Britpave: The British In-Situ Concrete Paving Association

New definitive guide to soil improvement and stabilisation

7th November 2017


A new introductory and technical guide to mix-in-place soil improvement and stabilisation has been published by Britpave, the cementitious infrastructure industry association. The new guide outlines industry best practice and provides technical information plus signposts to industry standards and further reading.

‘Soil Improvement and Soil Stabilisation: A Definitive Guide’ explains the what, why, where and how of soil stabilisation. It concentrates on the use of binders to improve and stabilise clays and fine-grained soils. The common binders discussed are lime, cement and ground granulated blast furnace slag (ggbs). Fly ash is covered even though it is less commonly used and the UK supply is set to decline as UK coal-fired power stations are being decommissioned. The use of foamed bitumen as a binder for coarse-grained soils and aggregates is a niche technique and is not included. Unlike Advice Note HA/74/07, this guide seeks to describe the process of soil stabilisation for all infrastructure sectors not just highway works and slope repairs.

“As one member of the Britpave working group behind the new guide said, ‘this is the type of guide that I wish was available when I first started out in the industry,’” explained Al McDermid, Chairman of the Britpave Soil Stabilisation Task Group and Operations Manager of Beach Ground Engineering. “This guide has been developed by industry working in collaboration with Highways England. It seeks to demystify the magic and explain the science of soil stabilisation.”

To download a copy of ‘Soil Improvement and Soil Stabilisation: A Definitive Guide’ visit the publication section at