ISC7

Geotechnical Characterization of Dredged Material from Rio Grande’s Port, Brazil

  • Soares Ribeiro, Inacio (Federal University of Santa Catarina)
  • Nierwinski, Helena Paula (Federal University of Santa Catarina)
  • Freitas Fagundes, Diego (Federal University of Rio Grande)
  • Pinheiro Maria, Regis (Federal University of Rio Grande)

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Dredging works are essential to ensure navigability in Harbors and waterways. However, this crucial activity generates millions of tonnes of waste each year worldwide. Since the disposal of dredged material is responsible for several environmental impacts, entrepreneurs and engineers must find creative uses for it. Studies conducted by Loudini et al. (2020) and Bhairappanavar et al. (2021) demonstrate that this soil-like material can be successfully applied in geotechnical works. Therefore, this study aims to characterize a local dredged material to assess its properties and suitability for geotechnical applications. With this knowledge, this paper presents a series of experimental tests on clayey sand dredged material samples retrieved from Rio Grande's Port, Brazil. The experimental program includes determining Atterberg limits, sieve and sedimentation analysis, XRD and SEM analysis, compaction curve, and unconfined compressive strength in a reconstituted state.