MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Mix Sustentável (Online) |
Texto Completo: | https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/4749 |
Resumo: | More cement does not necessarily make better concrete or expedite construction schedules. In contrast, concrete with lower cementitious content can reach sufficient strength on time to avoid construction delays and last longer. Standard specifications require concrete overdesign (OD) for decades, but studies assessing the actual OD magnitudes are rare. This experimental study aimed to identify the required cementitious materials content (RCC) to meet the OD based on 958 compressive strength tests (σ) representing 8200 m3 of ready-mixed concrete for threshold buildings. The actual OD in commercial concrete appears to be 7 to 21% higher than required. The cementitious materials content should be reduced between 6 and 17% so that concrete can reach the required compressive strength (f’cr) without cement overconsumption. The additional overdesign (AOD) increased significantly as the specified compressive strength (f’c) increased, indicating that concrete producers can be more cautious when the f’cr is higher. Further research is needed to expand the range of cementitious contents and applications. |
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Mix Sustentável (Online) |
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MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENTMITIGAÇÃO DO SUPERDIMENSIONAMENTO EXCESSIVO DO CONCRETO PELA OTIMIZAÇÃO DO TEOR DE MATERIAIS CIMENTÍCIOSOverconsumptionPortland cementConcreteLimestone aggregatesOverdesignOverstrengthCompressive strength.ConcreteTeor de cimento Cimento Portland ConcretoAgregado calcárioSuperdimensionamentoResistência a compressãoEngenharia CivilMore cement does not necessarily make better concrete or expedite construction schedules. In contrast, concrete with lower cementitious content can reach sufficient strength on time to avoid construction delays and last longer. Standard specifications require concrete overdesign (OD) for decades, but studies assessing the actual OD magnitudes are rare. This experimental study aimed to identify the required cementitious materials content (RCC) to meet the OD based on 958 compressive strength tests (σ) representing 8200 m3 of ready-mixed concrete for threshold buildings. The actual OD in commercial concrete appears to be 7 to 21% higher than required. The cementitious materials content should be reduced between 6 and 17% so that concrete can reach the required compressive strength (f’cr) without cement overconsumption. The additional overdesign (AOD) increased significantly as the specified compressive strength (f’c) increased, indicating that concrete producers can be more cautious when the f’cr is higher. Further research is needed to expand the range of cementitious contents and applications.Mais cimento não necessariamente melhora a qualidade do concreto ou agiliza os cronogramas de construção. Em contraste, o concreto com menor teor de cimento pode durar mais e atingir resistência suficiente a tempo para evitar atrasos na construção. As normas técnicas exigem o superdimensionamento do concreto por décadas, mas estudos que avaliam as magnitudes do superdimensionamento real são raros. Este estudo experimental teve como objetivo identificar o teor de materiais cimentícios necessário para atender ao superdimensionamento requerido com base em 958 ensaios de resistência à compressão (σ) representando 8200 m³ de concreto para construções comerciais. O superdimensionamento real do concreto parece ser 7 a 21% acima do necessário. O conteúdo de materiais cimentícios deve ser reduzido entre 6 e 17% para que o concreto possa atingir a resistência à compressão requerida (f’cr) sem excesso de cimento. O nível do superdimensionamento excessivo aumentou significativamente com o aumento da resistência à compressão especificada (f’c), indicando que os produtores de concreto parecem ser mais cautelosos quando o f’cr é maior. Pesquisas adicionais são necessárias para expandir a gama de aplicações e teor de materiais cimentícios.UFSC - Federal University of Santa Catarina2022-09-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/474910.29183/2447-3073.MIX2022.v8.n4.19-26Mix Sustentável; Vol. 8 No. 4 (2022): Mix Sustentável (regular); 19-26MIX Sustentável; v. 8 n. 4 (2022): Mix Sustentável (regular); 19-262447-30732447-0899reponame:Mix Sustentável (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCenghttps://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/4749/4708NacionalCopyright (c) 2022 Rodrigo Antuneshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAntunes, Rodrigo2022-10-28T14:45:57Zoai:ojs.sites.ufsc.br:article/4749Revistahttp://mixsustentavel.paginas.ufsc.br/apresentacao-2/PUBhttp://ojs.sites.ufsc.br/index.php/mixsustentavel/oailisiane.librelotto@ufsc.br||mixsustentavel@gmail.com2447-30732447-0899opendoar:2022-10-28T14:45:57Mix Sustentável (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT MITIGAÇÃO DO SUPERDIMENSIONAMENTO EXCESSIVO DO CONCRETO PELA OTIMIZAÇÃO DO TEOR DE MATERIAIS CIMENTÍCIOS |
