Title: Variability of the bond and mechanical properties of self-compacting concrete

Author(s): F. M. ALMEIDA FILHO, B. E. BARRAGÁN, J. R. CASAS, A. L. H. C. EL DEBS

Publication: IBRACON

Volume: 1

Issue: 1

Appears on pages(s): 31-57

Keywords: Self-compacting concrete, variability, hardened state, steel-concrete bond, beams, statistical analysis.

DOI:

Date: 3/30/2008

Abstract:
This main objective of this research is to evaluate the variability of the mechanical properties (compressive strength, modulus of elasticity and tensile strength) and bond strength of the self-compacting concrete (SCC), with 50 MPa compressive strength at 28 days, varying the maximum aggregate size and the SCC fluidity. The tests were made in 15 x 30 cm concrete cylinders and in beams standardized by Rilem-Ceb-Fib (1973). In agreement with the obtained results, can be concluded that the variability of the self-compacting concrete is small for the modulus of elasticity and for the compressive strength, but the tensile strength presented a significant variability due to the failure mode. About the bond strength, the variability was small showing that the self-compacting concrete is reliable and possesses great potential for use in the civil construction.