一、前言混凝土的破坏机理是一个复杂的问题,彻底搞清这个问题还有待于今后的努力。本文仅就混凝土试件在单轴受压条件下的试验数据,对混凝土破坏机理作初步分析。单轴受压的混凝土试件,其内部裂纹的开展是导致破坏的根源,而混凝土破坏则经历了内部裂纹产生、扩展和延伸直至混凝土断裂成碎块而丧失承载能力这样一个过程,因此混凝土的破坏是逐步完成的。混凝土是由水泥石、细骨料和粗骨料所 I. INTRODUCTION The destruction mechanism of concrete is a complex issue. It is still necessary to make thorough efforts to clarify this issue. In this paper, the preliminary analysis of the concrete failure mechanism is made on the test data of concrete specimens under uniaxial compression conditions. In uniaxially stressed concrete specimens, the development of internal cracks is the root cause of the failure, while the concrete failure is experienced by a process in which the internal cracks are generated, expanded and extended until the concrete is broken into pieces and the bearing capacity is lost. Destruction is gradually completed. Concrete is made of cement stone, fine aggregate, and coarse aggregate