[CS8-22] Durability of repair material in cross-section repair method of floor top surface constructed on actual bridge
Keywords:RC Slab, Partial repair, repair material, Physical property investigation, Adhesion strength
Concrete floor slabs in road bridges are often damaged among components, and in particular, top floor concrete is exposed to traffic load and is in a severe environment such as rainwater and salt entering from above the bridge . Generally, in the case where deterioration damage occurs on the upper surface of RC floor slabs, partial repair is performed using a cross-section repair material. With regard to the cross-section repair material used for partial repair, in order to ensure the durability of the concrete floor slab, integrity with the floor slab is considered to be important, and a standard is established in the NEXCO Construction Management Guidelines 1).
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