PC-Inject Seal® PU 300

Flexible Polyurethane Injection Foam for Permanent Water Leakage Prevention

PACKAGING

PC-Inject Seal® PU 300 The product is available in

Part A: 15 Ltr
Part B: 5 Ltr

PC-inject Seal® PU 300 is a two-component Polyurethane injection resin with low viscosity designed for grouting and sealing cracks and fissures that hold water in concrete and brick structures. This solvent-free resin initiates a chemical reaction upon the mixture of both components, transforming into a flexible and elastic gel. When in contact with water, the resin expands, effectively creating a flexible seal. For optimal results, it is advisable to combine PC-inject Seal® PU 300 with PC-inject Seal® PU 200 to effectively stop water flow.

FEATURES

Excellent adhesion to dry and wet substrate.
Remains flexible at extremely low temperatures.
Cured resin remains stable and does not shrink over time.
Cured gel is chemically inert and nonhazardous to environment.
Resistant to high hydrostatic pressure and forms a permanent seal.
Cured gel is non-toxic and can be used in contact with potable water.
Extremely low Viscosity.
Ability to penetrate fine cracks under pressure.
The hardened gel/foam remains flexible. Can accommodate movement in concrete.
Forms a permanent seal which is highly elastic and flexible. Can accommodate movements in concrete.
Form a hydrophobic foam when it meets water in the cracks or fissures to force the water out from the structure.

USES

PC-inject Seal® PU 300 is meticulously developed to establish a durable and flexible seal within waterbearing cracks and fissures present in concrete, block work, and brickwork. This formulation is adept at sealing dry cracks and joints in concrete that are susceptible to shifting. Moreover, it proves efficient in injecting non-re-injectable hoses commonly utilized in concrete joints.

APPLICATION INSTRUCTION

Trained and experienced teams are recommended to conduct the injection grouting process. Prior to initiating grouting, it is imperative to thoroughly review the comprehensive method statement. The Polyurethane resin, comprising base and Hardener components, is supplied in distinct vacuum-sealed canisters. It is advisable to blend the entire kit in one
operation; however, for smaller areas, partial mixing may suffice. Ensuring the accurate volume mixing ratio is maintained is essential to achieve optimal performance.

INJECTION PROCESS

All fissures or joints requiring sealing should undergo a meticulous cleaning process to eliminate debris and loose particles. To establish a stitch-like pattern, it is advised to drill holes at a 45° angle on either side of the crack in a crisscross fashion, ensuring they intersect at the center. Subsequently, insert durable steel packers into the holes and firmly affix them. Address
any honeycombing in the concrete by sealing it with a quicksetting mortar plug. Prior to commencing the grouting procedure, thoroughly cleanse the hoses with a cleaning solvent to eliminate any residual impurities. Inject the required amount of blended resin into the feed container of the injection pump. Commence the injection grouting procedure by maintaining a steady pressure between 2 to 3 bar, incrementally raising it to a maximum of 4 bar. Start the injection either from the lower end or one extremity, progressing until the crack’s end or upon encountering resin rejection from the nearby
packer or the crack itself. Proceed with the injection process from the succeeding packer thereafter.

MIXING

Pour the required amount of hardener (Part B) into the resin (Part A) container following a 3:1 ratio (Part A: Part B), and thoroughly blend the mixture using a suitable paddle mixer connected to a standard drill. Stir the compound for about 3 minutes until achieving a consistent blend. It is essential to use the mixed resin within the specified pot life for optimal results.

HEALTH AND SAFETY

The product PC-inject Seal® PU 300 includes Isocyanate and demands the use of appropriate personal protective equipment (PPE) and safety glasses during handling and application. Injection grouting should be executed by proficient individuals. Improper use of the product may lead to potential hazards.