title |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
spellingShingle |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT Antunes, Rodrigo Overconsumption Portland cement Concrete Limestone aggregates Overdesign Overstrength Compressive strength. Concrete Teor de cimento Cimento Portland Concreto Agregado calcário Superdimensionamento Resistência a compressão Engenharia Civil |
title_short |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
title_full |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
title_fullStr |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
title_full_unstemmed |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
title_sort |
MITIGATION OF ADDITIONAL OVERDESIGN IN PORTLAND CEMENT CONCRETE BY OPTIMIZING THE CEMENTITIOUS MATERIALS CONTENT |
author |
Antunes, Rodrigo |
author_facet |
Antunes, Rodrigo |
author_role |
author |
dc.contributor.author.fl_str_mv |
Antunes, Rodrigo |
dc.subject.por.fl_str_mv |
Overconsumption Portland cement Concrete Limestone aggregates Overdesign Overstrength Compressive strength. Concrete Teor de cimento Cimento Portland Concreto Agregado calcário Superdimensionamento Resistência a compressão Engenharia Civil |
topic |
Overconsumption Portland cement Concrete Limestone aggregates Overdesign Overstrength Compressive strength. Concrete Teor de cimento Cimento Portland Concreto Agregado calcário Superdimensionamento Resistência a compressão Engenharia Civil |
description |
More cement does not necessarily make better concrete or expedite construction schedules. In contrast, concrete with lower cementitious content can reach sufficient strength on time to avoid construction delays and last longer. Standard specifications require concrete overdesign (OD) for decades, but studies assessing the actual OD magnitudes are rare. This experimental study aimed to identify the required cementitious materials content (RCC) to meet the OD based on 958 compressive strength tests (σ) representing 8200 m3 of ready-mixed concrete for threshold buildings. The actual OD in commercial concrete appears to be 7 to 21% higher than required. The cementitious materials content should be reduced between 6 and 17% so that concrete can reach the required compressive strength (f’cr) without cement overconsumption. The additional overdesign (AOD) increased significantly as the specified compressive strength (f’c) increased, indicating that concrete producers can be more cautious when the f’cr is higher. Further research is needed to expand the range of cementitious contents and applications. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/4749 10.29183/2447-3073.MIX2022.v8.n4.19-26 |
url |
https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/4749 |
identifier_str_mv |
10.29183/2447-3073.MIX2022.v8.n4.19-26 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.sites.ufsc.br/index.php/mixsustentavel/article/view/4749/4708 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Rodrigo Antunes https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Rodrigo Antunes https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Nacional |
dc.publisher.none.fl_str_mv |
UFSC - Federal University of Santa Catarina |
publisher.none.fl_str_mv |
UFSC - Federal University of Santa Catarina |
dc.source.none.fl_str_mv |
Mix Sustentável; Vol. 8 No. 4 (2022): Mix Sustentável (regular); 19-26 MIX Sustentável; v. 8 n. 4 (2022): Mix Sustentável (regular); 19-26 2447-3073 2447-0899 reponame:Mix Sustentável (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Mix Sustentável (Online) |
collection |
Mix Sustentável (Online) |
repository.name.fl_str_mv |
Mix Sustentável (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
lisiane.librelotto@ufsc.br||mixsustentavel@gmail.com |
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1798325230707408896 |