Field Application of Hydro-Demolition and Dry-Mix Shotcrete for Repairing the Understructure of Bridge Deck

Field Application of Hydro-Demolition and Dry-Mix Shotcrete for Repairing the Understructure of Bridge Deck

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Since it is impossible to reconstruct the top level that has collapsed, a formwork is constructed to squeegee mortar or spray mortar, and repair kits are being used Circulation Pump in Korea to chip away the damaged concrete of the bridge deck structure.In Korea, a technique called hydro-demolition replaces water blasting and water jetting by using high-pressure water to remove not only asphalt but also old and broken concrete.Additionally, dry materials including cement, aggregate, and additives are carried via the inside of a hose to the field using compressed air, where they meet water and are ejected at a high rate of speed.This technique is known as dry mix shotcrete.Using the NAIL LACQUER 1973 devised automatic hydraulic dismantling technology and high-performance dry-mix shotcrete, field application results are discussed in this study.