1.1本规程涵盖了通过加压空气和高温加速沥青粘合剂老化（氧化）。这旨在模拟在役氧化老化期间沥青粘合剂中发生的变化类型，但可能无法准确模拟老化的相对速率。其旨在与试验方法D 2872（RTFOT）中的残留物一起使用，该方法旨在模拟植物老化。 注1:在试验方法D 2872（RTFOT）的烘箱调节过程中，改性沥青粘合剂可能会相分离或形成表皮；该残留物的后续测试结果可能无法代表改性沥青- 在现场条件下老化。PAV老化过程中也可能发生相分离或皮肤形成，或两者兼而有之。因此，这种做法可能不适用于某些改性沥青。 注释2 PAV尚未针对含有颗粒材料的材料进行验证。 1.2沥青粘合剂在使用过程中的老化受环境温度和空气压力以及混合物相关变量的影响，例如混合物的体积比例、混合物的渗透性、骨料的性质以及可能的其他因素。该调节过程旨在评估不同沥青粘合剂在选定的高温高压下的相对抗氧化老化能力，但不能考虑混合料变量，也不能提供在高温高压下的相对抗氧化老化能力- 使用条件。 1.3以国际单位制表示的数值应视为标准。 1.4本标准无意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。

1.1 This practice covers the accelerated aging (oxidation) of asphalt binders by means of pressurized air and elevated temperature. This is intended to simulate the type of changes which occur in asphalt binders during in-service oxidative aging but may not accurately simulate the relative rates of aging. It is intended for use with residue from Test Method D 2872 (RTFOT) which is designed to simulate plant aging. Note 1—Modified asphalt binders may phase separate or form skins during oven conditioning in Test Method D 2872 (RTFOT); the results from subsequent testing of this residue may not be representative of modified asphalts short-term aged under field conditions. Phase separation, or formation of skins, or both can also occur during PAV aging. Therefore, the practice may not be suitable for some modified asphalts. Note 2 PAV has not been validated for materials containing particulate materials. 1.2 The aging of asphalt binders during service is affected by ambient temperature and air pressure and by mixture-associated variables such as the volumetric proportions of the mix, the permeability of the mix, properties of the aggregates, and possibly other factors. This conditioning process is intended to provide an evaluation of the relative resistance of different asphalt binders to oxidative aging at selected elevated aging temperatures and pressures but cannot account for mixture variables or provide the relative resistance to aging at in-service conditions. 1.3 The values stated in SI units are to be regarded as the standard. 1.4 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.