FOAMJET T Ultra-Fast Polyurethane Injection Resin 43kg

Mapei FOAMJET T – Ultra-Rapid Two-Component Polyurethane Injection Resin for Waterproofing & Ground Consolidation (44kg)

Mapei FOAMJET T is a high-viscosity, ultra-rapid-setting, two-component polyurethane injection resin developed for waterproofing and consolidating structures affected by strong water ingress. It is particularly suitable for challenging underground and civil engineering applications, including tunnels, shafts, dams, diaphragm walls and other structures exposed to water pressure.

When the two components are mixed and injected using a suitable two-component pump, FOAMJET T reacts rapidly. In contact with water, it forms a strong polyurethane foam that expands within cracks and cavities to help seal water pathways. Where water is absent, the resin hardens without increasing in volume, rapidly sealing the injected area.

Key Benefits

• Ultra-rapid reaction: Develops a fast-setting polyurethane seal, with reaction time influenced by temperature and water conditions.
• For strong water ingress: Designed for injection waterproofing where structures are subject to significant water penetration.
• Water-reactive formulation: Forms polyurethane foam in contact with water to help fill and seal cracks and cavities.
• Ground consolidation: Suitable for consolidating and stabilising loose ground in underground works.
• High mechanical performance: Forms a strong polyurethane material after reaction.
• High-viscosity formulation: Developed for controlled injection into cracks, fissures and cavities.
• Halogen-free: Formulated without halogens, CFCs or PFAS, according to the manufacturer's product information.

Applications

FOAMJET T is intended for professional injection waterproofing and consolidation work in structures affected by strong water ingress.

• Waterproofing tunnels subject to high-pressure water ingress through cracks and construction joints.
• Sealing water ingress in shafts and hydraulic structures.
• Waterproofing dams, channels and bulkheads, including structures permanently immersed in water.
• Sealing cracks in damp or water-saturated floors and concrete slabs.
• Waterproofing diaphragm and pile walls exposed to constant contact with water.
• Waterproofing rock or loose-ground excavations and underground structures.
• Consolidating and stabilising soil and loose ground in underground works.

How FOAMJET T Works

FOAMJET T is supplied as two liquid components, Part A and Part B. The components are conveyed separately through a suitable two-component injection pump and mixed at the injection nozzle using a static helicoidal mixer.

When the mixed resin comes into contact with water, it reacts to form polyurethane foam that expands into cracks and cavities, helping to stop water ingress. In the absence of water, the resin hardens without expanding in volume.

The rapid reaction and increase in foam volume in wet conditions make FOAMJET T suitable for demanding injection waterproofing applications. Correct pump selection, injection equipment and installation procedures are essential.

Technical Information

• Manufacturer: Mapei
• Product: FOAMJET T
• Product type: Two-component polyurethane injection resin.
• Appearance: Liquid components.
• Component A colour: Light yellow.
• Component B colour: Dark brown.
• Mixing ratio: Component A : Component B = 1 : 1 by volume.
• Application method: Two-component injection pump with static helicoidal mixer.
• Reaction: Rapid polyurethane reaction; foaming occurs in contact with water.
• Standards: Meets the requirements defined by EN 1504-9 and the minimum requirements of EN 1504-5 for concrete injection, as stated in the manufacturer's technical documentation.

Consumption

Indicative consumption depends on the volume of the cavity being filled and the amount of water present.

• In the absence of water: Approximately 1.1 kg of mixed resin per litre of cavity.
• In the presence of water: Approximately 0.3 kg of mixed resin per litre of cavity.

These figures are indicative. Actual consumption will depend on the cavity dimensions, water conditions and expansion behaviour during injection.

Packaging

FOAMJET T is supplied in a 44kg set:

• Part A: 20kg.
• Part B: 24kg.
• Total kit weight: 44kg.

Frequently Asked Questions

1. What is Mapei FOAMJET T used for?

FOAMJET T is a two-component polyurethane injection resin used for waterproofing structures affected by strong water ingress. Applications include tunnels, shafts, dams, bulkheads, diaphragm walls and underground excavations. It can also be used for ground consolidation.

2. Can FOAMJET T be used where water is actively leaking?

Yes. FOAMJET T is designed for injection waterproofing in structures subject to strong water ingress. In contact with water, it reacts to form expanding polyurethane foam that helps seal cracks and cavities.

3. What is the mixing ratio for FOAMJET T?

The mixing ratio is 1:1 by volume, using a suitable two-component injection pump. The two components are mixed at the injection nozzle through a static helicoidal mixer. Follow the manufacturer's equipment and application instructions.

4. Does FOAMJET T expand when injected?

When FOAMJET T comes into contact with water, it forms polyurethane foam that expands to fill cracks and cavities. In the absence of water, it hardens without increasing in volume.

5. How much FOAMJET T is required per litre of cavity?

The manufacturer's indicative consumption is approximately 1.1kg per litre of cavity in the absence of water and approximately 0.3kg per litre in the presence of water. Actual requirements depend on the cavity and site conditions.

6. What size is the FOAMJET T kit?

FOAMJET T is supplied as a 44kg set containing 20kg of Part A and 24kg of Part B.

7. Is FOAMJET T suitable for ground consolidation?

Yes. The manufacturer identifies soil and loose-ground consolidation and stabilisation as applications for FOAMJET T, including in underground works.

Important Application Information

FOAMJET T is a specialist professional injection product. It must be applied using suitable two-component injection equipment and in accordance with the manufacturer's technical instructions. Injection work should be undertaken by trained and competent operatives.

Always consult the current technical and safety data sheets before use. Assess the structure, water conditions, injection points and equipment requirements before starting work. Product selection and the design of the repair or waterproofing system remain the responsibility of the project designer or specifier.

Buy Mapei FOAMJET T from Clever Shield

Clever Shield supplies professional Mapei waterproofing, injection and concrete repair products throughout the UK. We supply specialist materials for contractors working on basements, tunnels, underground structures, civil engineering projects and water ingress repairs.

Contact our team for product availability, pricing and delivery enquiries.

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