再生骨料混凝土路面耐磨性的研究  

Research on Abrasion Resistance of Recycled Aggregate Concrete by Response Surface Methodology

作　　者：杨宁[1] 赵美霞[2] 

机构地区：[1]山东省土木工程防灾减灾重点实验室山东科技大学,山东青岛266510 [2]山东科技大学化学与环境工程学院,山东青岛266510

出　　处：《建筑科学》2011年第7期74-77,69,共5页Building Science

基　　金：国家科技支撑计划资助项目(2009BAJ28B02)

摘　　要：采用单因素扫描法系统考察了再生粗骨料的取代率、水胶比、砂率、胶凝材料的总用量等因素对再生混凝土耐磨性能的影响,分析了其产生的原因。在单因素试验的基础上,通过响应面法对影响再生混凝土耐磨性能的显著因素进行了更进一步的研究,并建立了相应的预测模型。结果表明:再生骨料的取代率和水胶比对再生混凝土耐磨性影响最为显著,砂率和胶凝材料的总用量对再生混凝土耐磨性有一定的影响,且再生骨料取代率为43%、水胶比为0.38、砂率为35%时再生混凝土耐磨性能最佳,研究结果为再生混凝土耐磨性的深入研究提供了一定的借鉴和参考。The single factor scanning method was used to analyze the effects of replacement ratio of recycled coarse aggregate,water-binder ratio,sand-coarse aggregate ratio,the total amount of gelled material on the wear resistance of recycled aggregate concrete,and its reasons were analyzed.On the basis of the single-factor test,the significant influence factors of the wear resistance of recycled aggregate concrete were further studied by the response surface methodology（RSM）,and a correlation model on the optimized wear resistance of recycled aggregate concrete was presented.The analysis results show that replacement ratio of recycled coarse aggregate,water-binder ratio exert tremendous influence on wear resistance of recycled aggregate concrete,sand-coarse aggregate ratio and the total amount of gelled material exert certain influence.Wear resistance of recycled aggregate concrete is best when replacement ratio of recycled coarse aggregate is 43%,water-binder ratio is 0.38,sand-coarse aggregate ratio is 0.35.The test results also can provide a reference for future further study on abrasion resistance of recycled aggregate concrete.

关 键 词：耐磨性 再生混凝土 响应面分析法 再生粗骨料 普通混凝土 

分 类 号：TU502.4[建筑科学—建筑技术科学]