A theoretical and experimental study on the behaviour of lignosulfonate-treated sandy silt |
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| Institution: | 1. Centre for Geomechanics and Railway Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong City, NSW 2522, Australia;2. ARC Centre of Excellence for Geotechnical Science and Engineering, Faculty of Engineering and Built Environment, University of Newcastle, Callaghan, NSW 2308, Australia;1. ISISE, Department of Civil Engineering, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;2. CIEPQPF, Department of Civil Engineering, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;3. Department of Civil Engineering, University of Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;1. ARC Smart Pavements Hub, Department of Civil Engineering, Monash University, Victoria 3800, Australia;2. Geomechanics Group, Department of Civil Engineering, Monash University, Victoria 3800, Australia;3. Department of Civil Engineering, RMIT University, Melbourne, VIC 3001, Australia;1. Computational Geomechanics Group, Department of Engineering, University of Exeter, United Kingdom;2. LEMTA – UMR 7563 CNRS, Laboratoire d’Energétique et de Mécanique Théorique et Appliquée, Université de Lorraine, France;1. Norwegian University of Science and Technology, Department of Civil and Environmental Engineering, Høgskoleringen 7A, Trondheim 7491, Trøndelag, Norway;2. Norwegian University of Science and Technology, Department of Geosciences and Petroleum, Sem Sæalandsvei 1, Trondheim 7491, Trøndelag, Norway |
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| Abstract: | The effectiveness of an environmentally friendly stabilising agent for soil, namely, lignosulfonate was examined through a series of laboratory tests. A simple bounding surface plasticity model was developed to capture the bonding effects induced by lignosulfonate. One of the appealing aspects of the model is that it can incorporate the mechanical behaviour of the bonded soil during shearing, including the brittle and ductile failure modes. Validity of the model was verified by experimental results of lignosulfonate-treated soils under different stress path conditions. The mechanical behaviour of chemically treated soil was adequately captured by the model. |
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| Keywords: | Elasto-plastic modelling Lignosulfonate Shear strength Deformation Triaxial tests |
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