An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives

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Published: Sep 11, 2013
DOI: https://doi.org/10.35784/bud-arch.2011
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DOI

https://doi.org/10.35784/bud-arch.2011

Authors

Grzegorz Golewski

g.golewski@pollub.pl

Department of Civil Engineering Structures; Faculty of Civil Engineering and Architecture; Lublin University of Technology
https://orcid.org/0000-0001-9325-666X

Abstract

This paper presents the results of fracture toughness tests of concrete with fly ash (FA), specified at the third model fracture. Concrete composites with the additives of 0%, 20% and 30% siliceous FA were analysed. Fracture toughness tests were performed on axial torsion machine MTS 809 Axial/Torsional Test System, using the cylindrical specimens with dimensions of 150/300 mm, with a circumferential notch made in the half-height of cylinders. The studies examined effect of FA additive on the parameter KIIIc. The Analysis of the results revealed that a 20% FA additive causes increase in KIIIc, while a 30% FA additive causes decrease in fracture toughness.

Keywords:

concrete, fly ash, fracture toughness, third mode fracture

References

Article Details

Golewski, G. (2013) “An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives”, Budownictwo i Architektura, 12(3), pp. 145–152. doi: 10.35784/bud-arch.2011.