Water Infiltration around a Pipe Annulus
Leave a CommentWater was leaking around the annulus of this pipe intrusion. To stop the leaking water, polyurethane grout was injected utilizing a mechanical injection packer and a battery powered grease gun. The grout used was Hyperflex, which is a pre-catalyzed single component hydrophobic polyurethane. Hyperflex reacts with moisture to form a flexible foam and is NSF/ANSI/CAN […]
Grout Injection of Sheet Piling
Leave a CommentThis steel sheet piling flared out at the bottom during installation. This flaring created a non-watertight seal, enabling lake water to enter the work area. To stop the unwanted water, polyurethane grout was injected into the void. To inject the grout, a hole was drilled into the sheet pile and a mechanical injection packer was […]
Simple Karst Remediation with Polyurethane Grout
Leave a CommentKarstic formations can impose many challenges for mining and infrastructure. These underground passages often channel water into unwanted areas. In this instance, a sinkhole opened in a stream bed, traveled through karst, and was emptying into a quarry. To stop the water from traveling down the sink hole and to return the water to its […]
Tags: ground control, Hyperflex, mine, void filling, water infiltration, water leak, water stop
Tunnel Passing Through Fault Zone helped with Polyurethane Injection
Leave a CommentThe polyurethane grout, SealGuard II, was needed to mine forward in this tunnel. The tunnel was in a fault zone, and all the voids were to be filled with concrete. However, when injected, the concrete leaked out of the face. To contain the concrete, polyurethane grout was injected to provide a buffer. SealGuard II reacts […]
Tags: ground control, grout, injection, mine, SealGuard II, tunnel leak, void filling, water infiltration, water leak
Water Leaking through Old Mine Core Hole Stopped with Polyurethane
Leave a CommentThis underground mine, which is 1,100 feet below the surface, mined into a core hole taken from the surface. The core hole was dumping significant amounts of ground water into the mine. To stop the water inflow, a high-pressure probe and polyurethane grout was implemented. Grouting contractor Sub-Technical, Inc. used their specially designed probe to […]
Tags: core hole, high pressure water stop, mine, polyurethane grout, SealGuard II, sub-technical, water stop
Wastewater Basin Exterior No Dig Polyurethane Grout Injection
Leave a CommentGroundwater was leaking through the joints of these underground chambers at a wastewater treatment plant. Injecting polyurethane grout from inside the structure would provide an ideal fix to stop the groundwater from infiltrating. However, these chambers have various pipes and support structures that would make entry and performing the work nearly impossible. The solution was […]
Lake Spillway Leak Repaired with Polyurethane Injection
Leave a CommentWater was leaking out of this lake because it was flowing under the spillway instead of over it. Polyurethane grout injection was used to remedy the situation. Holes were drilled on the face deep enough to reach the backside of the spillway. Mechanical packers were then placed in the hole. The installed packers are now […]
Tags: ground control, grout injection, spillway, water leak
Elevator Shaft Repair and Water Control with Polyurethane Grout Injection
Leave a CommentThis 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
Leave a CommentA 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
Leave a CommentClick 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. […]