Fracture Toughness and Cracking Behaviour of SCC Compared to VC

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

doi:10.4028/www.scientific.net/KEM.577-578.205

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 577-578Fracture Toughness and Cracking Behaviour of SCC...

Fracture Toughness and Cracking Behaviour of SCC Compared to VC

Abstract:

Vibrated concrete (VC) and self-compacting concrete (SCC) have a substantially different composition, resulting in dissimilar mechanical properties regarding cracking behaviour. The critical value of the mode I stress-intensity factor K_IC is an appropriate fracture parameter for evaluating fracture toughness and can be obtained from three-point bending tests (3PBT) on small, notched specimens. Subsequent determination of the energy release rate thus allows to examine the crack propagation and fracture process of both concrete types. This paper describes the results of such 3PBTs on samples, made from VC and SCC. Evaluation of the cracking behaviour, derived from these results, reveals remarkable differences.

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Periodical:

Key Engineering Materials (Volumes 577-578)

Pages:

205-208

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.577-578.205

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Online since:

September 2013

Authors:

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

Keywords:

Cracking Behavior, Fracture Mechanics, Fracture Toughness, Self-Compacting Concrete (SCC), Stress Intensity Factor (SIF)

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