Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime

Detalhes bibliográficos
Autor(a) principal: Secco, Marina Paula
Data de Publicação: 2021
Outros Autores: Mesavilla, Débora Thaís, Floss, Márcio Felipe, Consoli, Nilo Cesar, Miranda, Tiago F. S., Cristelo, Nuno
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/76672
Resumo: The increasingly strong search for alternative materials to Portland cement has resulted in the development of alkali-activated cements (AAC) that are very effective at using industrial by-products as raw materials, which also contributes to the volume reduction in landfilled waste. Several studies targeting the development of AAC—based on wastes containing silicon and calcium—for chemical stabilization of soils have demonstrated their excellent performance in terms of durability and mechanical performance. However, most of these studies are confined to a laboratory characterization, ignoring the influence and viability of the in situ construction process and, also important, of the in situ curing conditions. The present work investigated the field application of an AAC based on carbide lime and glass wastes to stabilize fine sand acting as a superficial foundation. The assessment was supported on the unconfined compressive strength (UCS) and initial shear modulus (G<sub>0</sub>) of the developed material, and the field results were compared with those prepared in the laboratory, up to 120 days curing. In situ tests were also developed on the field layers (with diameters of 450 and 900 mm and thickness of 300 mm) after different curing times. To establish a reference, the mentioned precursors were either activated with a sodium hydroxide solution or hydrated with water (given the reactivity of the lime). The results showed that the AAC-based mixtures developed greater strength and stiffness at a faster rate than the water-based mixtures. Specimens cured under controlled laboratory conditions showed better results than the samples collected in the field. The inclusion of the stabilized layers clearly increased the load-bearing capacity of the natural soil, while the different diameters produced different failure mechanisms, similar to those found in Portland cement stabilization.
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spelling Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide limeGeotechnical engineeringGround improvementAlkali-activated cementsRecycling and reuse of materialsScience & TechnologyThe increasingly strong search for alternative materials to Portland cement has resulted in the development of alkali-activated cements (AAC) that are very effective at using industrial by-products as raw materials, which also contributes to the volume reduction in landfilled waste. Several studies targeting the development of AAC—based on wastes containing silicon and calcium—for chemical stabilization of soils have demonstrated their excellent performance in terms of durability and mechanical performance. However, most of these studies are confined to a laboratory characterization, ignoring the influence and viability of the in situ construction process and, also important, of the in situ curing conditions. The present work investigated the field application of an AAC based on carbide lime and glass wastes to stabilize fine sand acting as a superficial foundation. The assessment was supported on the unconfined compressive strength (UCS) and initial shear modulus (G<sub>0</sub>) of the developed material, and the field results were compared with those prepared in the laboratory, up to 120 days curing. In situ tests were also developed on the field layers (with diameters of 450 and 900 mm and thickness of 300 mm) after different curing times. To establish a reference, the mentioned precursors were either activated with a sodium hydroxide solution or hydrated with water (given the reactivity of the lime). The results showed that the AAC-based mixtures developed greater strength and stiffness at a faster rate than the water-based mixtures. Specimens cured under controlled laboratory conditions showed better results than the samples collected in the field. The inclusion of the stabilized layers clearly increased the load-bearing capacity of the natural soil, while the different diameters produced different failure mechanisms, similar to those found in Portland cement stabilization.The authors wish to explicit their appreciation to FAPERGS/CNPq 12/2014-PRONEX (Project #16/2551-0000469-2), MCT-CNPq (Editais INCT-REAGEO, Universal and Produtividade em Pesquisa) and MEC-CAPES (PROEX) for the support to the research group.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoSecco, Marina PaulaMesavilla, Débora ThaísFloss, Márcio FelipeConsoli, Nilo CesarMiranda, Tiago F. S.Cristelo, Nuno2021-11-292021-11-29T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/76672engSecco, M.P.; Mesavilla, D.T.; Floss, M.F.; Cesar Consoli, N.; Miranda, T.; Cristelo, N. Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime. Appl. Sci. 2021, 11, 11286. https://doi.org/10.3390/app11231128610.3390/app11231128611286https://www.mdpi.com/2076-3417/11/23/11286info: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:RCAAP2023-07-21T12:43:31Zoai:repositorium.sdum.uminho.pt:1822/76672Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:41:00.622856Repositório 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 Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
title Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
spellingShingle Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
Secco, Marina Paula
Geotechnical engineering
Ground improvement
Alkali-activated cements
Recycling and reuse of materials
Science & Technology
title_short Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
title_full Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
title_fullStr Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
title_full_unstemmed Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
title_sort Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
author Secco, Marina Paula
author_facet Secco, Marina Paula
Mesavilla, Débora Thaís
Floss, Márcio Felipe
Consoli, Nilo Cesar
Miranda, Tiago F. S.
Cristelo, Nuno
author_role author
author2 Mesavilla, Débora Thaís
Floss, Márcio Felipe
Consoli, Nilo Cesar
Miranda, Tiago F. S.
Cristelo, Nuno
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Secco, Marina Paula
Mesavilla, Débora Thaís
Floss, Márcio Felipe
Consoli, Nilo Cesar
Miranda, Tiago F. S.
Cristelo, Nuno
dc.subject.por.fl_str_mv Geotechnical engineering
Ground improvement
Alkali-activated cements
Recycling and reuse of materials
Science & Technology
topic Geotechnical engineering
Ground improvement
Alkali-activated cements
Recycling and reuse of materials
Science & Technology
description The increasingly strong search for alternative materials to Portland cement has resulted in the development of alkali-activated cements (AAC) that are very effective at using industrial by-products as raw materials, which also contributes to the volume reduction in landfilled waste. Several studies targeting the development of AAC—based on wastes containing silicon and calcium—for chemical stabilization of soils have demonstrated their excellent performance in terms of durability and mechanical performance. However, most of these studies are confined to a laboratory characterization, ignoring the influence and viability of the in situ construction process and, also important, of the in situ curing conditions. The present work investigated the field application of an AAC based on carbide lime and glass wastes to stabilize fine sand acting as a superficial foundation. The assessment was supported on the unconfined compressive strength (UCS) and initial shear modulus (G<sub>0</sub>) of the developed material, and the field results were compared with those prepared in the laboratory, up to 120 days curing. In situ tests were also developed on the field layers (with diameters of 450 and 900 mm and thickness of 300 mm) after different curing times. To establish a reference, the mentioned precursors were either activated with a sodium hydroxide solution or hydrated with water (given the reactivity of the lime). The results showed that the AAC-based mixtures developed greater strength and stiffness at a faster rate than the water-based mixtures. Specimens cured under controlled laboratory conditions showed better results than the samples collected in the field. The inclusion of the stabilized layers clearly increased the load-bearing capacity of the natural soil, while the different diameters produced different failure mechanisms, similar to those found in Portland cement stabilization.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-29
2021-11-29T00:00:00Z
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/1822/76672
url http://hdl.handle.net/1822/76672
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Secco, M.P.; Mesavilla, D.T.; Floss, M.F.; Cesar Consoli, N.; Miranda, T.; Cristelo, N. Live-Scale Testing of Granular Materials Stabilized with Alkali-Activated Waste Glass and Carbide Lime. Appl. Sci. 2021, 11, 11286. https://doi.org/10.3390/app112311286
10.3390/app112311286
11286
https://www.mdpi.com/2076-3417/11/23/11286
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 (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
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
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