Moisture Susceptibility of Nano-Al₂O₃ and SiO₂ Modified Asphalt Mixtures

The aim of the study is to evaluate the performance of hot mix asphalt (HMA) against moisture with nano-materials according to Superpave mix design procedure. In this study, bitumen is modified by silica nano-powder (SiO₂NP) and aluminum oxide (Al₂O₃) nano-particle. Nano-materials are mixed with base bitumen at contents of 0.3% and 3% by nano-silica and aluminum oxide and 0.5 and 5% nano-silica and aluminum oxide by weight of bitumen, respectively. HMA is prepared with nano-modified bitumen at optimum binder contents (OBC). Moisture susceptibility of modified HMA is evaluated according to modified Lottman test procedure. OBCs are increased by modification. HMA samples modified by 0.3% SiO₂ and 3% Al₂O₃ is determined as high resistive to moisture compared to other mixtures.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 127-135
  • Monograph Title: Airfield and Highway Pavements 2019: Testing and Characterization of Pavement Materials

Subject/Index Terms

Filing Info

  • Accession Number: 01728551
  • Record Type: Publication
  • ISBN: 9780784482469
  • Files: TRIS, ASCE
  • Created Date: Jul 18 2019 3:02PM