Toronto Pearson International Airport
|Areas Repaired||Concrete Patching - Pearson Airport, Air side|
|Repair Types||Concrete repair|
The repair was done with a mix of Polyforce Plus and Sand.
Following a general cleaning of the area with a metal brush drill attachment, the spalling was filled.
The repair took 30 minutes with 4.5 hours of curing time after the repair.
A unique quality of Polyforce Plus is the ability to work at less than 1 millimeter thickness at 100% output. This means that the material could be finished flush with the spalling without any demolition work to the repaired area.
The conventional repair with concrete would involve cutting at least 1 inch deep into the slab. This would be extremely expensive and would require closure of the area for an extended period of time.
According to third party testing, the repaired surfaces are rated to:
- 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
- Polyforce Plus mixed with Basalt reaches a compressive strength of 150 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