【摘要】 本文通过试件的中心受拉试验,测定了砼的受拉应力-变形全曲线。部分试件还进行了反复荷载试验。试验中仔细观察了试件表面裂缝的开始和发展及其断离的全过程。文中给出峰值应变、弹性模量、波桑比、开裂时的应力和变形等主要性能指标,并提出了建议的应力-变形全曲线方程。更多还原

【Abstract】 Complete stress-deformation curves for concrete in tension were obtained from axial tension tests in which some of the specimens were tested under cyclic loading. The initiation and development of cracks on the surface of specimens up to its breaking down were observed carefully during the tests. Tensile strength and the corresponding strain,initial modulus of elasticity and the Poisson ratio, as well as the values of stress and deformation at cracking are presented. Equations for complete stress-deformation curves of concrete in tension are suggested.更多还原