TENSILE BEHAVIOR OF HIGH PERFORMANCE CONCRETE AT EARLY AGES
Early-age material properties of concrete,especially tensile behavior areindispensable parameters to predict and model risks of pre-mature cracking,which seriouslydeteriorates durability of concrete elements and structures,but have hardly received muchattention. With development and application of high performance/strength concrete(HPC/HSC),early-age cracking-induced durability issues become more and more severe. As abasic research work,direct tensile behavior of HPC with different mix proportions at earlyages were preliminarily investigated with self-designed testing rig in this paper. Theconclusions of the present study can be drawn as follows: a) Testing rig developed in thismaterial effectively evaluated direct tensile behaviors of hardening HPC,b) Tensile straincapacity of HPC was very high in the period of hardening,which rapidly decreased with ageand minimum value was reached later (about 12 hours) and c) Tensile strength and tensileelastic modulus of HPC rapidly developed at early ages,and furthermore,the rate ofdevelopment of tensile elastic modulus is much higher than that of tensile strength. Directtensile strength was about 0.96 times of splitting tensile strength.
high performance concrete early age tensile strain capacity tensile strength tensile elastic modulus
Chenhui JIANG Yang YANG Yujie YING
Construction Engineering Department,Zhejiang College of Construction,PR China College of Architecture & Construction Engineering,Zhejiang University of Technology,PR China
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
350-355
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）