纤维沥青胶浆动态剪切流变参数与温度相关性研究  

Relevance of Dynamic Shear Rheometry Parameter of Fiber Asphalt Binder and Temperature

作　　者：姚立阳[1,2] 姚丽红[3] 马勤[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050 [2]河南城建学院,河南平顶山467036 [3]河南北方红阳工业集团有限公司,河南南阳474678

出　　处：《重庆交通大学学报（自然科学版）》2012年第4期781-784,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(50778087)

摘　　要：采用动态剪切流变试验,分析了纤维沥青胶浆动态流变参数与温度的相关性,以及不同动态剪切流变参数和不同纤维胶浆的温度敏感性。结果表明:纤维沥青胶浆的动态流变参数G*,G',G″,δ和G*/sinδ等指标与温度具有很好的相关性;各指标在低温区的温度敏感性要高于在高温区的温度敏感性;纤维沥青胶浆的温度敏感性与基质沥青相比明显降低,其中聚丙烯腈纤维胶浆的热稳定性较好;添加纤维后的沥青胶浆抗车辙因子G*/sinδ明显提高,表明抗流动变形能力显著增强。Dynamic shear rheometry test was used to analyze relevance of dynamic shear rheometry parameter of fiber asphalt binder and temperature,and temperature sensitivity of different parameter and different fiber asphalt binder.The result shows that the parameters including G*,G′,G″,G*/sin δ and δ,have close connection with temperature.Temperature sensitivity of all parameters in lower temperature areas is higher than that in higher temperature areas.Temperature sensitivity of fiber asphalt binder is significantly decreased in comparison with normal asphalt;the heating stability of polyacrylonitrile fiber binder is better.Rut-resistance factor G*/sin δ of fiber asphalt binder increases greatly.This shows that anti-deforming capability of fiber asphalt binder is significantly enhanced.

关 键 词：纤维 沥青胶浆 动态剪切流变参数 温度 相关性 

分 类 号：U41[交通运输工程—道路与铁道工程]