| Title |
A Study on the Properties of mortar and recycled fine aggregate by the wet-production formula |
| Authors |
Lee. Sea-Hyun ; Shim. Jong-Woo |
| Keywords |
waste concrete ; recycled fine aggregate ; recycled aggregate mortar |
| Abstract |
This study is intended for how to utilize the recycled fine aggregate which is produced by separating and crushing waste concrete which accounts for 65% of construction wastes. It analyzes the quality of the fine aggregate which is reproduced through a wet production process, and comprehends the characteristics of mortar using the recycled fine aggregate to review whether it can be put to practical use for concrete. The conclusions of the study are as follows; The compressive strength of mortar using the wet recycled fine aggregate tends to be reduced according to the increase of the mixing rate of recycled fine aggregate at the beginning, but as time passes, it shows that the compressive strength of mortar using the recycled fine aggregate is similar to that of natural one regardless of the increase of mixing rate Based on the above results, the recycled fine aggregate through the wet production process satisfies the quality standards of the first-grade recycled fine aggregate of KS F 2573 (recycled fine aggregate for concrete) and it is concluded that the recycled fine aggregate can be used as fine aggregate because its characteristics are similar to the natural mortar. |