Hydro-Demolition

The Problem

High chloride contents at the level of the reinforcing steel was causing corrosion. The conventional reinforcing had approximately 1 1/2" of cover. The slab was constructed as an 8-inch thick plate with beam and column supports. The area of the slab was 11,000 square feet and is used as a loading dock to supply a high rise office tower.

The Solution

Concrete removal of 3 1/2-inches using hydro-demolition was employed. Hydro-demolition removal was completed over a single weekend using 24-hour shifts. (Removal rate approximately 60ft2/hour). Hydro-demolition was chosen as the main surface preparation method due to production speed and the improved bonding characteristics it can provide.

Project Images