为了全面了解实际结构的受力情况,经常需要作比例尺较小的模型试验。模型所用的混凝土骨料往往比实际结构中的要小,为了方便就叫它为微型混凝土。一般来说,微型混凝土成分方面的一些特征和结硬状态的表现,几乎总是和函数lgD成 In order to fully understand the actual structure of the force situation, often need to make a smaller scale model test. The concrete aggregate used in the model tends to be smaller than in the actual structure and is called mini-concrete for convenience. In general, some of the characteristics of the micro-concrete components and the performance of the hard and soft state, almost always and function lgD into