Heaveguard

Heaveguard is a compressible low density Expanded Polystyrene (EPS) product, used when foundations need to be protected against ground heave. As an integral part of the Cordek solution to ground heave, Heaveguard is used to protect against lateral heave, typically on the inside face of piled ground beams or deep trench fill foundations.

Features

  • Reduces the lateral force transmitted to the structure
  • BBA certified
  • Meets the NHBC’s Technical Standards
  • Wide range of sheets sizes and thicknesses to suit most applications
  • Available as a pile collar to aid installation of Cordek’s Cellcore range
  • Coloured green for easy identification on site

Applications

Heaveguard is used to protect against lateral heave, typically on the inside face of piled ground beams or deep trench fill foundations.

Suitability

The required thickness of Heaveguard is based upon the predicted lateral movement and recommended void guidance provided by the NHBC, as detailed in table one below. Note: Heaveguard and all other compressible polystyrenes do not compress significantly until loads exceed 20 kN/m2. A load of 40 kN/m2 is needed to produce 50% compression of the product. For this reason Heaveguard is not recommended for use under ground floor slabs, piled beams or pile caps.

Results of Soil AnalysisShrinkage PotentialPredicted lateral movement NHBC recommended void*Heaveguard thickness for 'Equivalent Void'
10-20LowZeroZero
20-40Medium25mm50mm
40-60High*35mm75mm

*If the shrinkage potential is more than High contact the Cordek Technical Team.



Downloads

Data Sheets

Product Issue Date Version Size Download
Heaveguard Data Sheet 08/2017 1 1.7 MB

Standard Details

MSDS Data Sheets

Product Issue Date Version Size Download
Expanded Polystyrene MSDS 08/2017 5 137.3 KB

Certification, Approval & Guidance

Product Issue Date Version Size Download
BBA Certificate - Heaveguard 08/2017 - 747.5 KB

Brochures

Product Issue Date Version Size Download
Ground Heave Solutions 08/2017 1 1,014.7 KB

NBS Clauses

Our NBS Clauses are hosted on the external website - view NBS Clauses

BIM Library

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