Avaliação teórico-experimental da deformação por fluência de concretos auto-adensáveis

  • A. L. N. Ferraz Universidade do Estado de Mato Grosso (Unemat), Brasil
  • M. P. Barbosa Universidade Estadual Paulista (Unesp), Brasil
  • F. M. Salles Laboratorio Cesp de engenharia Civil (Cesp), Brasil
  • N. O. Pinto Jr. Universidade Estadual de Campinas (Unicamp), Brasil
DOI: https://doi.org/10.21041/ra.v1i3.19
Keywords: creep; shrinkage; deformations in concretes; self-compacting concrete

Abstract

The performance of self-compacting concretes of different classes – 35 e 55 MPa – were evaluated in relation to deformation under slow loading, basic creep, at ages of 7, 14, 28 and 56 days, and in relation to deformation due to shrinkage by drying. Test of compressive strength, tensile strength and elastic modulus were performed on the composites. The shrinkage results were appropriate, presenting similar curves with deformation values slightly lower for mixtures of water/cement equal to 0,45 (concrete “B”). The deformations under load (creep) were higher in the concretes with higher water/cement ratios and lower elastic moduli (concrete "A"). The more aged elements showed lower values of creep; the creep curves showed better stability in the elements with 28 and 56 days. The values of coefficients calculated as per NBR 6118 (ABNT, 2003) showed good correlation with the coefficients calculated experimentally.

Keywords: creep; shrinkage; deformations in concretes; self-compacting concrete.

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Published
2011-09-30
How to Cite
Ferraz, A. L. N., Barbosa, M. P., Salles, F. M., & Pinto Jr., N. O. (2011). Avaliação teórico-experimental da deformação por fluência de concretos auto-adensáveis. Revista ALCONPAT, 1(3), 233 - 250. https://doi.org/10.21041/ra.v1i3.19
Issue
Vol. 1 No. 3 (2011)
Section
Applied Research

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