THE UNIVERSITY of Greenwich has begun work on a set of codes and standards for stabilisation and solidification technology (CASSST). The aim is to provide a guidance document for best practice for design, selection and implementation of stabilisation/ solidification techniques.
While the methods are used extensively in the US and mainland Europe, it is uncommon in the UK, mainly because of a lack of understanding of the science.There is also a lack of reliable information on the long-term durability.
'The information will provide simple authoritative guidance for consultants and engineers involved in contaminated land remediation, ' says University of Greenwich principal investigator on CASST, Dr Colin Hills.
The steering committee is made up of representatives from cement and lime manufacturers, stabilisation contractors, environmental consultants, academia and the Environment Agency.The team believes that this balance should result in a document that meets with the practical demands of the industry and satisfies the Environment Agency.
Consultant Weeks Group is contributing from its extensive experience in the use of soil stabilisation, in particular the design and implementation of appropriate geoenvironmental investigations and laboratory testing regimes to obtain design parameters. Research into the changing parameters of the treated material following the addition of cement and/or lime will also be provided.
'The US reaps the benefits of this cheap and effective treatment for contaminated land. I believe that with the issue of the CASSST guidelines, the UK will be able to follow suit, 'says project worker Dr Hilary Jones.