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The purpose of this study is intended for effective recycling of waste concrete. It analyzes the quality 0 the recycled coarse aggregate with production types. The conclusions of the study are as follows.
1. The recycled coarse aggregate which is produced through 5th Crushing Process (A-Type) shows the improvement in grading and particle shape, reduction in an absorption rate until 1.14% due to removal of attached the mortar and paste. Therefore, it satisfies the standards of KS F 2573(recycled aggregate for concrete) as the first grade.
2. The recycled coarse aggregate which is produced through 3rd Crushing Process(B-Type) is suited to the quality prOVlSlOns of the standards of KS F 2573, shows a 3.12% absorption rate that is second grade as recycled coarse aggregate.
Based on the above results, it is possible to product first and second grade recycled coarse aggregates with production types. It is concluded that recycled coarse aggregate with production types can be used as aggregate within required conditions. And more researches are also needed to make recycled coarse aggregate better to use for concrete.

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UCI(KEPA) : I410-ECN-0101-2009-540-014282684