Geotechnical Applications

Geotechnical uses

  • As a lightweight filling material (substrate in loose soil)
  • Road construction, port projects, airport projects, playing fields

LAVA pumice stone's natural, chemical and mechanical properties make it an ideal lightweight filling material for a variety of geotechnical applications.

LAVA pumice stone features:

  • Low density.
    Its bulk density is below 750 Kg/m3 (on dry ground), which is beneficial because:
    • It mitigates the development of loads and lateral stresses
    • Transportation cost is less and handling easier
    • Protection against extreme temperature variations is ensured, thanks to its very good thermal-insulating properties
  • Large angle of internal friction.
    Pumice stone grains have an angular shape allowing stronger cohesion among them, which in turn enhances considerably the structure's stability.
  • A satisfactory deformation modulus and very good compaction behaviour.
  • Full grain size distribution, which, coupled with the large internal friction angle, increases slope retention minimizing the need for geotextiles.
  • Pozzolanic properties.

LAVA pumice stone is chemically inert, non-corrosive and resistant to deformation.

LAVA pumice stone's excellent qualities make it an ideal lightweight filling material in numerous geotechnical applications both in the US and Europe: road construction, port projects, bridges, playing fields, airports, etc.

LAVA pumice stone proves to be a particularly attractive material providing solutions to difficult earthfills, backfills and embankments. Its role is particularly important when it comes to soft or loose soils that require lower loads and subsidence control.

The House ABCD+

The ABCD+ House, designed by French builder Cecile Robin and using Lafarge materials, was inaugurated in 2012 in Roanne (France).

This positive-energy detached concrete house, the result of a close partnership with building firm Cecile Robin Construction, is inspired by the PRO-eco initiative set up by Lafarge in France to make sustainable construction simpler for building professionals.

Combining traditional techniques and innovative materials such as pumice-stone concrete block, the house meets the requirements of 2020 Thermal Regulation as of today. It also offers an urban, architectural and environmental answer to the new challenges of the sustainable city. The house was awarded the golden medal in the "Urban Challenge" category for the House of the Year 2012 classification by French Houses Union.

Follow our guided tour around this new concept for detached aesthetic and affordable positive energy house made from concrete.

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