PU Grouting Injection - Sri Lanka's Leading Waterproofing Service Provider

Polyurethane (PU) injection

What is PU grouting?

Polyurethane (PU) injection, a standard method for halting water leakage, utilizes the hydrophobic properties of polyurethane. This versatile technique is extensively employed to repair cracks in concrete and honeycombed concrete by employing a PU injection grouting machine.

When PU comes into contact with water, it undergoes a chemical reaction, expanding and transforming into foam to effectively seal concrete pores and cracks. The expansion potential of PU can reach up to 20 times the volume injected, making it highly efficient for leak repair in concrete structures.

PU injection is widely regarded as the most effective method for repairing leaking cracks in concrete. Its popularity underscores the adaptability and effectiveness of low viscosity polyurethane injection resins for sealing leaks, making it a preferred choice for civil, commercial, and residential applications.

Polyurethane (PU) injection

What is PU grouting?

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Properties of PU (Polyurethane)

Polyurethane, a fluid resin, is injected into various imperfections within concrete structures such as cracks, rock fissures, and expansion joints. Upon injection into a crack, polyurethane rapidly undergoes a chemical transformation from liquid to solid form.

The popularity of polyurethane resins in crack injection applications can be attributed to several key properties:

Short cure time, making it ideal for active leak sealing.
Exceptionally low viscosity, enabling effective sealing of even the finest cracks (less than 0.2mm in width).
Ability to cure in wet, actively leaking, or damp conditions.
Availability of numerous polyurethane resin formulations, allowing control over viscosity and cure time, particularly beneficial for repairing foundation cracks.
Flexibility post-curing, accommodating structural movement while maintaining sealed leaks.

Polyurethane grouting injection finds widespread use in civil construction and maintenance of civil assets due to its versatile application and reliability in repairing cracks and damage in concrete structures. It stands out as the most efficient and cost-effective method for repairing leaking cracks in significant concrete assets.

Applications include:

Civil Water – treatment plants, town water supply, pump stations, channels, canals

Sewage Treatment Plants – high voltage electrical pits, utility holes, chemical storage areas

Dams – diversion tunnels, dam walls, permanent plugs, dam walls, weirs

Tunnels – rail, road, access and electrical

Underground Structures

PU Grouting Contractor Singapore

How may we assist you? With over a decade of expertise, our team is poised to provide you with top-notch service tailored to your project’s needs.

Inspections

Upon receiving your inquiry, we will promptly organize a team to conduct a thorough inspection of your site. It’s important to note that not all water leakage issues can be resolved through PU injection. Our team will offer tailored advice based on the specific situation you are facing.

Identify Causes

Following the diagnosis session, we will present PU pressure grouting solutions for your consideration. If PU grouting is not deemed feasible, we will recommend alternative treatments to address the leakage issue.

PU Pressure Grouting Injections

They are performing the PU pressure grouting Injections with the warranty given.

Monitor

Upon completion of the PU pressure grouting injection, it is advisable for the owner to monitor the repair progress over time. Should there be any need, our team will gladly revisit the site for further inspections