Product Description
1. PRODUCT OVERVIEW
This premium, polymer-modified dry-mix mortar is specifically engineered for the installation and jointing of Autoclaved Aerated Concrete (AAC) blocks, ALC panels, and lightweight partition boards. Formulated as a Thin-bed Mortar complying with ASTM C1660 standards, it utilizes high-quality cement, graded sand, and special polymer additives to solve common issues in AAC construction such as water absorption, cracking, and hollowing.
2. KEY FEATURES & BENEFITS
- ASTM C1660 Compliant: Meets rigorous international standards for thin-bed mortar.
- Superior Water Retention: Prevents porous AAC blocks from extracting water from mortar too quickly.
- High Bonding Strength: Creates a powerful bond that exceeds the tensile strength of the AAC block itself.
- Anti-Crack & Flexible: Accommodates slight movements in lightweight walls to prevent shrinkage cracks.
- Eco-friendly: Zero VOC emissions, safe for indoor use.
- Extended Pot Life: Usable for up to 2 hours after mixing.
3. TECHNICAL DATA (ASTM C1660)
| Property |
Test Method |
Standard Requirement |
Typical Value |
| Appearance |
Visual |
- |
Grey Powder |
| Compressive Strength |
ASTM C109 |
≥ 10.0 MPa |
≥ 15.0 MPa |
| Shear Bond Strength |
ASTM C1660 |
≥ 1.0 MPa |
≥ 1.8 MPa |
| Flexural Strength |
ASTM C348 |
- |
≥ 4.0 MPa |
| Water Retention |
ASTM C1506 |
≥ 95% |
> 98% |
| Air Content |
ASTM C231 |
< 12% |
8% - 10% |
| Pot Life |
- |
- |
2 Hours |
4. PRIMARY APPLICATIONS
- AAC/ALC Block Jointing: Thin-bed horizontal and vertical jointing.
- ALC Panel Installation: Splicing and bonding of partition wall panels.
- Lightweight Board Bonding: Suitable for ceramic particle, hollow core, and EPS sandwich panels.
- Surface Repair: Patching chips, holes, or leveling uneven AAC surfaces.
5. APPLICATION INSTRUCTIONS
Substrate Preparation:
- Ensure surfaces are clean, dust-free, and free from oil or loose particles.
- In extremely hot conditions, slightly dampen the surface to improve adhesion.
Mixing Process:
- Water Ratio: Mix 5.0 - 5.5 Liters of water per 25kg bag.
- Mixing: Use an electric drill mixer for 3-5 minutes until lump-free.
- Activation: Let the mixture rest for 5 minutes, then remix briefly before use.
Installation:
- Apply mortar using a notched trowel (3mm-6mm) for uniform coverage.
- Press panels firmly together to ensure zero voids and vertical alignment.
- Scrape off excess mortar immediately within the 20-minute open time.
6. PACKAGING & STORAGE
- Format: 25kg Paper Bag.
- Coverage: Approx. 5-7 m² per bag for 100mm thick blocks.
- Storage: Store in a cool, dry, ventilated place on pallets.
- Shelf Life: 12 months in original unopened packaging.
Frequently Asked Questions
Q: What is the main advantage of using thin-bed mortar for AAC blocks?
A: Thin-bed mortar reduces material consumption significantly (only 2-4mm thick) while providing superior thermal insulation and higher bond strength compared to traditional thick-bed cement mortar.
Q: Is it necessary to soak AAC blocks before applying this adhesive?
A: No, our formula features high water retention specifically designed to prevent porous blocks from sucking water out of the mortar, ensuring proper hydration without pre-soaking.
Q: How much area does one 25kg bag cover?
A: One 25kg bag typically covers between 5 to 7 square meters of wall area when used with 100mm thick blocks and a 3mm joint.
Q: Can this adhesive be used for outdoor wall panels?
A: Yes, it is suitable for both interior and exterior ALC panels and AAC block masonry due to its excellent moisture-proof and anti-crack properties.
Q: How long do I have to adjust the panels after application?
A: The open time is approximately 20 minutes, allowing sufficient time for alignment and vertical checks before the mortar begins to set.
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