1.1 本试验方法概述了测量沥青表观粘度40至260的程序 °C[100至500 °F]，使用旋转粘度计和温度控制的热室保持试验温度。 1.2 以SI单位或cgs和英寸磅单位表示的值应单独视为标准值。每个系统中所述的值不一定完全相等；因此，为了确保符合标准，每个系统应独立使用，两个系统的值不得合并。 1.3 本标准并不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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 看见 10.6 了解具体的预防信息。 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。 =====意义和用途====== 5.1 该试验方法用于测量沥青在处理、混合或应用温度下的表观粘度。 5.2 在本试验方法的条件下或本试验方法范围内的温度下，某些沥青可能表现出非牛顿特性。由于非牛顿粘度值不是绝对财产，而是反映特定测量系统内流体的行为，因此应该认识到，使用这种测试方法进行的测量可能并不总是预测使用条件下的现场性能。 5.3 非牛顿粘度值之间的比较仅适用于在类似温度、剪切速率和剪切历史条件下进行的测量。

1.1 This test method outlines a procedure for measuring the apparent viscosity of asphalt from 40 to 260 °C [100 to 500 °F] using a rotational viscometer and a temperature-controlled thermal chamber for maintaining the test temperature. 1.2 The values stated in either SI units or cgs and inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 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. See 10.6 for specific precautionary information. 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. ====== Significance And Use ====== 5.1 This test method is used to measure the apparent viscosity of asphalts at handling, mixing, or application temperatures. 5.2 Some asphalts may exhibit non-Newtonian behavior under the conditions of this test method, or at temperatures within the range of this test method. Since non-Newtonian viscosity values are not absolute properties, but reflect the behavior of the fluid within the particular measurement system, it should be recognized that measurements made by this test method may not always predict field performance under the conditions of use. 5.3 Comparisons between non-Newtonian viscosity values should be made only for measurements made with similar conditions of temperature, shear rate, and shear history.