Hollow dense blocks are ideal for agricultural and commercial applications. Strong, reinforced walls can be constructed quickly and economically.

Manufactured from Class 2 aggregates and consist of up to 30% recycled raw material.

Applications:

  • Suitable where large, external wall panels are required, e.g. sheds, bunkers, retaining walls.
  • Some or all of the cores can be filled with concrete and steel rebar to form extremely strong, reinforced walls with high resistance to lateral loads, ideal for lining swimming pools, ponds etc.
  • Standard texture finish provides an excellent surface for mortars, renders and plasters.

Manufactured to BS EN 771-3.

Related literature

The following content references this product:

Standard product features

Size:

440 x 215 mm.

Finish:

Standard texture finish provides an excellent surface for mortars, renders and plasters.

Dimensional tolerance:

Category D1.

Dry density:

1900–2100 kg/m³.

Thermal conductivity:

0.88 W/mK (protected inner leaf), 0.92 W/mK (exposed outer leaf).

Fire resistance to BS EN 13501-1:

Class A1.

Configuration to BS EN 1996-1-1:

Hollow, group 2.

Options

Compressive strength:

7.3 and 10.4N/mm³ available as standard, higher strengths are available to order.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-80-50/300 Aggregate concrete blocks

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying

Manufacturer

Name:

Thomas Armstrong (Concrete Blocks) Ltd

Tel:

+44 (0)1748 810204

Product reference

Hollow Concrete Block

Compressive strength

[7.3 N/mm²]
[10.4 N/mm²]

Thickness

[140 mm]
[190 mm]
[215 mm]

Manufacturer details

Bridge Road,
Brompton-on-Swale,
Richmond,
North Yorkshire, DL10 7HW
Tel +44 (0)1748 810204
Fax +44 (0)1748 813950
NBS Plus
NBS National BIM Library