Título:	Influence of variables related to soil weathering on the geomechanical performance of tropical soils
Autor(es):	Pierozan, Rodrigo Cesar Araújo, Gregório Luís Silva Palmeira, Ennio Marques Romanel, Celso
ORCID:	https://orcid.org/0000-0002-2585-0840 https://orcid.org/0000-0003-4524-8846 https://orcid.org/0000-0003-2620-0708 https://orcid.org/0000-0002-8812-3456
Afiliação do autor:	Federal Institute of Education, Science, and Technology of Rondonia, Department of Civil Engineering University of Brasilia, Department of Civil and Environmental Engineering University of Brasilia, Department of Civil and Environmental Engineering Pontifical Catholic University of Rio de Janeiro, Department of Civil and Environmental Engineering
Assunto:	Solos tropicais Solos lateríticos Intemperismo Mecânica dos solos
Data de publicação:	29-Ago-2023
Editora:	Elsevier B.V.
Referência:	PIEROZAN, Rodrigo Cesar; ARAÚJO, Gregório Luís Silva; PALMEIRA, Ennio Marques; ROMANEL, Celso. Influence of variables related to soil weathering on the geomechanical performance of tropical soils. Journal of Rock Mechanics and Geotechnical Engineering, [S.l.], v. 15, n. 9, p. 2423-2440, 2023. DOI: https://doi.org/10.1016/j.jrmge.2023.04.005. Disponível em: https://www.sciencedirect.com/science/article/pii/S1674775523001361?via%3Dihub. Acesso em: 10 jul. 2025.
Abstract:	This paper presents an experimental and analytical investigation of the influence of variables related to soil weathering on the geomechanical performance of sand-silt mixtures containing lateritic soils, i.e. intensely weathered tropical soils with the influence of interparticle bonding. The sand-silt mixtures containing different relative proportions between uniform sand and lateritic soil were produced, and geomechanical soil characterization tests were performed. Based on the results, a transition from a primarily coarse-to a fine-grained prevailing soil structure was found to cause considerable impact on the geomechanical performance of these soils, as evidenced by design variables related to soil mineralogy and size distribution characteristics. Specifically, fines contents of both individual soil particles and soil aggregations were found to correlate with experimental results, while the relative proportion between sesquioxides (aluminum, and iron oxides), and silica, i.e. sesquioxide-silica ratios (SSR−1), facilitated estimates concerning changes in geomechanical performance. Finally, the application of the sand-silt mixtures containing lateritic soil on soil walls reinforced with polymeric strips was also evaluated, further emphasizing the potential advantages of adopting variables related to soil weathering on design guidelines concerning tropical soils.
Unidade Acadêmica:	Faculdade de Tecnologia (FT) Departamento de Engenharia Civil e Ambiental (FT ENC)
Programa de pós-graduação:	Programa de Pós-Graduação em Geotecnia
Licença:	This is an open access article under the CC BY NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
DOI:	https://doi.org/10.1016/j.jrmge.2023.04.005
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