Highways England has appointed geopolymer specialist Uretek to treat voided soils as part of the on-going maintenance works following completion of the M3 smart motorway between junctions 2 and 4a.
The contract involves remediating voids in the ground around existing pipes from ground level using Uretek’s geopolymer technique.
The ground will be treated with two rows of injections – one either side of the pipe – and treatment depths will vary from 1.35m to 2.6m below ground level.
The contract, on behalf of Balfour Beatty Infrastructure Services, is being undertaken over night to minimise disruption, and will see some 102 linear metres of soil treated over a period of four weeks.
Uretek managing director Richard Holmes said: “Not only will we stabilise the soils, but we fill the expansive voiding surrounding sub-surface service lines, meaning future surface maintenance won’t be compromised. The recyclable nature of the geopolymer being used is not only safe for the environment, but is safe for removal, should access to the void be required in the future.”