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We are Part of the Thomas Armstrong Group

THOMAS ARMSTRONG

(CONCRETE BLOCKS)

LTD

GALLERY

DISCLAIMER

The block and texture images are intended for indicative purposes only and actual textures and shades may vary between manufacturing locations. Please contact your regional sales office for further information and sample blocks. We advise the construction of sample panels on site as masonry appearance cannot be appreciated from individual blocks.

Airtec Large - Walls

LARGE AERATED CONCRETE WALL BLOCKS

Airtec Large wall blocks are designed to provide significantly improved thermal insultation and air-tightness for internal and external walls by reducing the proportion of mortar joints in a wall. This effect is even greater when used in conjunction with 2mm thin-joint construction where the mortar proportion can be reduced by around 87% when compared to conventional walls using 10mm mortar joints.

They can also be used as Flooring, see Large Aerated Concrete Floor Blocks for more information.

These Concrete Wall Blocks can halve the number of blocks required to construct a wall all as opposed to traditional 215mm high wall blocks. However even though they are twice the height of a normal 215mm block, their very low weight complies with the manual handling guidelines and minimises the amount of repetitive lifts required.

All Airtec products are ISO 9001 Quality and ISO 14001 Environmentally certified and with the highest possible BES 6001 Responsible Sourcing rating of ‘Excellent’.

In common with all other Airtec blocks, these lightweight large concrete blocks offer the very best possible dimensional tolerance category of 'Thin Layer Mortar B' (TLMB) but are perfectly suitable for conventional 10mm mortar joint construction.

Our Aerated Blocks for walls are available in ‘Standard’ texture finish providing a plain-faced, smooth, cellular texture which is a suitable background for accepting renders and plasters.

In common with all aerated concrete in the UK, the surfaces of the building blocks may contain a random number of larger natural air bubbles/cells on the block surface due to an unavoidable consequence of the manufacturing process. These large cells are perfectly normal and are not a defect and do not detract from performance in any way. Although the blocks can be painted, we cannot guarantee that the surfaces will not contain some of these larger cells and we therefore do not recommend using Airtec for paint-grade or fair-faced applications.

APPLICATIONS

  • Inner & Outer leaf of cavity walls up to 3 storeys.
  • Internal partition walls.
  • Block & beam floor infill.
  • BRE Green Guide A+ rated walls.
  • External or Internal leaf of cavity walls.
  • Loading and non-loading walls.
  • Party or Separating Walls to Part E.
  • Robust Details Party Walls.
  • Flanking Walls to Party Walls.
  • Thin-Joint Construction.
  • Fire resistant Walls.

ADVANTAGES

  • ISO 9001 and ISO 14001 Certified
  • BES 6001 "EXCELLENT" Sustainability rating.
  • Manufactured to BS EN 771-4.
  • BBA Certified, Category 1 Manufactured.
  • Low Weight.
  • Exceptional thermal performance.
  • Cost-effective solution.
  • Safer handling
  • Easy to cut, drill and chase.
  • Accepts a range of aerated block light to heavy-duty fixings.

DOCUMENTS

  •  

    PROPERTY

    REFERENCE

    3.6 N/mm²

    7.3 N/mm²

    Face Size (L x H)

    Available Widths

    Dimensional Tolerance

    Gross Dry Density

    Mean Compressive Strengths

    Transverse Strength (min)

    Manufacturing Category

    Thermal Conductivity (Protected Inner Leaf)

    Thermal Conductivity (Exposed Outer Leaf)

    Moisture Movement

    Fire Resistance

    Configuration

    Available Texture Finish

    BS EN 771-4

     

    BS EN 772-16

    BS EN 772-13

    BS EN 772-1

    BS EN 772-1

    BS EN 771-4

    BS EN 1745

    BS EN 1745

    BS EN 771-4

    BS EN 13501-1

    BS EN 1996-1-1

     

    620mm x 430mm

    100mm

    Category D1

    530 (±50) kg/m³

    > 3.6 N/mm²

    Both grades exceed 3.5kN transverse strengths for flooring applications

    Category I

    0.11 W/mK

    0.13 W/mK

    0.40 mm/m

    Class A1 Reaction to Fire

    Solid - Group 1

    Standard

    620mm x 430mm

    100mm

    Category D1

    730 (±50) kg/m³

    7.3 N/mm²

    Both grades exceed 3.5kN transverse strengths for flooring applications

    Category I

    0.17 W/mK

    0.19 W/mK

    0.40 mm/m

    Class A1 Reaction to Fire

    Solid - Group 1

    Standard

  •  

    PROPERTY

    BLOCK STRENGTH

    3.6 N/mm²

    7.3 N/mm²

    ‘R’ Value

    0.91 m²k/W

    0.59 m²k/W

    Walled Weight

    Sound Reduction

    Block Weight

    Fire Resistance

    61 kg/m²

    39 Rw, dB

    16.5 kg

    4 Hours

    78 kg/m²

    41 Rw, dB

    21.8 kg

    4 Hours

  •  

    BLOCK STRENGTH

    BLOCKS PER PACK

    m² PER PACK

    WEIGHT PER PACK kg

    BLOCKS PER m²

    3.6 N/mm²

    7.3 N/mm²

    28

    28

    7.47*

    7.47*

    *The m² per pack DOES NOT include allowance for the mortar joint; this figure is for the block only.

     

    • A range of a wagon sizes are available, with or without pallets. Ring your local Sales office for further details.
    • Block weight is at the equilibrium moisture content of 3% by weight.
    • Pack weight allows for maximum moisture content when packed, actual delivered weight will be less.

    564

    660

    3.61

    3.61