Soil Stabilisation Treatment of Brownfield Sites

Soil Stabilisation Treatment of Brownfield Sites

Soil stabilisation is a modern and efficient method of recycling and strengthening inert and contaminated soils and other construction based materials for the foundation to buildings and vehicle pavement.

Soil stabilisation is the generic term for a number of chemical-based soil condition improvement techniques; this usually involves the addition of proprietary dry binders; commonly used binders include hydrated quicklime and a variety of cement.

Common names to describe this group of soil stabilisation processes include Lime Stabilisation, Cement Stabilisation, Soil Improvement and Soil Modification.

Lime and cement stabilisation can be utilised to enhance the strength and stiffness characteristics of soils, and this form of stabilisation is recognised in the Specification for Highway Works Series 600 as a method of providing capping replacement layers.

The technique can be used to provide a cost-effective alternative to imported material, eg stone capping layers under hard standings and road pavement. The design strength can be varied to meet project specific requirements.

CBR values more than 15% are commonly achievable.

Advantages of lime and cement stabilisation:
• Reduction in the imported aggregate material.
• Reduced off-site disposal volume and associated costs of surplus excavated soils
• Environmental benefits associated with the reduction of disposal and import material
• Safety and cost benefits associated with fewer vehicle movements to and from site
• Better value project costs against other engineering solutions.

Nicholls Colton Group work closely with specialist contractors in this Sector providing UKAS Accredited pre-commencement classification of materials and operational in situ and laboratory tests.

Our experienced technical staff working closely with the contractor ensuring fast turnaround of results utilising our main geotechnical laboratory and where required, a site-based facility.