Ramco Hard Worker Bonding Agent SBR HW404

Ramco Hard Worker Bonding Agent SBR (HW404) is a high-performance, styrene-butadiene rubber (SBR) based polymer latex. Specifically engineered as an additive for cementitious mixes, it significantly enhances the waterproofing, bonding, and mechanical properties of mortar and concrete.

Unlike ordinary polymer additives, HW404 is designed to handle the high-alkaline environment of cement, making it an essential multi-purpose "modifier" for structural repairs, waterproofing, and high-strength bonding.

Key Features & Benefits

• Exceptional Adhesion: When used as a bond coat, HW404 creates a powerful bridge between old and new concrete, preventing de-bonding and ensuring structural continuity.
• Waterproofing Excellence: It reduces the permeability of mortars, making them highly resistant to water ingress—ideal for use in "wet areas" and external repairs.
• Flexibility & Crack Resistance: It improves the flexural strength of the mix, allowing the mortar to withstand minor structural movements and thermal expansion without cracking.
• Reduced Shrinkage: HW404 minimizes the drying shrinkage of cement mixes, which is a common cause of failure in traditional repair patches.
• Chemical Resistance: Enhances the resistance of concrete surfaces to mild chemicals, salts, and chlorides, protecting the internal steel reinforcement from corrosion.
• Improved Workability: It acts as a plasticizer, allowing for a lower water-cement ratio while maintaining a smooth, easy-to-apply consistency.

Primary Applications

• Structural Repairs: Modifying repair mortars for spalled concrete in columns, beams, and slabs.
• Bonding Agent: Used as a slurry (mixed with cement) to bond new screeds or plasters to old concrete surfaces.
• Waterproofing Slurry: Ideal for waterproofing toilets, sunken slabs, and small terrace areas when mixed with cement.
• Cladding & Masonry: Enhances the bond of tiles, stones, and marble cladding to walls.
• Floor Screeds: Added to floor toppings to increase wear resistance and prevent dusting.

Why Choose HW404 Over Regular Admixtures?

Many local bonding agents are PVA-based, which can re-emulsify (soften) when exposed to water over time. Ramco Hard Worker HW404 is SBR-based, meaning it is permanently water-resistant and stays tough even in submerged conditions. For any project in high-moisture areas like Bangalore, it provides the most reliable long-term protection for your structure.