• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Concrete Convention and Exposition >Utilization of Reclaimed Asphalt Pavement Aggregates in Portland Cement Concrete for Concrete Pavement
【24h】

Utilization of Reclaimed Asphalt Pavement Aggregates in Portland Cement Concrete for Concrete Pavement

机译：硅酸盐水泥混凝土中再生沥青路面集料在混凝土路面中的利用

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Potential issues associated with depletion of good aggregate sources and management of excess RAP stockpiles increasingly motivate use of RAP in PCC as a coarse aggregate replacement. Texas has shown great interest in disposing excess RAP stockpiles and a systematic study on using RAP in PCC for Texas pavement applications was conducted by the authors recently. This paper provides a concise summary of the findings from this study. The major conclusions are (1) PCC mixture with dense aggregate gradation can be achieved by adding coarse RAP with adequate intermediate sized particles, which offers better overall performance in terms of workability and mechanical properties, (2) RAP-PCC with coarse RAP replacement up to 40% showed considerable reduction for modulus of rupture. Asphalt cohesive failure (crack passing through the asphalt layer) was found to be the main mechanism responsible for the strength reductions, (3) the addition of allowable amounts of RAP into PCC provides equivalent durability performance relative to plain PCC, and (4) constructing pavements with RAP-PCC yields economic, environmental and social benefits.
机译：与良好的骨料来源枯竭和过多的RAP储存管理相关的潜在问题越来越多地促使PCC中使用RAP作为粗骨料替代品。德克萨斯州对处置过多的RAP储量表现出极大的兴趣，作者最近对在PCC中使用RAP进行德克萨斯州路面应用进行了系统的研究。本文提供了本研究结果的简要总结。主要结论是：（1）通过添加具有适当中间尺寸颗粒的粗制RAP可以实现具有密集骨料级配的PCC混合物，这在可加工性和机械性能方面提供了更好的整体性能，（2）带有粗制RAP替代的RAP-PCC到40％表明断裂模量显着降低。沥青内聚破坏（裂缝通过沥青层）被认为是导致强度降低的主要机制，（3）在PCC中添加允许量的RAP可提供与普通PCC相当的耐久性能，以及（4）构造使用RAP-PCC的人行道可带来经济，环境和社会效益。

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