Spatial Microstructural Ordering of Expansive Clay Minerals
The volumetric change within soils containing expanding clays depends upon their spatial ordering and their mineralogy. So this work studies the spatial microstructural ordering and mineralogy of different expanding clays in order to correlate them with some of their geotechnical properties (plastic...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9217365 |
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| author | T. López-Lara J. B. Hernández-Zaragoza D. Carreón-Freyre M. Cerca E. Rojas-González A. G. Minor Franco G. Martínez-Barrera R. Salgado-Delgado |
| author_facet | T. López-Lara J. B. Hernández-Zaragoza D. Carreón-Freyre M. Cerca E. Rojas-González A. G. Minor Franco G. Martínez-Barrera R. Salgado-Delgado |
| author_sort | T. López-Lara |
| collection | DOAJ |
| description | The volumetric change within soils containing expanding clays depends upon their spatial ordering and their mineralogy. So this work studies the spatial microstructural ordering and mineralogy of different expanding clays in order to correlate them with some of their geotechnical properties (plasticity, classification, and expansion). The clay microstructure was obtained using X-ray diffraction, and sweeping electronic microscopy. Physical characterization includes pH analysis. Clays with greater swelling (12.1–14.6% expansion) present greater agglomeration (gathering) (20–50 microns) in a flocculated structure that mainly contained sodic montmorillonite with 14–22 Å openings and 8.28 average pH, which indicates high electron concentrations with border-face interactions. Clays with the least expansion (7.6%) present lower agglomerations (5–10 microns) with face-to-face contacts within a dispersed structure that mainly contained calcium montmorillonite with openings lower than 15 Å and pH 7.56, which indicates a low electron concentration and face-to-face interaction. Major clay expansion corresponds to a greater size agglomerates, greater opening between particles, and greater pH presenting border-face and face-to-face interactions of a flocculent structure. Yet, the soils with lower expansion only present face-to-face interactions corresponding to a dispersed structure. |
| format | Article |
| id | doaj-art-92f946860c43465b9bf8fa2406491071 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-92f946860c43465b9bf8fa24064910712025-02-03T01:10:10ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/92173659217365Spatial Microstructural Ordering of Expansive Clay MineralsT. López-Lara0J. B. Hernández-Zaragoza1D. Carreón-Freyre2M. Cerca3E. Rojas-González4A. G. Minor Franco5G. Martínez-Barrera6R. Salgado-Delgado7División de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Col. Las Campanas, 76010 Santiago de Querétaro, QRO, MexicoDivisión de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Col. Las Campanas, 76010 Santiago de Querétaro, QRO, MexicoLaboratorio de Mecánica Multiescalar de Geosistemas, Centro de Geociencias, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Col. Juriquilla, 76230 Querétaro de Arteaga, QRO, MexicoLaboratorio de Mecánica Multiescalar de Geosistemas, Centro de Geociencias, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Col. Juriquilla, 76230 Querétaro de Arteaga, QRO, MexicoDivisión de Estudios de Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas S/N, Col. Las Campanas, 76010 Santiago de Querétaro, QRO, MexicoFacultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, Avenida Universidad y Fidel Velázquez, Ciudad Universitaria, 66450 San Nicolás de los Garza, NL, MexicoLaboratorio de Investigación y Desarrollo de Materiales Avanzados (LIDMA), Facultad de Química, Universidad Autónoma del Estado de México, Km 12 de la carretera Toluca-Atlacomulco, San Cayetano 50200, MICH, MexicoDivisión de Estudios de Posgrado e Investigación, Instituto Tecnológico de Zacatepec, Calzada Tecnológico No. 27, Col. Centro, 62780 Zacatepec, MOR, MexicoThe volumetric change within soils containing expanding clays depends upon their spatial ordering and their mineralogy. So this work studies the spatial microstructural ordering and mineralogy of different expanding clays in order to correlate them with some of their geotechnical properties (plasticity, classification, and expansion). The clay microstructure was obtained using X-ray diffraction, and sweeping electronic microscopy. Physical characterization includes pH analysis. Clays with greater swelling (12.1–14.6% expansion) present greater agglomeration (gathering) (20–50 microns) in a flocculated structure that mainly contained sodic montmorillonite with 14–22 Å openings and 8.28 average pH, which indicates high electron concentrations with border-face interactions. Clays with the least expansion (7.6%) present lower agglomerations (5–10 microns) with face-to-face contacts within a dispersed structure that mainly contained calcium montmorillonite with openings lower than 15 Å and pH 7.56, which indicates a low electron concentration and face-to-face interaction. Major clay expansion corresponds to a greater size agglomerates, greater opening between particles, and greater pH presenting border-face and face-to-face interactions of a flocculent structure. Yet, the soils with lower expansion only present face-to-face interactions corresponding to a dispersed structure.http://dx.doi.org/10.1155/2018/9217365 |
| spellingShingle | T. López-Lara J. B. Hernández-Zaragoza D. Carreón-Freyre M. Cerca E. Rojas-González A. G. Minor Franco G. Martínez-Barrera R. Salgado-Delgado Spatial Microstructural Ordering of Expansive Clay Minerals Advances in Civil Engineering |
| title | Spatial Microstructural Ordering of Expansive Clay Minerals |
| title_full | Spatial Microstructural Ordering of Expansive Clay Minerals |
| title_fullStr | Spatial Microstructural Ordering of Expansive Clay Minerals |
| title_full_unstemmed | Spatial Microstructural Ordering of Expansive Clay Minerals |
| title_short | Spatial Microstructural Ordering of Expansive Clay Minerals |
| title_sort | spatial microstructural ordering of expansive clay minerals |
| url | http://dx.doi.org/10.1155/2018/9217365 |
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