- Specified -
Epoxy Resin and Polyurethane Grout
Repairs at Water Treatment Plant
Sealing Active Leaks in Filter Gallery and Associated Basins Sealed
Overview
At a Texas Water Treatment Plant, active leaks in the filter gallery and associated basins were expertly sealed using specified polyurethane grout and epoxy resin. This article delves into the methods and products used to achieve this.
Active Water Leak Repair
Specified Product: Polyurethane Grout
The engineering team recommended using Hydrophobic Injection Foam Grout, administered through high-pressure injection equipment, to address all pipe penetrations in the filter gallery and specifically identified cracks with active leaks.
For the Water Stop Injection phase, the SealBoss 1510 Water Stop Foam NSF/ANSI 61 was selected and endorsed as the ideal solution for sealing the cracks effectively.
Structural Strength Repair
Specified Product: Epoxy Resin
Per the guidelines and specifications set by the engineering firm, the holding basins were emptied, and cracks were treated using a low-viscosity Structural Epoxy, applied at reduced pressures.
For reinforcing the structure, the combination of SealBoss 4040 and the 4500F non-sag adhesive paste was chosen and recommended.
Training and Expertise
SealBoss dispatched a technical expert on-site to guide the contractor in utilizing both injection techniques. The training encompassed the use of the approved SealBoss Injection Systems. This included the SealBoss P2002 high-pressure, single-component injection pump, equipped with mechanical injection packers, and the SealBoss PA 3000 low-pressure system, which operates at a 2:1 ratio and features surface-mounted injection ports.
Repair Method
Water Stop and Leak Sealing with Polyurethane Grout
The SealBoss P2002 injection pump was employed for the Water Stop injection, paired with SealBoss 1/2 inch aluminum and 5/8 inch stainless steel Injection Packers for effective grout delivery.
In the filter gallery section, packers were strategically positioned approximately 12 inches apart and 4 inches away from the pipe sleeve/annulus, encircling the pipe. For the designated cracks set to be filled with the SealBoss 1510 Hydrophobic Foam Grout, injection packers were spaced between 8 to 12 inches apart, adhering to the 1, 2, 3, 45 Degree Injection Guidelines.
Injection continued on the cracks until the emergence of the SealBoss 1510 water stop foam was clearly observed on the crack’s surface, indicating a successful fill.
Epoxy & Polyurethane Repairs
Pipe Penetration Injection
Structural Repair with Epoxy Resin System
Before initiating the injection process, the water basins were drained and dried in preparation.
The SealBoss PA3000, our professional, heavyduty pneumatic two-component epoxy pump, was utilized for the low-pressure Epoxy Injection phase. This pump was set-up to a 2:1 pumping ratio, aligning with the SealBoss 4040 LV Structural Epoxy’s 2:1 mixture ratio.
Cracks were meticulously traced, and surface-mounted ports were affixed 6 to 8 inches apart, positioned directly above the crack. These ports were securely anchored using the SealBoss 4500F Quick Seal Epoxy surface adhesive.
After the 4500F adhesive set, the 4040 LV epoxy was methodically injected into the ports. The process began from the lowest port and progressed upwards, leaving the subsequent vertical port open to ensure and verify seamless port-to-port flow.
Pre-Repair Inspection
Water Bearing Cracks
Products Used
Hydrophobic, High-Pressure Injection System
Injection Grout: SealBoss 1510 NSF/ANSI w/ 15x Accelerator
Injection Packers: 1/2” Aluminum Packers & 5/8” Steel PackersHigh Pressure Pump: P2002 Single Component Injection Pump
Cleaning Material: SealBoss R70 Pump Flush
Xylene, rags, bucketTools: 18” x 1/2″ drill bit & 18” 5/8” drill bit, 3/8” Crescent Wrench
Dead Blow Hammer, Hammer Drill, Access 110v Power, Vacuum, various toolsStructural Epoxy, Low Pressure Injection System
Injection Resin: SealBoss 4040 LV Structural Epoxy
Surface Anchoring Paste: SealBoss 4500F Quick Seal PasteInjection Ports: Surface Mount Tri-base Ports
Low Pressure Pump: PA3000 2:1 Dual Component Injection Pump
Cleaning Material: SealBoss R70 Pump Flush
Xylene, rags, bucketTools: Air Compressor, Angle Grinder with Diamond Wheel, various tools
If you have any questions on Specified Epoxy Resins and Polyurethane Grouts, please contact our team of qualified SealBoss representatives.
Schedule an on site consultation & full injection systems training.
Call us at 714-662-4445.
