1.1当规程C31/C31M和规程C 1176中所述的标准捣棒和内部振动程序不可行时，本规程涵盖从混凝土中模制圆柱形试样。本规程适用于在实验室和现场制备的新拌混凝土。 1.2使用配备轴和圆板的电动振动锤在圆柱形模具中模制新拌混凝土。 1.3以英寸-磅单位或国际单位制表示的数值应单独视为标准值。在文本中，英寸-磅单位显示在括号中。每个系统中规定的值可能不是精确的等效值，因此，每个系统必须相互独立使用，不得以任何方式组合。 1.4本惯例的文本参考了注释和脚注，这些注释和脚注提供了解释性材料。 这些注释和脚注（不包括表和图中的注释和脚注）不应视为本惯例的要求。 1.5本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。更多预防信息请参见第6节。

1.1 This practice covers molding cylindrical test specimens from concrete when the standard procedures of rodding and internal vibration, as described in Practice C31/C31M and Practice C 1176, are not practicable. This practice is applicable to freshly-mixed concrete, prepared in the laboratory and the field. 1.2 Freshly-mixed concrete is molded in cylindrical molds using an electric vibrating hammer equipped with a shaft and circular plate. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system may not be exact equivalents, therefore, each system must be used independently of each other without combining in any way. 1.4 The text of this practice references notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered requirements of this practice. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Section 6 for additional precautionary information.