Mapegrout T40

Available in 25kg bags

WHERE TO USE

Repair of degraded vertical or horizontal concrete surfaces with mortar possessing medium mechanical performance characteristics. Some application examples

▪ Repair of degraded concrete surfaces, corners of pillars and beams, balconies damaged by rusted reinforcing bars.

▪ Repairs to diaphragms and tunnels.

▪ Concrete linings for canals and hydraulic projects.

▪ 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.

▪ Filling of rigid joints

▪ Filling of rigid joints.

TECHNICAL CHARACTERISTICS

Mapegrout T40 is a premixed powdered mortar composed of cement, graded aggregates and special additives manufactured from a formula developed in the MAPEI Research Laboratories. When mixed with water Mapegrout T40 forms an easy to apply thixotropic mortar that can be applied without slumping even in substantial thicknesses on vertical surfaces without formwork. When fully cured, Mapegrout T40:

▪ has moderate flexural and compressive strength;

▪ has a modulus of elasticity, thermal expansion coefficient and permeability coefficient similar to that of medium quality concrete;

▪ is waterproof;

▪ has excellent adhesion to existing concrete surfaces provided they are saturated with water and reinforcing bars are first treated with Mapefer or Mapefer 1K Zero.

If Mapegrout T40 is prepared by only adding water, it must be cured under damp conditions in order to guarantee that the product’s expansive properties develop completely and correctly. However, it is not very easy to guarantee that these conditions are created on site. Therefore, to guarantee that the expansive properties of Mapegrout T40 take place when drying in the open air, 0.25% of Mapecure SRA, a special additive which has the property of reducing both plastic and hydraulic