再生骨料及再生混凝土研究进展

随着我国经济的快速发展和城镇化建设进程的加快,基础建设规模越来越大,拆除旧建筑产生了大量的建筑垃圾,而每年用于浇筑混凝土的集料消耗上亿m3,带来了一系列自然资源、环境污染、能源消耗和可持续发展的问题。为了缓解这一矛盾,再生骨料及再生混凝土的开发应用研究已被广泛关注,成为目前亟待解决的关键技术之一。但由于我国对于该技术的研究起步较晚,目前尚处于室内试验研究阶段。笔者详细分析了目前国内的研究状况,针对再生骨料的生产工艺、再生骨料及再生混凝土的工作性能及改性、高强再生混凝土的研制及再生混凝土的配合比研究等关键内容进行了深入系统的分析,指出了目前研究中存在的不足和问题,进一步研究的重点内容和方法。

Overview of Recycled Aggregate and Recycled Concrete Study

With the rapid development of our economy and quickly develop of the progress with town building,the infrastructure construction scale is bigger and bigger.It brings a series problem of nature resources,pollution of the environment,energy consume and the problem of continuable development while toring down the old building produced a large scale of building garbage,but used for the concrete to build depletion hundred million m~3 natural aggregate annually.To alleviate this contradiction,the development and application study of recycled aggregate and recycled concrete received extensive concern,become one of the key techniques to be solved.But that technical research of our country is still in lab experiment research stage because it started than later.We analyzed the current research condition in detail,proceeded a thorough and system analysis of the recycled aggregate production,performance modify of recycled aggregate and recycled concrete,high strength recycled concrete research and ratio research etc,pointed out the shortage existed in the current research,point contents and method for the further study.