多聚磷酸改性沥青感温性评价研究  

Temperature Sensitivity Evaluation of PPA Modified Asphalt

作　　者：蔡直言 CAI Zhiyan(Zhengzhou University, Institute of Water Conservancy and Environment, Zhengzhou, Henan 450001, China)

机构地区：[1]郑州大学水利与环境学院,河南郑州450001

出　　处：《公路工程》2017年第1期111-114,共4页Highway Engineering

基　　金：国家自然科学基金项目(51278060)

摘　　要：为了研究多聚磷酸改性沥青的温度敏感性,采用针入度黏度指数PVN法、黏温指数VTS法、复数模量指数法、及复数指数法探讨了相关指标作为PPA改性沥青感温性指标的适用性。试验结果表明,针入度黏度指数(PVN)由于采集点较少,且温差较大,因而也无法较为精确地评价沥青随着温度的变化情况,复数模量指数(GTS)也不能够有效地表现出PPA改性沥青粘弹特性随着温度而改变的情况,本文建议采用由损失模量和存储模量组成的复数指数作为多聚磷酸改性沥青的感温性评价指标。To study the temperature sensitivity of polymer modified asphalt phosphate, using pene- tration viscosity index PVN, sticky temperature index VTS, complex modulus index method and complex index method to explore the related indexes as PPA modified asphalt heat the applicability of the indica- tors. The test results show that the penetration viscosity index of the hypothalamus （PVN） with patch is less, and the temperature difference is bigger, so can more accurately evaluate the asphalt with the change of temperature, complex modulus index （GTS） will not be able to appear to be valid PPA modi- fied asphalt viscoelastic properties and subject to change with temperature, this paper recommended the loss modulus and storage modulus of the plural index as polymer modified asphalt phosphate thermal eval- uation index.

关 键 词：多聚磷酸 感温性 改性沥青 路面工程 

分 类 号：U414.1[交通运输工程—道路与铁道工程]