Evaluation of aging behaviors of asphalt binders through different rheological indices

Probability and statistics in Civil Engineering: by G.N. Smith, Nichols Publishing Company, New York, NY, 1986, 244 pp.

Physical, rheological and chemical characterization of aging behaviors of thermochromic asphalt binder

The impact of bio-oil as rejuvenator for aged asphalt binder

The use of polymer-modified binders in asphalt mixtures has become more widespread due to their reduced thermal susceptibility and improved rutting and fatigue resistance. Nevertheless, their high cost limits their application, thus making the use of reclaimed polymers (RP) an interesting alternative for both reducing price and extending the service life of pavements. This paper; therefore, presents a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR), in order to facilitate their selection and extend the use of the bitumen. The differences in terms of melting point, mixing conditions, and maximum quantity of added polymer are analyzed. Moreover, their effect on the mechanical behavior of the asphalt binders and their stability with and without the use of additives is presented. According to the literature revision, the performance of the new binder is more influenced by the kind of polymer that was incorporated and the mixing conditions than by the base bitumen that was chosen, although rheological evaluation is needed to fully understand the modification mechanisms of the modified binder. In general terms, plastomers have a stronger effect in terms of increasing the stiffness of the bitumen in comparison with crumb rubber (elastomers), thus providing an improved rutting resistance. The joint use of polyethylene (plastomer) and crumb rubber (elastomer) can be an interesting option for its recycling potential and mechanical performance, although further study is needed to achieve stable bitumen across the entire range of temperatures; additives, such as maleic anhydride (MA), are commonly employed to improve the stability of the binder and enhance its characteristics, but their use could limit the economic benefits of using recycled materials.

Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review

Modification mechanism of asphalt binder with waste tire rubber and recycled polyethylene

Rheological properties of asphalts modified by waste tire rubber and reclaimed low density polyethylene

Effect of mineral filler on properties of warm asphalt mastic containing Sasobit

Microstructures and thermal aging mechanism of expanded vermiculite modified bitumen

Effect of polyphosphoric acid on physical properties, chemical composition and morphology of bitumen

Hongbin Xu

Papers

Modification mechanism of asphalt binder with waste tire rubber and recycled polyethylene

Rheological properties of asphalts modified by waste tire rubber and reclaimed low density polyethylene

Effect of mineral filler on properties of warm asphalt mastic containing Sasobit

Microstructures and thermal aging mechanism of expanded vermiculite modified bitumen

Effect of polyphosphoric acid on physical properties, chemical composition and morphology of bitumen