环氧树脂沥青混合料粘弹行为的力学模型分析.pdfVIP

24 7 Vol124 No17 2007 7 Journal of Highway and Transportation Research and Developm ent Jul1 2007 1002O0268 ( 2007) 07O000 6O04 闵召辉, 黄 卫, 钱振东 ( , 210096) 通过弯曲蠕变试验, 分析了环氧树脂沥青混合料不同温度下的蠕变特征根据蠕变力 模型, 采用3 单元4 单元2 阶广义Kelvin 模型3 阶广义Kelvin 模型以及修正的2 阶广义Kelvin 模型分别对不同温度的蠕变行为进行了拟 合结果表明, 环氧树脂沥青混合料各温度的蠕变变形开始发展很快, 然后逐渐变慢, 最后达到了平衡采用修正的 2 阶广义Kelvin 模型可以较为精确地表述材料不同温度的蠕变行为; 通过不同温度下修正的 2 阶广义Kelvin 模型的参 数解析, 可以得到材料的弹性模型随着温度变化趋势呈S 形研究成果可以为材料热粘弹性能的进一步研究提供依 据 道路工程; 环氧树脂沥青; 蠕变试验; 粘弹; 力 模型 U416103 A Analysis on Mechanics Model of Viscoelasticity Behaviors for Epoxy Resin Asphalt Mixture MIN ZhaoOhui, HUANG Wei, QIAN ZhenOdong ( Center of Intelligent Tran sportation , Southeast University, Jiangsu Nanj ing 210096, China) Abstract Epoxy resin asphalt mixture is a kind of thermoOsetting m aterial w ith perfect p erform ance different from normal asphalt m ixture modif ied by thermoOplastic polymer1Creep characterize of epoxy resin asphalt mixture is analyzed through bend creep test ( BCT) under - 10 e , 0 e , 10 e , 20 e , 30 e , 4 0 e , 50 e and 60 e 1ThreeOelements, fourOelements, secondOorder extensive Kelvin model, threeOorder extensive Kelvin model and modif ied secondOorder extensive Kelvin model are adopted to fit creeptests data based on creep m echanics model1 Results show that creep deform ation under def erent temperatures increased rapidly in initial stage and tended to change gently1In addition, modified secondOorder extensive Kelvin model could f it creep test s data under diff erent temperatures very