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新编《钢筋混凝土工程施工及验收规范》(GBJ204——83)业经城乡建设环境保护部批准颁发,从1984年7月1日起正式实施。与原规范(GBJ10——65修订本)相比,有较大的修改。本文仅就其中混凝土试配强度条文改动的考虑作些介绍。一、原规范条文第83条混凝土的配合比应通过试验选定,但考虑到实际施工条件与试验室条件的差别,试配时应按设计标号提高10～15％选择配合比。
The new “Code for the Construction and Acceptance of Reinforced Concrete Projects” (GBJ204-83) was approved by the Ministry of Environmental Protection of Urban and Rural Development and was formally implemented on July 1, 1984. Compared with the original specification (GBJ10-65 revision), there are major changes. This article only introduces the considerations of the changes in the strength of the concrete mix provisions. First, the original provisions of the provisions of Article 83 Mixing ratio of concrete should be selected through the test, but taking into account the actual construction conditions and laboratory conditions, the trial match should be increased by 10 to 15% of the design mix selection ratio.