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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.creator | Ribeiro, Renan Rocha | - |
Autor(es): dc.creator | Sousa, Matheus Ian Castro | - |
Autor(es): dc.creator | Rêgo, João Henrique da Silva | - |
Autor(es): dc.creator | Lameiras, Rodrigo de Melo | - |
Data de aceite: dc.date.accessioned | 2022-08-15T13:38:34Z | - |
Data de disponibilização: dc.date.available | 2022-08-15T13:38:34Z | - |
Data de envio: dc.date.issued | 2022-05-05 | - |
Data de envio: dc.date.issued | 2022-05-05 | - |
Data de envio: dc.date.issued | 2022-01-04 | - |
Fonte completa do material: dc.identifier | https://repositorio.unb.br/handle/10482/43648 | - |
Fonte completa do material: dc.identifier | https://doi.org/10.1617/s11527-021-01849-w | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/713524 | - |
Descrição: dc.description | The EMM-ARM (Elastic Modulus Measurement through Ambient Response Method) is an experimental technique that allows the determination of the E-modulus evolution curve of cementitious materials since casting. This work presents a validation of an innovative low-cost EMM-ARM test system and its use to study very early age (until 3 days) E-modulus evolution of cement pastes produced with a 1% nanosilica-added cement and a limestonecalcined clay (LC3 ) cement, produced with 1:2 claylimestone ratio and 50% clinker replacement. The tests produced, for the first time, continuous data about the early age E-modulus evolution, hydration degree and final setting time of these materials at the first 3 days of age. Compressive strength and Mercury Intrusion Porosimetry tests were also performed for complementary analysis. The validation results indicated the low-cost innovative system departed only up to 6.33% from reference results and had a coefficient of variation of the order of 4.50%. The application of the system on the studied cements revealed the nanosilica-added and LC3 cement pastes reached, respectively, 220% and 50% of an ordinary Portland cement (OPC) paste E-modulus at 12 h of age, and 180% and 70% at 24 h. The nanosilica-added and LC3 E-modulus gap to OPC paste progressively reduced after 3 days of age to 113% and 91%, respectively, tending to remain at this level at later ages. | - |
Publicador: dc.publisher | Springer | - |
Relação: dc.relation | https://link.springer.com/article/10.1617/s11527-021-01849-w | - |
Direitos: dc.rights | Acesso Restrito | - |
Palavras-chave: dc.subject | Nanosílica | - |
Palavras-chave: dc.subject | EMM-ARM | - |
Título: dc.title | Innovative low-cost system for early age E-modulus monitoring of cement pastes : validation and application to nanosilica-added and limestone-calcined clay cements | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional – UNB |
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