NDLI: Modelling the influence of age of steel fibre reinforced self-compacting concrete on its compressive behaviour

Content Provider	Springer Nature Link
Author	Cunha, V. M. C. F. Barros, J. A. O. Sena Cruz, J.
Copyright Year	2007
Abstract	Steel fibre reinforced self-compacting concrete (SFRSCC) can combine the benefits of self-consolidating concrete technology with those derived from adding steel fibres to quasi-brittle cement based materials. In a recent applied research project joining pre-casting industry, private and public research institutions, a method was developed to design cost-competitive SFRSCC of rheological and mechanical properties required for the prefabrication of SFRSCC façade panels. To assure safe demoulding process of the panels, the influence of the concrete age on the compression behaviour of the SFRSCC should be known. For this purpose, series of tests with specimens of 12 h to 28 days were tested in order to analyze the age influence on the compressive strength, strain at peak stress, Young’s modulus, and compressive volumetric fracture energy. The experimental program was divided in two groups of test series, one with SFRSCC of a volumetric fibre percentage of 0.38% and the other with 0.57%. To apply the obtained data in the design and numerical analysis framework, the influence of the age on these SFRSCC properties was modelled. This work describes the carried out experimental program, presents and analyzes the obtained results, and provides the derived analytical expressions.Le béton auto-plaçant avec fibres métalliques (SFRSCC) peut combiner les avantages de la technologie de l’auto-consolidation du béton avec ceux qui résultent de l’addition de fibres métalliques aux matériaux fragiles. Dans un récent projet de recherche impliquant l’industrie de préfabrication et des institutions de recherches publiques et privées, on a développé une méthode pour obtenir du SFRSCC de coût compétitif, avec des caractéristiques rhéologiques et mécaniques requises pour la préfabrication de panneaux de façade en SFRSCC.Afin de garantir la sécurité du processus de décoffrage des panneaux, il faut connaître l’influence de l’âge sur le comportement à la compression du SFRSCC. Ainsi, on a fait des essais avec des éprouvettes âgées de 12 heures jusqu’à 28 jours, en vue d’analyser l’influence de l’âge sur la résistance à la compression, la déformation correspondant au pic en compression, le module d’Young et l’énergie volumétrique en compression. Le programme expérimental a été divisé en deux séries d’essais portant sur des mélanges de SFRSCC de pourcentage de fibres distinct de 0,38% et 0,57% en volume. Pour appliquer les résultats obtenus dans ce projet à la conception et à l’analyse numérique, l’influence de l’âge du SFRSCC sur les caractéristiques auparavant citées a été simulée. Ce travail décrit le programme expérimental réalisé. Il présente et analyse les résultats obtenus et propose des expressions analytiques.
Starting Page	465
Ending Page	478
Page Count	14
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	41
Issue Number	3
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-06-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Self-compacting concrete Steel fibre Compressive behaviour Early age Stress–strain relationship Analytical model Building Materials Civil Engineering Operating Procedures, Materials Treatment Mechanical Engineering Theoretical and Applied Mechanics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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