Characterization flowchart for assessing the potential reuse of excavation soils in Sao Paulo city

Autor(es)

Kataguiri, Karen ^[1] ; Boscov, Maria Eugenia G. ^[1] ; Teixeira, Claudia E. ^[2] ; Angulo, Sergio C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Politecn, Av Prof Almeida Prado, Travessa II, 83, BR-0550070 Sao Paulo - Brazil

^[2] Inst Pesquisas Tecnol, Av Prof Almeida Prado 532, BR-0550070 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CLEANER PRODUCTION; v. 240, DEC 10 2019.
• Citações Web of Science: 0

Resumo

Waste management solutions and reuse strategies for excavation soils from construction works are needed to increase the circularity of resources in urban areas. In this study, we assessed some reuse strategies for excavated soils, based on a geotechnical-environmental characterization study conducted with samples from an ``inert{''} construction and demolition waste (CDW) landfill in Sao Paulo city. The geotechnical reuse of soil samples should be limited to applications where the material is confined (backfilling trenches, containing walls etc.), because of swelling and loss of bearing capacity after saturation. In addition, CDW-soil mixtures can be used in reinforcement of subgrades and sub-bases of pavements of low-volume roads. Gypsum/cementitious materials in contact with the leakage of sanitary effluents might result in sulfate concentrations that restrict the reuse of CDW due to quality requirements of superficial waters, however, without posing a significant risk to human health. They might also degrade neighboring concrete foundations. A methodological flowchart to support reuse strategies of soils for urban areas was proposed, based on current characterization tests. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/50948-3 - INCT 2014: tecnologias ecoeficientes avançadas em produtos cimentícios
• Beneficiário: Vanderley Moacyr John
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/20420-2 - Resistência dos Agregados: controle e análise de efeitos no comportamento mecânico dos concretos
• Beneficiário: Sérgio Cirelli Angulo
• Modalidade de apoio: Auxílio à Pesquisa - Regular