Influence of steam curing on the optimum sulfate content in limestone calcined clay cement (LC3).

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorAlmada, Bruna Silva-
Autor(es): dc.creatorSantana, Vanessa Pereira-
Autor(es): dc.creatorElói, Fernanda Pereira da Fonseca-
Autor(es): dc.creatorPimenta, Marcio Mateus-
Autor(es): dc.creatorBezerra, Augusto Cesar da Silva-
Autor(es): dc.creatorSantos, White José dos-
Autor(es): dc.creatorSilva, Guilherme Jorge Brigolini-
Data de aceite: dc.date.accessioned2026-08-11T11:23:44Z-
Data de disponibilização: dc.date.available2026-08-11T11:23:44Z-
Data de envio: dc.date.issued2026-01-29-
Data de envio: dc.date.issued2024-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/21309-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0950061825016903-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.conbuildmat.2025.141542-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1187825-
Descrição: dc.descriptionLC3 cement reduces carbon dioxide emissions by 40 % compared to Portland cement, substituting 45 % of the clinker with calcined clay and limestone. To ensure optimal performance, gypsum content must be optimized, as the high surface area of additions increases sulfate demand. Curing temperature and time also impacts hydration, phase stability, and mechanical properties, requiring sulfate adjustments. This study investigates how curing parameters influence hydration, microstructure, and performance of LC3 cements to optimize sulfate content. LC3 pastes with up to 3 % extra gypsum were cured at ambient (25 ± 2◦C, Ur>95 %) and steam conditions (40–60◦C, 4–16 hours, Ur>95 %). Results showed that isothermal calorimetry and bound water content alone cannot determine optimal sulfate levels. maximum mechanical strengths were obtained with 2–3 % gypsum, with the influence of temperature predominating over time after 10 hours of curing. At 60◦C, higher sulfate content promoted sulfate adsorption by C-(A)-S-H gel over ettringite formation.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectLimestone calcined clay cement-
Palavras-chave: dc.subjectSteam cure-
Palavras-chave: dc.subjectSulfate-
Palavras-chave: dc.subjectGypsum-
Palavras-chave: dc.subjectOptimization-
Título: dc.titleInfluence of steam curing on the optimum sulfate content in limestone calcined clay cement (LC3).-
Aparece nas coleções:Repositório Institucional - UFOP

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