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MIDI Concrete Block

Name: MIDI Concrete Block
Brand: Thomas Armstrong (Concrete Blocks) Ltd
SKU: wynPBd4pzyZ2u4hNn5rgvA

Verified by manufacturer 3 months ago

Third party certifications:

Solid concrete block.

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Application

Suitable for use in the following:

Walls below DPC.
Internal partition walls.
Inner and outer leaf of external cavity walls over three storeys.
Acoustic separating party walls to Building Regulations (E&W) Approved Document E and Robust Details.
Provides an excellent surface for mortars, renders and plasters.

MIDI blocks offer the same characteristics of a 140 mm dense concrete block but at only 66% of the weight.

Features and benefits:

Manufactured to BS EN 771-3.
Manufactured from Class 2 aggregates.
Consist of up to 20% recycled raw material.
Standard texture finish provides an excellent surface for mortars, renders and plasters.

Uniclass	Pr_20_93_52_01 Aggregate concrete blocksPrimary
CAWS	F10/18 Concrete facing blockwork F10/255 Concrete facing blockwork F10/355 Concrete common blockwork F10/36 Concrete common blockwork

Standard	To BS EN 771-3.
Block description	Standard common block.
Appearance	Dark grey.
Configuration	Group 1.
Compressive strength	-
Mean value	7.3 N/mm². 10.4 N/mm². Manufacturer guidance Available as standard, higher strengths are available to order.
Characteristic value	- Manufacturer guidance 5.5-10.1 N/mm². Depending on size. Specifier to detail.
Category	II.
Freeze/ thaw resistance	Frost resistant.
Thermal conductivity	1.17 W/mK (protected inner leaf). 1.26 W/mK (exposed outer leaf).
Recycled content	20%.
Work sizes (length x width x height)	290 x 215 x 140 mm.
Tolerance category	D1.
Density	-
Gross dry density	1850-2100 kg/m³. Manufacturer guidance Specifier to detail.
Reaction to fire	Class A1 to BS EN 13501-1.
Water absorption by capillarity	90 g/(m2x xs-0.5).
Water vapour permeability	5/15 µ.

R-Value	0.12 m² K/W.
Weight	266 kg/m²: walled weight. 16.6 kg: block weight.
Sound reduction	51 dB (Rw).

Contains Red List materials	No
Country of material origin	United Kingdom
Country of product manufacture	United Kingdom
Material	Concrete
Embodied carbon A1-A3 (production stage) as defined in BS EN 15804	12.8 kg CO₂ eq/m² Self declared Guidance for specification option: 12.8 kgCO2e/m².
Recyclability	100%
Recycled content As defined in clause 7.8 of BS EN ISO 14021	20 %
Expected Life	Lifetime