应用PQI评价沥青路面离析的研究.PDFVIP

第 23 卷 　第 5 期 公 　路 　交 　通 　科 　技 Vol23 　No 5 2006 年 5 月 　　 Journal of Highway and Transportation Research and Development 　　May2006 文章编号 : (2006) 应用 PQI 评价沥青路面离析的研究 陈少幸 , 张肖宁 (华南理工大学 　道路工程研究所 , 广东 　广州 　510641) 摘要 : 沥青路面施工过程中会出现不同程度的离析 , 以往判断施工离析的方法主要凭借肉眼观察和钻芯取样, 缺乏科 学性和可信性。由于没有合适的测量手段和评价方法 , 导致对于离析的判断处于破损性检测和定性评价的阶段。文章 介绍在某高速公路沥青下面层施工过程质量检测中 , 采用 PQI (Pavement Quality Indicator) 快速、无破损检测路面的空 隙率 , 直观定性分析路面离析的情况和找到离析的原因 , 然后利用统计分析的方法可以定量评价路面离析程度及范 围。 关键词 : PQI; 沥青路面 ; 空隙率 ; 离析 ; 统计分析 中图分类号: U416217 　　　　　　文献标识码 : A Re search on the Use of PQI in Evaluation of Segregation of Hotmix Asphalt Pavement CHEN Shaoxing , ZHANG Xiaoning (Road Engineering Institute , South China University of Technology , Guangdong　Guangzhou 　510641 , China) Abstract : Segregations in different extent usually occur during asphalt pavement construction In the past , the main method to judge segregation is by means of eyeobserving and core sampling , lack of scientific basis and creditabilityBecause of the absence of appropri ate measuring means and evaluation methods , the judgment of segregation would have to be made by destructive test and qualitative eval uationThe use of PQI (Pavement Quality Indicator) is introduced which can fast and nondestructively find out the air voids of asphalt pavement , to straightly and qualitatively analyze the cause of segregation , and to quantitatively evaluate the degree of segregation by statistic analysis during the quality inspection of highway pav