| Title |
A Study on the Properties of Recycled Aggregate Concrete Using Recycled Fine Aggregate by Wet-Production |
| Authors |
Shim Jong-Woo ; Yu Myoung-Youl ; Lee Sea-Hyun |
| Keywords |
Waste Concrete ; Recycled Fine Aggregate ; Recycled Aggregate Concrete ; Wet Production ; By-product |
| 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 properties of recycled aggregates concrete using the recycled fine aggregate to review whether it can be put to practical use for concrete. In the experiment, recycled fine aggregate is substitute for natural fine aggregate the rate of 0, 25, 50, 75 and 100% each. The results of the study are as follows. 1) The air content is increased irregularly according to the substitutive ratio of recycled fine aggregate. 2) The slump and loss of slump with time since mixing are decreased irregularly according to the substitutive ratio of recycled fine aggregate. 3) The compressive strength of concrete using the wet recycled fine aggregate tends to be reduced with the increase of the mixing ratio of recycled fine aggregate, but the compressive strength of 25∼50% substitution ratio is increased. |