Artículos de revistas
Hardened properties of self-compacting concrete - A statistical approach
Fecha
2010Registro en:
CONSTRUCTION AND BUILDING MATERIALS, v.24, n.9, p.1608-1615, 2010
0950-0618
10.1016/j.conbuildmat.2010.02.032
Autor
ALMEIDA FILHO, F. M.
BARRAGAN, B. E.
CASAS, J. R.
DEBS, A. L. H. C. El
Institución
Resumen
This work presents a statistical study on the variability of the mechanical properties of hardened self-compacting concrete, including the compressive strength, splitting tensile strength and modulus of elasticity. The comparison of the experimental results with those derived from several codes and recommendations allows evaluating if the hardened behaviour of self-compacting concrete can be appropriately predicted by the existing formulations. The variables analyzed include the maximum size aggregate, paste and gravel content. Results from the analyzed self-compacting concretes presented variability measures in the same range than the expected for conventional vibrated concrete, with all the results within a confidence level of 95%. From several formulations for conventional concrete considered in this study, it was observed that a safe estimation of the modulus of elasticity can be obtained from the value of compressive strength; with lower strength self-compacting concretes presenting higher safety margins. However, most codes overestimate the material tensile strength. (C) 2010 Elsevier Ltd. All rights reserved.