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Standard Practice for Fabricating Test Specimens with Self-Consolidating Concrete 用自固结混凝土制作试样的标准实施规程
发布日期: 2023-10-01
1.1 本规程涵盖了在实验室或现场使用新鲜自密实混凝土(SCC)的代表性样品制作试样的程序。本规程适用于标称最大骨料尺寸不超过25 mm[1 in.]且坍落度流量不超过500 mm[20 in.]的SCC。如果坍落度流量小于500 mm[20 in.],则遵循要求试样的标准中所述的制造程序。 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。每个系统中规定的值可能不是完全相等的;因此,每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 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)。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 ( 警告 --新鲜的水硬性水泥混合物具有腐蚀性,长时间暴露可能会对暴露的皮肤和组织造成化学灼伤。 2. ) 1.4 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注(不包括表和图中的注释和脚注)不应被视为本标准的要求。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 4.1 制造新浇混凝土试样的现有做法和试验方法不适用于SCC。本规程提供了制造坍落度流量为500 mm[20 in.]或更大的SCC试样的要求和程序。
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, health, and environmental 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. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== 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.
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归口单位: C09.47
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