• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Geoshanghai international congress >Application of Jute Geotextiles for Rural Road Pavement Construction
【24h】

Application of Jute Geotextiles for Rural Road Pavement Construction

机译：黄麻土工布在农村公路路面施工中的应用

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

摘要

A total of 5.0 km rural roads have been constructed using Jute Geotextiles (JGT) as field trials in different geophysical locations of Bangladesh. The project sites were so selected that subgrade California Bearing Ratio (CBR) values of more than 3.0% were not achievable without adopting special means. On top of subgrade, first, an Improved Subgrade (ISG) layer of 75 mm compacted sand is placed. Right above this ISG layer, the specified JGT is laid with proper overlapping and pegging. After this, another layer of ISG is placed. The rest of construction of pavement follows usual practice of placing a sub-base layer followed by a base layer and black top. A series of monitoring and performance evaluation has been undertaken at different time intervals by obtaining field CBR values along the same road sections to evaluate the efficacy of JGT. The test results reveal that the load carrying capacity of the road sections increases from 1.5 to 7.0 times due to use of JGT over a range of time interval. It is hypothesized that load carrying capacity of JGT reinforced subgrades increases through three different mechanisms: membrane action of JGT until it decomposes, absorption of moisture from subgrade by JGT resulting in an increased dry density of subgrade and consolidation of subgrade due to surcharge load of ISG, sub-base and base layer along with a percentage of traffic load. It may be noted that the economic benefit and durability enhancement of the rural roads constructed using JGT are the obvious consequences.
机译：在孟加拉国的不同地球物理位置，使用黄麻土工布（JGT）进行了总计5.0公里的乡村公路的田间试验。选择项目地点的原因是，如果不采用特殊方法，则无法实现超过3.0％的路基加利福尼亚承载比（CBR）值。首先，在路基顶部放置75 mm压实砂的改良路基（ISG）层。在此ISG层的正上方，指定的JGT进行了适当的重叠和钉住。此后，放置另一层ISG。其余的铺装施工遵循通常的做法，即先放置一个基础层，然后再放置基础层和黑色顶层。通过获取沿相同路段的现场CBR值来评估JGT的有效性，已在不同的时间间隔进行了一系列监视和性能评估。测试结果表明，由于在一定时间间隔内使用了JGT，路段的承载能力从1.5倍增加到7.0倍。假设JGT增强路基的承载能力通过三种不同的机制提高：JGT分解前的膜作用，JGT从路基吸收水分，导致路基干密度增加和ISG的超载导致路基固结，子基础层和基础层以及一定比例的流量负载。可以注意到，使用JGT建造的乡村道路的经济效益和耐久性的提高是显而易见的结果。

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