本文论述了混凝土在轴向拉伸、轴向压缩以及弯曲试验条件下,由于受试件形状及浇注方向的影响,在混凝土内部存在的缺陷(裂缝、孔隙等)并不是随机分布的,而是带有一定的方向性,致使混凝土的强度、弹性模量、极限变形值及泊桑比等力学性能呈现各向异性特征。 This paper discusses the concrete in the axial tensile, axial compression and bending test conditions, due to the shape of the test piece and casting direction of the defects in the concrete (cracks, pores, etc.) are not randomly distributed, but With a certain direction, resulting in the anisotropy of the concrete mechanical properties such as strength, elastic modulus, ultimate deformation and Poisson’s ratio.