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Prediction of load-deflection behavior of plain concrete from fracture energy

✍ Scribed by P. Nallathambi; B.L. Karihaloo

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 473 KB
Volume: 16
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(86)90113-4

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✦ Synopsis

The paper examines two existing models for predicting the load-deflection behavior of plain concrete from fracture energy measured in three-point bending.

These models are shown to overestimate the peak load attainable by concrete beams.

This major drawback is overcome by proposing a new model that accounts for the strain hardening in the material prior to the attainment of peak load.

It is also argued that fracture energy in its present form is dependent on the specimen size and that it is not therefore a reliable indicator of the fracture toughness of plain concrete.

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