Title:
Behavior of High-Performance Concrete under Uniaxial and Biaxial Loading
Author(s):
Xiaodan Ren, Weizhong Yang, Yong Zhou, and Jie Li
Publication:
Materials Journal
Volume:
105
Issue:
6
Appears on pages(s):
548-558
Keywords:
constitutive law; strain control; strength envelope
DOI:
10.14359/20196
Date:
11/1/2008
Abstract:
A systematic experimental research was carried out to investigate the mechanical properties of high-performance concrete (HPC). A total of 91 plate specimens were tested in four different loading conditions including uniaxial tension, uniaxial compression, biaxial compression, and tension compression with the help of a closed-loop testing machine. Uniaxial and biaxial complete stressstrain curves were obtained under a strain control loading scheme. Based on the stochastic process theory, the average curves and standard deviation curves were obtained for uniaxial loading conditions. The rehardening of concrete after having entered the softening stage was observed in this experiment. The ultimate strength envelopes in both stress and strain space were developed through parameter identification of the complete stress-strain curves. This research laid a foundation for further research on the multiaxial constitutive law of concrete.