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A platform for research: civil engineering, architecture and urbanism
Chemical Clay Soils Treatment During Deep Soil Mixing
Deep Soil Mixing (DSM) is adopted in various applications to improve the mechanical and hydraulic properties of different soil types, granular, plastic or organic. In plastic soils, the disaggregation of particles and the mixing with cement is often inhibited with the result that lumps of untreated soil remain entrapped in the aggregate and homogeneity and mechanical properties of the columns are flawed. The paper presents the results of an experimental study aimed at testing the applicability of a chemical additive to improve the workability, homogeneity and mechanical performance of cement stabilized clays. The present study shows the results of an experimental program testing the effectiveness of an additive traditionally used for tunneling purposes, that reduces adhesion and clogging of clayey particles. Experiments particularly addressed to quantify the performance in DSM application, are performed on two reference materials, a kaolinite and a smectite, mixed with different dosages of water, cement and additive. The variation of the mechanical properties induced by the additive is herein analyzed performing Atterberg limits, rheological, unconfined compressive (UCS) and oedometer tests.
Chemical Clay Soils Treatment During Deep Soil Mixing
Deep Soil Mixing (DSM) is adopted in various applications to improve the mechanical and hydraulic properties of different soil types, granular, plastic or organic. In plastic soils, the disaggregation of particles and the mixing with cement is often inhibited with the result that lumps of untreated soil remain entrapped in the aggregate and homogeneity and mechanical properties of the columns are flawed. The paper presents the results of an experimental study aimed at testing the applicability of a chemical additive to improve the workability, homogeneity and mechanical performance of cement stabilized clays. The present study shows the results of an experimental program testing the effectiveness of an additive traditionally used for tunneling purposes, that reduces adhesion and clogging of clayey particles. Experiments particularly addressed to quantify the performance in DSM application, are performed on two reference materials, a kaolinite and a smectite, mixed with different dosages of water, cement and additive. The variation of the mechanical properties induced by the additive is herein analyzed performing Atterberg limits, rheological, unconfined compressive (UCS) and oedometer tests.
Chemical Clay Soils Treatment During Deep Soil Mixing
Lecture Notes in Civil Engineering
Barla, Marco (editor) / Di Donna, Alice (editor) / Sterpi, Donatella (editor) / Insana, Alessandra (editor) / Spagnoli, Giovanni (author) / Salvatore, Erminio (author) / Arciero, Michela (author) / Modoni, Giuseppe (author)
International Conference of the International Association for Computer Methods and Advances in Geomechanics ; 2022 ; Turin, Italy
2022-07-31
8 pages
Article/Chapter (Book)
Electronic Resource
English
Chemical Clay Soils Treatment During Deep Soil Mixing
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