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박재성,구봉근,김유식,라재웅,임찬욱,양승규 충북대학교 건설기술연구소 1998 建設技術論文集 Vol.17 No.2
The purpose of this study as to recycle the waste concrete which is generated in large quantities as crushed stone in construction works. In order to achieve these, this study deals with the comparative analysis on the workability and engineering properties of recycled aggregate classified by the factors such as aggregate composition and W/C. Also in the study, the application of recycled aggregate concrete to the concrete structure is examined. The compressive strength of 28days' curing ages of recycled aggregate concrete manufactured by this experiment manifest 356 kgf/㎠ in case of 40% water-cement ratio, 323 kgf/㎠ in case of 45% water-cement ratio, 318 kgf/㎠ in case of 50% water-cement ratio. It is difficult to use the recycled aggregate concrete in case of 50% water-cement ratio because of low compressive strength in early age. If quality control is practiced enough about the suitable mixing proportion, used of superplasticizer and proper water cement ratio, the recycled aggregate concrete is able to used sufficiently in the construction field.