Influence of moisture on the migration of asphalt components and the adhesion between asphalt binder and aggregate

Healing Evaluation of Asphalt Mixtures with Polymer Capsules Containing Rejuvenator under Different Water Solutions

“…Meanwhile, the inherent capacity of noncapsule beams to recuperate their strength was observed to diminish upon the implementation of water solution treatment. The reason is that the intrusion of moisture leads to a reduction in cohesive force between asphalt layers and the adhesion stress between asphalt and aggregate [6,45,46]. The salt (NaCl) and alkali solution (NaOH) have an obvious adverse effect on the natural healing ability of asphalt concrete.…”

“…Due to superior performance in terms of traffic safety, driving stability, noise management, and moisture resistance, asphalt mixes are frequently employed in the building of motorways and urban roads [1,2]. However, asphalt pavement inevitably experiences microcracks and ageing owing to various unfavorable conditions such as abrupt temperature changes [3], ongoing traffic volume [4], unremitting air oxidation [5], water erosion [6], and intense UV exposure [7]. Inadequate and untimely maintenance of asphalt pavement can result in the exacerbation of microdamage, leading to the development of macrodamage.…”