Britpave: The British In-Situ Concrete Paving Association

Success for Soil Stabilisation Seminar

In December over 100 delegates attended a half-day seminar on Soil Stabilisation held at the Institution of Civil Engineers. The event, entitled ‘Recycle and Remediate with Lime and Cement – the Zero Landfill Option’ was sponsored by the Concrete Centre in conjunction with Britpave and the British Lime Association.

Ably chaired by Steve Biczysko of Atkins, topics included an introduction to stabilisation techniques by Hedley Greaves of Buxton Lime. This was followed by a case history of the Commonwealth Games Stadium, Manchester, presented by Geofirma’s Jonathan Smith. Ian Walsh of Babtie then gave a paper on the stabilisation of road foundations, followed by Steve Biczysko in his role of presenter as well as Chairman, who provided a session on recycling roads using stabilisation techniques.

After coffee, the audience heard from Wyn Lloyd of Highways Agency on the New Versatile Road Design. The morning concluded with Mike Southall of Castle Cement giving a presentation of stabilisation and solidification of brown land. Soil stabilisation/solidification, a technique well known to Britpave members, is a civil engineering based remediation technique in which problem soil is mixed with cementitous materials in order to improve its engineering properties and immobilise the contaminants. The dual action means that the technique is suitable for land of poor engineering properties and also land affected by contamination, and is noted for its cost effectiveness.

The advantages of treating the soil on site were made clear at the seminar:

  • Swift redevelopment of problem sites protecting greenfield sites.
  • A reduction in the volume of soil dumped in landfill sites.
  • Elimination of the lorry journeys taking contaminated soil to landfill sites and importing new soil.
  • The EU Landfill Directive 1999, now incorporated into domestic legislation, requires a major change in current UK landfill practices and brings the use of technologies such as S/S to the forefront of best practice; that’s why the Environment Agency is a strong supporter of the technique.

As Mike Southall said, ‘The increasing costs and constraints of using landfill and growing knowledge of S/S, the longevity and durability of the process, the mechanisms that allow it to work and predictive methods for the long-term performance of treated waste means that in the future solidification and stabilisation will become a mainstream technique within the UK’.

The success of the event was such that two further seminars are planned for 2005. The first is to be held in Manchester on 12 May and the second in Falkirk.

For more information contact the Concrete Centre on 0800 4 500 500.