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Stabilisation of Soft Clay, Quick Clay and Peat by Industrial By-Products and Biochars by Solve Hov; Priscilla Paniagua; Christian Sætre; Mike Long; Gerard Cornelissen; Stefan Ritter is a Engineering article available to read on EtoBox.

What is Stabilisation of Soft Clay, Quick Clay and Peat by Industrial By-Products and Biochars about?

The stabilisation of soft soils using the traditional binders cement and quicklime are known to emit large amounts of carbon dioxide. To reduce this carbon footprint, substitutes such as industrial by-products have been thoroughly tested as viable alternatives for soil stabilisation. However, recent research has also shown that biochar from biomass pyrolysis can in some instances have a positive stabilisation effect and even result in a carbon-negative footprint. This paper presents a laboratory study to investigate the stabilisation effect of five industrial by-products and four types of biochar on three natural Norwegian soils: two clays with low and high water contents and one peat with a very high water content. The soils and binders were characterised by their mineralogical and chemical compositions. The biochars had varying stabilisation effects on the clays when combined with cement, with some negative stabilisation effects, whilst the effect was very beneficial in the peat, with a strength increase of up to 80%. The industrial by-products showed opposite results, with beneficial effects in the clays and a strength increase of up to 150%, but negative stabilisation effects i

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Author

Solve Hov; Priscilla Paniagua; Christian Sætre; Mike Long; Gerard Cornelissen; Stefan Ritter

Publisher

MDPI AG

Published

2023

Language

EN

Field

Engineering (Physical Sciences)