1.1本试验方法概述了使用旋转粘度计和温度控制热室（用于保持试验温度）测量38至260°C（100至500°F）沥青表观粘度的程序。 1.2以国际单位制表示的数值应视为标准。以厘米-克-秒（cgs）单位和英寸-磅单位给出的值仅供参考。 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和健康实践，并确定监管限制的适用性。 有关具体预防信息，请参阅。 ====意义和用途====== 本试验方法用于测量处理、混合或应用温度下沥青的表观粘度。 在本试验方法的条件下，或在本试验方法范围内的温度下，一些沥青可能表现出非牛顿行为。由于非牛顿粘度值不是绝对属性，而是反映特定测量系统内流体的行为，因此应认识到，通过本试验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。 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 38 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 SI units are to be regarded as the standard. The values given in centimetre gram second (cgs) units and inch-pound units are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. See for specific precautionary information. ====== Significance And Use ====== This test method is used to measure the apparent viscosity of asphalts at handling, mixing, or application temperatures. 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. Comparisons between non-Newtonian viscosity values should be made only for measurements made with similar conditions of temperature, shear rate, and shear history.