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Product Information
Technical Datasheet
Safety Datasheet


Mapegrout Gunite FSD is a one-component premixed cementitious mortar composed of hydraulic binders, silica fume, selected aggregate and special additives manufactured according to a formulation developed in the MAPEI research laboratories. When mixed with water Mapegrout Gunite FSD acquires a thixotropic consistency and can therefore be easily applied on vertical and overhead surfaces in substantial thickness.


  • Repair of concrete lining in road/rail/subway tunnels.
  • Fast support during excavation for D&B, hard rock TBMs and foundations.
  • Covering stone or masonry in tunnels.
  • Repair of damaged bridges.
  • Repair of hydraulic works such as canals, tunnels, reservoirs, etc.
  • Repair of industrial concrete structures.


The hardening process starts very early after the application, in order to improve:

  • Speed of application (several layers in a shorter time);
  • Safety during operation: manpower and equipment can move under the same area in shorter time if compared to standard mortars.

After hardening, Mapegrout Gunite FSD:

  • Has high flexural and compressive strength;
  • Is watertight;
  • Adheres very strongly to old concrete, provided the concrete is first saturated with water, and to reinforcement bars, especially when they are first treated with Mapefer or Mapefer 1K;
  • Resists sulphates;
  • Resists carbonation;