1.1 本试验方法包括使用Micro Deval设备测试细骨料耐磨性的程序。 1.2 该方法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）不应被视为试验方法的要求。 1.3 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。 1.4 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。 1.5 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====== 5.1 Micro Deval磨损试验是一种对细骨料进行的试验，用于确定在水和磨料装料存在的情况下的磨损损失。许多骨料在潮湿时比干燥时更容易磨损，在本试验中用水会降低其抗降解性。当服务记录中没有足够的信息时，试验结果有助于评估细骨料的韧性/耐磨性。本试验适用于测量细骨料中页岩或页岩碳酸盐等软弱材料的含量。 在本试验中损失较低的材料在搬运、混合或放置过程中不太可能出现显著退化。水泥砂浆的干燥收缩与细骨料的微德瓦磨损损失之间存在关系，损失较大的材料会导致更高的干燥收缩。测试的发展以及与其他特性的关系已经公布。 3. , 4. , 5. 5.2 作为质量控制或质量保证过程的一部分，细骨料的微德瓦尔磨损试验可用于检测骨料来源生产的骨料的性能变化。 5.3 细骨料的微德瓦尔磨损试验与粗骨料的试验相比，与细骨料的硫酸镁稳固性损失具有显著相关性。细骨料的微量德瓦尔试验比硫酸盐安定性试验精度更高，速度更快，可以代替该试验。关于骨料选择的具体值的建议见附录。

1.1 This test method covers a procedure for testing fine aggregate for resistance to abrasion using the Micro-Deval apparatus. 1.2 The text of this method 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 test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in 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. 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 The Micro-Deval abrasion test is a test of fine aggregate to determine abrasion loss in the presence of water and an abrasive charge. Many aggregates are more susceptible to abrasion when wet than dry, and the use of water in this test incorporates this reduction in resistance to degradation. The test results are helpful in evaluating the toughness/abrasion resistance of fine aggregate subject to abrasion when adequate information is not available from service records. This test is suitable for measuring the amount of weak, soft material such as shale or shaley carbonate in fine aggregate. Materials that give a low loss in this test are unlikely to exhibit significant degradation during handling, mixing, or placing. There is a relationship between drying shrinkage of cement mortar and Micro-Deval abrasion loss of fine aggregate, with higher loss materials resulting in higher drying shrinkage. Descriptions of the development of the test and the relationship with other properties have been published. 3 , 4 , 5 5.2 The Micro-Deval abrasion test on fine aggregate is useful for detecting changes in properties of aggregate produced from an aggregate source as part of a quality control or quality assurance process. 5.3 The Micro-Deval abrasion test on fine aggregate, in contrast to the version on coarse aggregate, has a significant correlation with the magnesium sulfate soundness loss of fine aggregate. The Micro-Deval test on fine aggregate has better precision than the sulfate soundness test, is quicker, and may be used in place of that test. Advice on specific values for selection of aggregate will be found in the appendix.