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An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives
Author(s): Grzegorz GolewskiSubject(s): Architecture, Geography, Regional studies
Published by: Biblioteka Politechniki Lubelskiej
Keywords: concrete; fly ash; fracture toughness; third mode fracture
Summary/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.
Journal: Budownictwo i Architektura
- Issue Year: 12/2013
- Issue No: 3
- Page Range: 145-152
- Page Count: 8
- Language: Polish