Recycle System on Materials for Concrete and Structures

本研究的目的是发展混凝土结构的回收系统和混凝土工程的材料资源回收系统，从而减少对全球环境的负荷。生态混凝土被定义为由各种工业或房屋的废物或副产品组成的混凝土。并从技术、社会和政府三个方面对该系统的实现进行了探讨。(1)可利用材料资源的调查与分析。对拆除建筑混凝土块、再生骨料、粉煤灰、污泥等材料的特性进行了调查。在预拌水泥厂、污水生态水泥和生活污水生态水泥中进行了研究。研究发现，一些不符合标准和规范的材料可以满足混凝土和结构的要求。(2)根据对混凝土性能的要求，对新型codeConcrete结构的开发进行分类，并建立了性能材料评价体系。它可以导致各种材料的广泛和合适的应用，这是违反现行标准和规范的。(3)回收系统的设计。为了推进回收系统，需要建立经济、物资运输、信息交换和政府系统等各种系统。对未来推广的总体制度和政策进行了设计。

The objective of this study Is to develop not only recycle system for concrete structures but also recycle system for material resources by concrete engineering, which will lead to the reduction of load against the global environment. Ecological Concrete Is defined as a concrete consisting of materials which Is waste or by-product from various kinds of Industries or houses. And It was Investigated how to realize the system In view point of technical, social and governmantal aspects.(1) Investigation and analysis on available material resourcesThe Investigation on characteristics of such materials as concrete lump from demolished structures, recycled aggregate, coal ash, sludge In ready-mixed concrete plant, eco-cement made from sewage and household disposal was carried out. It was found that some materials which are against the standard and code can satisfy the requirements for concrete and structures.(2) development of new codeConcrete structures were classified according to the required performance of concrete and performance-based material evaluation system was developed. It can lead to the wide and suitable application of the variety of materials, which are against the present standard and code.(3) design of recycle systemIt Is needed for promoting the recycle system to establish various kinds of system such as economical, material transportation, Information exchange and governmental system. The design of total system and policy toward future promotion was carried out.