Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/13578
Título: | Influence of the cementitious paste composition on the E-modulus and heat of hydration evolutions |
Autor(es): | Maia, Lino Azenha, Miguel Faria, R. Figueiras, Joaquim A. |
Palavras-chave: | Cement-based pastes Elastic moduli Calorimetry |
Data: | 2011 |
Editora: | Elsevier 1 |
Revista: | Cement and Concrete Research |
Resumo(s): | E-modulus and heat of hydration are features of cement-based materials that follow a rapid rate of change at early ages. This paper analyses the influence of the composition of cementitiouspastes on these features by using two methods: (i) a novel technique for continuously monitoring the E-modulus of cement-based materials, based on evaluating the first resonant frequency of a composite beam containing the material under testing, and (ii) an isothermal calorimeter to determine the released heat of hydration. Seventeen mixes are tested, encompassing pastes with five w/c ratios, as well as different contents of limestone filler, fly ash, silica fume and metakaolin. The results permit the comparison of the E-modulus and heat of hydration sensitivities to mix compositionchanges, and to check possible relations between these features. This work also helps to establish the technique (i) as a non-destructive method for monitoring the E-modulusevolution in cement-based materials since casting. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/13578 |
DOI: | 10.1016/j.cemconres.2011.03.008 |
ISSN: | 0008-8846 |
Versão da editora: | www.sciencedirect.com |
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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[8].pdf Acesso restrito! | 1,35 MB | Adobe PDF | Ver/Abrir |