1.1 本试验方法旨在用于快速现场测定沥青混合料矿物骨料（VMA）中的空隙率。它提供了根据混合料的沥青含量及其最大比重（G）计算VMA的公式 毫米 ). 其目的是，在HMA工厂的质量控制（QC）操作期间，特别是在骨料比重高度可变的情况下，应将其用于快速“现场”测定VMA。 注1: 使用快速场法测定的VMA是已针对骨料吸收进行校正的VMA。 1.2 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。 1.3 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 各种用户希望在生产过程中表明热拌沥青（HMA）符合VMA规范。 4.2 测定VMA的标准实践要求测定骨料成分的体积比重。这是一个非常耗时的测试，不适合常规QC程序。 4.3 当混合物中使用的骨料来源具有高度可变的体积比重和参考平均体积比重（G 某人 )（例如，在混合设计中确定）用于计算HMA生产期间的VMA，可能会出现错误值。 4.4 混合物的最大比重试验（G 毫米 )是HMA工厂的常规QC测试。骨料成分的有效比重（G 东南方 )可以很容易地从这个测试中计算出来。然而，G 东南方 不考虑吸收的沥青量，这是准确测定VMA所需的。该方法提供了一种校正G的方法 东南方 考虑平均吸收沥青。如果在30天内随机获得的四次试验中，总（组合）骨料的吸水率变化超过0.4%，则不应使用本程序 %.

1.1 This test method is intended to be used for a rapid field determination of voids in mineral aggregate (VMA) of asphalt mixture. It provides equations for calculating the VMA based on the asphalt content of the mix and its maximum specific gravity (G mm ). It is intended that this should be used for the rapid “field” determination of VMA during quality control (QC) operations at HMA plants, particularly where the specific gravity of the aggregate is highly variable. Note 1: VMA determined using the rapid field method is VMA that has been corrected for aggregate absorption. 1.2 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. 1.3 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 Various users desire indication of compliance with VMA specifications for hot mix asphalt (HMA) during production. 4.2 The standard practice for determining VMA requires that the bulk specific gravity of the aggregate components be determined. This is a very time-consuming test, which is not suitable for routine QC procedures. 4.3 When an aggregate source used in the mix has a highly variable bulk specific gravity and a reference average bulk specific gravity (G sb ) (for example, as established in the mix design) is used to calculate VMA during HMA production, erroneous values may occur. 4.4 The test for maximum specific gravity of the mix (G mm ) is a routine QC test at HMA plants. The effective specific gravity of the aggregate components (G se ) can be easily calculated from this test. However the G se does not take into account the amount of asphalt absorbed, which is required for accurate VMA determination. This method provides a means to correct the G se to account for the average absorbed asphalt. This procedure should not be used if the percent water absorption of the total (combined) aggregates varies between four tests, randomly obtained over a 30 day period, by more than 0.4 %.