Description

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.

Uses

• 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.

Benefits

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;