Maintenance costs, depending on the occurrence of deterioration expressway bridges has been increasing at a very rapid rate (approximately 200% increase in the last five years). In order to reduce the damage caused by water leakage and de-icing salt damage, We proposed a design improvement of concrete slab edge.

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• 강상규(한국도로공사 도로교통연구원 책임연구원, 공학석사) | Kang Sang Gyu
• 박창호(한국도로공사 도로교통연구원 연구위원, 공학박사) | Park Chang Ho