Effect of saline water on the strength behavior of beach sand from northeastern Brazil coastline

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Publication Title
Effect of saline water on the strength behavior of beach sand from northeastern Brazil coastline

Abstract
This study addresses the effect of saline water on the strength of Pacheco Beach sand, located on the northeast coast of Brazil. Although several studies in the literature deal with the influence of saline water on the behavior of soils in coastal areas, information regarding the behavior of Brazilian coastal sands is scarce, justifying the need for this current research. The study is particularly important for maritime works, such as foundations for offshore wind towers in new exploration potential areas like the northeast coast of Brazil. For this purpose, two samples were collected and subjected to characterization tests and direct shear tests at normal stresses of 50, 100, and 200 kPa. The specimens were saturated with distilled water and saline water for the loose state. The results demonstrate that the presence of salts in water significantly influences the shear strength of sands, as well as the values of friction angles, indicating alterations in the mechanical properties of these soils. In direct shear tests, saturating a sample in saline water resulted in a 6% increase in friction angles compared to samples saturated in distilled water.
Authors
G. F. Azevedo; A. S. Moura; F. C. S. Filho; R. F. Leme; D. R. L. Goncalves; R. P. Cunha

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

E - Environment, water and energy

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