Innovative Stabilisation
Soil stabilisation using cement or lime binder to recycle soil

Cognition Land and Water push the boundaries of thinking to create increasingly innovative project solutions, thereby improving outcome for our clients.

Major development projects, by their very nature, involve significant investment. They require solutions that are cost-effective, efficient, sustainable and delivered in an environment in which risks are managed.

Stabilisation is the improvement of a soil through the addition of a binder or additive.  The use of stabilisation means that a wider range of soils can be improved for construction purposes – Cognition Land and Water have pioneered the design and construction of stabilised pile mats, recovery of contaminated soils and infrastructure applications.

The advantages of using in-situ stabilisation techniques to upgrade or recycle existing materials include cost savings of between 30 and 50%, faster rehabilitation, maximisation of available materials. There is also the added benefit of reduced traffic, noise and dust pollution.

Compared to alternatives, in-situ stabilisation also saves on landfill space as excavated materials are reused and therefore do not require disposal. Ultimately, this minimises the quarrying of replacement materials, which are finite resources.

We have successfully applied this technique on over 100 projects of various sizes, resulting in considerable cost and programme savings – on one major project in London this resulted in the client saving more than £10million and saved some 100,000 lorry movements.

All our projects are bespoke - we expertly consider the unique requirements of every project and deliver a comprehensive design and performance specification whether for a stabilised pile mat, soil treatment, soil recovery or pavement application.

Every one of our Soil Stabilisation machines uses an integrated system, whereby the lime or cement powder is fed through a sealed hopper and the soil is blended with the binder in a confined mixing drum. The percentage of the binder additive is computer controlled which makes sure the spread rate of powder is gauged by the speed of the drum. This ensures that the correct volume of binder is used, with virtually no dust emissions into the atmosphere. All powder is stored on site in sealed silos and the binder is pumped via compressed air into the machine.

On the completion of stabilisation works we always provide a fully audited validation report.