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国家标准《混凝土结构工程施工及验收规范》GB50204—92已经出版,自1993年5月1日起施行,规范共分8章和5个附录,本次修订的主要内容有:根据《建筑结构设计通用符号、计算单位和基本术语》GBJ83—85规定,修改了有关的符号、计量单位和基本术语:采用了新的混凝土强度分级方法,用混凝土强度等级取代了混凝土设计标号,相应修改了混凝土施工配制强度的确定原则和混凝土强度检验评定的方法等;增加了预拌混凝土、大体积混凝土、无粘接预应力混凝
The national standard “Code for Construction and Acceptance of Concrete Structure Engineering” GB50204-92 has been published and implemented since May 1, 1993. The specification is divided into 8 chapters and 5 appendices. The main contents of this revision are: Design according to “Architectural Structures” General signs, calculation units and basic terms "GBJ83-85 regulations, revised the relevant symbols, units of measurement and basic terms: the use of a new concrete strength classification method, replace the concrete design grade with the concrete strength grade, and accordingly modify the concrete construction The principle of the determination of the strength of the preparation and the method of the concrete strength inspection and assessment; The addition of ready-mixed concrete, mass concrete, and unbonded prestressed coagulation