| Title |
Compressive Strength of Concrete due to Moisture Conditions of Recycled Coarse Aggregates and Curing Conditions |
| Authors |
문경태(Moon, Kyoungtae) ; 박상렬(Park, Sangyeol) ; 김승은(Kim, Seungeun) |
| DOI |
https://doi.org/10.12652/Ksce.2019.39.4.0485 |
| Keywords |
순환골재;굵은 골재;함수상태;압축강도;양생조건;물/결합재 비 Recycled aggregate;Coarse aggregate;Moisture condition;Compressive strength;Curing condition;Water/binder ratio |
| Abstract |
In this study, the effect of moisture conditions of recycled coarse aggregates on the compressive strength of concrete was evaluated with the water/binder ratios and the curing conditions. The saturated recycled aggregates seemed to have the negative effect on the strength development of concrete. This is the because of the decrease in bond strength between aggregate and cement paste due to the increase of surface water according to the high absorption of recycled aggregates. The effect of types and moisture conditions of aggregates according to the change of water/binder ratio was similar. However, the curing conditions had a significant effect on the compressive strength of the concrete with the different types of aggregates. In the case of curing in air, the recycled aggregates with high absorption reduced the moisture required for hydration and increased the rate of vaporizing, and these result in interfering strength development. The moisture conditions of the recycled aggregates have a considerable effect on the compressive strength of the concrete, and it is necessary to control the moisture conditions of aggregates in the production of concrete with recycled coarse aggregate. And the control of the curing condition is very important for the concrete with recycled aggregate. |