What is VelociFoam?
VelociFoam is a method of replacing standard aggregate- or concrete-based backfill systems for buried pipelines and cables, with various combinations of sprayed and poured polyurethane foam, and native soils, where possible.
We patented the technology in late 2015, with a full global roll-out underway in all strategically important territories over the last 3 years.
The technology has been independently, academically verified and validated by NTNU (Trondheim Technical University in Norway), with stunning results that show that VelociFoam performs 3 to 7 times better than aggregate in uniaxial geotechnical applications, and can replace concrete thrust blocks in most scenarios*.
Many pipeline and installation projects face the challenge of stabilising buried systems using non-native materials, such as graded aggregates that require compaction, or poured concrete that is environmentally unfriendly.
VelociFoam solves the problem of expensive backfill by encasing the buried system in sprayed or poured polyurethane foam, which allows backfilling using native excavated soils. This has two important advantages: it avoids the need for import of backfill material, which is often expensive and time-consuming, not to mention environmentally unfriendly, and it avoids the need to dispose of the excavated spoil.
* Example scenario: A 35″ or 900mm unrestrained GRP 30° pipe bend, encased in 300mm of standard PU foam, with 30BAR of pressure and 2.5m/s flow, will experience less than 13mm of displacement in the ‘z’ direction and a maximum of 3.26mm in the ‘x’ direction, at the pipe couplers.
Disclaimer: installation follows all VelociFoam requirements.