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利用建立老化动力学模型来分析和研究再生沥青的抗老化性能。结合鞍山路面维修工程,选取有代表性的旧料,通过苯抽提出废旧沥青,分析技术指标,通过再生剂再生,再考察再生沥青在不同温度,不同老化时间的老化情况,并对老化后软化点进行研究。以老化后软化点为参数建立老化动力学模型。以软化点的变化为参数可以较好地表征再生沥青的动力学过程,求得正确动力学参数。鞍山再生沥青属于一级动力学反应。与辽河AH-90#沥青[1]横向对比,证明再生沥青抗老化性能[2]的可靠性。
Aging dynamics model was used to analyze and study the aging resistance of recycled asphalt. Combined with the Anshan pavement maintenance project, select the representative of the old material, benzene waste extracted by the asphalt, technical indicators, through the regenerant regeneration, and then examine the regeneration of asphalt at different temperatures and aging time aging, and softening after aging Point to study. Aging kinetics model was established with aging softening point as a parameter. Taking the change of softening point as parameter, the dynamic process of reclaimed asphalt can be well characterized and the correct kinetic parameters can be obtained. Anshan renewable bitumen is a dynamic reaction. Compared with the Liaohe AH-90 # Asphalt [1], the reliability of the aged asphalt [2] is proved.