1.1 本规程涵盖了在实验室或现场使用新拌自密实混凝土（SCC）代表性样品制作试样的程序。本规程适用于标称最大骨料粒径高达25 mm[1 in]的自密实混凝土坍落度流量为500 mm[20 in]或更大。如果坍落度小于500 mm[20 in]按照标准中所述的制作程序制作试样。 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。 每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.3 本标准并非旨在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。 ( 警告 -新鲜的水硬性胶结混合物具有腐蚀性，长时间接触可能会对暴露的皮肤和组织造成化学烧伤。 2. ) 1.4 本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 ====意义和用途====== 4.1 制造新拌混凝土试样的现有做法和试验方法不适用于自密实混凝土。本规程规定了使用坍落度为500 mm[20 in]的自密实混凝土制作试样的要求和程序或更大。

1.1 This practice covers procedures for fabricating test specimens in the laboratory or field using a representative sample of fresh self-consolidating concrete (SCC). This practice is applicable to SCC with a nominal maximum aggregate size up to 25 mm [1 in.] and a slump flow of 500 mm [20 in.] or greater. If the slump flow is less than 500 mm [20 in.] follow the fabrication procedures described in the standard for which the test specimen is required. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 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. ( Warning —Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to exposed skin and tissue upon prolonged exposure. 2 ) 1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. ====== Significance And Use ====== 4.1 Existing practices and test methods for fabricating fresh concrete test specimens are not suited to SCC. This practice provides requirements and procedures for fabricating test specimens with SCC having a slump flow of 500 mm [20 in.] or greater.