Mapei Mapegrout T40

Non Hazardous
A medium strength (40 MPa), shrinkage-compensated, fibre reinforced, thixotropic mortar for concrete – class R3.
Available in 25 Kg in Grey
£29.74 £24.78
In stock
Product Description

Mapei Mapegrout T40 medium strength (40 MPa), shrinkage compensated, fibre-reinforced, thixotropic mortar for repairing degraded vertical or horizontal concrete surfaces.

Mapegrout T40 is a grey powdered mortar composed of cement, graded aggregates and special additives formulated for repairs to degraded concrete surfaces, corners of pillars and beams, tunnels, linings for canals, filling of rigid joints, etc. Mapegrout T40 is mixed with water to form an easy to apply thixotropic mortar that can be applied without slumping even in substantial thickness's on vertical surfaces without formwork.

When fully cured, Mapegrout T40 has moderate flexural and compressive strength; a modulus of elasticity, thermal expansion coefficient and permeability coefficient similar to that of medium quality concrete; is waterproof and has excellent adhesion to existing concrete surfaces.

Best Uses

Use Mapegrout T40 for vertical or horizontal repairs to degraded concrete surfaces, balconies damaged by rusted reinforcing bars, reconstruction of concrete coverings of reinforcing bars, repair of surface irregularities including exposed aggregate, joints between new and old concrete, holes in formwork concrete, protruding steel, etc.


Mix Mapegrout T40 with water either in a cement mixer or using a drill fitted with a mixing attachment, using a slow speed. Mapegrout T40 can be spray applied or using a trowel onto a prepared substrate.

Technical Details


  • London Underground Approved Products Register (APR) ID 2631
  • Complies with European Standard EN 1504-3 R3


  • Mapegrout T40 is suitable for repairs to vertical or horizontal concrete surfaces
  • Medium strength, shrinkage compensated, fibre-reinforced, thixotropic mortar
  • Mapegrout has moderate flexural and compressive strength
  • Compatible with other Mapei concrete repair and finish products
  • Application temperature range: +5 to +35 degrees C.
  • Pot life of mix 1 hour
  • Available in 25 Kg bags

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

Recommended products to use