Relationship between colloidal index and chemo-rheological properties of asphalt binders modified by various recycling agents

Molecular dynamics simulation and experimental validation on the interfacial diffusion behaviors of rejuvenators in aged bitumen

“…Their chemical and physical properties are summarized in Table 2. It should be mentioned that the selection basis of rejuvenators is the classification list from the American National Centre of Asphalt Technology (NCAT) [30], in which the rejuvenators are divided into five groups: paraffinic oils, aromatic extracts, naphthenic oils, triglycerides & fatty acids, and tall oils [31]. In addition, the bio-oil rejuvenator selected in this study is rapeseed oil derived from a transesterification process.…”

Chemical characterizations and molecular dynamics simulations on different rejuvenators for aged bitumen recycling

“…have been proved to be efficient in improving the low-temperature cracking resistance, fatigue life, workability, and durability of aged bitumen and mixture [16,17]. The rejuvenation efficiency of rejuvenators on the rheological and mechanical performance of aged bitumen strongly depends on the rejuvenator type and components [14,18]. To this end, the American National Center for Asphalt Technology (NCAT) categorized the rejuvenators into five groups based on their chemical characteristics and material resources, including the paraffinic-oils, naphthenic-oils, aromatic extracts, triglycerides/fatty acids, and tall oils [14].…”

“…To this end, the American National Center for Asphalt Technology (NCAT) categorized the rejuvenators into five groups based on their chemical characteristics and material resources, including the paraffinic-oils, naphthenic-oils, aromatic extracts, triglycerides/fatty acids, and tall oils [14]. Hamzeh et al detected the distinct difference in chemical properties between five recycling agents and found that the rejuvenation efficiency on mechanical properties and moisture susceptibility significantly depends on the recycling agents [8,18].…”

Experimental Study on Creep–Recovery Behavior of Polyphosphoric Acid (PPA) Modified Asphalt Binders under Multiple Factors

“…It is possible to explain the change of rheological parameters in terms of colloidal structure [ 59 , 60 ]. The asphalt binder is a colloidal material with a stable structure, in which asphaltene is surrounded by resin as a dispersed phase disperses in light components [ 58 ].…”