Influence of Water Treatment Sludge Addition on the Compressibility and Shear Strength Parameters of Two Lateritic Soils

Autor(es)

Montalvan, Edy L. T. ; Ferreira, Kemmylle S. M. ; Godoy, Rafaela V. S. ; Boscov, Maria E. G. ; LopezAcosta, NP ; MartinezHernandez, E ; EspinosaSantiago, AL ; MendozaPromotor, JA ; Lopez, AO

• Tipo de documento: Artigo Científico
• Fonte: GEOTECHNICAL ENGINEERING IN THE XXI CENTURY: LESSONS LEARNED AND FUTURE CHALLENGES; v. N/A, p. 9-pg., 2019-01-01.

Resumo

This article analyzes the influence of the addition of water treatment sludge (WTS) on the compressibility and shear strength parameters of two Brazilian lateritic soils (a clayey sand and a clay) in order to enable the waste reuse at geotechnical works. The lateritic soils, the WTS and the mixtures were geotechnically characterized and subjected to compaction, one-dimensional consolidation and undrained triaxial compression tests. WTS addition altered the compaction parameters of the soils by decreasing the maximum dry unit weight and increasing the optimum water content. The mixtures presented higher values of compression indexes than the soils, and correlations are presented relating compression index to WTS content. The effective cohesion decreased with WTS addition and the effective friction angle increased. Nevertheless, some the obtained values for compressibility and shear strength parameters can still be allowable for earthworks, depending on the structure requirements. (AU)

• Processo FAPESP: 13/50448-8 - Viabilização da utilização do lodo de ETA como material de cobertura de aterros sanitários e na construção de aterros em solos compactados
• Beneficiário: Maria Eugenia Gimenez Boscov
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE
• Processo FAPESP: 17/24056-6 - Comportamento geotécnico de misturas de solos tropicais paulistas com lodo de estação de tratamento de água
• Beneficiário: Edy Lenin Tejeda Montalvan
• Modalidade de apoio: Bolsas no Brasil - Doutorado