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| Shear behaviors of lignin stabilized silt based on the principle of energy conservation |
| ZHANG Tao1，2，LIU Songyu1，2，CAI Guojun1，2 |
| (1. Institute of Geotechnical Engineering，Southeast University，Nanjing，Jiangsu 210096，China；2. Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety，Southeast University，Nanjing，Jiangsu 210096，China) |
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Abstract To research the stress-strain behaviors of lignin stabilized silt during shearing process，the energy required to shear the stabilized soil during different stages was analyzed based on the energy conservation. A theoretical model was developed to depict the shear behaviors of stabilized soil，and the meaning and calculation method of parameters of the model were presented. The model was verified based on the laboratory testing results，and the limitations and applicability of the model were also discussed. The energy required to shear the stabilized soil with cementation is mainly made up of the energy required to break the inter-particle bonds，the energy required for a particle to roll and the energy required for a particle to slide. The cementation between particles，the shape of soil particles，the failure forms of shearing and other factors are considered in the proposed model. The proposed model depicts accurately the shear behaviors of stabilized soil from the direct shear tests on lignin treated silt.
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2016, Vol. 35 
