Effect of different boundary conditions in direct tensile tests: experimental results
- 1 October 1999
- journal article
- research article
- Published by Thomas Telford Ltd. in Magazine of Concrete Research
- Vol. 51 (5) , 365-374
- https://doi.org/10.1680/macr.1999.51.5.365
Abstract
The effects of the kinematic ‘constrained’ of a direct tensile test on the complete load—displacement response in tension of concrete specimens were examined from tests with imposed uniform displacement (fixed platens) and from experiments with free rotation rotating platens through a closed-loop testing system. Cylindrical specimens and prismatic specimens were considered. The tests were monitored with an interferometric strain measurement (electronic speckle pattern interferometry). A notable outcome of the experiments is that the fixed platens imposed a more uniform strain field with higher peak loads. Also the post peak branch had a shape that depends on the boundary conditions under which the tests were performerd.Keywords
This publication has 1 reference indexed in Scilit:
- Microcracking and stress-strain curves for concrete in tensionMaterials and Structures, 1968