논문 상세보기
pp.624-625
Asphalt overlay on top of concrete pavement is commonly used in Korea. But water and deicing chemical can penetrate asphalt layer and stay at the boundary of asphalt and concrete layer, which cause accelerated degradation of concrete. Theoretically asphalt mixture is impermeable, but water can penetrate where improper compaction applied area or boundary area. Accordingly, optimum asphalt contents in existing mix design were modified in order to increase impermeability and test road was constructed with the modified method. The testing field site was monitored for 17 months and the performance of the test road was similar to the road used conventional mix design, although modified mix design used for the test road has 30% less air void. Thus, reduced pavement deterioration is expected on the concrete pavement rehabilitation with asphalt overlay
