Hanshin Expressway Large-scale Repair Project
Concrete Deck Slab:Cave-in

Cracking and Cave-in by Increasing Large Vehicle Traffic

Cracking or cave-in of the pavement occurs on concrete road surface (concrete deck slabs) in sections with a heavy traffic of large vehicles.
When repair fails to stop occurrence of such damage, it is necessary to conduct radical and large-scale repair and raise the level of soundness that satisfies the current standard.