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Hollow Dense Concrete Block
Hollow Dense Concrete Block

Verified 5 months ago

Thomas Armstrong (Concrete Blocks) Ltd

Hollow Dense Concrete Block 215 mm

Verified 5 months ago

Thomas Armstrong (Concrete Blocks) Ltd

Hollow Dense Concrete Block 140 mm

Summary
Hollow dense concrete blocks suitable for agricultural and commercial applications.
Hollow dense concrete blocks suitable for agricultural and commercial applications.
Third party certification
Digital objects
Color
Grey
Grey
Finish
Textured
Textured
Material
Concrete
Concrete
Shape
Rectangle
Rectangle
Length
440 mm
440 mm
Width
140 mm, 215 mm
140 mm, 215 mm
Height
215 mm
215 mm
Warranty description
Lifetime
Lifetime

Specification

Standard
To BS EN 771-3.
To BS EN 771-3.
Block description
Standard common block.
Standard common block.
Configuration
Group 2.
Group 2.
Compressive strength
-
-
Mean value
7.3 N/mm².
7.3 N/mm².
Characteristic value
4.7 N/mm².
5.1 N/mm².
Category
II.
II.
Freeze/ thaw resistance
Freeze thaw resistant.
Freeze thaw resistant.
Thermal conductivity
0.88 W/mK (inner leaf).
0.92 W/mK (outer leaf).
0.88 W/mK (inner leaf).
0.92 W/mK (outer leaf).
Recycled content
20%.
20%.
Work sizes (length x width x height)
440 x 215 x 215 mm.
440 x 215 x 140 mm.
Tolerance category
D1.
D1.
Density
-
-
Gross dry density
1850-2100 kg/m³.
1850-2100 kg/m³.
Net dry density
2000 kg/m³.
2000 kg/m³.
Reaction to fire
Class A1 to BS EN 13501-1.
Class A1 to BS EN 13501-1.
Water absorption by capillarity
90 g/(m2 x s-0.5).
90 g/(m2 x s-0.5).
Water vapour permeability
5/15 µ.
5/15 µ.

Additional properties

Thickness
215 mm.
140 mm.
Weight
257 kg/m²: walled weight.
26.0 kg: block weight.
193 kg/m²: walled weight.
19.6 kg: block weight.
Moisture movement
0.6 mm/m.
0.6 mm/m.
Environmental Product Declaration (EPD)
ISO 14001.
ISO 14001.
R-Value
0.24 m² K/W.
0.16 m² K/W.
Sound reduction
51 dB (Rw).
48 dB (Rw).

Sustainability data

Contains Red List materials
No
No
Country of material origin
United Kingdom
United Kingdom
Country of product manufacture
United Kingdom
United Kingdom
Embodied carbon
12.8 kg CO₂ eq/m²
12.8 kg CO₂ eq/m²
Recyclability
100%
100%
Recycled content
20 %
20 %