摘要
通过室内外模拟试验,研究了夏季高温多雨条件下沥青路面的水稳定性,并提出了以劈裂抗拉强度指标评价夏季室外水浴高温循环变化对沥青混合料水损害影响的方法.试验结果表明:在夏季高温多雨条件下,沥青路面浸水1个月,可导致其水稳定性降低60%左右;在饱水条件下,荷载和高温的循环作用加剧了沥青混合料的水损害.
Because of high-temperature ＆ rainy weather in summer and heavy traffic volume, water damage of asphalt pavements in South China, as one of the major types of early destruction, is serious. The moisture stability of asphalt pavements was studied by simulated tests in summer with high-temperature and rainy weather in the laboratory and outdoor, anda new method of indirect split test under high temperature cycle for evaluating moisture stability of asphalt mixtures is proposed. The test results show that the moisture stability of asphalt pavement decreases by about 60%, after it has been water-saturated for one month under high-temperature and rainy weather, and load cycling and high temperature cycle greatly damage moisture stability of asphalt mixtures.
出处
《建筑材料学报》
EI
CAS
CSCD
2007年第5期548-552,共5页
Journal of Building Materials
关键词
道路工程
沥青混合料
水损害
高温多雨气候
饱水
劈裂抗拉强度
road engineering
asphalt mixture
water damage
high-temperature and rainy weather
moisture saturation
split tensile strength
