A Study on Improving Concrete Techniques to Enhance the Performance of Concrete Floor

콘크리트 바닥 마감재의 성능 향상을 위한 시공법 개선 연구

This research aimed to refine the concrete floor finishing for enhancing its performance compared to the traditional way. The new method involved the removing the deteriorated mortar layer and reinforcing the surface to augment the durability and bond strength of the floor surface. This study performed the experience to evaluate the bond strength, drop depth, rebound hammer hardness, and the surface hardness of the surface by adopting traditional and refined method. The results showed the proposed method enhanced the performance on all the metrics. Based on the experiment, the bond strength increased about 2.79 times before installing the finishing material, and the strength also improved about 1.67 times and 1.44 times at the painted finishing and non-painted finishing, respectively. In addition, the drop depth decreased about 4.42 times when adopting the proposed method, which shows the enhanced resistance to declamination compared with applying the traditional way. Lastly, the surface hardness measured by scratch thickness significantly improved about 505% in this experiment. The finding of this study indicates that the proposed method can substantially enhance in bond strendth and durability of floor finishing, reduce the defects of the concrete-based floor, and extend the life of the products.

본 연구는 콘크리트 바닥의 마감재 시공 전 사전 준비 공정에 대한 연구로 기존의 바닥 마감 시공 프로세스에서 발생하던 하자를 최소화하기 위해 진행되었으며, 모르타르층 제거와 표면 강화(밀봉) 공정을 추가하여 두 시공 방법 간 마감재의 성능평가를 실시하였다. 기존 공법 대비 마감재 시공 전 부착강도에서 약 2.79배, 도막형 마감재의 부착강도 약 1.67배, 비도막형 마감의 부착강도 1.44배, 탈락 두께 약 4.42배, 반발경도법 약 1.51배, 표면경도 약 5.05배의 차이를 보이며 성능이 향상된 것을 확인하였다.