Engineering properties of Norwegian peat for calculation of settlements

Long, Michael; Paniagua, Priscilla; Grimstad, Gustav; Trafford, Andrew; Degago, Samson Abate; L’Heureux, Jean-Sébastien

doi:10.1016/j.enggeo.2022.106799

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…The peat was sampled from a depth of 1-1.5 m at the NGTS site at Tiller-Flotten [41,42]. The peat had a w of approximately 800-1000% and a ρ b close to 1.0 t/m 3 .…”

Section: Natural Soilsmentioning

confidence: 99%

“…This paper presents results from a laboratory study where five different IBPs and four different biochars were used to stabilise three soft Norwegian soils: a soft, low-sensitive clay from Onsøy [40], located in southern Norway; a quick clay; and a peat, both from Tiller-Flotten [41,42], located in mid-Norway. All binders and soils were characterised by their composition and mineralogy, and the potential for soil stabilisation was investigated by strength and stiffness testing.…”

Section: Introductionmentioning

confidence: 99%

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Stabilisation of Soft Clay, Quick Clay and Peat by Industrial By-Products and Biochars

et al. 2023

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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 in the peat. Correlating the mineralogical and chemical compositions to stabilisation effects was found to be challenging.

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“…The peat was sampled from a depth of 1-1.5 m at the NGTS site at Tiller-Flotten [41,42]. The peat had a w of approximately 800-1000% and a ρ b close to 1.0 t/m 3 .…”

Section: Natural Soilsmentioning

confidence: 99%