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

为了保护全球环境，迫切需要对建筑施工产生的废物进行回收利用。近年来，人们开发和生产了大量的再生建材，但对这些材料的质量稳定性和对人体的安全性还没有进行评估。本研究的目的是掌握再生建筑材料在使用中的原材料、性能和建筑构件的实际情况。通过对再生建筑材料特性的问卷调查，发现垃圾含量超过50%的产品总体上获得了70%的收益。通过对设计部门使用再生材料的调查，建筑师从性能、价格和形象等方面对使用再生材料持负面态度。通过对设计和施工标准规范的调查，发现在设计和施工标准规范中没有说明排除的内容，也没有明确使用再生材料的规范。基于这些结果，展示了增加使用回收建筑材料的措施，例如建立数据库。

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.