| Fatigue due to repeated wheel loadings of heavy vehicles is known to be a major cause of degradation for reinforced concrete (RC) deck slabs on highway bridges. It is becoming understood that in cold、 snowy regions such as Hokkaido、 another major cause of reducing the fatigue durability of the slabs is the freeze/thaw cycles of accumulated water、 which accelerates the scaling of cover concrete and the separation of aggregate from mortar. That scaling and aggregate separation reduce the effective thickness of the slab. This paper reports a study of repairing and reinforcement in cold、 snowy regions that extend the lifespan of degraded and damaged RC deck slabs. |
