Cohesive crack modeling of influence of sudden changes in loading rate on concrete fracture
Abstract
The results of an experimental study of a sudden change in loading rate on the fracture behavior of normal- and high-strength concrete specimens of three different sizes are reported. Geometrically similar three-point bend specimens were subjected to either a sudden 1000-fold increase or a 10-fold decrease of the loading rate. It was observed that for a large increase of the loading rate, the post-peak softening can be reversed to hardening followed by a second peak of the stress-strain diagram. A sudden decrease of the loading rate initially causes, a steeper softening slope of this diagram. The results are similar for normal and high strength concrete specimens. The viscoelastic cohesive crack model with the rate-dependent softening law is used to model the experimental results.
Additional Information
Copyright © 1995 Elsevier. (Received 23 September 1994) This experimental work was supported by the Center for Advanced Cement-Based Materials at Northwestern University. Further support for the theoretical formulation has been obtained under NSF grant MSS 9114476 for Northwestern University.Additional details
- Eprint ID
- 49423
- DOI
- 10.1016/0013-7944(95)00080-F
- Resolver ID
- CaltechAUTHORS:20140908-181326961
- Center for Advanced Cement-Based Materials, Northwestern University
- MSS 9114476
- NSF
- Created
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2014-09-12Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field