• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Geo-Congress >Estimation Challenges of Lateral Pressures in Retaining Structures Using Granular Recycled Tire Aggregates as Backfill
【24h】

Estimation Challenges of Lateral Pressures in Retaining Structures Using Granular Recycled Tire Aggregates as Backfill

机译：使用颗粒状再生轮胎骨料作为回填物估算保持结构中的侧向压力的挑战

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

摘要

The civil engineering community is a leader in national and international efforts towards sustainability, recycling, and reuse of materials. For example, asphalt is the most recycled material on earth, which is approximately 13 times the newsprint recycling and 27 times the glass bottles recycling (National Highway Institute Webinar, 2010). Recycled materials that have been used as borrow materials for embankment construction and retaining wall backfills include recycled asphalt, recycled concrete, tire derived aggregates (TDA), blast furnace slag, steel slag, coal bottom ash/ boiler slag, flue gas desulfurization scrubber, cullet glass, and roofing shingles (Recycled Material Resource Center, 2010). Some of these recycled materials offer potential environmental, technical, and economical benefits for retaining wall applications. For example, when compared to natural soils, many of them may offer the advantage of reduced lateral earth pressures and foundation settlement due to smaller unit weight, and potentially higher drainage capacity. However implicit in some of these options is the applicability of conventional soil mechanic principles in the design and technical assessment. In this paper we present experimental data from laboratory and model tests (centrifuge and model retaining walls) which highlight the challenges involved when trying to predict lateral pressures induced by a recycled wall backfill composed of tire derived aggregate. A key difference of this type of granular material is related to the nature of their particles which are deformable and that they can exhibit viscous behavior. The experimental results are compared with classical lateral earth theories for active, passive, and at-rest conditions. The manuscript also includes an assessment of the time dependency of the at-rest pressures induced by TDA backfill.
机译：土木工程界是国家和国际在材料的可持续性，回收和再利用方面所做的努力的领导者。例如，沥青是地球上回收率最高的材料，约为新闻纸回收率的13倍和玻璃瓶回收率的27倍（National Highway Institute Webinar，2010年）。用作路堤建设和挡土墙回填的借材的再生材料包括再生沥青，再生混凝土，轮胎骨料（TDA），高炉矿渣，钢渣，煤灰，锅炉渣，烟气脱硫洗涤塔，碎玻璃玻璃和屋顶板（再生材料资源中心，2010年）。这些再生材料中的一些为挡土墙应用提供了潜在的环境，技术和经济优势。例如，与天然土壤相比，它们中的许多由于较低的单位重量和潜在的较高的排水能力而具有减少侧向土压力和地基沉降的优点。但是，其中某些选项隐含了常规土壤力学原理在设计和技术评估中的适用性。在本文中，我们提供了来自实验室和模型测试（离心机和模型挡土墙）的实验数据，这些数据突显了在尝试预测由轮胎衍生的骨料组成的回收墙回填所引起的侧向压力时所面临的挑战。这种粒状材料的主要区别在于其可变形的颗粒的性质，并且它们可以表现出粘性。将实验结果与经典横向地球理论在主动，被动和静止条件下进行了比较。该手稿还包括对由TDA回填引起的静止压力的时间依赖性的评估。

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