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Analysis of the hydro-mechanical behavior of an unsaturated tropical soil

Grant number: 11/09031-0
Support Opportunities:Regular Research Grants
Duration: August 01, 2011 - January 31, 2014
Field of knowledge:Engineering - Civil Engineering - Geotechnical Engineering
Principal Investigator:Roger Augusto Rodrigues
Grantee:Roger Augusto Rodrigues
Host Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil


The aim of this research is to study the geotechnical behavior of a tropical soil, considering the unsaturated soil mechanics. Laboratory techniques will be developed and applied to study the influence of suction, as well as investigate collapse mechanism and suction cycles in the stress-strains behavior the a unsaturated tropical soil from Sao Paulo State, Brazil. Analytical methods will be applied through the Barcelona Basic Model (by Alonso et al., 1990), continuing with other elastoplastic models. For this, laboratory results will be obtained by oedometer and triaxial tests with suction control and in situ soil suction data will complete the study. Relationships between laboratory and field parameters will be obtained through the results, complementing other research (Proc. FAPESP: 2007/03451-2). The main aim of this research is not only to interpret the parameters and correlations but also to propose an expedite model and a method to identify collapsible soils. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BRENO PADOVEZI ROCHA; HERALDO LUIZ GIACHETI. Site characterization of a tropical soil by in situ tests. DYNA-COLOMBIA, v. 85, n. 206, p. 211-219, . (15/17260-0, 11/09031-0, 14/23767-8)
GIACHETI, HERALDO LUIZ; BEZERRA, RENAN CRAVERA; ROCHA, BRENO PADOVEZI; RODRIGUES, ROGER AUGUSTO. Seasonal influence on cone penetration test: An unsaturated soil site example. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING, v. 11, n. 2, p. 361-368, . (11/09031-0, 15/17260-0, 14/23767-8)
DOS SANTOS, ROBERTO A.; ROCHA, BRENO P.; GIACHETI, HERALDO L.. DMT for Load-Settlement Curve Prediction in a Tropical Sandy Soil Compared to Plate Load Tests. GEOTECHNICAL TESTING JOURNAL, v. 43, n. 1, p. 113-131, . (11/09031-0, 15/17260-0, 14/23767-8)

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