Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)
- 2003.05a
- /
- Pages.73.2-79
- /
- 2003
The Improvement of Properties of Recycled aggregates using Concrete Waste by Pre-heating Method.
예비가열법에 의한 폐콘크리트 재생골재의 물성개선
Abstract
The purpose of this study is to provide the basic data on the optimum method for interfacial separation for an effective recycle of concrete waste by using the thermal properties of concrete. 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. As results of the experiment, in case of recycle cement, the interfacial separation is easily appeared, but it is shown that the mixed amount of powder included in fine aggregate doesn't greatly decrease. 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 when it is heated 5 times for 120 minutes at