A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Compressive behavior of kaolinitic clay under chemo-mechanical loadings
https://orcid.org/http://orcid.org/0000-0002-7259-9652
A series of laboratory experiments, including sedimentation, liquid limit, SEM and oedometer tests, was performed to explore the influence of chemo-mechanical loadings on the compression behavior of kaolinitic clay. The results indicate that the concentration and valence of pore solution have significant effect on the volume change of kaolinitic clay. The volume change can be attributed to the change of intergranular forces caused by the variation of pore water chemistry. It is observed that the recompression curves under mechanical loading after solution replacement at various vertical stresses merge into a single curve. In addition, the salinization-induced volumetric strain under the same vertical stress is independent of the step number of salinization, provided that the total change of ionic strength is the same. A recently developed formulation of intergranular stresses, which accounts for the physicochemical interactions between the solid matrix and the pore solution, is introduced to interpret the experimental results. It is shown that the compression behaviors of kaolinitic clay under complex chemical and mechanical loadings can be remarkably unified by a single intergranular stress, showing the capability of the intergranular stress in describing the chemo-mechanical behavior of kaolinitic clay.
Compressive behavior of kaolinitic clay under chemo-mechanical loadings
https://orcid.org/http://orcid.org/0000-0002-7259-9652
A series of laboratory experiments, including sedimentation, liquid limit, SEM and oedometer tests, was performed to explore the influence of chemo-mechanical loadings on the compression behavior of kaolinitic clay. The results indicate that the concentration and valence of pore solution have significant effect on the volume change of kaolinitic clay. The volume change can be attributed to the change of intergranular forces caused by the variation of pore water chemistry. It is observed that the recompression curves under mechanical loading after solution replacement at various vertical stresses merge into a single curve. In addition, the salinization-induced volumetric strain under the same vertical stress is independent of the step number of salinization, provided that the total change of ionic strength is the same. A recently developed formulation of intergranular stresses, which accounts for the physicochemical interactions between the solid matrix and the pore solution, is introduced to interpret the experimental results. It is shown that the compression behaviors of kaolinitic clay under complex chemical and mechanical loadings can be remarkably unified by a single intergranular stress, showing the capability of the intergranular stress in describing the chemo-mechanical behavior of kaolinitic clay.
Compressive behavior of kaolinitic clay under chemo-mechanical loadings
https://orcid.org/http://orcid.org/0000-0002-7259-9652
A series of laboratory experiments, including sedimentation, liquid limit, SEM and oedometer tests, was performed to explore the influence of chemo-mechanical loadings on the compression behavior of kaolinitic clay. The results indicate that the concentration and valence of pore solution have significant effect on the volume change of kaolinitic clay. The volume change can be attributed to the change of intergranular forces caused by the variation of pore water chemistry. It is observed that the recompression curves under mechanical loading after solution replacement at various vertical stresses merge into a single curve. In addition, the salinization-induced volumetric strain under the same vertical stress is independent of the step number of salinization, provided that the total change of ionic strength is the same. A recently developed formulation of intergranular stresses, which accounts for the physicochemical interactions between the solid matrix and the pore solution, is introduced to interpret the experimental results. It is shown that the compression behaviors of kaolinitic clay under complex chemical and mechanical loadings can be remarkably unified by a single intergranular stress, showing the capability of the intergranular stress in describing the chemo-mechanical behavior of kaolinitic clay.
Compressive behavior of kaolinitic clay under chemo-mechanical loadings
Acta Geotech.
Yang, Dehuan (author) / Yan, Rongtao (author) / Ma, Tiantian (author) / Wei, Changfu (author)
Acta Geotechnica ; 18 ; 77-94
2023-01-01
18 pages
Article (Journal)
Electronic Resource
English
Chemo-mechanical loadings , Compression behavior , Intergranular stress , Kaolinitic clay Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
Characterization of alkali activated kaolinitic clay
| Elsevier | 2013
Characterization of alkali activated kaolinitic clay
| Online Contents | 2013
Bearing Capacity of Kaolinitic Clay Reinforced with Geosynthetics
| British Library Conference Proceedings | 1990
Compressibility of Kaolinitic Clay Contaminated by Ethanol-Gasoline Blends
| British Library Online Contents | 2011
A Sardinian Kaolinitic Clay for Different Uses in Ceramics
| British Library Conference Proceedings | 1995