Live-scale testing of granular materials stabilized with alkali-activated waste glass and carbide lime
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/1822/76672 |
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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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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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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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1799132957807476736 |