Reinforced Concrete

Garage floor constructed as a reinforced concrete slab over an area of the basement with severe spalling and cracking. Salt from vehicles during the winter has penetrated the slab and caused corrosion of the embedded reinforcing steel.

View of the underside of the garage floor slab showing efflorescence, corroded steel, and spalling of the concrete.

View of the underside of the garage floor slab showing efflorescence and spalling of the concrete.

Concrete slab is fully shored from underneath. Heavy plywood installed against bottom of slab in areas where slab will be completely removed.

Spalled concrete removed from top of slab to expose and inspect corroded reinforcing steel. Reinforcing steel completely deteriorated.

Floor slab is temporarily shored. Spalled concrete removed from underside of slab to expose and inspect corroded reinforcing steel.

New concrete is placed.

Galvanic “pucks” are installed at perimeter and coated with mortar. Exposed reinforcing steel is coated with a corrosion inhibitor.

New reinforcing steel is placed and welded to exposed ends of existing steel.

Concrete surface is floated and finished.

New concrete is stuck off to match adjacent surfaces.