【24h】

RECYCLING RECLAIMED ASPHALT PAVEMENT IN CONCRETE ROADS

机译:回收混凝土路面中的沥青路面

获取原文
获取原文并翻译 | 示例

摘要

In France, maintenance of road surface layers generates approximately two million tons of reclaimed asphalt pavement (RAP) a year of which less than 10 % is recycled into road materials. In this context, a research has been initiated three years ago at LCPC in collaboration with ATILH to develop recycling of RAP into pavement hydraulic concrete. In a first part, the paper presents the influence of the replacement rate of natural aggregates by RAP on compressive strength, tensile strength and elastic modulus of concrete. It shows that the higher the RAP content the lower the properties. The second part of the paper is dedicated to fatigue behavior of concrete including RAP. Fatigue tests realized show these concrete have a specific behavior between that of cement concrete and of asphalt concrete. A cracking bench is described in a third part. It showed that no significant difference in cracking behavior can be observed between two equivalent beams of concrete with 0 and 50 % of RAP. Based upon these data, the paper concludes on a preliminary design of typical road structures and on the potential, economical interest of RAP recycling in concrete roads.
机译:在法国,维护路面层可产生约200万吨的再生沥青路面(RAP),其中不到10%的再生沥青被用作道路材料。在这种情况下,三年前,LCPC与ATILH合作开展了一项研究,以将RAP的回收利用发展为路面水工混凝土。在第一部分中,本文介绍了RAP对天然骨料的替代率对混凝土的抗压强度,抗拉强度和弹性模量的影响。它表明,RAP含量越高,性能越低。本文的第二部分专门研究包括RAP在内的混凝土的疲劳性能。疲劳测试表明,这些混凝土在水泥混凝土和沥青混凝土之间具有特定的性能。第三部分介绍了裂化床。结果表明,当RAP为0和50%时,两根等效的混凝土梁之间的开裂行为没有显着差异。基于这些数据,本文总结了典型道路结构的初步设计以及混凝土道路RAP回收的潜在经济利益。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号