Innovative low-cost system for early age E-modulus monitoring of cement pastes : validation and application to nanosilica-added and limestone-calcined clay cements

Ribeiro, Renan Rocha; Sousa, Matheus Ian Castro; Rêgo, João Henrique da Silva; Lameiras, Rodrigo de Melo

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Campo DC	Valor	Idioma
dc.contributor.author	Ribeiro, Renan Rocha	-
dc.contributor.author	Sousa, Matheus Ian Castro	-
dc.contributor.author	Rêgo, João Henrique da Silva	-
dc.contributor.author	Lameiras, Rodrigo de Melo	-
dc.date.accessioned	2022-05-05T14:19:12Z	-
dc.date.available	2022-05-05T14:19:12Z	-
dc.date.issued	2022-01-05	-
dc.identifier.citation	RIBEIRO, Renan Rocha et al. Innovative low-cost system for early age E-modulus monitoring of cement pastes: validation and application to nanosilica-added and limestone-calcined clay cements. Matererials and Structures, v. 55, art. n. 13, 2022. DOI: https://doi.org/10.1617/s11527-021-01849-w.	pt_BR
dc.identifier.uri	https://repositorio.unb.br/handle/10482/43648	-
dc.language.iso	Inglês	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Acesso Restrito	pt_BR
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	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Nanosílica	pt_BR
dc.subject.keyword	EMM-ARM	pt_BR
dc.identifier.doi	https://doi.org/10.1617/s11527-021-01849-w	pt_BR
dc.relation.publisherversion	https://link.springer.com/article/10.1617/s11527-021-01849-w	pt_BR
dc.description.abstract1	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.	pt_BR
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