Celcon Aircrete Block - 440 x 215 x 100mm

Celcon Blocks High Strength Grade (7.3N/mm2 – identified with a black stripe on the block) are ide...

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BradfordsH+H - Celcon High Strength Aircrete Block - 440 x 215 x 100mm - 7.3N/mm2
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Product Information

Full details

This guide is for builders, architects, and DIY enthusiasts working on projects requiring high compressive strength. The Celcon Aircrete Block offers superior strength for structural applications, but its specialized nature means it requires careful handling and specific installation techniques. This block is ideal for foundations, lower storeys of multi-storey buildings, and load-bearing walls, featuring a compressive strength of 7.3 N/mm², thermal conductivity of 0.18 W/mK, and a density of 730 kg/m³.

All features

Model Part NumberNRC100/120
BrandCelcon

Extended Product Information

FAQs

What is the primary benefit of using Celcon High Strength Grade blocks?

The primary benefit is their high compressive strength (7.3 N/mm²), making them suitable for demanding structural applications like foundations and multi-storey buildings where load-bearing capacity is critical.

Can these blocks be used below ground level?

Yes, they can be used for foundations and below ground level. It is essential to ensure proper damp-proof course (DPC) installation to prevent moisture issues.

What type of mortar should be used with these blocks?

These blocks should be laid using a suitable cementitious mortar mix specifically designed for aircrete blocks, following manufacturer recommendations.

How do I identify a High Strength Grade block?

High Strength Grade Celcon blocks are identified by a black stripe on the block itself.

What are the dimensions of this block?

The dimensions of this Celcon Aircrete Block are 440mm (length) x 215mm (height) x 100mm (width).

Do these blocks offer any thermal insulation benefits?

Yes, they have a thermal conductivity of 0.18 W/mK, which contributes positively to the building's overall thermal performance and insulation.

How should I store these blocks on site?

Store blocks on a level, dry surface, ideally elevated off the ground. Cover them to protect from prolonged exposure to weather and excessive moisture.

Troubleshooting

Block cracking during handling or installation

Ensure blocks are handled carefully, avoiding dropping or excessive impact. Use appropriate lifting techniques. Check mortar mix and application; too wet or too dry can affect bond and lead to stress.

Poor mortar adhesion

Verify the mortar mix is correct as per manufacturer guidelines for aircrete blocks. Ensure block surfaces are clean and free from dust or debris before applying mortar. Check ambient temperature and humidity for optimal curing conditions.

Moisture ingress in foundation walls

Confirm that a continuous and correctly installed damp-proof course (DPC) is present. Ensure adequate drainage around the foundation and that the blocks are not exposed to standing water.

Inconsistent wall finish

Ensure consistent mortar joint thickness. If rendering or plastering, ensure the wall surface is true and plumb before applying finishes.

Pros and Cons

Pros

  • Exceptional compressive strength for critical structural elements.
  • Suitable for a wide range of building applications, from foundations to internal partitions.
  • Contributes to energy efficiency through good thermal insulation properties.
  • Durable and long-lasting material for robust construction.
  • Easy to identify its grade due to the distinctive black stripe.

Cons

  • May require specialized handling due to weight and density.
  • Higher cost compared to standard building blocks.
  • Requires appropriate mortar and laying techniques for optimal performance.
  • Not ideal for applications where extreme lightweight is the primary requirement.

Setup, Compatibility & Care

Setup and Installation:

These blocks should be laid using a suitable cementitious mortar mix designed for aircrete blocks. Ensure the substrate is level and clean before starting. For below-ground applications, proper damp-proof course (DPC) installation is critical to prevent moisture ingress.

Compatibility:

Celcon Aircrete Blocks are compatible with standard building practices and materials. They can be used in conjunction with other block types for different structural or insulation requirements within a building project. Ensure compatibility with your chosen mortar and any associated construction systems.

Care and Maintenance:

Unused blocks should be stored on a level, dry surface, ideally off the ground, and covered to protect them from excessive moisture and weathering. Once laid, the blockwork requires no specific ongoing maintenance beyond standard building upkeep. Protect fresh mortar joints from frost and rapid drying.

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