AAC Blocks wall structure

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In AAC Blocks wall structure, can We do the Coating of Acrylic Polymer mixed with Cement from the Outside of the entire Building to prevent the Internal Damp, Reducing the Outside Cracks and Water Penetration ?

We, you can apply a coating of acrylic polymer mixed with cement to the exterior of an AAC (Autoclaved Aerated Concrete) block wall structure to help prevent internal dampness, reduce outside cracks, and minimize water penetration.
This type of coating is commonly known as an external wall coating or exterior rendering. It can provide several benefits, including:-
1. Waterproofing:- Prevents water infiltration and reduces water absorption by the AAC blocks.
2. Crack resistance:- Helps to bridge minor cracks and prevents further crack propagation.
3. Durability:- Enhances the exterior durability of the AAC blocks and protects them from environmental degradation.
4. Thermal insulation:- Can provide additional thermal insulation, reducing heat transfer and energy losses.
To ensure a successful application:-
1. Clean and prepare the exterior surface of the AAC blocks, removing any dirt, dust, or loose particles.
2. Apply a suitable primer or bonding agent to enhance the adhesion of the coating.
3. Ensure proper curing and drying of the coating to achieve optimal performance.

Can we join the AAC block with acrylic polymer mixed with cement and water in the ratio of 1:4 (AP:Water) apart from sand, cement with water mortar ?

Yes, we can use a mixture of acrylic polymer, cement, and water (in a 1:4 ratio) as an adhesive to join AAC blocks, in addition to the traditional sand, cement, and water mortar. This is often referred to as a “polymer-modified mortar” or “polymer-enhanced mortar”.
The acrylic polymer additive enhances the mortar's properties, providing benefits such as:-
1. Improved adhesion:- Enhanced bonding between the AAC blocks and the mortar.
2. Increased flexibility:- Reduced risk of cracking and improved accommodation of minor movements.
3. Water resistance:- Reduced water absorption and improved durability.
4. Enhanced durability:- Improved resistance to weathering, aging, and chemical attacks.
By using this polymer-modified mortar in conjunction with traditional sand, cement, and water mortar, we can achieve a strong, durable, and water-resistant bond between the AAC blocks.

Is internal water of Slabs to make Seepage and Dripping water from the ceiling ?

Yes, internal water in slabs can lead to seepage and dripping water from the ceiling. Here's how:-
1. Water ingress:- Water enters the slab through cracks, joints, or porosity.
2. Water migration:- Water moves through the slab, driven by gravity, capillary action, or pressure.
3. Water accumulation:- Water accumulates at the underside of the slab, creating a water film or puddles.
4. Seepage and dripping:- Water seeps through the ceiling material (e.g., plaster, drywall, or paint) and drips down, causing visible water stains or leaks.
Factors contributing to internal water in slabs include:-
– Poor construction practices
– Cracks or defects in the slab
– High water table or groundwater pressure
– Inadequate slope or drainage design

Can we arrest the water Seepage or Dripping from the Ceiling by pressure grouting with Acrylic Polymer mixed with Cement?

Yes, pressure grouting with acrylic polymer mixed with cement can be an effective way to arrest water seepage or dripping from the ceiling. This method can help to:-
1. Fill cracks and voids in the slab
2. Reduce water permeability
3. Strengthen the concrete
4. Prevent further water ingress
The acrylic polymer additive enhances the grout's performance by:-
1. Improving adhesion to the concrete
2. Increasing flexibility and durability
3. Reducing water absorption
4. Enhancing chemical resistance
Pressure grouting may not be effective in all cases, especially if:-
1. The water ingress is due to a high water table or groundwater pressure
2. The slab has significant structural damage or deterioration
3. The ceiling material is severely damaged or deteriorated

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