Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience
This paper presents the first laboratory study of four materials (three lateritic soils and one sandy soil) mainly used in road construction in French Guiana. The analysis of macroscopic behaviour by physical tests, following French standards, made it possible to classify and group the samples with...
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MDPI AG
2023-07-01
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| author | Ouahcène Nait-Rabah Flavio Germain Yannick Estevez James Guiraud Gildas Medjigbodo Daniel Dias Chadi Maalouf |
| author_facet | Ouahcène Nait-Rabah Flavio Germain Yannick Estevez James Guiraud Gildas Medjigbodo Daniel Dias Chadi Maalouf |
| author_sort | Ouahcène Nait-Rabah |
| collection | DOAJ |
| description | This paper presents the first laboratory study of four materials (three lateritic soils and one sandy soil) mainly used in road construction in French Guiana. The analysis of macroscopic behaviour by physical tests, following French standards, made it possible to classify and group the samples with respect to the rules specified in the Guide des Terrassements Routiers (GTR). According to the GTR, these raw materials could only be used as backfill materials and under very specific hydric conditions. Chemical and mineralogical characterisation by the X-ray fluorescence analysis, scanning electron microscopy observation supplemented by the X-ray microanalysis, and the infrared analysis revealed differences in the main minerals. Indeed, the presence of mineral species such as kaolinite and gibbsite and oxides such as goethite and hematite was detected. The macroscopic and microscopic characteristics of the four soils made it possible to establish a relationship between their geotechnical and mineralogical properties. Finally, the results of this study led to the conclusion that the mineralogical composition and geotechnical properties of lateritic soils must be known simultaneously to allow correct identification for their application in road construction. |
| first_indexed | 2024-03-11T01:46:17Z |
| format | Article |
| id | doaj.art-92d845c23f904ca1bb24d3303a507fea |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:46:17Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-92d845c23f904ca1bb24d3303a507fea2023-11-18T16:13:43ZengMDPI AGApplied Sciences2076-34172023-07-011313794310.3390/app13137943Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana ExperienceOuahcène Nait-Rabah0Flavio Germain1Yannick Estevez2James Guiraud3Gildas Medjigbodo4Daniel Dias5Chadi Maalouf6UMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles), Université de Guyane, 97310 Kourou, FranceUMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles), Université de Guyane, 97310 Kourou, FranceCNRS, UMR EcoFoG (AgroParisTech, CIRAD, INRAE, Université des Antilles, Université de Guyane), 97310 Kourou, FranceDépartement des Sciences de la Terre et de l’Atmosphère, Université du Québec à Montréal, C.P. 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, CanadaUMR EcoFoG (AgroParisTech, CNRS, CIRAD, INRAE, Université des Antilles), Université de Guyane, 97310 Kourou, FranceAntea Group, 92160 Antony, FranceMATériaux et Ingénierie Mécanique (MATIM), Université de Reims Champagne-Ardenne, 51100 Reims, FranceThis paper presents the first laboratory study of four materials (three lateritic soils and one sandy soil) mainly used in road construction in French Guiana. The analysis of macroscopic behaviour by physical tests, following French standards, made it possible to classify and group the samples with respect to the rules specified in the Guide des Terrassements Routiers (GTR). According to the GTR, these raw materials could only be used as backfill materials and under very specific hydric conditions. Chemical and mineralogical characterisation by the X-ray fluorescence analysis, scanning electron microscopy observation supplemented by the X-ray microanalysis, and the infrared analysis revealed differences in the main minerals. Indeed, the presence of mineral species such as kaolinite and gibbsite and oxides such as goethite and hematite was detected. The macroscopic and microscopic characteristics of the four soils made it possible to establish a relationship between their geotechnical and mineralogical properties. Finally, the results of this study led to the conclusion that the mineralogical composition and geotechnical properties of lateritic soils must be known simultaneously to allow correct identification for their application in road construction.https://www.mdpi.com/2076-3417/13/13/7943Guyanelateritetropical soilgeotechnical propertiescompressive strength |
| spellingShingle | Ouahcène Nait-Rabah Flavio Germain Yannick Estevez James Guiraud Gildas Medjigbodo Daniel Dias Chadi Maalouf Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience Applied Sciences Guyane laterite tropical soil geotechnical properties compressive strength |
| title | Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience |
| title_full | Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience |
| title_fullStr | Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience |
| title_full_unstemmed | Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience |
| title_short | Characterisation of Geotechnical Properties of Residual Tropical Soils Used for Road Infrastructure: French Guiana Experience |
| title_sort | characterisation of geotechnical properties of residual tropical soils used for road infrastructure french guiana experience |
| topic | Guyane laterite tropical soil geotechnical properties compressive strength |
| url | https://www.mdpi.com/2076-3417/13/13/7943 |
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