An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives
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Published:
Sep 11, 2013
Issue Vol. 12 No. 3 (2013)
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An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives
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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
Article Details
Golewski, G. (2013) “An analysis of fracture toughness, at third mode fracture in concretes containing fly-ash additives”, Budownictwo i Architektura / Civil and Architectural Engineering, 12(3), pp. 145–152. doi: 10.35784/bud-arch.2011.
