Posts in the ‘Products’ Category

Polyurethanes in hot weather

4 Tips for Injecting Polyurethane Grouts in Hot Weather We often get asked about how polyurethane resins will react in cold weather or in the presence of cold water. In that case, both typically slow reaction times. Less common are questions about chemical grouting in hot weather. There are, in fact, some things you should keep in mind when temperatures are soaring ...

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Repairing an historic landmark

The Daytona Beach Bandshell has been a destination for concertgoers for nearly 80 years and is on the U.S. Register of Historic Places. But age can take its toll, especially since the venue is constructed of coquina stone, a sedimentary rock composed of fossilized seashells and coral. The porosity of this stone was one challenge that had to be overcome when ...

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Field Notes: Lifting floors of a single-story home

Our technical services staff is back from on-site training for a customer in Nevada. The project is a ranch-style single-story home that serves as a seniors’ residence. The whole building has settled, as much as 4 inches in some places. The crew used helical piers around the foundation but needed to lift the interior floors to match. It is a big, ...

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Video: Eye level view of slab lifting

Lots of people know about mudjacking to level concrete, but doing concrete leveling with polyurethane foam is still a new concept to many. They are skeptical. They can't wrap their heads around how a polyurethane foam, stuff that looks like spray insulation, can be strong enough to support a driveway. Not only can it support a driveway, but ...

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Estimating lifting foam

How to Estimate Material for Concrete Leveling With Foam When I talk to mudjackers who want to get into foam lifting, they almost always want to know the difference in estimating how much material is needed. In fact, anyone new to slab lifting with polyurethane foam will ask how to estimate material, not just people experienced in mudjacking. If you use a ...

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Lifting foam complements piers

Using Lifting Foam With Piers Polyurethane structural lifting foams can be the perfect complement to helical or push piers for foundation or structural raising and stabilization. The foams can be strong enough to do the lifting themselves in many cases, but if piers are required for structural reinforcement, polyurethane foam is the perfect choice to fill the voids created by lifting ...

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Stopping a persistent leak at last

The Niagara Parks Commission has spent a lot of money over many years attempting to seal persistent leaks in a pedestrian tunnel to the Niagara Falls Voyage to the Falls boat dock. Cracks were injected and repainted just about annually for years, but still the leaks persisted. It appears that a combination of wrong material and improper installation doomed past ...

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Undersealing an LNG pit in Texas…at 124 degrees

When the Sabine Pass (Texas) liquid natural gas facility was built, the concrete contractor needed to stop leaks in an emergency maintenance pit so a special overlay material could be installed on the floor. The concrete floor is 4 feet thick and sits on top of a 6-foot mud mat. The facility sits adjacent to a shipping channel, so the groundwater ...

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Hydrophilic vs Hydrophobic

Hydrophilic vs Hydrophobic: Which to Use and Why Chemical grouts are a cost-effective solution for many leak sealing, void filling and soil stabilization projects. Choosing the right material and installing it correctly are critical to the long-term success. Chemical grouts fall into two classes: hydrophilic grouts that have an affinity for water and seek it out and hydrophobic grouts that repel water and ...

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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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