Mapei Mapegrout T40 is a fibre-reinforced, thixotropic repair mortar used to rebuild damaged concrete where the material must stay in position instead of flowing away from the repair. It is particularly valuable for properly prepared vertical faces, columns, beams and exposed concrete edges affected by spalling or lost cover.
Use Mapegrout T40 to reinstate suitable concrete sections after loose and unsound material has been removed and the reinforcement treated as required. Its non-sag consistency helps form the repair profile on vertical and overhead areas, making it different from pourable repair grouts used to fill confined voids.
Mapegrout T40 suits specified general concrete reinstatement where working time and non-sag placement matter. For smaller repairs where rapid setting is essential, Mapegrout Fast-Set Rapido may be better suited. The correct product also depends on the repair design, thickness, exposure and required strength.
At a balcony edge or the face of a concrete column, a spalled area often needs its original profile reinstated before it can be protected or finished. Mapegrout T40 is designed for this kind of prepared repair. Its fibre-reinforced, thixotropic consistency helps the mortar stay where it is placed on vertical and overhead faces, rather than slumping like a pourable grout.
That makes it useful for localised reinstatement of beams, columns and exposed concrete surfaces once unsound concrete has been removed and reinforcement treated as specified. For a fine cosmetic finish, Planitop Fine Finish plays a different role; for repairs where exceptionally rapid setting matters, compare Mapegrout Fast-Set Rapido. Significant cracking, corrosion or structural damage still requires appropriate assessment before choosing a repair mortar.
Prepare the concrete and any exposed steel, respect the permitted build-up thickness and protect the fresh repair during curing. It is not an anchoring grout, cosmetic skim coat or substitute for assessing structural defects.
What strength is Mapegrout T40?
Current MAPEI Australia data describes it as a 40MPa concrete repair mortar.
How thick can it be applied?
About 30–35mm per layer.
What is the typical consumption?
About 18.5kg/m² per centimetre of thickness.
Can it be used for anchoring?
No. Use a MAPEI anchoring grout for anchoring work.
| Property | Value |
|---|---|
| Mixing Ratio | 100 parts of Mapegrout T40 with 15.5-16.5 parts water (approx. 3.8-4.1 L per 25 kg sack) |
| Coverage Rate | 18.5 kg/m² per cm of thickness |
| Application Temperature | from +5°C to +35°C |
| Compressive Strength | > 40 MPa |
| Flexural Strength | > 7.0 MPa |
| Class According To EN 1504-3 | R3 |
| Consistency | powder |
| Maximum Aggregate Size | 2.5 mm |
| Density | 1.25 g/cm³ |
| Solid Content | 100 % |
| Chloride Ions Content (according to EN 1015-17) | ≤0.05 % |
| Consistency Of The Mix | thixotropic |
| Density Of The Mix | 2200 kg/m³ |
| pH Of The Mix | > 12.5 |
| Pot Life Of The Mix (at +20°C) | approx. 1 h |
| Compressive Strength (1 day) | > 8 MPa |
| Compressive Strength (7 days) | > 30 MPa |
| Flexural Strength (1 day) | > 2.0 MPa |
| Flexural Strength (7 days) | > 5.5 MPa |
| Compressive Modulus Of Elasticity (28 days) | 25 GPa |
| Bond Strength To Concrete (28 days) | > 2 MPa |
| Capillary Absorption | < 0.20 kg/m²·h^0.5 |
| Thermal Compatibility (freeze-thaw cycles) | > 1.5 MPa |
| Thermal Compatibility (storm cycle) | > 1.5 MPa |
| Thermal Compatibility (dry thermal cycle) | > 1.5 MPa |
| Reaction to Fire | A1 (Euroclass) |
Here are some common examples on where Mapei Mapegrout T40 used by our customers.
