Optimising the use of crumb rubber modified bitumen in seals and asphalt: Year 1 – 2014/15

The aim of this report is to present the opportunities available to Queensland for using recycled tyres (crumb rubber) technologies for sprayed seal and asphalt applications. The benefits of crumb rubber are presented and possible barriers to increased use of it in seals and asphalt are identified. Application of crumb rubber in seals and asphalt provides a high-value application of this recycled material. The available body of knowledge shows that the use of it in both asphalt and sprayed seals can provide improved field performance, specifically in terms of durability and cracking resistance. A growing number of road agencies are using crumb rubber technology to construct high performance sprayed seals and/or asphalt roads. Significant environmental benefits can also be achieved through this high value application of recycled waste tyres. It has been shown that crumb rubber can be applied to reduce road noise and CO2 emissions, as well as the increase use of non-renewable road construction materials. Currently, only a limited range of the crumb rubber technology available internationally is applied in Queensland. Estimates show that if it were more widely used in asphalt and sprayed seals in Queensland, a significant proportion of end-of-life tyres could be put to beneficial use. It is recommended that future research include working with industry to facilitate the transfer of a wider range of crumb rubber related seal and asphalt technologies to Queensland.

Language

  • English

Media Info

  • Pagination: 78p

Subject/Index Terms

Filing Info

  • Accession Number: 01835436
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Report/Paper Numbers: P31
  • Files: ATRI
  • Created Date: Feb 7 2022 2:18PM