1.1 本规程涵盖了在实验室和现场使用超高性能混凝土（UHPC）代表性样品制作和测试样本的程序，以确定材料的性能。本规程适用于规定抗压强度至少为120 MPa（17）的UHPC 000 psi），标称最大粒径骨料小于5 mm[ 1. / 4. 在中。]以及200至250 mm[8至10 in]之间的流量通过第节中所述的改进流量表测试进行测量 6. . 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 如果从另一标准获得的所需结果未在本标准使用的相同单位制中报告，则允许使用SI快速参考指南中的转换因子转换这些结果 ( 1. ) . 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。 1.5 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灼伤。 3. 处理UHPC时，应佩戴护手用具。] 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本规程包括测量新鲜UHPC性能的程序以及制作和测试硬化UHPC试样的程序。 本规程参考了现有规程和试验方法，包括对这些参考标准的修改，以应用于UHPC。

1.1 This practice covers procedures for fabricating and testing specimens in the laboratory and the field using a representative sample of ultra-high performance concrete (UHPC), for the purpose of determining the properties of the material. This practice is applicable to UHPC with a specified compressive strength of at least 120 MPa (17 000 psi), with nominal maximum size aggregate of less than 5 mm [ 1 / 4 in.] and a flow between 200 and 250 mm [8 and 10 in.] as measured by the modified flow table test described in Section 6 . 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 If required results obtained from another standard are not reported in the same system of units as used by this standard, it is permitted to convert those results using the conversion factors found in the SI Quick Reference Guide ( 1 ) . 2 1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard. 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. [WARNING—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to exposed skin and tissue upon prolonged exposure. 3 Hand protection should be worn when handling UHPC.] 1.6 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 This practice includes procedures for measuring properties of fresh UHPC and procedures for making and testing specimens of hardened UHPC. The practice refers to existing practices and test methods and includes modifications to these referenced standards for application to UHPC.