Skip to main content
Sister Publication Links
  • Middle East Foam & Polyurethane
  • UTECH Asia/PU China
  • UTECH Europe
  • UTECH Las Americas
Subscribe
  • My Account
  • Login
  • Subscribe
  • Ukraine
  • News
    • Asia
    • Americas
    • Europe
    • M & A
    • Financial results
    • Automotive
  • Data
  • Information
    • Country Overview
    • Market Sector overviews
    • Technical articles
    • Company profiles and strategies
  • Events
    • Exhibitions
    • Conferences
    • Webinars / Livestreams
    • Become a Speaker
  • Advertise
  • Contact Us
  • Issues
  • Subscribe
MENU
Breadcrumb
  1. Home
  2. News
January 10, 2023 02:12 PM

PU modifications improve the properties of ageing asphalt

Sarah Houlton
  • Tweet
  • Share
  • Share
  • Email
  • More
    Print

    Taiuyan, China – The asphalt used in road surfaces gradually degrades over time, and chemical modifications can be used to improve its ageing properties. Scientists at the North University of China have used both experimental techniques and molecular dynamics simulations to look at the ageing resistance of both thermoplastic polyurethane-modified asphalt and polyurethane/graphene oxide composite modified asphalt.

    The aim was to investigate both the molecular composition and self-healing ability of aged asphalt, with base asphalt and virgin asphalt used as a control. Ageing experiments were carried out using a rolling thin-film oven test, with analysis via multiple techniques including DSC, TGA and FT-IR studies. They also simulated the molecules and crack models of asphalt via molecular dynamics experiments.

    Their experiments showed that PU and graphene oxide modifications can increase the melting temperature of the asphalt, and improve the asphalt molecules’ migration ability. Importantly, it also enhanced the self-healing diffusion properties of the asphalt molecules, and reduced the energy and viscosity of aged asphalt. They concluded that nano and chemical synergistic modification does indeed have a positive effect on the properties of the asphalt as it ages.

    The work has been published in the journal Molecular Simulation.

    Recommended for You
    fypon mantel 800
    Fypon adds new PU mantels and shutters to its building products range
    Dry cleaning solvents recycled into urethanes
    Dry cleaning solvents recycled into urethanes
    grupo antolin headliner 800
    Grupo Antolin launches eco-friendly automotive headliner
    Latest Issue
    December 2022/January 2023
    Get the latest edition here
    View All Archives
    Get our newsletters

    Breaking news and in-depth coverage of essential topics delivered straight to your inbox.

    Subscribe today

    Register to access our archive of leading information on the polyurethanes industry.

    Subscribe now
    Connect with Us
    • Twitter
    • LinkedIn
    • Facebook
    • Youtube

    Follow us on social media for the latest polyurethanes industry news and event updates.

    Logo
    Contact Us

    Crain Communications
    11, Ironmonger Lane
    London
    EC2V 8EY
    United Kingdom

    Editorial
    Phone +44 (0) 20 3287 5935
    Email click to send

    Customer Service
    Phone +1 313 446 0450
    Email click to send

    Resources
    • Advertise with Us
    • Media Kit
    • Staff
    • Careers
    • Ad Choices Ad Choices
    • Sitemap
    Legal
    • Terms and Conditions
    • Privacy Policy
    • Privacy Request
    Copyright © 1996-2023. Crain Communications, Inc. All Rights Reserved.
    • Ukraine
    • News
      • Asia
      • Americas
      • Europe
      • M & A
      • Financial results
      • Automotive
    • Data
    • Information
      • Country Overview
      • Market Sector overviews
      • Technical articles
      • Company profiles and strategies
    • Events
      • Exhibitions
      • Conferences
      • Webinars / Livestreams
      • Become a Speaker
    • Advertise
    • Contact Us
    • Issues
    • Subscribe