1.1 本试验方法包括通过多重应力蠕变和恢复（MSCR）试验确定沥青结合料的恢复百分比和不可恢复蠕变合规性。MSCR测试是在指定温度下使用动态剪切流变仪（DSR）进行的。 1.2 本标准适用于未老化的材料，根据试验方法老化的材料 D2872 （RTFOT），材料按照惯例老化 D6521 （PAV）和根据两种试验方法老化的材料 D2872 和实践 D6521 . 注1: 该测试方法的大部分开发工作是在根据测试方法老化的材料上进行的 D2872 （RTFOT）。 1.3 回收率百分比旨在提供一种方法来确定聚合物改性和未改性沥青粘合剂的弹性响应和应力依赖性。 1.4 以国际单位制表示的值应被视为标准值。本标准不包括其他计量单位。 1.5 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表格和图表中的注释和脚注）不应被视为本标准的要求。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。 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。 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。 =====意义和用途====== 5.1 该测试方法用于识别粘合剂中弹性响应的存在以及在两个不同应力水平下弹性响应的变化。 不可恢复的蠕变柔量已被证明是沥青粘合剂在重复载荷下抵抗永久变形的指标。 5.2 该试验方法也可用作测量沥青粘合剂弹性的其他试验方法的替代品，如试验方法 D5801 （韧性和韧性）试验方法 D6084/D6084M （弹性恢复）和试验方法 D7175 （DSR相位角）。 注2: 本标准产生的结果的质量取决于执行程序的人员的能力以及所用设备的能力、校准和维护。符合规范标准的机构 D3666 通常认为能够进行合格和客观的测试、取样、检验等。本标准的使用者应注意遵守规范 D3666 单独使用并不能完全保证可靠的结果。可靠的结果取决于许多因素；遵循规范的建议 D3666 或者一些类似的可接受的指南提供了一种评估和控制其中一些因素的方法。

1.1 This test method covers the determination of percent recovery and non-recoverable creep compliance of asphalt binders by means of multiple stress creep and recovery (MSCR) testing. The MSCR test is conducted using the dynamic shear rheometer (DSR) at a specified temperature. 1.2 This standard is appropriate for unaged material, material aged in accordance with Test Method D2872 (RTFOT), material aged in accordance with Practice D6521 (PAV), and material aged in accordance with both Test Method D2872 and Practice D6521 . Note 1: The majority of development work on this test method was performed on material aged in accordance with Test Method D2872 (RTFOT). 1.3 The percent recovery is intended to provide a means to determine the presence of elastic response and stress dependence of polymer-modified and unmodified asphalt binders. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 The text of this standard 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 standard. 1.6 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. 1.7 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. ====== Significance And Use ====== 5.1 This test method is used to identify the presence of elastic response in a binder and the change in elastic response at two different stress levels. Non-recoverable creep compliance has been shown to be an indicator of the resistance of an asphalt binder to permanent deformation under repeated load. 5.2 This test method is also useful as a surrogate for other test methods used to measure elasticity in asphalt binders such as Test Method D5801 (toughness and tenacity), Test Method D6084/D6084M (elastic recovery), and Test Method D7175 (DSR phase angle). Note 2: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.