1.1 本标准涵盖的粘度-温度图是绘制数据的方便方法，用于估算有限范围内任何温度下沥青粘合剂的粘度。相反，该图表可用于确定达到所需粘度的温度。 1.2 该图表适用于沥青粘合剂和从实验室老化试验中回收或从路面中提取的沥青。 1.3 该图表基于粘度-温度关系，可以使用任何适当的单位集绘制。 为方便起见，提供了基于传统和国际单位制的图表。 1.4 图表的范围足以用于屋顶沥青。 1.5 该图表的范围足以用于粘度超过0.01 Pa·s（10厘泊）的沥青粘合剂。 1.6 以国际单位制或英寸-磅单位表示的值应单独视为标准值。每个系统中所述的值可能不是完全等效的；因此，每个系统都应独立使用。将两个系统的值结合起来可能会导致不符合标准。 注1: 改性沥青粘合剂可能不会给出线性图。 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。

1.1 The viscosity-temperature chart covered by this standard is a convenient means of plotting data for estimating the viscosity of asphalt binders at any temperature within a limited range. Conversely, the chart may be used to ascertain the temperature at which a desired viscosity is attained. 1.2 The chart is suitable for asphalt binders and for asphalts recovered from laboratory aging tests or extracted from pavements. 1.3 The chart is based on a viscosity-temperature relationship that can be plotted using any appropriate set of units. For convenience, charts based on both conventional and SI units are provided. 1.4 The range of the chart is sufficient for roofing asphalts. 1.5 The range of the chart is sufficient for asphalt binders whose viscosity exceeds 0.01 Pa·s (10 centipoise). 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. Note 1: Modified asphalt binders may not give a linear plot. 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.