1.1 该试验方法允许在16天内检测砂浆棒中胶结材料和骨料组合的有害碱-硅反应的可能性。胶结材料由不同比例的水硬性水泥、火山灰和矿渣水泥组成。 1.2 试验结果仅适用于测试的火山灰、矿渣和活性骨料的特定组合。 1.3 该试验不适用于评估水硬性水泥和骨料组合（即在不存在火山灰或矿渣水泥的情况下）产生有害反应的可能性。 1.4 本测试方法的文本是指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）不应被视为本试验方法的要求。 1.5 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 1.6 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。 1.7 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 该试验方法提供了一种方法，用于评估火山灰和矿渣水泥在与用于混凝土的骨料一起使用时，控制由于碱-硅反应引起的有害内部膨胀的能力。它基于南非共和国国家建筑研究所（NBRI）开发的加速试验方法 ( 1个- 4. ) 。 3. 4.2 该试验方法用于评估标准比例砂浆中具有单一骨料来源的某些胶结材料的组合。它产生了一个经验结果，用于与某些规范中的标准进行比较，以接受或拒绝针对特定应用评估的材料组合。目前，该方法没有标准程序来测试提议在混凝土中一起使用的细骨料和粗骨料，也没有标准程序用于改变砂浆的组成材料的比例，使其超过单个胶结材料成分彼此的相对比例，因为这些实践的重要性尚未确定，也没有建立适当的限制来评估使用这些修改进行的测试的结果。 4.3 不同水平的火山灰和矿渣水泥可能需要进行测试，以确定将膨胀降低到可接受水平所需的量。 火山灰和磨碎的粒状高炉矿渣可以单独测试，也可以组合测试。 4.4 建议使用试验方法对相同的骨料和水硬性水泥（不含火山灰和矿渣水泥）进行试验 260加元 。 4.5 按照本文所述进行的试验结果应构成确定因碱-二氧化硅反应导致过度膨胀应采取的预防措施的基础的一部分。请参阅指南 1778年 用于解释试验方法C1567的试验结果。

1.1 This test method permits detection within 16 days of the potential for deleterious alkali-silica reaction of combinations of cementitious materials and aggregate in mortar bars. The cementitious materials are composed of various proportions of hydraulic cement, pozzolans and slag cement. 1.2 The test results are only valid for the specific combinations of pozzolan, slag, and reactive aggregates tested. 1.3 This test is not suitable for evaluating the potential for deleterious reaction of combinations of hydraulic cement and aggregate (that is, in the absence of pozzolans or slag cement). 1.4 The text of this test method 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 test method. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 test method provides a means for evaluating the ability of pozzolans and slag cement to control deleterious internal expansion due to alkali-silica reaction when used with an aggregate intended for use in concrete. It is based on the Accelerated Test Method developed at the National Building Research Institute (NBRI) in the Republic of South Africa ( 1- 4 ) . 3 4.2 This test method has been developed for evaluating combinations of certain cementitious materials with a single aggregate source in a mortar of standard proportions. It yields an empirical result, which is utilized to compare to criteria within some specifications to accept or reject the combination of materials being evaluated for a particular application. Currently this method has no standard procedure for testing fine and coarse aggregates proposed for use in concrete together in a single batch of mortar, nor for varying the proportions of the constituent materials of the mortar beyond the relative proportions of the individual cementitious material constituents to each other, as the significance of these practices have not been determined nor have appropriate limits been established for evaluating the results of tests conducted using these modifications. 4.3 Different levels of pozzolan and slag cement may require testing to determine the amount required to reduce expansion to an acceptable level. Pozzolans and ground granulated blast-furnace slag may be tested separately or in combination. 4.4 It is recommended to test the same aggregate and hydraulic cement (without pozzolans and slag cement) using Test Method C1260 . 4.5 Results of tests conducted as described herein shall form a part of the basis for determining the precautions that shall be taken against excessive expansion due to alkali-silica reaction. Refer to Guide C1778 for the interpretation of the test results from Test Method C1567.