• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Design and Performance of Self-Consolidating Concrete for Connecting Precast Concrete Deck Panels and Bridge I-Girders
【24h】

Design and Performance of Self-Consolidating Concrete for Connecting Precast Concrete Deck Panels and Bridge I-Girders

机译：预制混凝土桥面板与桥梁I梁连接自固结混凝土的设计与性能

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

摘要

Existing Full-depth recast concrete deck systems use either open channels of pockets to accommodate the shear connectors of supporting girders for achieving composite systems. The use of open channels or pockets requires cast-in-place concrete/grout to fill these channels/pockets and their speed of construction, which are the expected benefits of using precast concrete deck system. Recent developments in full-depth precast concrete deck systems include using convered individual pockets at large spacing to simplify construction and eliminate the need for deck overlays to cover exposed surfaces. This requires flowable concrete/bout to completely fill deck pockets and gaps between the precast concrete deck panels and bridge girders (i.e. Haunches). The high cost of commercial grouts and their strict requirements of surfaces preparation and application procedures reduce the constructability and cost-effectiveness of precast concrete deck systems. The objective of this project is to investigate the constructability of using self-consolidating concrete (SCC) to fill the gap between precast concrete deck panels and bridge girders as well as covered deck pockets. This included developing SCC mixture(s) with specific requirement in terms of flowability, passing ability, stability, workability retention, and pumpability and evaluating the performance of these novel construction materials In small-scale and full-scale specimens. Sequence of pouring/pumping SCC as well as its quality control and quality assurance procedures are also determined. This experimental investigation is crucial for the success of the new generation of full-depth precast concrete deck systems and improving its competitiveness against cast-in-place deck systems.

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