Mechanical properties of cement paste curing at different isothermal conditions

5th All-Russian Conference with International Participation POLAR MECHANICS

地球科学;力学

Gnyrya, A.I.^1 ; Abzaev, Yu.A.^2 ; Korobkov, S.V.^1 ; Gauss, K.S.^1

Construction Engineering Technology Department, Tomsk State University of Architecture and Building, Solyanaya Sq., 2, Tomsk

634003, Russia^1

Higher Mathematics Department, Tomsk State University of Architecture and Building, Solyanaya Sq., 2, Tomsk

634003, Russia^2

关键词: Catastrophic failures;    Elastic properties;    Isothermal conditions;    Main parameters;    Plastic strain range;    Strength property;    Stress increase;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/193/1/012010/pdf
DOI  :  10.1088/1755-1315/193/1/012010

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The paper studies the intensity of strength generation in the concrete paste during the time period of 0-67 hours, at 40, 50 and 70 °C isothermal curing. It is shown that at these temperatures the yield stress increases by one order of magnitude. The elastic properties of the cement paste also significantly increase. The plastic strain range reduces with curing time, and the catastrophic failure of specimens occurs at the end of the investigated temperature range. Stress-strained curves in the plastic range are non-monotonous, with a high density of breaks. The yield stress is the main parameter for evaluating the strength properties of the cement paste.