【摘要】 对混凝土断裂试验全过程的力学关系进行分析，确定了脆性材料断裂稳定破坏的试验条件和试验机的刚度条件。介绍了自行设计、制造刚性加载架，并前后完成混凝土，岩石小、中、大标准尺寸的系列化断裂试验，使脆性材料的断裂行为特别是应变软化特性得以明显显示的情况。更多还原

【Abstract】 The fracture property of concrete and rock is usually determined by a test. The fracture test needs a rigid loading frame. The article determines the test condition of stable crack about brittle materials and rigid condition of the frame. On the analysis of concrete, the rigid loading frame is introduced. We have finished fracture test of all standard-sized specimens of concrete and rock with the frame and obtained the fracture activity and the strain softening property.更多还原