Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate

Detalhes bibliográficos
Autor(a) principal: Almeida, R.
Data de Publicação: 2014
Outros Autores: Roque, A. J., Silva, A. P.
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://columba.lnec.pt:8080/jspui/handle/123456789/1006663
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1008057
Resumo: Laboratório Nacional de Engenharia Civil (National Laboratory for Civil Engineering), in partnership with Faculdade de Ciencias e Tecnologia da Universidade Nova de Lisboa (Faculty of Sciences and Technology, NOVA University of Lisbon), have studied the technical feasibility of applying two recycled aggregates, one processed from electrical arc furnace steel slag and the other from concrete of construction and demolition waste (CDW), in the construction of the leachate collection and removal layer (LCRL) of municipal solid waste (MSW) landfills. In the paper is presented and discussed the hydraulic behaviour of these materials based on results obtained in permeability tests carried out on specimens prepared from grain-size in the ranges 0.25-2.0mm and 2.0-20.0mm, given that, in Portugal, the LCRL is composed by an upper layer of 0.2m thickness constructed with particles in the range of sand and a lower layer of 0.3m thickness constructed with particles in the range of fine gravel. Aiming to test their hydraulic behaviour to more aggressive conditions than those observed in MSW landfills, the leachate used in permeability tests, which was collected at a Portuguese MSW landfill, was acidified with hydrochloric acid to decrease the initial pH from 8.2 to 5.5. As a reference for the results obtained with the recycled materials in contact with the leachate, the same permeability tests were performed with tap water. In general, the hydraulic conductivity of tested materials was higher than the minimum (1x10-4m/s) required by Portuguese decree-law in force. Therefore, the results obtained suggest the possibility of applying both recycled aggregates in the construction of the LCRL of landfills.
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spelling Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachatesteel slagconstruction and demolition wasterecycled aggregateshydraulic conductivitydrainage layerlandfillLaboratório Nacional de Engenharia Civil (National Laboratory for Civil Engineering), in partnership with Faculdade de Ciencias e Tecnologia da Universidade Nova de Lisboa (Faculty of Sciences and Technology, NOVA University of Lisbon), have studied the technical feasibility of applying two recycled aggregates, one processed from electrical arc furnace steel slag and the other from concrete of construction and demolition waste (CDW), in the construction of the leachate collection and removal layer (LCRL) of municipal solid waste (MSW) landfills. In the paper is presented and discussed the hydraulic behaviour of these materials based on results obtained in permeability tests carried out on specimens prepared from grain-size in the ranges 0.25-2.0mm and 2.0-20.0mm, given that, in Portugal, the LCRL is composed by an upper layer of 0.2m thickness constructed with particles in the range of sand and a lower layer of 0.3m thickness constructed with particles in the range of fine gravel. Aiming to test their hydraulic behaviour to more aggressive conditions than those observed in MSW landfills, the leachate used in permeability tests, which was collected at a Portuguese MSW landfill, was acidified with hydrochloric acid to decrease the initial pH from 8.2 to 5.5. As a reference for the results obtained with the recycled materials in contact with the leachate, the same permeability tests were performed with tap water. In general, the hydraulic conductivity of tested materials was higher than the minimum (1x10-4m/s) required by Portuguese decree-law in force. Therefore, the results obtained suggest the possibility of applying both recycled aggregates in the construction of the LCRL of landfills.Engineers Australia (EA)2015-01-05T10:11:14Z2016-03-08T18:02:08Z2017-04-13T10:13:23Z2014-11-01T00:00:00Z2014-11conference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://columba.lnec.pt:8080/jspui/handle/123456789/1006663http://repositorio.lnec.pt:8080/jspui/handle/123456789/1008057eng978-1-922107-23-7Almeida, R.Roque, A. J.Silva, A. P.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-09-28T03:04:46Zoai:localhost:123456789/1008057Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-09-28T03:04:46Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
title Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
spellingShingle Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
Almeida, R.
steel slag
construction and demolition waste
recycled aggregates
hydraulic conductivity
drainage layer
landfill
title_short Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
title_full Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
title_fullStr Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
title_full_unstemmed Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
title_sort Study of the Hydraulic Behavior of Steel Slag and CDW Recycled Aggregates to MSW Landfill Leachate
author Almeida, R.
author_facet Almeida, R.
Roque, A. J.
Silva, A. P.
author_role author
author2 Roque, A. J.
Silva, A. P.
author2_role author
author
dc.contributor.author.fl_str_mv Almeida, R.
Roque, A. J.
Silva, A. P.
dc.subject.por.fl_str_mv steel slag
construction and demolition waste
recycled aggregates
hydraulic conductivity
drainage layer
landfill
topic steel slag
construction and demolition waste
recycled aggregates
hydraulic conductivity
drainage layer
landfill
description Laboratório Nacional de Engenharia Civil (National Laboratory for Civil Engineering), in partnership with Faculdade de Ciencias e Tecnologia da Universidade Nova de Lisboa (Faculty of Sciences and Technology, NOVA University of Lisbon), have studied the technical feasibility of applying two recycled aggregates, one processed from electrical arc furnace steel slag and the other from concrete of construction and demolition waste (CDW), in the construction of the leachate collection and removal layer (LCRL) of municipal solid waste (MSW) landfills. In the paper is presented and discussed the hydraulic behaviour of these materials based on results obtained in permeability tests carried out on specimens prepared from grain-size in the ranges 0.25-2.0mm and 2.0-20.0mm, given that, in Portugal, the LCRL is composed by an upper layer of 0.2m thickness constructed with particles in the range of sand and a lower layer of 0.3m thickness constructed with particles in the range of fine gravel. Aiming to test their hydraulic behaviour to more aggressive conditions than those observed in MSW landfills, the leachate used in permeability tests, which was collected at a Portuguese MSW landfill, was acidified with hydrochloric acid to decrease the initial pH from 8.2 to 5.5. As a reference for the results obtained with the recycled materials in contact with the leachate, the same permeability tests were performed with tap water. In general, the hydraulic conductivity of tested materials was higher than the minimum (1x10-4m/s) required by Portuguese decree-law in force. Therefore, the results obtained suggest the possibility of applying both recycled aggregates in the construction of the LCRL of landfills.
publishDate 2014
dc.date.none.fl_str_mv 2014-11-01T00:00:00Z
2014-11
2015-01-05T10:11:14Z
2016-03-08T18:02:08Z
2017-04-13T10:13:23Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://columba.lnec.pt:8080/jspui/handle/123456789/1006663
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1008057
url http://columba.lnec.pt:8080/jspui/handle/123456789/1006663
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1008057
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 978-1-922107-23-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Engineers Australia (EA)
publisher.none.fl_str_mv Engineers Australia (EA)
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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