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本次标准修订中对GB/T 15345—2003《混凝土输水管试验方法》标准的范围、规范性引用文件、术语和定义、外观质量、几何尺寸、水压、外压荷载、混凝土强度、保护层砂浆抗压强度、保护层砂浆吸水率以及管子接头相对转角等项目都作了不同程度的修改。为了方便使用新版标准的各类人员加深对各个项目试验方法的理解,本文基于标准修订编制说明的内容对新标准的主要变化之处进行了比较完整的说明。
This revision of the standard GB / T 15345-2003 “concrete pipe test methods” standard range, normative references, terms and definitions, appearance quality, geometry, water pressure, external pressure load, concrete strength, protective layer Mortar compressive strength, water absorption of protective layer mortar and the relative angle of the pipe joints and other projects have been modified to varying degrees. In order to facilitate the use of new standards of various types of personnel to deepen the understanding of each project test methods, this article based on the standard revision of the contents of the description of the new standard of major changes have been more complete description.