Performance evaluation of nanosilica-modified asphalt binder

Continuous efforts are being made to enhance the performance of the pavements for which various modifiers and additives are being utilized. Lately, emphasis has been given to the use of sustainable materials to be used in pavement construction. The paper explores the use of nanosilica, which can be manufactured from industrial and agricultural wastes, as an asphalt modifier and evaluates its effect on high-temperature properties of VG-10 binder. The paper investigates the rutting potential of nanosilica-modified binders by using different rheological approaches. Nanosilica was used in three concentrations (0.5%, 1% and 3%). It was found that adding nanosilica to asphalt binder improves its rutting resistance. Results of all the rheological approaches showed that resistance to permanent deformation increases with the addition of nanosilica. Nanosilica-modified binders have high resistance to oxidative ageing. Nanosilica-modified binders exhibited good storage stability at high temperatures.


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  • Accession Number: 01726648
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 26 2019 4:02PM