Changes of energy potential on clay particle surfaces at high pressures
| Autor: | G.A. Isaeva, A. V. Rastegaev, T. Yu. Parshina, V. V. Seredin, V. I. Galkin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
020101 civil engineering Geology 02 engineering and technology 01 natural sciences 0201 civil engineering Full width at half maximum chemistry.chemical_compound Montmorillonite chemistry Geochemistry and Petrology 0103 physical sciences Bentonite Particle Kaolinite Crystallite Composite material 010306 general physics Clay minerals Intensity (heat transfer) |
| Zdroj: | Applied Clay Science. 155:8-14 |
| ISSN: | 0169-1317 |
| Popis: | Bentonite and kaolin were treated by high pressure (to 2200 MPa). Using the XRD parameters (full width at half maximum, integrated intensity, interplanar distance, diffraction angle 2θ of reflection maximum), a significant pressure effect on the crystallite size of main clay minerals (montmorillonite and kaolinite) was established. The crystallite size is closely related to the energy activity of the clay particles. The boundaries with a pressure of 125 and 750 MPa were identified, which divide the measurements into three classes. Each class has its own regularities for changing parameters. Mathematical models for predicting changes in energy activity of clay particles have been developed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect