A Study on Actual Condition and Measures for Increase Use of Recycled Building Materials

为了保护地球环境，迫切需要回收利用建筑施工产生的废物。近年来，许多再生建筑材料被开发和生产，但这些材料的质量稳定性和对人体的安全性没有评估。本研究的目的是掌握再生建筑材料在原材料、性能和建筑构件使用中的实际情况，通过对再生建筑材料特性的问卷调查，了解到产品中废弃物含量在50%以上的产品总体上达到70%，通过对设计部门再生材料使用情况的调查，建筑师对使用再生材料持否定态度，主要原因是性能、价格、形象等方面的原因。2通过对建筑设计与施工标准规范的调查，发现规范中没有规定的排除内容，以及规范中没有明确规定的使用再生材料的注意事项。3根据调查结果，提出了建立数据库等措施，以提高再生建筑材料的利用率。

It is urgently necessary to recycle the waste producing from building construction in order to protect the global environment. Recently, a lot of recycled building materials are developed and manufactured, but the qualitative stability and the safety for human body of those materials are not assessed. The purpose of this study is to grasp the actual condition of recycled building materials, in which raw materials, performance and building element in use.From questionnarie about the characteristic of recycled building materials, it became clear that the products containing the waste more than 50% were gained 70% on the whole.From survey on using of recycled materials in the design division, architects were negative attitude of using recycled materials because of performance, prices and images.From survey on the standard specifications of design and construction, the excluding contents were not described in, and those specifications were not established in using recycled materials on mind were cleared.Based on those results, the measure for increase use of recycled building materials, for instance, creating database, were shown.