Some observations on the design and construction of wet soil mixing in the UK

Published in the Proceedings of the XVII ECSMGE 2019 – download

Mass soil mixing and deep soil mix columns are a versatile ground improvement technology for marginal and brownfield sites. Dry soil mixing is relatively common in the UK for improvement of ground with very wet and/or organic material. Wet mixing is less commonplace and involves introduction of a fluid grout with simultaneous disaggregation of the soil with a rotating mixing tool. This paper presents the results of strength verification testing carried out across multiple projects in the UK covering differing soil types with varying project specification criteria. Some conclusions are drawn with regards to the factors affecting strength progression and in understanding the mechanics of the mixing process. Mixing time per unit volume of mixed material is identified as an important parameter for mass mixing. In addition, discrete element modelling has shown promise in understanding the mechanics of deep column mixing.

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Some observations on the design and construction of wet soil mixing in the UK

Published in the Proceedings of the XVII ECSMGE 2019 – download

Mass soil mixing and deep soil mix columns are a versatile ground improvement technology for marginal and brownfield sites. Dry soil mixing is relatively common in the UK for improvement of ground with very wet and/or organic material. Wet mixing is less commonplace and involves introduction of a fluid grout with simultaneous disaggregation of the soil with a rotating mixing tool. This paper presents the results of strength verification testing carried out across multiple projects in the UK covering differing soil types with varying project specification criteria. Some conclusions are drawn with regards to the factors affecting strength progression and in understanding the mechanics of the mixing process. Mixing time per unit volume of mixed material is identified as an important parameter for mass mixing. In addition, discrete element modelling has shown promise in understanding the mechanics of deep column mixing.

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Related geotechnical research

Some observations on the design and construction of wet soil mixing in the UK

Published in the Proceedings of the XVII ECSMGE 2019 – download

Mass soil mixing and deep soil mix columns are a versatile ground improvement technology for marginal and brownfield sites. Dry soil mixing is relatively common in the UK for improvement of ground with very wet and/or organic material. Wet mixing is less commonplace and involves introduction of a fluid grout with simultaneous disaggregation of the soil with a rotating mixing tool. This paper presents the results of strength verification testing carried out across multiple projects in the UK covering differing soil types with varying project specification criteria. Some conclusions are drawn with regards to the factors affecting strength progression and in understanding the mechanics of the mixing process. Mixing time per unit volume of mixed material is identified as an important parameter for mass mixing. In addition, discrete element modelling has shown promise in understanding the mechanics of deep column mixing.

Related Tags

Related geotechnical research