聚丙烯纤维水泥稳定碎石抗弯拉弹性模量试验研究  

Experiment and Study on Flexural Elastic Modulus of Polypropylene Fiber Reinforced Cement Stabilized Macadam

作　　者：张鹏[1] 刘晨辉[1] 李清富[1] 

机构地区：[1]郑州大学水利与环境学院,郑州市450001

出　　处：《公路》2010年第8期185-188,共4页Highway

基　　金：河南省教育厅自然科学基金资助项目;项目编号2009B580004

摘　　要：根据大量试验结果,分析了试件养护龄期、聚丙烯纤维体积掺量以及水泥掺量的变化对聚丙烯纤维水泥稳定碎石抗弯拉弹性模量的影响,得出了相应的影响规律。结果表明,聚丙烯纤维的掺加可显著降低水泥稳定碎石的抗弯拉弹性模量;随着试验龄期的增长,抗弯拉弹性模量不断增长;在文中聚丙烯纤维掺量的范围内(体积掺量小于0.1%),随着纤维体积掺量的增加,水泥稳定碎石抗弯拉弹性模量有不断减小的趋势;随着水泥掺量的增加,聚丙烯纤维水泥稳定碎石抗弯拉弹性模量基本上呈线性增加。On the basis of plenty of experiment results,the effect of curing period of specimens,volume content of polypropylene fiber and cement content on flexural elastic modulus of cement stabilized macadam is analyzed,and the corresponding influencing rules are drawn.The study results indicate that the addition of polypropylene fiber can decrease the flexural elastic modulus of cement stabilized macadam evidently.The flexural elastic modulus is increasing with the increase of curing period.Within the range of the fiber content in this study（the volume content not beyond 0.1%）,there is a tendency of decrease in flexural elastic modulus with the increase of polypropylene fiber volume content.With the increase of cement content,the flexural elastic modulus of cement stabilized macadam is increasing in linearity.

关 键 词：聚丙烯纤维 水泥稳定碎石 抗弯拉弹性模量 养护龄期 水泥掺量 

分 类 号：U416.214[交通运输工程—道路与铁道工程]