| Title |
Experimental Study on Recycled Aggregate Concrete Characteristics that use Clothes Processed Recycled Aggregate by Water-based Water Repellent Agent |
| Authors |
Park Shin ; Lim Nam-Gi ; Heo Jae-Won |
| Keywords |
Recycled Aggregate ; Coated Recycled Coarse Aggregate ; Water-based Water Repellent Agent ; Eco-friendly |
| Abstract |
This study compares recycled aggregate coated with water-based water repellent agent, produced in existing simple crushed dry way, with crushed gravel and existing recycled aggregate by their properties test in order to use recycled aggregate value-addedly as concrete aggregate. Concrete test is intended to present technological data on the possibility of value-added usage of water- based water repellent agent-coated recycled aggregate by comparing and analyzing its properties before and after hardening through various experiments. The conclusion is as follows. (1) Coated recycled coarse aggregate shows less slump decrease than uncoated one. (2) Coated recycled coarse aggregate reduces the amount of air compared with uncoated one. (3) In the test of compressive strength by replacement rate of coated and uncoated recycled coarse aggregate, concrete mixed with water-coated one improves more in strength than uncoated one. (4) In the test of warping strength by replacement rate of coated and uncoated recycled coarse aggregate, it does not show as distinct a difference in W/C as in compressive strength but reveals similar tendency to the relation between general concrete's warping strength and compressive strength, a fifth to a eighth. Therefore, experimental error is estimated to be small. |