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廢콘크리트의 再活用을 위한 骨材 界面分離에 관한 實驗的 硏究
박차원(Park Cha-Won),강병희(Kang Byeung-Hee) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.10
The purpose of this study is to provide the basic data on the optimum method for interfaclal separation for an effective recycle of concrete waste by using the thermal properties of concrete.<br/> Therefore, this study is proceeded by dividing the interface of concrete into cement paste and fine aggregates or mortar and coarse aggregate, considering the aspect of recycled cement and aggregate as the recycling use of concrete waste.<br/> As results of experiment, in case of recycle cement, the interfaciaI separation is easily appeared, yet it is shown that the mixed amount of powder included in fine aggregate greatly decreases.<br/> But, in case of recycle coarse aggregate, the effect of interfacial separation by preliminary heating is predominant. Especially, the bonding rate of mortar is the lowest during cycling heating 5 times every 120 minutes at 300℃.<br/> Hence, it is considered that it will be an excellent effect of quality control when applied to recycle coarse aggregate which is now in a phase of making practical based on the result of this research.
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