AAC block adhesive

In Compliance with: European Norms

Adhesive for fixing of AAC block, concrete block & fly ash bricks etc.

Wallnut Lite AAC block adhesive is an Eco friendly, lightweight, polymer-modified, mineral-based ready to use adhesive for fixing of all kind of AAC (Autoclaved Aerated Concrete) blocks, concrete blocks, fly ash bricks and other absorbent blocks and bricks.

Wallnut Lite Block adhesive is designed for doing work with speed and ease. Lite Block adhesive must be mixed with water in order to obtain smooth working paste to apply on the surface of block or bricks in the thickness of a minimum 2 mm. & maximum 6mm.

AAC block adhesive

Advantage of Wallnut Lite AAC Block Adhesive  over cement or traditional jointing mortar

  • Guaranteed fixing of all kind of AAC block, absorbent brick, and concrete block.
  • Perform with minimum thickness of 2 mm. can be used till 6 mm.
  • Exceed strength of class one adhesive as per IS norms.
  • Very high coverage compares to conventional block jointing mortar.
  • High strength once fully dry and can be used up to full room height for fixing of AAC  blocks. 
  • No water curing required.
  • Saves time & labour.
  • Easy spread and creamy workability.
  • No need to mix any extra cement.
  • Very low VOC and suitable for green building credit point.

Suitable areas of AAC block adhesive

  • Internal & external.
  • Residential, commercial & industrial buildings.
Suitable surfaces:
  • New or old fully cured absorbent plasters. 
  • New or old fully cured absorbent concrete, IPS, or PCC floors which are sound and stable.
Suitable covering material:
  • AAC block (Autoclaved Aerated Concrete)
  • Concrete block, Hollow concrete blocks.
  • Absorbent machine cut bricks, fly ash bricks, etc.
Surface Preparation:
  • Ensure that the base surface such as screed/plaster on which product to be applied are sound, clean and free from all foreign material such as oil, grease, dust, etc. 
  • Ensure that AAC block or brick is clean and free from dust.
  • Before applying the AAC block adhesive onto the block surface, splash the water and let it surface dry to improve the workability of the adhesive.
  • Follow the concrete expansion joint and connection joint as per standard.
  • Mix Wallnut Lite Block 40 kg. bag of powder with approx. 10 lt. of clean water. Use an electric low-speed stirrer to have desirable results. Manual mixing can compromise the performance of AAC block adhesive. 
  • Adjust the water quantity as per ambient temperature. The final mix must be a workable paste.
How to apply:
  • Moist the surface of the block with water before applying the adhesive. Once surface is moist, spread the adhesive onto the surface of the block with help of notched trowel in the thickness of 2-3 mm. or as needed.
  • Once AAC block adhesive is applied, fix the blocks onto adhesive before skin formation and press firmly. In case adhesive dries too fast due to surface absorption of the block and windy surround, then apply at a time in small areas of the block surface.
  • Leave appropriate space between the concrete walls and blocks to accommodate surface movement. Fill the joint with the correct sealant or flexible material.
  • Once AAC block adhesive is fully cured, apply the plaster or any other covering.
Technical Performances & Working Data

In compliance with EN norms 12004

Tensile adhesion (porous surface):  1.0 N / mm2:  As per EN 1348

Tensile Adhesion after heat cycle: 0.55 N / mm2: As per EN 1348

Tensile Adhesion after water immersion: 0.66 N / mm2: As per EN 1348

Tensile Adhesion after Freeze-thaw cycle: 0.52 N / mm2: As per EN 1348

(Final results @ 28 days. 23° C. & 50% humidity)

In compliance with IS 15477-2019: for Type 1 Adhesive

Tensile Adhesion (Dry condition) : ≥ 1.0 N/mm2

Sheer Adhesion (Dry Condition) : ≥ 1.2 N/mm2

(Final results @ 28 days. 27° C. & 65% humidity)