Fosroc® Renderoc RG is a precision-engineered, high-strength, free-flowing micro-concrete repair grout formulated for deep section structural rehabilitation and reinstatement. Designed with advanced cementitious binders, carefully selected aggregates, shrinkage-compensating additives, and high-performance polymers, Renderoc RG delivers exceptional durability, strong adhesion, and long-term stability even in the most demanding industrial and civil engineering applications. Its outstanding fluidity and self-compacting nature allow it to penetrate complex reinforcement zones, fill voids, and restore load-bearing capacity without the need for extensive vibration or mechanical compaction.

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Product Overview

Fosroc® Renderoc RG is part of Fosroc’s globally recognized Renderoc repair range, trusted by engineers and contractors for repairing large-volume deteriorated concrete sections. It is designed specifically for large structural repairs (>25 mm thickness) where conventional mortars or hand-applied repair materials are not suitable.

The material develops high early and ultimate compressive strength while minimizing shrinkage, ensuring a monolithic bond with the parent concrete. Its robust performance under dynamic load, thermal variation, and chemical exposure makes it ideal for a broad spectrum of infrastructure repair works.

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Key Characteristics

1. High Fluidity for Deep Section Repairs

Renderoc RG exhibits excellent flowability, allowing effortless pumping or pouring into confined spaces, heavily congested rebar zones, and inaccessible repair locations. This ensures complete void filling and uniform density throughout the hardened mass.

2. Shrinkage-Compensated Performance

Formulated with advanced shrinkage-compensating chemicals, the product maintains dimensional stability during the curing process. This prevents cracking, debonding, and internal stress development, ensuring long-term structural integrity.

3. Exceptional Bond Strength

The grout is designed to achieve a strong chemical and mechanical bond with existing concrete. When used with Fosroc® Nitobond EP or Nitobond AR bonding agents, adhesion is maximized even under adverse site conditions.

4. High Compressive Strength

Renderoc RG achieves high compressive strength levels, making it suitable for load-bearing and structural reinstatement works including columns, beams, piers, foundations, industrial floors, and bridge decks.

5. Durable and Non-Corrosive

The formulation is free from chlorides and corrosive substances, ensuring it does not trigger or accelerate reinforcement corrosion. This makes it suitable for long-term infrastructure projects requiring enhanced durability.

6. Versatile Application Methods

Compatible with hand-pouring, gravity placement, and pump application, Renderoc RG provides flexibility for different types of repair environments.

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Major Applications

1. Structural Concrete Reinstatement

Ideal for large-volume repairs where the structural element has experienced spalling, deterioration, or loss of cross-sectional strength. Suitable for bridges, dams, industrial plants, port structures, tanks, and road infrastructure.

2. Jacketing of Columns and Beams

Renderoc RG’s excellent flow and bonding make it perfect for structural jacketing works aimed at strengthening weakened columns or beams.

3. Repair of Industrial Floors & Foundations

Heavy machinery foundations, crane beams, plant floors, and vibration-prone areas benefit from Renderoc RG’s strength and density.

4. Void Filling & Encapsulation

Useful for filling large voids, honeycombs, cavities around pipe sleeves, anchor pockets, and behind precast units.

5. Precision Grouting

Performs well in grouting base plates, bridge bearings, pre-cast elements, turbine housings, and heavy mechanical equipment.

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Advantages

Excellent flowability eliminates need for vibration

High early and final compressive strength

Shrinkage-compensated for long-term stability

Chloride-free and non-corrosive formulation

Strong adhesion to concrete substrates

Suitable for pumping or pouring

Long working time and easy placement

Enhanced durability under load and harsh environments

Compatible with a wide range of substrates and bonding agents

 

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Application Guidelines (Summary)

1. Surface Preparation:
Remove loose or damaged concrete and clean reinforcement. Ensure substrate is sound and pre-wetted.

2. Bonding:
Apply appropriate Fosroc bonding agent if required.

3. Mixing:
Mix using a high-speed drill mixer or mechanical grout mixer. Ensure a smooth, flowable consistency.

4. Placement:
Pour or pump the mixed grout continuously to avoid air entrapment.

5. Curing:
Use Fosroc curing compounds or conventional water curing methods to protect the surface for optimal strength gain.

 

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Conclusion

Fosroc® Renderoc RG stands out as a premium-quality, deep-section structural repair micro-concrete designed to address the most challenging repair environments. Its combination of high flowability, superior bonding, shrinkage compensation, and exceptional compressive strength makes it a trusted solution for engineers and construction professionals worldwide. Whether used in bridges, buildings, industrial plants, or heavy infrastructure, Renderoc RG ensures long-lasting structural performance, reliability, and engineering excellence.