泡沫沥青稳定碎石混合料疲劳特性的试验研究.pdfVIP

学兔兔 第1 3卷第 5期 建 筑 材 料 学 报 Vo1．1 3，No．5 2010年 1O月 JOURNAL OF BUILDING MATERIALS Oct．，2O1O 文章编号：1007—9629(201O)O5—0687—04 泡沫沥青稳定碎石混合料疲劳特性的试验研究 李立寒， 袁 坤， 王太鑫 (同济大学道路与交通工程教育部重点实验室，上海200092) 摘要：采用应力控制模式疲劳试验，探讨了泡沫沥青稳定碎石混合料疲劳特性及其影响因素，分析 了泡沫沥青、水泥和级配组成对该混合料疲劳特性的作用，比较了泡沫沥青稳定新集料混合料与 泡沫沥青再生混合料、热拌沥青稳定碎石混合料的疲劳特性．结果表明：泡沫沥青和水泥对泡沫沥 青稳定碎石混合料的疲劳寿命有着显著的影响；细级配组成有助于提高该类混合料的疲劳寿命； 泡沫沥青稳定新集料混合料的疲劳寿命不低于泡沫沥青再生混合料，但是略低于同级配类型热拌 沥青稳定碎石混合料的疲劳寿命． 关键词：道路工程；泡沫沥青稳定碎石混合料；疲劳特性；泡沫沥青；水泥；级配 中图分类号：U414；TU528．42 文献标志码：A doi：10．3969／j．issn．1007—9629．2010．05．025 Study on the Fatigue Characteristic of Mixtures Treated by Foamed Asphalt L Li—han， 珊 N K“， W NG Tni-xin (Key Laboratory of Road and Traffic Engineering，Tongji University，Shanghai 200092．China) Abstract：The fatigue characteristics of mixtures treated by foamed asphalt and factors influencing the fa— tigue characteristics were studied by the fatigue test of the stress—control model，and the role of foamed as— phalt，cement and gradation compoposition in the fatigue characteristics of these mixtures were investiga— ted．Then the fatigue characteristics of mixtures treated by foamed asphalt and the renewable mixture trea— ted by foamed asphalt，and mixtures treated by hot asphalt were compared．The results of the study show that the fatigue life of the mixtures treated by foamed asphalt is affected by foamed asphalt and cement sig— nificantly，it is feasible to improve the fatigue life of mixtures treated by foamed asphalt by adopting fine— gradation．The fatigue life of above trial mixture is compared with that of