节点文献
新型轻质桥面混凝土的研究与应用
Research on High Performance Lighweight Concrete and Its Application in Old-bridge Deck Rebuilding
【摘要】 为减轻桥梁自重,提高桥梁的承载能力,延长桥梁使用寿命,文中根据旧桥改造的需要,提出桥面混凝土材料的设计思想,利用轻集料为主要原料研制出LC30~LC50新型轻质桥面混凝土,对其容重、工作性能、力学性能、干缩性能和抗渗性能进行了研究。研究开发出的新型轻质桥面混凝土在湖北宜昌远安—当阳一级公路等重点工程得到成功应用。本项研究为我国大量的旧桥改造提供了一条新的技术途径和方法。
【Abstract】 In order to cut down the dead weight of bridge and improve the loading ability and the life span of bridge,it is important to research one kind of new lightweight bridge deck concrete.In this paper,according to the old-bridge rebuilding demand,the design rule of bridge deck concrete is given.By using the lightweight aggregate and other materials,the LC30 to LC50 high performance lightweight concrete was produced,and its density,workability,mechanic performance,shrinkage rate and resistance to permability are also researched.This kind of new bridge deck concrete has been used in Caidian Han River Bridge and highway from Yuanan to Dangyang.This research provide a new technique and method for old bridge rebuilt.
【Key words】 Lightweight aggregate; Lightweight concrete; Old bridge rebuilt; Bridge deck concrete;
- 【文献出处】 公路交通科技 ,Journal of Highway and Transportation Research and Development , 编辑部邮箱 ,2005年03期
- 【分类号】U444
- 【被引频次】13
- 【下载频次】265