Posts in the ‘Resources’ Category

Permeation grouting, void filling and lifting at a wastewater treatment plant

The Quakers Hill Wastewater Treatment Plant in Sydney, Australia, has a pump pit that houses several pumps that transfer water from the digesters to other tanks. The pit is sloped and has a sump pump so that rainwater doesn't collect in the pit. The other corner at the same end of the pit as the sump had settled, however, causing ...

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You CAN lift a radiant heated floor

Contrary to popular opinion, it is possible to lift an unlevel concrete floor that has an in-floor heating system using polyurethane foam injection. It does, however, require you to do your homework in advance so that you know exactly where the heating elements are located within the floor. A Prime Resins customer in Edmonton, Alberta, just completed such a job ...

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Sealing a high-rise basement with acrylate resin

Polyurethanes are popular choices for curtain grouting below-grade structures for waterproofing. They are popular because they work. In some situations, however, you want to avoid the expansive pressure of a polyurethane. For example, behind a retaining wall with a very hard substrate that won't absorb the grout or behind a structurally weakened wall. Or, behind a wall where an old ...

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How do I repair a seawall?

Your seawall or bulkhead is failing and you’ve decided to have it fixed. What approach should you take? It depends on the nature of the failure, but leaking joints, cracks and soil erosion are primary issues. You can excavate and back fill the wall, but if it's leaking, this is only a temporary fix. Injection of the soil behind the wall with ...

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Seawall repair provides valuable lessons

Seawall repair or replacement can be a hugely expensive undertaking. Sealing leaks and filling voids left by erosion can be done more economically and with far less disruption than with excavation in most cases. A Prime Resins customer specializing in seawall repair recently used chemical grouting for the first time to seal a badly compromised seawall, fill massive voids behind the ...

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Case Study: Foam lifting an industrial floor

"This method was a success and broke paradigms in Brazilian engineering," says the contractor and distributor who did the job in Brazil that lifted a sinking concrete floor — and two 3300-gallon tanks along with it. Following up on our Field Notes from this job in Porto Alegre, where Precision Lift 4.0# and Prime Flex 920 polyurethane foams were used for void ...

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Don’t forget to flush (drill holes)

By Michael Vargo, senior technical sales consultant One of the best parts of my job is going into the field to observe or advise on the use of our chemical grouts for concrete crack injection leak sealing. It’s rewarding to see our products provide solutions and I’m always learning more myself. One thing I’ve noticed with concrete injection, however, is that often ...

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Rebonding steel topping to concrete floor

A powdered steel topping is one of the hardest, and most expensive, surfaces available for industrial flooring. So what do you do when the bond fails between the topping and the concrete subsurface? After all, removing this hard surface is no easy feat. That was the task before T. Luckey Sons at an INTEK/INKOTE steel manufacturing facility. So how did ...

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Injecting life back into precast

Michael Vargo, Prime Resins Senior Technical Consultant I had the privilege of presenting a course on pressure injection of concrete to repair cracks and seal leaks at the NPCA Precast Show 2015 Orlando. I explained pressure injection and the techniques, equipment and accessories needed to perform pressure injection of epoxy and polyurethane resins. If you’d like a copy of my presentation, email ...

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Sealing massive gushing leaks

In the words of customer Owen Suchar of Martech, “Sometimes a complex problem can have a simple solution.” Owen was referring to a job done by Ken Kane and Precision Chemical Grout for a municipality in Alabama. Due to gushing leaks from faulty connections in sliplined reinforced concrete pipes, the city was dealing with infiltration to the tune of 3.5 million ...

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