Fosroc Conbextra GP2

Fosroc Conbextra GP2 is a high-flow, non-shrink, cementitious precision grout engineered by Fosroc Chemicals. Formulated as a dry, ready-to-use powder, it requires only the addition of clean water on-site to produce a free-flowing, high-strength grout.

It features a specialized gaseous expansion system that compensates for plastic shrinkage and settlement, ensuring full surface-to-surface contact and structural load transfer beneath baseplates and machinery foundations. Designed to fill gap thicknesses ranging from 10 mm to 100 mm, Fosroc Conbextra GP2 is the benchmark choice for precision engineering, structural anchoring, and industrial grouting.

Key Features & Benefits

• Dual Gaseous Expansion System: Compensates for plastic settlement and shrinkage in the fresh state, ensuring 100% surface contact beneath baseplates and avoiding load-bearing voids.
• High Early & Ultimate Strength: Rapid strength gain allows for early tensioning of anchor bolts, fast removal of formwork, and minimal downtime during machine installation.
• Exceptional Flowability: The low-viscosity, self-leveling consistency allows the grout to flow easily into narrow gaps, around dense reinforcement, and under wide machine bases without mechanical vibration.
• Chloride-Free Formulation: Formulated without added chlorides or metallic aggregates, eliminating the risk of corrosion on embedded steel anchor bolts or structural baseplates.
• Low Permeability Matrix: Produces an exceptionally dense cured matrix that resists water penetration, oil absorption, and chemical ingress.
• Pre-Blended Quality Assurance: Factory pre-batched to eliminate on-site proportioning errors of cement, sand, and additives.

Primary Applications

• Machinery Foundations: Grouting under heavy reciprocating machinery, turbines, compressors, generators, and heavy-duty industrial presses.
• Structural Baseplates: Grouting beneath structural steel columns, stanchions, crane rails, and portal frames.
• Anchor Bolt Fixing: Anchoring high-tensile foundation bolts and rebar dowels into concrete slabs and footings.
• Precast Concrete Connections: Bedding and joint filling between precast wall panels, beams, and columns.
• Bridge Bearing Pads: Grouting beneath bridge bearing seats and precast bridge girder pockets.