和冻融劈裂强度比均比AC-16大，且其在-10℃时的低温破坏拉伸应变较大、劲度模量较小；SFAC-13的抗疲劳性能也优于普通沥青混合料AC-13；保水降温半柔性路面比普通沥青混合料AC-16路面降温8℃～10℃；推荐采用路面浸水24h的保水量和洒水8h后的路面降温参数作为保水降温半柔性路面的评价指标。High temperature properties, water stability, low temperature crack fatigue resistance of water-retention an 13 which were compared with ordinary as water-retention and temperature-fall d temperature-fall semi asphalt concrete AC-16 performance of SFAC that the dynamic stability of SFAC-13 is much higher the ratio of freezing-thawing split-strength are larger --10 ~C, damage tensile strain of SFAC-13 is greater than that of AC-16. Fatigue resistance of SFAC-13 is flexible pav were tested ement resistance, and mixture SFAC- in laboratory, as well 13 were studied. Result indicates than that of AC-16, its residue stability and than that of AC-16. When they are under , and stiffness modulus of SFAC-13 is less better than that of ordinary asphalt mixture AC-13. It indicates that the temperature of SFAC-13 pavement is 8℃ to 10℃ lower than that of AC-16 pavement, and water-retention capacity in 24 hours and the temperature-fall parameter after 8 hours sprinkling is recommended as the assessment criteria.

关 键 词：道路工程 半柔性路面 室内试验 路用性能 低碳路面 保水降温性能 

分 类 号：U416.22[交通运输工程—道路与铁道工程]