2323 Bloor St. - Stair Repair

Outdoor Concrete Stairs Repair

Severely deteriorated concrete on stairs was in a near of "beyond repair" state. A regular repair method would not be applicable as the patch thickness needed to be less than a quarter of an inch.

Patching

The delaminated concrete was removed. The Concrete surfaces were cleaned and the exposed rebar was cleaned from rust.
Polyforce Plus was mixed with Basalt to a paste like consistency. The acquired patch mass was applied to all cavities to restore the geometry of stairs.
The entire stairs surfaces were treated with a clear coat of Polyforce Plus. This application provides weather proofing and increased resistance to mechanical intrusions.

Facts

In accordance with third-party testing, the repaired surfaces are rated to the following:

Polyforce Plus

• 25 years of useful life
• 0% water permeation
• Polyforce Plus is rated to expand and contract with concrete
• The entire surface and volume of the slab is "monolithic"
• Compressive strength of 85 MPa
• Adhesive strength of 1.85 MPa (original concrete has only 1.2 MPa of a tensile strength, so the bond is stronger than the concrete itself)
• Repair is 60% cost of a traditional repair