Aarsleff
Aarsleff Ground Engineering is a leading ground engineering specialist, focusing on multi-discipline excellence and value engineering.
- Date
- 09 January 2024
- Time
This event has now ended
Overview
The performance requirements for HS2 embankments necessitate a stiff fill material with a minimum shear wave velocity of 160m/s durable to environmental conditions for a 120 year design life. However much of the natural ground along the HS2 route yields cohesive fills which soften on wetting and can’t meet this requirement.
As a sustainable alternative to importing over 10 million m3 of quarried granular fill for phase 1 of the project alone, lime stabilisation is being used to improve the site won material to the required stiffness.
This talk showcases highlights from an innovative programme of HS2 funded research and development delivered with collaboration between industry and academia which justified a 40% reduction to lime dosage. The programme delivered increased understanding of sulphate swell risks and enabled cold weather working.
Speakers
Dr Paul Beetham
Nottingham Trent University
Associate professor in geotechnics
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Dr Paul Beetham
Paul is a chartered civil engineer with 27 years’ experience in the construction industry. He is currently associate professor in Geotechnical Engineering at Nottingham Trent University, where he undertakes substantial consultancy and research in ground improvement, including a focus on soil stabilisation.
Seb Wayles
Balfour Beatty Vinci
graduate materials engineer
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Seb Wayles
Seb is a graduate materials engineer at Balfour Beatty Vinci having spent 2 years post-graduation on the HS2 scheme, with a focus on site earthworks and soil stabilisation trials for the N1 / N2 sublots.
Sustainable Development Goals:
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