Moisture sorption can significantly influence hydrothermal ageing and alter the chemical and rheological properties of bituminous mastics. Mineral filler particles are added to bituminous binders to form mastics with increased stiffness. The addition of fillers can considerably change the moisture sorption and the physico-chemical properties of binders by surface interactions and physical presence. This study aims to investigate the effect of filler type on the moisture-induced changes of bituminous mastics after wetting-drying cycles by means of sorption, rheological and infrared spectrometry tests. The results show that mineral fillers with higher diffusivity increase the overall capacity of mastics to absorb moisture, but at the same time allow for moisture desorption during drying. Nevertheless, it has been found that it is not the diffusivity properties but rather the bitumen and filler interactions that control the hydrothermal ageing of the mastics.

水分吸附会显着影响水热老化，并改变沥青胶泥的化学和流变特性。将矿物填料颗粒添加到沥青粘结剂中，以形成具有增加刚度的胶泥。填料的加入可通过表面相互作用和物理存在显着改变粘合剂的水分吸收和理化性质。这项研究旨在通过吸附，流变学和红外光谱测试研究填料类型对湿法干燥循环后水分引起的沥青胶粘剂变化的影响。结果表明，具有较高扩散性的矿物填料可提高胶泥吸收水分的整体能力，但同时又允许干燥过程中水分解吸。尽管如此，