Injection Grouting : PU & Epoxy Injection Grouting
What is Injection Grouting?

Injection grouting is a pressure-injection repair method in which a liquid grout is injected into cracks or voids through specially installed injection packers.

The grout travels through the crack or void and fills the available space. Once the material reacts and cures, it creates a seal or bond that helps prevent further water penetration.

The correct grout depends on whether the problem is primarily water leakage, waterproofing, crack sealing or structural strengthening.

Fosroc's concrete-repair guidance, for example, distinguishes between epoxy injection materials for certain deep structural cracks and polyurethane injection materials for water-bearing cracks where epoxy may not be appropriate.

Types of Injection Grouting
PU Foam Injection Grouting
Epoxy Injection Grouting
PU Plain Injection Grouting

Applications of Injection Grouting

Injection grouting is suitable for a wide range of construction and infrastructure applications.

Basement Waterproofing

PU injection grouting is commonly used to treat leakage through basement walls, floors, construction joints and cracks.

Podium & Parking Structures

Underground and podium parking areas can experience water ingress through construction joints and concrete cracks. Injection grouting can be used as part of a remedial waterproofing system.

Water Tanks

Injection systems can be used for appropriate cracks and leakage points in water-retaining structures. Material selection is especially important for potable-water applications.

Swimming Pools

Concrete cracks and construction joints in swimming pools can become leakage paths. Suitable PU injection systems may be used depending on the condition.

Construction Joints

Construction joints are common locations for water ingress. Injection grouting can be used to seal suitable joint leakage paths.

Tunnels

Injection grouting is used in tunnel and underground construction for controlling water ingress and sealing cracks and voids.

RCC Structures

Injection systems can be used for suitable cracks in beams, columns, slabs and walls. For structural repairs, the repair methodology should be established by a qualified structural professional.

Injection Grouting for Waterproofing Projects in Pune

In Pune, injection grouting is commonly considered for remedial waterproofing of basements, podiums, residential towers, commercial buildings, parking structures, water tanks and RCC structures.

For projects involving active leakage, the repair methodology should be based on the actual site condition rather than simply selecting a product by brand name.

CMC Corporation provides construction chemical solutions and waterproofing project support for builders, contractors, developers and infrastructure projects in Pune.

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Oct 5th, 2026 6:01 PM

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