1.1 这两种替代试验方法用于评估补充胶凝材料（SCM）的化学反应性，该化学反应性是通过测量由SCM、氢氧化钙、碳酸钙、硫酸钾和氢氧化钾组成的水合糊剂在40°C下固化3天和7天的累积热释放或结合水含量来确定的。 1.1.1 这两种试验方法不区分水力反应性和火山灰反应性。 1.2 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.3 本标准的文本是指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）不应视为本标准的要求。 1.4 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、健康和环境实践，并确定监管限制的适用性。( 警告- 新鲜的水硬性胶结混合物具有腐蚀性，长时间接触可能会导致皮肤和组织化学烧伤。 ) 2. 1.5 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====== 5.1 这些试验方法用于评估SCM在7天固化时间内的化学（火山灰或水力）反应性。当与硅酸盐水泥一起使用时，这些测试方法的结果可用于估计SCM对强度发展或其他性能（如低渗透性）的潜在贡献。然而，试验结果不能替代直接测量使用该SCM制成的混凝土的相同性能。 5.2 氢氧化钙、碳酸钙、硫酸钾和氢氧化钾按比例混合，形成糊状物，其中这些成分的溶解离子模拟硅酸盐水泥系统中的孔隙溶液。 5.3 糊料在40°C下固化，以加速反应缓慢的SCM的反应速率。 5.4 这些测试方法允许直接测量潜在SCM的水力或火山灰反应性。这些测试方法也适用于在硅酸盐水泥基系统中使用的SCM的开发和研究中的筛选目的。此外，这些试验方法可用于硅酸盐水泥基产品的制造控制，以评估SCM部件的水力或火山灰反应性。 5.5 这些测试方法基于Avet等人的工作。 4. 这是RILEM技术委员会267——补充胶凝材料反应性试验的成果。 5. 试验方法基于规范涵盖的SCM的强度发展、热量演变和水结合之间已建立的相关性 C618型 , C989/C989M 和 C1240 ，并按指南 C1709 . 对于其他替代SCM，此类相关性的有效性尚未确定。 5.6 对于给定的应用，不需要使用方法A和方法B。在许多情况下，选择是基于用户对可用设备的确定。方法A还可以提供反应性速率的指示，因为在试验期间连续进行测量，而方法B提供了高达单个时间点的反应性水平。

1.1 These two alternative test methods are used to assess the chemical reactivity of a supplementary cementitious material (SCM) as determined by measurements of cumulative heat release or bound water content of hydrated pastes composed of the SCM, calcium hydroxide, calcium carbonate, potassium sulfate, and potassium hydroxide cured at 40 °C for 3 and 7 days. 1.1.1 These two test methods do not distinguish between hydraulic and pozzolanic reactivity. 1.2 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.3 The text of the standard refers to 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. 1.4 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 skin and tissue upon prolonged exposure. ) 2 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 ====== 5.1 These test methods are used to assess the chemical (pozzolanic or hydraulic) reactivity of SCMs over a curing time of 7 days. The results of these test methods can be used to estimate the potential contribution of a SCM to the development of strength, or other properties such as lower permeability, when used with portland cement. However, the test results are not a substitute for direct measurement of the same properties of concrete made with that SCM. 5.2 The calcium hydroxide, calcium carbonate, potassium sulfate, and potassium hydroxide are combined in proportions to provide a paste where the dissolved ions from these components simulate the pore solution in a portland cement system. 5.3 The pastes are cured at 40 °C to accelerate the rate of reaction of slowly reactive SCMs. 5.4 These test methods allow for the direct measurement of the hydraulic or pozzolanic reactivity of a potential SCM. These test methods are also suitable for screening purposes in the development and research of SCMs for use in portland cement-based systems. Furthermore, these test methods may be used in manufacturing control of portland cement-based products for assessing the hydraulic or pozzolanic reactivity of a SCM component. 5.5 These test methods are based on the work by Avet et al. 4 and are a result of the work of RILEM Technical Committee 267 – Tests for Reactivity of Supplementary Cementitious Materials. 5 The test methods are based on established correlations between strength development and evolution of heat and binding of water for SCMs covered by Specifications C618 , C989/C989M , and C1240 , and by Guide C1709 . For other alternative SCMs, the validity of such correlations has not been established. 5.6 There is no requirement to use Method A and Method B for a given application. In many instances the choice is based on the user’s determination of available equipment. Method A can also provide an indication of rate of reactivity because measurements are taken continuously during the test period, while Method B provides the level of reactivity up to a single point in time.