Fracture of 0.1 and 2m long mortar beams under three-point-bending

Fracture of 0.1 and 2m long mortar beams under three-point-bending Two hugely different mortar beams with the volume ratio close to 1:1000 were tested under three-point-bending (3-p-b) to verify fracture predictions for the large and long (LL) structures from results of the small and short (SS) specimens. They differed by both size and geometry: SS specimens with span length S=0.1m, width W=40mm and S/W=2.5, and LL beams with S=2m, W=500mm and S/W=4. This study performed and analysed quasi-brittle fracture of 0.1m SS specimens with initial notch a0 from 1 to 25mm for determination of tensile strength ft and fracture toughness KIC, from which fracture of 2m LL beams with a0 of 250mm was accurately predicted. Experiment results from the two vastly different 3-p-b beams, highly heterogeneous SS and nearly homogeneous LL in comparison to aggregates, were analysed by the boundary effect model (BEM). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Materials & design Elsevier

Fracture of 0.1 and 2m long mortar beams under three-point-bending

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0264-1275
eISSN
0141-5530
D.O.I.
10.1016/j.matdes.2017.08.005
Publisher site
See Article on Publisher Site

Abstract

Two hugely different mortar beams with the volume ratio close to 1:1000 were tested under three-point-bending (3-p-b) to verify fracture predictions for the large and long (LL) structures from results of the small and short (SS) specimens. They differed by both size and geometry: SS specimens with span length S=0.1m, width W=40mm and S/W=2.5, and LL beams with S=2m, W=500mm and S/W=4. This study performed and analysed quasi-brittle fracture of 0.1m SS specimens with initial notch a0 from 1 to 25mm for determination of tensile strength ft and fracture toughness KIC, from which fracture of 2m LL beams with a0 of 250mm was accurately predicted. Experiment results from the two vastly different 3-p-b beams, highly heterogeneous SS and nearly homogeneous LL in comparison to aggregates, were analysed by the boundary effect model (BEM).

Journal

Materials & designElsevier

Published: Nov 5, 2017

References

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