半柔性路面灌注水泥胶浆的性能研究  

A Study on Properties of Cementitious Grouts for Semi-Flexible Pavement

作　　者：胡曙光[1] 张荣鹍 丁庆军[1] 黄绍龙[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点试验室,武汉市430070

出　　处：《公路》2009年第7期1-6,共6页Highway

基　　金：国家“863计划”项目,项目编号2006AA11Z117

摘　　要：半柔性路面是采用多孔结构的大空隙开级配沥青混凝土灌注水泥胶浆所形成的复合路面。主要研究水胶比、砂胶比、减水剂对水泥胶浆工作性能的影响,设计了14种配合比,研究在不同水胶比、砂胶比和减水剂掺量下水泥胶浆的性能。结果表明:在合理的配合比下,采用适量的聚羧酸减水剂和膨胀剂,能使水泥胶浆具有良好的工作性能、高的强度和低的干缩率。半柔性路面材料含有此种水泥胶浆,将在高温和重载交通下具有阻止路面变形的能力。Semi-flexible pavement is a composite pavement that utilizes the pore structure of open-graded asphalt mix which is subsequently filled with an appropriate cementitious mortar. The main purpose of this research is focus on the influence of W/B ratio, S/B ratio and using of superplasticizer on the wor- kability of cementitious grouts. 14 kinds of mortars are designed and studied to investigate the trends of the grouts with different W/B ratio,S/B ratio and superplasticizer dosage. On the basis of the study,cementitious grouts with the combinations of good workability, high strength and low drying shrinkage are pre- pared by using polycarboxylic acid superplasticizer and expansion agent under the proper mix proportions. The evaluation of the semi-flexible pavement material containing this kind of cementitious mortar indicate its high capacity and great potential to reduce the permanent deformation under high temperature and heavy traffic loading.

关 键 词：水泥胶浆 半柔性路面 工作性能 力学性能 体积稳定性 

分 类 号：U416.2[交通运输工程—道路与铁道工程]