Ramco Hard Worker Block Fix AAC HW302

Ramco Hard Worker Block Fix AAC (HW302) is a premium, high-strength, polymer-modified cementitious mortar specifically formulated for the thin-bed jointing of Autoclaved Aerated Concrete (AAC) blocks. While HW301 is a versatile joiner for various blocks, HW302 is the "AAC Specialist," engineered with a specific water-retention formula that matches the high suction properties of AAC blocks.

This factory-mixed "Dry Mix" solution ensures that your AAC masonry is built with maximum precision, speed, and structural integrity, replacing the outdated and heavy cement-sand mortar.

Key Features & Benefits

• High Water Retention: AAC blocks are highly porous and tend to suck moisture out of ordinary mortar, leading to weak joints. HW302 contains specialized additives that retain moisture within the mortar, ensuring a complete chemical hydration and a rock-solid bond.
• Ultra-Thin Joints (2–3 mm): Designed for precision, it allows for joints as thin as 2 mm. This minimizes the "thermal bridging" effect, helping your building stay cooler by maintaining the insulation properties of the AAC blocks.
• Self-Curing Technology: Once applied, HW302 does not require external water curing. This saves significant labor costs and water resources on the construction site.
• Exceptional Tensile Adhesion: The polymer-modified formula ensures that the mortar penetrates the pores of the AAC block, creating a bond that is often stronger than the block itself.
• Higher Coverage, Lower Cost: Because you only use a 3 mm layer instead of a 15 mm layer of traditional mortar, one 40 kg bag of HW302 can replace multiple bags of cement and several cubic feet of sand.
• Rapid Construction: The "ready-to-use" nature of the mix (just add water) allows masons to work much faster, significantly reducing the time taken to complete the superstructure.

Primary Applications

• Internal & External AAC Masonry: The primary choice for load-bearing and non-load-bearing AAC block walls.
• High-Rise Construction: Ideal for multi-story projects where reducing dead load and speeding up the masonry cycle are critical.
• Repair & Patching: Can be used to fill small chips or gaps in AAC blocks during the wall-building process.

Application Guide

1. Preparation: Clean the AAC blocks to remove loose dust. It is recommended to lightly wipe the bonding surface with a wet sponge just before applying the mortar.
2. Mixing: Mix one bag of HW302 with the required amount of clean water using a mechanical stirrer. Mix for 5–7 minutes until a smooth, paste-like consistency is achieved.
3. Applying: Use a notched trowel to spread a uniform layer of mortar on the horizontal and vertical surfaces of the block.
4. Placement: Set the block in place and firm it up using a rubber mallet. Check for alignment immediately.
5. Clean-up: Clean the tools with water immediately after use. Excess mortar on the blocks should be scraped off before it sets.

Why Choose HW302 for AAC Blocks?

Standard mortar often fails with AAC blocks because it shrinks and loses moisture too fast, resulting in hair-line cracks at every joint. Ramco Hard Worker HW302 is chemically matched to the density and absorption rate of AAC, ensuring a crack-free, monolithic wall that provides better sound and thermal insulation for your home.