Vibrated Concrete vs. Self-Compacting Concrete: Comparison of Fracture Mechanics Properties

Sara Korte; Veerle Boel; Wouter de Corte; Geert de Schutter

doi:10.4028/www.scientific.net/KEM.601.199

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 601Vibrated Concrete vs. Self-Compacting Concrete:...

Vibrated Concrete vs. Self-Compacting Concrete: Comparison of Fracture Mechanics Properties

Abstract:

This study focuses on the fracture mechanics aspect of self-compacting concrete, compared to vibrated concrete. The most commonly used experiments to investigate the toughness and cracking behaviour of concrete are the three-point bending test (3PBT) on small, notched beams, and the wedge-splitting test (WST) on cubic samples with guiding groove and starter notch. From the resulting P-CMOD curves (applied load versus crack mouth opening displacement), different fracture parameters, such as fracture energy and fracture toughness, can be extracted. Moreover, using inverse analysis, the σ-w relationship (tensile stress versus crack width) can be derived. This paper lists the results of a series of tests on samples, made of VC, SCC of equal strength, and SCC with identical w/c factor. Subsequently, a comparison of the mechanical characteristics is made, revealing important differences regarding several fracture parameters.

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Periodical:

Key Engineering Materials (Volume 601)

Pages:

199-202

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.601.199

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Online since:

March 2014

Authors:

Sara Korte, Veerle Boel, Wouter de Corte, Geert de Schutter

Keywords:

Cracking Behavior, Fracture Mechanics, Self-Compacting Concrete (SCC), Three-Point Bending Test, Wedge-Splitting Test

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References

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