Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes

Detalhes bibliográficos
Autor(a) principal: Cristelo, Nuno
Data de Publicação: 2021
Outros Autores: Rivera, Jhonathan, Miranda, Tiago, Fernández-Jiménez, Ana
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/73691
Resumo: The development of alternative materials for the construction industry, based on different types of waste, is gaining significant importance in recent years. This is mostly due to the need to increase sustainability of this heavily polluting activity, thus mitigating the dependence on, for instance, Portland cement. The present paper is related to the development of an alkaline activated cement (AAC) exclusively fabricated from industrial by-products (both precursor and activator). Coal combustion fly ash, a common residue from thermoelectric powerplants, and glass waste, from the manufacture of ophthalmic lenses, were used as precursors. These precursors were activated with a recycled alkaline solution, resulting from the cleaning of aluminium extrusion dies, instead of the more common commercial reagents usually applied for this type of binder. Several pastes were studied, combining the precursor and alkaline solution in different proportions. When the most-performing cements were defined, they were used to stabilise a cohesive soil. The experimental procedure and subsequent analysis were designed based on a <i>Response Surface Methodology</i> model, considering the <i>Activator/Solids</i> and <i>Soil/Precursor</i> ratios as the most relevant variables of the stabilisation process. It was observed that, depending on the type of alkaline cement used, there was an optimum precursor and activator contents to optimise the mechanical properties of the stabilised soil. The reliability of this prediction was especially dependent on the type of precursors and, also, on their respective dissolution process right before the homogenization with the soil, under the working conditions available.
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spelling Stabilisation of a plastic soil with alkali activated cements developed from industrial wastesalkali activated cementssustainabilitysoil stabilisationfly ashglass wasteEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThe development of alternative materials for the construction industry, based on different types of waste, is gaining significant importance in recent years. This is mostly due to the need to increase sustainability of this heavily polluting activity, thus mitigating the dependence on, for instance, Portland cement. The present paper is related to the development of an alkaline activated cement (AAC) exclusively fabricated from industrial by-products (both precursor and activator). Coal combustion fly ash, a common residue from thermoelectric powerplants, and glass waste, from the manufacture of ophthalmic lenses, were used as precursors. These precursors were activated with a recycled alkaline solution, resulting from the cleaning of aluminium extrusion dies, instead of the more common commercial reagents usually applied for this type of binder. Several pastes were studied, combining the precursor and alkaline solution in different proportions. When the most-performing cements were defined, they were used to stabilise a cohesive soil. The experimental procedure and subsequent analysis were designed based on a <i>Response Surface Methodology</i> model, considering the <i>Activator/Solids</i> and <i>Soil/Precursor</i> ratios as the most relevant variables of the stabilisation process. It was observed that, depending on the type of alkaline cement used, there was an optimum precursor and activator contents to optimise the mechanical properties of the stabilised soil. The reliability of this prediction was especially dependent on the type of precursors and, also, on their respective dissolution process right before the homogenization with the soil, under the working conditions available.This work was funded by the R&D Project JUSTREST- Development of Alkali Binders for Geotechnical Applications Made Exclusively from Industrial Waste, with reference PTDC/ECM-GEO/0637/2014, financed by the Foundation for Science and Technology—FCT/MCTES (PIDDAC).Multidisciplinary Digital Publishing InstituteUniversidade do MinhoCristelo, NunoRivera, JhonathanMiranda, TiagoFernández-Jiménez, Ana2021-042021-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/73691engCristelo, N.; Rivera, J.; Miranda, T.; Fernández-Jiménez, A. Stabilisation of a Plastic Soil with Alkali Activated Cements Developed from Industrial Wastes. Sustainability 2021, 13, 4501. https://doi.org/10.3390/su130845012071-105010.3390/su13084501https://www.mdpi.com/2071-1050/13/8/4501info: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:RCAAP2023-07-21T12:53:23Zoai:repositorium.sdum.uminho.pt:1822/73691Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:52:44.167989Repositório 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 Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
title Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
spellingShingle Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
Cristelo, Nuno
alkali activated cements
sustainability
soil stabilisation
fly ash
glass waste
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
title_short Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
title_full Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
title_fullStr Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
title_full_unstemmed Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
title_sort Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
author Cristelo, Nuno
author_facet Cristelo, Nuno
Rivera, Jhonathan
Miranda, Tiago
Fernández-Jiménez, Ana
author_role author
author2 Rivera, Jhonathan
Miranda, Tiago
Fernández-Jiménez, Ana
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Cristelo, Nuno
Rivera, Jhonathan
Miranda, Tiago
Fernández-Jiménez, Ana
dc.subject.por.fl_str_mv alkali activated cements
sustainability
soil stabilisation
fly ash
glass waste
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
topic alkali activated cements
sustainability
soil stabilisation
fly ash
glass waste
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
description The development of alternative materials for the construction industry, based on different types of waste, is gaining significant importance in recent years. This is mostly due to the need to increase sustainability of this heavily polluting activity, thus mitigating the dependence on, for instance, Portland cement. The present paper is related to the development of an alkaline activated cement (AAC) exclusively fabricated from industrial by-products (both precursor and activator). Coal combustion fly ash, a common residue from thermoelectric powerplants, and glass waste, from the manufacture of ophthalmic lenses, were used as precursors. These precursors were activated with a recycled alkaline solution, resulting from the cleaning of aluminium extrusion dies, instead of the more common commercial reagents usually applied for this type of binder. Several pastes were studied, combining the precursor and alkaline solution in different proportions. When the most-performing cements were defined, they were used to stabilise a cohesive soil. The experimental procedure and subsequent analysis were designed based on a <i>Response Surface Methodology</i> model, considering the <i>Activator/Solids</i> and <i>Soil/Precursor</i> ratios as the most relevant variables of the stabilisation process. It was observed that, depending on the type of alkaline cement used, there was an optimum precursor and activator contents to optimise the mechanical properties of the stabilised soil. The reliability of this prediction was especially dependent on the type of precursors and, also, on their respective dissolution process right before the homogenization with the soil, under the working conditions available.
publishDate 2021
dc.date.none.fl_str_mv 2021-04
2021-04-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/73691
url http://hdl.handle.net/1822/73691
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Cristelo, N.; Rivera, J.; Miranda, T.; Fernández-Jiménez, A. Stabilisation of a Plastic Soil with Alkali Activated Cements Developed from Industrial Wastes. Sustainability 2021, 13, 4501. https://doi.org/10.3390/su13084501
2071-1050
10.3390/su13084501
https://www.mdpi.com/2071-1050/13/8/4501
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 Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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
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