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基于针入度与PG分级的沥青胶结料技术指标对比研究
引用本文:刘强强,张海涛. 基于针入度与PG分级的沥青胶结料技术指标对比研究[J]. 森林工程, 2012, 0(5): 72-75,91
作者姓名:刘强强  张海涛
作者单位:东北林业大学土木工程学院,哈尔滨150040
基金项目:黑龙江省交通运输厅重点项目(050-41311606)
摘    要:沥青胶结料是沥青路面的重要组成部分,评价沥青胶结料路用性能的常规方法是针入度方法,美国的战略研究计划(SHRP)开发了一个新的评价沥青胶结料性能的方法,即Superpave沥青胶结料路用性能PG方法,针入度规范的主要技术指标就是沥青的三大指标(针入度、延度、软化点),而沥青胶结PG方法主要指标是高温车辙因子、中温疲劳因子、低温蠕变劲度及最大拉应变等,基于两套规范的差别,从理论方面进行对比研究,研究主要有两个方面,一是从宏观角度对两套规范进行对比,分析其表面的异同,另一方面从每个主要指标进行着手,对比分析其理论方面的异同。

关 键 词:针入度  延度  PG等级  车辙因子  蠕变劲度

Comparative Study on the Performance of Asphalt Binder Based on the Penetration and PG
Liu Qiangqiang,Zhang Haitao. Comparative Study on the Performance of Asphalt Binder Based on the Penetration and PG[J]. Forest Engineering, 2012, 0(5): 72-75,91
Authors:Liu Qiangqiang  Zhang Haitao
Affiliation:(College of Civil Engineering,Northeast Forestry University,Harbin 150040)
Abstract:Asphalt binder is an important part of the asphalt pavement.The conventional method of evaluating asphalt binder road performance is the method of penetration.Strategic Highway Research Program(SHRP)of the United States has developed a new method of evaluating the performance of asphalt binder that is Superpave asphalt binder road performance grade(PG).The three major technical indicators of the specification of penetration is penetration,ductility,and softening point.The main indicators of the asphalt binder PG method is the high-temperature rutting factor,the mid-temperature fatigue factor,low-temperature creep stiffness,and the maximum tensile strain.Based on the difference of the two specifications,comparative study was conducted in two aspects:one is to analyze the similarities and differences from the macroscopic view,and the other one is to compare the similarities and differences in theoretical view from each of the major indicators.
Keywords:penetration  ductility  PG  rutting factor  creep stiffness
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