NBS Source
I'm a manufacturer

MIDI Concrete Block

Verified by manufacturer 11 days ago

Thomas Armstrong (Concrete Blocks) Ltd Third party certifications:
  • BES 6001

    BES 6001

    Certificate type

  • ISO 14001 Environmental Management Systems

    Certificate type

  • ISO 9001 Quality Management

    Certificate type

Solid concrete block.

Jump to:
+44 (0)1207 544214 Website

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.

Description

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.

General information

Color

Grey

Finish

Textured

Material

Concrete

Shape

Rectangle

Length

290 mm

300 mm

Width

140 mm

Height

215 mm

Warranty description

Lifetime

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

Specification data - Aggregate concrete blocks

Standard

To BS EN 771-3.

Block description

Standard common block.

Appearance

Dark grey.

Configuration

Group 1.

Compressive strength

-

Mean value

Available as standard, higher strengths are available to order.

7.3 N/mm².

10.4 N/mm².

Characteristic value

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

Specifier to detail.

1850-2100 kg/m³.

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).

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

12.8 kg CO₂ eq/m²

12.8 kgCO2e/m².

Recyclability

100%

Recycled content

20 %

Third party certifications

BES 6001

BES 6001

BES 6001 Responsible Sourcing - aggregate blocks

ISO 14001 Environmental Management Systems

ISO 14001 Environmental Management Systems

ISO 14001:2015 Environmental Management

ISO 9001 Quality Management

ISO 9001 Quality Management

ISO 9001:2015 Quality Management

Literature

Concrete Blocks Brochure

Concrete Blocks Brochure

MIDI Dense Concrete Block Datasheet

MIDI Dense Concrete Block Datasheet

U-Value Tables

U-Value Tables

Similar products from Thomas Armstrong (Concrete Blocks) Ltd

Armstart Concrete Block

Armstart Concrete Block

Cellular Dense Concrete Block

Cellular Dense Concrete Block

Dense Paint-Grade Concrete Block

Dense Paint-Grade Concrete Block

Hollow Dense Concrete Block

Hollow Dense Concrete Block

Insulite Premier Paint Grade Block

Insulite Premier Paint Grade Block

Insulite Standard Concrete Block

Insulite Standard Concrete Block

Solid Dense Concrete Block

Solid Dense Concrete Block

Ultralite Concrete Block

Ultralite Concrete Block