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砼标号和砼强度是砼及其构件或工程结构的重要力学性能指标,也是构件和工程设计及其质量检验的重要依据。对于砼标号和不同受力情况下的砼强度的要求与取值方法,有关的设计和施工验收规范均有明确的规定,但在实际执行和使用过程中,由于对“标号”、“强度”的定义及其关系认识不明确,往往会产生一些问题,如把与构件或结构同条件下养护的试块的强度作为砼标号,将设计强度和设计标号混淆为同一概念
The 砼-mark and 砼 strength are important mechanical performance indicators of 砼 and its components or engineering structures, and they are also important basis for component and engineering design and quality inspection. The design and construction acceptance specifications of the enthalpy number and the strength requirements under different stress conditions are clearly stipulated, but in the actual implementation and use, due to the “label” and “strength” The definition of the relationship and its relationship are unclear, and often result in some problems. For example, the strength of a test block that is conserved under the same conditions as the component or structure is used as a reference mark, and the design intensity and the design index are confused with the same concept.