Abstract
Three soil profiles in Ilha Solteira, Brazil were investigated to establish their potential for collapsible behavior. The soil profiles were identified using terrain evaluation techniques and simple laboratory tests. Geophysical surveys were undertaken as they are quick and relatively cheap. The results were correlated with trial pit descriptions and cone and standard penetration tests. The study has shown that electrical resistivity is a useful tool for the preliminary identification of horizons of collapsible soils, before more expensive intrusive and laboratory work is undertaken.
Résumé
Trois profils de sols ont été étudiés à Ilha Solteira (Brésil) afin d’évaluer leur aptitude à l’effondrement. Les profils ont été identifiés à partir de techniques d’évaluation de terrain et d’essais de laboratoire simples. Des reconnaissances géophysiques ont été mises en œuvre car elles sont rapides et relativement peu onéreuses. Les résultats ont été corrélés avec des descriptions de fosses d’essai et des essais pénétrométriques. L’étude a montré que la résistivité électrique est un outil utile pour une identification préliminaire des horizons de sols susceptibles de s’effondrer, avant d’entreprendre des travaux par forage et essais de laboratoire plus chers.
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Acknowledgments
The authors would like to express their gratitude to Fapesp (Fundação de Amparo a Pesquisa do Estado de São Paulo) who supported the project with financial resources.
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de Lollo, J.A., Rodrigues, R.A., Elis, V.R. et al. Use of electrical resistivity to identify collapsible soils in Brazil. Bull Eng Geol Environ 70, 299–307 (2011). https://doi.org/10.1007/s10064-011-0357-8
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DOI: https://doi.org/10.1007/s10064-011-0357-8