摘要
通过使用强制通风烘箱使纤维沥青混合料试件高温热老化来模拟纤维沥青混合料在施工中受到的热老化,进一步通过间接拉伸试验、冻融循环试验和疲劳试验测试热老化后试件的间接拉伸强度、冻融间接拉伸强度比、动态劲度模量和疲劳寿命。试验结果表明:热老化后,纤维沥青混合料间接拉伸强度稍增大,水稳定性变差.动态劲度模量增大,疲劳寿命降低。
The fiber asphalt mixture specimen is forced to be thermally aged with ventilated oven in order to simulate the thermal aging of fiber asphalt mixture during construction. The indirect tensile strength, freeze-thaw indirect tensile strength ratio, dynamic stiffness modulus and fatigue life of specimen after thermal aging are tested with a set of tests. The result indicates that the indirect tensile strength slightly grows, the water stability is worse, the dynamic stiffness modulus is bigger and the fatigue life is reduced
出处
《筑路机械与施工机械化》
北大核心
2009年第3期38-41,共4页
Road Machinery & Construction Mechanization
关键词
热老化
纤维沥青混合料
水稳定性
疲劳寿命
thermal aging
fiber asphalt mixture
water stability
fatigue life
