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The high temperature behaviour of concrete under biaxial conditions
AbstractExperimental investigations at temperatures up to 600 °C were made with a new concrete test equipment which allows the determination of strengths and deformations of concrete subjected to biaxial compressive stresses at high temperatures. The equipment is described and test results are reported. The test results show that the biaxial high temperature strength is greater than the uniaxial strength. An increase of the biaxial strength was observed at comparatively high temperatures. Up to 300 °C failure occurs with an explosive and spontaneous character. At higher temperatures the failure process runs moderately. The stress-strain relationships show a significant dependence on temperature and on current stress ratio: The rupture strains increase with increasing stress ratios and with increasing temperatures.
The high temperature behaviour of concrete under biaxial conditions
AbstractExperimental investigations at temperatures up to 600 °C were made with a new concrete test equipment which allows the determination of strengths and deformations of concrete subjected to biaxial compressive stresses at high temperatures. The equipment is described and test results are reported. The test results show that the biaxial high temperature strength is greater than the uniaxial strength. An increase of the biaxial strength was observed at comparatively high temperatures. Up to 300 °C failure occurs with an explosive and spontaneous character. At higher temperatures the failure process runs moderately. The stress-strain relationships show a significant dependence on temperature and on current stress ratio: The rupture strains increase with increasing stress ratios and with increasing temperatures.
The high temperature behaviour of concrete under biaxial conditions
Ehm, C. (author) / Schneider, U. (author)
Cement and Concrete Research ; 15 ; 27-34
1984-03-16
8 pages
Article (Journal)
Electronic Resource
English
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