Creep and shrinkage of high-strength self-compacting concrete: experimental and analytical analysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Aslani, F (Autor) Outra; Lino Maia (Autor) FEUP

Revista

Título: Magazine of Concrete Research

Vol. 65

Páginas: 1044-1058

ISSN: 0024-9831

Editora: ICE Publishing Ltd.

Indexação

ISI Web of Knowledge - 26 Citações

Scopus - 31 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil > Engenharia do betão

FOS: Ciências da engenharia e tecnologias > Engenharia civil

Outras Informações

ID Authenticus: P-006-805

DOI: 10.1680/macr.13.00048

Abstract (EN): In the present paper, a numerical and experimental study about creep and shrinkage behavior of a high strength self-compacting concrete is performed. Two new creep and shrinkage prediction models based on the comprehensive analysis on the available models of both conventional concrete and self-compacting concrete are proposed for high strength self-compacting concrete structures. In order to evaluate the predictability of the proposed models, an experimental program was carried out. A concrete which develops 60 MPa within 24 h was used to obtain experimental results. Several specimens were loaded: (i) at different ages and (ii) with different stress-to-strength ratios. Deformation in non-loaded specimens was also measured to assess shrinkage. All specimens were kept under constant stress during at least 600 days in a climatic chamber with temperature and relative humidity of 20 degrees C and 50%, respectively. Results showed that the new models were able to predict deformations with good accuracy, although provided deformations overestimated slightly.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15