Site characterization of a tropical soil by in situ tests

Author(s)

Breno Padovezi Rocha ^[1] ; Heraldo Luiz Giacheti ^[2]

Affiliation

^[1] University of São Paulo. Department of Geotechnical Engineering - Brasil

^[2] São Paulo State University. Department of Civil and Environmental Engineering - Brasil

• Document type: Journal article
• Source: DYNA-COLOMBIA; v. 85, n. 206, p. 211-219, 2018-09-00.

Abstract

Abstract This paper compiles site characterization data of an unsaturated tropical soil profile in an experimental research site in Bauru, São Paulo State, Brazil. Several in situ campaigns comprised geophysical borehole tests (cross-hole, down-hole and up-hole together with the SPT), as well as mechanical tests (SPT, CPT and SDMT) have been performed. According to the MCT Classification System for tropical soils, the first 13 m depth is a colluvium with lateritic soil behavior (LA’) over the residual soil with non-lateritic behavior (NA’). The ratio between seismic ( Go ) and mechanical ( qn, N60, ED, KD and MDMT ) parameters was useful to identify the presence of microstructure and to confirm unusual soil behavior for this tropical soil site. CPT and SDMT were efficient for detailed stratigraphic logging, however, the estimative of geotechnical parameters cannot be solely been done base on just conventional correlations defined for sedimentary soil. (AU)

• FAPESP's process: 11/09031-0 - Analysis of the hydro-mechanical behavior of an unsaturated tropical soil
• Grantee: Roger Augusto Rodrigues
• Support Opportunities: Regular Research Grants
• FAPESP's process: 14/23767-8 - CPT data interpretation considering the influence of the unsaturated soil condition
• Grantee: Renan Craveiro Bezerra
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 15/17260-0 - Seismic DMT for site characterization of tropical soils
• Grantee: Heraldo Luiz Giacheti
• Support Opportunities: Regular Research Grants