Abstract

In the temperature range –10–30°С the influence of thermo-oxidative aging, frequency and deformation on the interfacial interaction according to the parameters K–B–G* and К–В–δ in asphalt mastics and modified mastics based on bitumen grade BND 60/90 has been investigated. The filler was introduced into bitumen in the ratio of 1/1 by weight. Active powder of discretely devulcanized rubber (APDDR) as a modifier was introduced in the ratio bitumen/APDDR = 87.5/12.5 by weight. It is shown that the modification of APDDR provides a greater thickness of adsorbed layer on the surface of filler particles under various conditions of external influences compared to mastic, and this thickness depends on the sequence of introduction of filler and APDDR.

中文翻译：

---

老化和改性对沥青玛蹄脂界面相互作用的影响

摘要

在 –10–30°С 温度范围内，根据沥青胶粘剂和基于沥青的改性胶粘剂中的参数K–B–G*和К–В– δ，热氧化老化、频率和变形对界面相互作用的影响BND 60/90 级已被调查。将填料以1/1的重量比引入沥青中。作为改性剂的离散脱硫橡胶(APDDR)的活性粉末以沥青/APDDR＝87.5/12.5的重量比引入。结果表明，与胶泥相比，APDDR 的改性在各种外部影响条件下，在填料颗粒表面提供了更大厚度的吸附层，并且该厚度取决于填料和 APDDR 的引入顺序。