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Celcon’s new FloorBlock has a face size of 610mm x 350mm (rather than 440mm x 560mm) offering the ability to span widths of 610mm allowing fewer beams to be used in each floor.
Manufactured to a compressive strength of 3.5N/mm2, the new FloorBlock is produced using the very latest aircrete manufacturing technology at our plant in Pollington.
The blocks are 610 x 350 x 100mm thick and can be laid in either the 610mm or 350mm dimension or cut to the required opening, making them the ideal infill for beam and block flooring systems.
With their inherent thermal properties, these blocks provide a significant contribution to energy conservation. The Elemental Method outlined in Approved Document ‘L’ in support of the National Building Regulations requires a maximum U-value of 0.25W/m2K for ground floors.
Site Practice
After installation the FloorBlocks must first be grouted prior to any trafficking, loading or the application of screed. A 1:4 mix cement/sharp sand (by volume) should be used for the grout, with sufficient water to allow it to be brushed well into the joints between the FloorBlocks and the beams.
The floor should not be overloaded during construction, with planks laid across the beams for short term storage of lightweight materials. Any stacks should be placed as close as possible to the floor supporting walls.
Technical Data
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Average density (kg/m3)
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600
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Compressive strength (N/mm2)
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3.5 (3.6*)
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Thermal conductivity (W/m K)
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0.15
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Vapour resistivity
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60MN s/gm
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Co-efficient of linear expansion
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8x10-6/K
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Specific heat capacity
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1.05kJ/kg K
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Vapour diffusion resistance factor
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12
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BBA Certificate No
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90/2467
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Face size (mm)
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610 x 350
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Thickness (mm)
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100
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Block weight (kg)†
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16.2
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* When referencing the European Standard BS EN 771-4: 2003 the compressive strength values in brackets should be used.
†Weight is at typical block moisture content when laid. Some manufacturers may quote weights which have not allowed for this.
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Ground floor P/A (perimeter/area)
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0.6
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0.5
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0.45
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Foundations (see notes below)
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Aggregate
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Celcon
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Aggregate
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Celcon
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Aggregate
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Celcon
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Added Insulation required (mm)
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Thermal conductivity (λ) = 0.023
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60
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50
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55
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45
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55
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45
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Thermal conductivity (λ) =
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75
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60
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70
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55
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70
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55
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Notes:
Aggregate = a lightweight aggregate concrete block (1400 kg/m3) both as infill for the beam and block flooring and in the foundations
Celcon = Celcon’s FloorBlock (610 x 350mm) as infill (610mm span) for the beam and block flooring and Celcon Foundation blocks below DPC (min 2 courses)
Pack Information
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T = Block thickness (mm)
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100
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1200
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1200
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No. of blocks per pack
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36
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m2 per pack (depending on floor beams)
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9.0 (approx)
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Pack weight (excluing pallet) (kg)
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583
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