외기온 -20℃에 노출시간 변화가 콘크리트의 초기동해 피해에 미치는 영향

Outside -20℃ Exposure Time Impact on Early Frost Damage

In this study, after exposing the normal concrete outside at $-20^{\circ}C$, when the above scored $20^{\circ}C$, we analyzed the limit points of the initial early frost damage to the concrete. As a result, it was confirmed that the degree of the upper part of the concrete when it was exposed outside the freezing point for 6 hours was zero.