1.1 本规范涵盖了在水泥制造过程中掺入材料时，研究材料有效性以有益地改变水硬性水泥性能的方法。 1.2 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.3 水泥中添加剂的影响可能会显著改变其预期改性以外的性能。本规范旨在测试此类变更。 表1 规定了水泥浆和砂浆的特性值，从而可以判断添加剂的影响。同样地 表2 规定了混凝土的类似标准。某些添加可能对一个以上的目的有效，如 3.1.4 和 3.1.5 . 1.4 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers methods to investigate the effectiveness of a material to beneficially change the properties of hydraulic cements when the material is incorporated during manufacture of the cement. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 The effect of additions in cement may markedly change properties other than those they are intended to modify. This specification is designed to test for such changes. Table 1 sets forth values for those properties of cement pastes and mortars that would permit a judgment of the changes effected by an addition. Likewise, Table 2 sets forth similar criteria for concrete. Certain additions may be found effective for more than one purpose as indicated in 3.1.4 and 3.1.5 . 1.4 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.