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Attention: This product is special order only, delivery of product can take an estimated 1 week or more. Please contact us directly for more information.
Use Mapei Mapegrout T40 for: Structural concrete repairs, overhead and vertical patching, potable water-safe applications.
Mapei Mapegrout T40 is a high-performance, shrinkage-compensated, thixotropic repair mortar designed for vertical and overhead concrete repair applications. This cement-based mortar delivers rapid strength gain—achieving 75 MPa compressive strength in 28 days—and is suitable for both structural and cosmetic repairs. It’s certified for potable water contact, making it ideal for water tanks, treatment plants, and infrastructure projects. Its thixotropic nature ensures no slump on application surfaces, even without formwork.
Primer Information: For reinforcing bar protection, apply Mapefer or Mapefer 1K prior to use. This ensures long-term corrosion resistance in coastal and structural environments.
Cure Time: Initial set within 1 day and full cure in 28 days. Fast-setting nature allows rapid turnaround for urgent structural repairs and recoating.
Coverage Rate: Each 25 kg bag yields approximately 13.3 litres of mortar—ideal for patch repairs and high-volume projects with reduced waste.
Application Temperature Range: 5°C to 35°C (41°F to 95°F), ideal for Australian site conditions across all seasons.
Chemical Properties: Composed of Portland cement, graded aggregates, fibre reinforcement and chemical additives. Fully complies with EN 1504-3 Class R3 and AS/NZS 4020 for potable water contact.
Key Features of Mapei Mapegrout T40
- Thixotropic mortar for vertical and overhead applications without formwork
- Fast strength development: 45 MPa in 1 day, 75 MPa in 28 days
- Potable water compliant – ideal for tanks, reservoirs, and treatment plants
- Non-shrink formulation ensures dimensional stability and crack resistance
Why Choose Mapei Mapegrout T40:
- Reduces downtime on repair projects thanks to rapid curing
- High flexural and compressive strength for load-bearing surfaces
- Safe for water infrastructure projects across Australia
- Easy application for complex vertical and overhead jobs
When to Choose Mapegrout T40 versus Alternatives:
- Choose Mapegrout T40 over general patching mortars when: High structural integrity or potable water compliance is required.
- Consider other options when: Repair depth exceeds 40 mm in one pass—use flowable repair mortars instead.
Trade-Specific Applications for Mapei Mapegrout T40:
For Builders and Carpenters:
- Repair cracked or spalled beams, columns, and wall joints
- Apply to vertical and overhead surfaces without shuttering
- Maintain surface integrity with rapid strength gain
For Civil Construction:
- Bridge, tunnel, and culvert repairs requiring R3 classification
- Precast panel edge protection and anchorage zones
- Water utility infrastructure in compliance with AS/NZS 4020
Application Information
- Required Tools: Trowel, mortar mixer, spray pump (if applicable), float
- Trade-Specific Tips: Pre-saturate concrete surface to SSD condition before application
- Common Issues and Solutions: Avoid excessive water addition to prevent reduced strength and durability
Storage and Shelf Life
- Storage Requirements: Store in dry, covered area at 5°C to 35°C
- Shelf Life Information: 12 months from production in original sealed packaging
- Temperature Considerations: Protect from frost and high humidity during storage
Certifications and Compliance
- EN 1504-3: Class R3 Structural Repair Mortar
- AS/NZS 4020:2005 – Potable Water Compliance
Frequently Asked Questions About Mapei Mapegrout T40
Q: Can I apply Mapegrout T40 to overhead surfaces without formwork?
A: Yes. Mapegrout T40 is thixotropic, meaning it holds its shape when applied vertically or overhead, making it ideal for soffit and beam repairs without needing formwork.
Q: Is it safe to use in potable water tanks?
A: Yes. Mapegrout T40 complies with AS/NZS 4020:2005, which makes it suitable for contact with drinking water infrastructure such as tanks, reservoirs, and pipes.
Q: What surface preparation is required?
A: The substrate must be clean, sound, and saturated-surface-dry (SSD). Remove any loose materials and contaminants. Steel reinforcement should be primed with Mapefer or Mapefer 1K.
Q: Can I add extra water to increase flow?
A: No. Adding excess water compromises the strength and durability of the mortar. Always follow the mixing ratio of 3.8 to 4.1 litres per 25 kg bag.
Q: How thick can I apply it in one pass?
A: Mapegrout T40 can be applied up to 40 mm thick in a single layer. For thicker applications, build up in layers, allowing proper curing between coats.
Use Mapei Mapegrout T40 for:
- Repairing damaged or degraded concrete surfaces, especially vertical or overhead areas
- Restoring water tanks and reservoirs to potable standards
- Rebuilding structural concrete components on bridges, tunnels, and columns
Why Use Mapei Mapegrout T40 for:
- High early strength allows for quicker project turnaround and reduced downtime
- Thixotropic formulation saves labour on vertical applications without formwork
- Certified compliance with potable water standards for utility work
How to apply Mapegrout T40:
- Prepare the substrate by removing degraded concrete and cleaning the surface.
- Mix Mapegrout T40 with water to the required consistency.
- Apply the mortar with a trowel or spray equipment.
- Treat reinforcing bars with Mapefer or Mapefer 1K.
- Cure the applied mortar to prevent cracking.
Mapei Mapegrout T40 limitations:
- Not suitable for layers thicker than 40 mm in a single application
- Not designed for movement joints or flexible repairs
- Should not be applied in temperatures below 5°C or above 35°C
Safety precautions when using Mapei Mapegrout T40:
- Personal Protective Equipment: Use gloves, safety glasses, and dust masks per Australian WHS standards
- Ventilation: Ensure good airflow when mixing in enclosed areas
- Handling: Avoid contact with skin and eyes; wash thoroughly after use
- First Aid: In case of contact, flush with water. Seek medical advice if irritation persists
Mapei Mapegrout T40 can be used on the following substrates:
- Concrete – pre-wetted (SSD), clean, sound substrate
- Reinforcing steel – primed with Mapefer or Mapefer 1K
- Masonry – suitable for solid block or brick repair when prepped correctly
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