Elevator Shaft Repair and Water Control with Polyurethane Grout Injection

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This elevator shaft was leaking groundwater in between the floor and the first course of concrete filled block walls.  Although this shaft has a drainage system, it needed to be dry to pass the final building inspection.  To stop the unwanted inflow, polyurethane grout was injected to seal the leak paths. The grout used was […]

Tunnel Boring Machine Brush Replacement and Water Control

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A view of the tail seal brushes on a tunnel boring machine.  In this situation, the tail seal brushes needed replaced and there was water flowing through seams in the tunnel segments. To control the heavy flow of water, polyurethane grout was injected around the leaks.  The grout used was SealGuard II, which is manufactured […]

Effective Precast Concrete Water Sealing

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Click to Expand Water intrusion can cause serious structural damage to buildings, leading to costly repairs and potential safety hazards. That’s why selecting an effective water sealing solution is crucial for any construction project. Precast concrete structures have low permeability rates, which means they can effectively prevent water intrusion and provide reliable and durable sealing. […]

Everything You Need To Know About Manhole Repair

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Click to Expand Manholes are essential to any urban infrastructure, providing access to underground utilities such as water, sewage, and electrical systems. However, they can deteriorate, crack, or collapse over time due to constant exposure to heavy traffic, weather conditions, and corrosive materials. These failures can cause accidents, traffic disruptions, and even sewer backups, resulting […]

Leaking Pipe Intrusion Sealed

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Water leaking around pipe intrusions can be stopped with polyurethane grout.  In this instance, a hole was drilled at an angle to reach the annular space in-between the pipe and the concrete.  SealGuard II, a dual component polyurethane grout, requires a static mixer to mix properly.  The mixer gets inserted into the drilled hole, then […]

Directional Drilling Water Control

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When water is encountered during directional drilling, the most common method to try and stop it is pumping concrete. However, if there is a large volume of water, the concrete simply washes away and doesn’t seal the leak.  Concrete also shrinks as it dries, so new leak paths are formed.  In this instance concrete was […]

Joining and Sealing Precast Concrete

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Click to Expand The primary purpose of adding sealant to the joints of precast concrete is to establish an extra layer of protection between the blocks or segments. This will prevent water or dirt from entering a construction joint. Common structures requiring joint sealants are catch basins, culverts, manholes, sumps, and trenches. Liquids take the […]

Key Considerations in Pre-Cast Concrete Crack Injection

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When it comes to pre-cast concrete structures, durability and strength are essential. However, even the most robust structures can experience damage over time due to weathering, impacts, and other factors. Thus, it is vital to assess the damage and determine the most appropriate repair method to restore the structure to its original strength and stability. […]

Step-by-Step Manhole Rehabilitation

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Manholes are an essential component of an area’s sewage system, serving as maintenance access points and providing structural support for the pipes. They are also crucial to the system’s proper operation, allowing for wastewater collection, transport, and treatment. However, manholes can deteriorate and become damaged over time. The most common causes of manhole damage are […]

Horizonal Drilling and Hyperflex Grout

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To install a pipeline underneath an interstate, a horizontal directional drill was used. However, the drilling discovered that the area consisted of large voids / karst zones. The pipeline itself needs to have a solid foundation to rest on. To fill the voids, polyurethane grout was injected into the problem areas. The grout used was […]

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