Block Jointing Mortar for AAC Blocks
BX Block is a premium, semi-premix, self-curing thin-bed mortar made for jointing AAC (Autoclaved Aerated Concrete) blocks. It is made from high-grade OPC 53 cement, dry graded sand (1 mm down) and specialized polymers, and it gives excellent compressive strength, water retention and stability. BX Block replaces traditional mortars that need a 10-12 mm joint with a 2-3 mm thin-bed application.
| Uses | |
|---|---|
| AAC Blocks | Fly Ash Bricks And Concrete Blocks |
| Thin-Bed Joints (2-3 mm) | Internal And External Use |
| Pack | 40 kg bags | |
| Shelf life | = 6 months from date of manufacture | |
| Physical nature | Free-flowing grey powder | |
| Bulk density | 1550 ± 50 kg/m³ | |
| Water demand | 25 ± 5% | |
| Mixing water | 25-30% by weight | |
| Workability (flow table) | 170-180 mm at 28% water content | at 27℃ |
| Pot life | 60 minutes | |
| Hard dry time | Approximately 24 hours | |
| Joint thickness | 2-3 mm | |
| Mortar requirement | 500-600 g per block | 650 mm x 150 mm block, 2-3 mm joint |
| Coverage | = 170 sq.ft per 40 kg bag | 2-3 mm joint |
| Ease of spread | Excellent (compared to conventional mortars) | |
| Water retentivity | 90-100% (on AAC blocks) | |
| Curing | Self-curing, no curing required | |
| Storage | Keep in a dry place, protected from moisture. Do not leave bags open. |
| Strength & Adhesion : | ||
|---|---|---|
| Compressive strength (28 days) | ≥ 8 N/mm² | IS 2250 / ASTM C-109 |
| Splitting tensile strength | ≥ 0.40 - 0.5 N/mm² | ASTM C-1660-09 |
| Tensile adhesion strength (28 days) | ≥ 0.75 N/mm² | EN 1348 |
| Pull-off adhesion strength (28 days) | ≥ 0.60 N/mm² | On hard concrete |
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