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Triaxial Compressive Strength of Concrete Subjected to High Temperatures
An experimental study was undertaken to develop an extension of Mohr-Coulomb and Newman models to predict the failure of concrete subjected to elevated temperatures. Concrete specimens of dimensions were prepared and subjected to various temperature levels of 300, 500, and 700°C. The tests were carried out in triaxial cell using various confining stress levels. The applied confining pressures varied between 1.4 and 24 MPa, corresponding to 3 and 54% of the uniaxial compressive strength. Test results indicated that the increase in temperature and/or confining pressure lead to a significant change in the mechanical properties of concrete. Furthermore, the Mohr-Coloumb and Newman models did not provide good fitting of the experimental data obtained on concrete subjected to high temperature of up to 700°C. A dehydrate index is introduced and used to define new variables in the existing models. The modified models are shown to adequately predict the residual strength of concrete that has been subjected to high temperatures.
Triaxial Compressive Strength of Concrete Subjected to High Temperatures
An experimental study was undertaken to develop an extension of Mohr-Coulomb and Newman models to predict the failure of concrete subjected to elevated temperatures. Concrete specimens of dimensions were prepared and subjected to various temperature levels of 300, 500, and 700°C. The tests were carried out in triaxial cell using various confining stress levels. The applied confining pressures varied between 1.4 and 24 MPa, corresponding to 3 and 54% of the uniaxial compressive strength. Test results indicated that the increase in temperature and/or confining pressure lead to a significant change in the mechanical properties of concrete. Furthermore, the Mohr-Coloumb and Newman models did not provide good fitting of the experimental data obtained on concrete subjected to high temperature of up to 700°C. A dehydrate index is introduced and used to define new variables in the existing models. The modified models are shown to adequately predict the residual strength of concrete that has been subjected to high temperatures.
Triaxial Compressive Strength of Concrete Subjected to High Temperatures
Hammoud, Rabah (author) / Yahia, Ammar (author) / Boukhili, Rachid (author)
Journal of Materials in Civil Engineering ; 26 ; 705-712
2013-06-08
82013-01-01 pages
Article (Journal)
Electronic Resource
Unknown
Triaxial Compressive Strength of Concrete Subjected to High Temperatures
| Online Contents | 2014
Triaxial Compressive Strength of Concrete Subjected to High Temperatures
| British Library Online Contents | 2014
| British Library Online Contents | 2017