A-Triple-M Contracting’s Polyjacking Process
A-Triple-M Contracting specializes in concrete lifting and polyjacking in Central Alberta. We work hard to ensure you get the highest-quality work that you expect from professionals.
Since 2011, we have been providing our services to residential, commercial, and industrial clients alike.
The process of concrete polyjacking is rather simple, consisting of three main steps:
Step 1
First, a pattern of holes is drilled through the sunken slab of concrete.
Step 2
A hydraulic pressure pump is used to inject polyurethane foam under the slab, raising it to the desired height. The amount of rise is carefully controlled using the A-Triple-M Contracting pumping unit.
Step 3
After the concrete has been raised to the desired level, the injection holes are patched using a fast-setting sand/cement mixture or other patching material.
Materials Used:
Levelling Foam: The levelling foam is a formulation of high-density polyurethane. This high-density, closed-cell polyurethane has the following characteristics and properties:
- Density, Lb/Cu Ft Compressive Strength
- (ASTM D1622) (ASTM D1621)
- 3.0 (48 kg/m3) 40 psi (275 kPa)
- 3.5 (56 kg/m3) 50 psi (344 kPa)
- 4.0 (64 kg/m3) 60 psi (413 kPa)
- 6.0 (96 kg/m3) 110 psi (758 kPa)
Polyurethane Foam: Polyurethane foam has a minimum compressive strength of 40 psi (275 kPa). Its formulation will reach 90% of full compressive strength within 15 minutes from injection.
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Our polyjacking process can easily repair concrete. Call today.
