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FOSROC Renderoc LA55

High-Flow Structural Concrete Repair Mortar

Fosroc Renderoc LA55 is a high-performance, dual-expansion micro-concrete engineered for large-scale structural reinstatement. It is specifically designed for restricted access areas and highly congested reinforcement where traditional hand-applied mortars are impractical. Its self-compacting properties ensure 100% encapsulation without the need for vibration or compaction.

Key Benefits & Features

  • Maximum Compatibility: Optimized for concrete compressive strengths between 30 - 60MPa.
  • Shrinkage Control: Advanced dual-expansion system provides superior control over plastic and long-term drying shrinkage.
  • Low Alkali Content: Minimises the risk of alkali-silica reaction (ASR), making it suitable for sensitive structural repairs.
  • Self-Compacting Flow: Exceptional fluidity allows for easy pumping or pouring into restricted locations without honeycombing.
  • Extreme Protection: Very low permeability provides a barrier against carbon dioxide and chlorides, protecting embedded steel.
  • AS/NZS 4020:2005 Certified: Potable water approved for safe use in sensitive environments.

Common Applications

Renderoc LA55 is the preferred choice for electro-chemical repairs, incipient anode protection (such as Galvashield XP), and Cathodic Protection systems. It achieves a superior bond to concrete substrates without the need for an independent primer.

Technical Resources

Technical specifications for Renderoc LA55 provided by Fosroc Australia.