MAPEGROUT 430 ZERO is a pre-blended, compensated-shrinkage mortar in powder form made from cementitious binders, selected fine-grained aggregates, special additives and synthetic fibres according to a formula developed in the MAPEI R&D laboratories. It is used to reintegrate concrete around steel reinforcement in degraded concrete structures and may be applied with a continuous-feed mortar pump.

Thanks to its particular formulation the product has excellent fatigue behaviour up to at least 300,000 cycles, which gives repaired structures a high level of resistance to cracking, including when subjected to dynamic loads induced under normal service conditions.

This particular characteristic, together with the requirements of EN 1504, helps increase the durability of elements repaired with MAPEGROUT 430 ZERO.