Method for evaluating migration amount of old asphalt in old asphalt mixture

• Main Authors: SHAN JINGSONG, ZHANG DEZHAN, PEI FUCAI, LI ZEQUN, LI JINGZHOU, GE JUNFENG, LI QIANG, ZHAI WEI, DUAN TONGJUN, LIN ZHANSHENG, QIN HEWEI
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for evaluating the migration amount of old asphalt in an old asphalt mixture in order to solve the problem of lack of an existing asphalt migration amount detection technology and belongs to the technical field of old asphalt regeneration detection methods. The method comprises the following steps: preparing regular-shaped rock particles as a marker, mixing the marker with an old asphalt mixture, and taking the mass change of the marker before and after mixing in unit specific surface area as an evaluation method for representing the migration amount of the old asphalt. 为解决现有沥青迁移量检测技术的缺乏问题，属于旧沥青再生检测方法技术领域，本发明提供了一种评价旧沥青混合料中旧沥青迁移量的方法。其包括以下步骤：制作规则形状岩石颗粒作为标记物，通过与旧沥青混合料进行拌合，以标记物拌合前后单位比表面积的质量变化，作为表征旧沥青迁移量的评价方法。