Experimental Research on Constitute Relation of Concrete under Uniaxial Tension and Compression with Different Strain Rate

Abstract:

The constitutive relation of concrete under uniaxial tension and compression is an essential theoretical basis for structural analysis of concrete. Because of the lack of sufficient stiffness for ordinary test device, a stable decline branch of stress-strain curve could not be obtained. The condition of realizing the stress-strain complete curve for concrete uniaxial tension and compression is derived. The experiment device for uniaxial tension and compression was designed and fabricated with increasing stiffness method. Experiments were carried out for concrete with grade C30~C60 and strain rate 10^-5/s~10^-2/s. The equation for stress-strain curve in the rising branch were obtained and so were the complete stress-strain curve of uniaxial tension and compression under different strain ratio, which provide the theoretical basis for concrete structural analysis.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 3279-3283
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.3279
• Online since: May 2011
• Authors: Hai Bin Chen, You Po Su, Jun Wei Xing, Yu Min Zhang
• Keywords: Concrete, Constitute Relation, Experiment Device, Strain Rate, Strength

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