Stabilisation of a plastic soil with alkali activated cements developed from industrial wastes
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
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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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 |
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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) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133120351436800 |