Verified by manufacturer 6 months ago
Dense concrete blocks.
Typical locations include:
For walls that are to be directly decorated, Paint Grade blocks should be specified.
Lignacrete dense concrete blocks are robust and durable with a technical performance that will fulfil most applications. They are manufactured to BS EN 771-3 and are available in standard and paint grade (close textured for direct painting). High strength blocks up to 30N/mm² are available for demanding, loadbearing designs.
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 | E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork F10/355 Concrete common 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 | 7.3 N/mm². |
Category | M4. |
Thermal conductivity | 1.33 W/m·K at 3% moisture content; 1.43 W/m·K at 5% moisture content.Guidance for specification option: Internal/external use. |
Thermal resistance | 0.075 m²K/W at 3% moisture content; 0.069 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 | 2000 kg/m³. |
Reaction to fire | Class A1. |
Moisture movement | <0.6mm/m. |
Weighted sound reduction index, Rw | Plasterboard on dabs: 49 dB; Plaster finish: 51 dB; Paint finish: 48 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 3 hours; loadbearing wall (criteria RE1): 2 hours. |
Third-party certification | BSI Kitemark approved KM 09694. |
Unit weight | 5.8 kg. |
Air tightness | No finish: 2.73 m³/hr/m²; Paint one side: 0.88 m³/hr/m². |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.1 kg CO₂ eq/kg Self declared |
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