Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/21591
Título: | E-modulus evolution and its relation to solids formation of pastes from commercial cements |
Autor(es): | Maia, Lino Azenha, Miguel Geiker, Mette Figueiras, Joaquim A. |
Palavras-chave: | Hydration Elastic moduli Elastic moduli Resonant frequency Resonant frequency Cement paste Limestone filler Cement paste (D) Elastic moduli (C) Hydration (A) Limestone filler (D) |
Data: | 2012 |
Editora: | Elsevier 1 |
Revista: | Cement and Concrete Research |
Resumo(s): | Models for early age E-modulus evolution of cement pastes are available in the literature, but their validation is limited. This paper provides correlated measurements of early age evolution of E-modulus and hydration of pastes from five commercial cements differing in limestone content. A recently developedmethodology allowed continuous monitoring of E-modulus from the time of casting. The methodology is a variant of classic resonant frequencymethods,which are based on determination of the first resonant frequency of a composite beam containing the material. The hydration kinetics — and thus the rate of formation of solids — was determined using chemical shrinkagemeasurements. For the cements studied similar relationships between E-modulus and chemical shrinkage were observed for comparable water-to-binder ratio. For commercial cements it is suggested to model the E-modulus evolution based on the amount of binder reacted, instead of the degree of hydration. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/21591 |
DOI: | 10.1016/j.cemconres.2012.03.013 |
ISSN: | 0008-8846 |
Versão da editora: | http://www.sciencedirect.com/s |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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[14].pdf Acesso restrito! | 1,13 MB | Adobe PDF | Ver/Abrir |