Verified by manufacturer 7 months ago
Medium density concrete blocks.
Typical locations include:
Ash GP medium density concrete blocks are robust and durable, making them a suitable choice for walls built above and below ground. Manufactured to BS EN 771-3, their textured faces provide a surface for mortars, renders and plasters. They also provide a strong base for holding fixings.
Ash GP blocks contain a proportion of recycled materials, and their sustainability performance has been verified through an Environmental Performance Declaration (EPD).
Features and benefits:
Mortar:
Generally, the mortar type for work above ground level should be designation (iii) / Compressive Class M4. Stronger mixes may be required if blocks are used below ground. Consult manufacturer for details.
Movement:
Vertical movement joints should be considered in accordance with masonry design codes and the recommendations of Published Document PD 6697, at 6.0 — 7.0 metre spacings. In areas of increased stress, such as above and below openings in external walls, the blockwork may need to be reinforced to restrain movement.
Design:
The design of walls should be in accordance with relevant design standards including BS 8103-2, BS EN 1996-1-1 and the requirements of the Building Regulations.
Color | Grey |
Finish | Textured |
Material | Concrete |
Shape | Rectangle |
Length | 440 mm |
Width | 100 mm |
Height | 215 mm |
Uniclass | |
CAWS | F10/355 Concrete common blockwork E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork |
Product range |
Standard | To BS EN 771-3, BS EN 9001. |
Block description | Coursing blocks. |
Appearance | Medium grey in colour with a fine textured surface. |
Configuration | Group 1. |
Compressive strength | |
Mean value | 10.4 N/mm². |
Category | M4. |
Thermal conductivity | 0.47 W/m·K at 3% moisture content; 0.51 W/m·K at 5% moisture content.Guidance for specification option: Internal/external use. |
Thermal resistance | 0.212 m²K/W at 3% moisture content; 0.196 m²K/W at 5% moisture content. |
Work sizes (length x width x height) | 440 x 100 x 215 mm. |
Tolerance category | D1. |
Density | |
Net dry density | 1450 kg/m³. |
Reaction to fire | Class A1. |
Moisture movement | <0.5mm/m. |
Weighted sound reduction index, Rw | Plasterboard on dabs: 44 dB; Plaster finish: 45 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 2 hours; loadbearing wall (criteria RE1): 3 hours. Guidance for specification option: See manufacturer's literature for further examples. |
Third-party certification | BSI Kitemark approved KM 09694. |
Unit weight | 4.2 kg. |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.17 kg CO₂ eq/kg Self declared |
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