Parex Fine Bedding Concrete (FBC)

Portland cement and special polymers and plasticisers

6 months

Bagged Parex Fine Bedding Concrete (FBC) will have a shelf life of 6 months when kept in dry conditions at a temperature of +5°C to +35°C. Storage at higher temperatures or high humidity may reduce the shelf life.
Bulk bags should be used as soon as possible after delivery. Bags not to be used immediately should be stored on pallets and under cover.

~2,000 kg/m³

Parex Fine Bedding Concrete (FBC) is part of the Parex / Sika Streetscape System complying with the relevant parts of BS 7533 and comprising of:

Bedding Mortar:

Parex Fine Bedding Concrete (FBC)

Priming Scrub Coat:

Parex Bond Plus Mortar

Pointing / Jointing Mortar:

Parex Granatech

Parex Granatech 40 Fine
 

Note: Typical mortar values at 20°C. 

*Attained with Parex Bond Plus Mortar after 28 days. 

Note: The tensile adhesion / bond strength achieved is a function of the mortar used and the porosity / surface texture of the paving units. For vehicular trafficked areas, the inclusion of a scrub coat of Parex Bond Plus Mortar is essential.

Note: Results follow the material being lightly tamped for compaction through application.

30 mm minimum / 75 mm maximum (40 mm is typically used for most applications)

+5°C minimum / +35°C maximum

The water requirement is 8 to 9% (or 2.0 to 2.25 litres of water) per 25 kg bag.

+5°C minimum / +35°C maximum

~45 minutes at 20°C

Each 25 kg bag will yield approximately 13.5 litres of mixed material.

Each 1,000 kg bulk bag will yield approximately 540 litres of mixed product. 

Contact surfaces must be sound, clean and provide a good mechanical key. Remove any loose material, laitance, plaster, paint and oily deposits.

Mixing of bagged Parex Fine Bedding Concrete (FBC) requires a forced action mixer such as a Creteangle or Rojo. Pour the recommended amount of clean water into a suitable mixing vessel. Gradually add the powder and mix thoroughly until a homogeneous product is achieved. Once mixed, apply within the pot life. Additional water should not be added to 'revive' the product past its pot life.

Apply the mixed Parex Fine Bedding Concrete (FBC) to the primed substrate before the priming coat has dried (i.e. 'wet-on-wet'). Compact the Parex Fine Bedding Concrete (FBC) to ensure good contact with the underlying primed surface. It is advisable to dip setts / cubes in water to clean them prior to priming. Prime the back / underside of the paving units being used and place the units onto the wet Parex Fine Bedding Concrete (FBC) and adjust the levels as required. Always ensure that the Parex Fine Bedding Concrete (FBC) layer is fully compacted.
Application thickness of the Parex Fine Bedding Concrete (FBC) should be in the range of 30 mm to 75 mm (40 mm is typical for most applications). In situations where thick layers are required to be built up, the surface of the lower layer should be left with a wood float finish and should be scored. Subsequent Parex Bond Plus Mortar and Parex Fine Bedding Concrete (FBC) layers may be applied as soon as the initial layer is firm enough not to distort under the new work.

In temperate ambient conditions, no special curing is required. In severe drying conditions of high temperatures and high wind, the paved surface should be sprayed with water to assist with temperature control of the paving surface and provide water for additional curing of the Parex Fine Bedding Concrete (FBC).

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.