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随着混凝土荷载—变形研究的深化以及现代测试手段的发展,材料的内部结构及其破坏机理引起人们越来越大的兴趣。本文将结合“等应变”控制下的混凝土短期压缩试验,讨论混凝土承载前后内部结构的特点及其变化,并提出一些粗浅的看法。一、混凝土内部结构的特点众所周知,混凝土主要是由一定比例的粗、细骨料和水泥石结合而成的。由于谷组成材料本身的固有特性以及制作过程中的物理化学变化,混凝土不仅体现出典型非匀质
With the deepening of the study of the load-deformation of concrete and the development of modern testing methods, the internal structure of the material and its destruction mechanism have attracted more and more interest. In this paper, the short-term concrete compression test under the control of “same strain” will be discussed to discuss the characteristics and changes of the internal structure of the concrete before and after loading, and put forward some superficial views. First, the characteristics of the internal structure of concrete As we all know, concrete is mainly composed of a certain proportion of coarse, fine aggregate and cement stone. Due to the inherent characteristics of the grain composition material itself and the physical and chemical changes during the production process, the concrete not only shows typical non-homogeneity