Application of waste materials in asphalt mixtures

This research focuses on the assessment of the utilization of some of the waste materials including Recycled Construction Aggregate (RCA), Glass, plastic, and rubber in Dense Graded Asphalt (DGA) mixture, and it aims to propose a mixture with proper response to traffic loads and environmental conditions as well as appropriate resistance to rutting, cracking, and weathering. In this report, a critical and comprehensive literature review about the performance of the asphalt mixture incorporating selected waste materials is provided. Moreover, this report includes a brief description of the relevant tests commonly specified to provide confidence of material suitability for the intended application as well as the results of these tests. Based on these tests, it is concluded that these waste materials have serious shortcomings in accounting for the asphalt mixtures components. They are also unable to account for designing asphalt mixture individually, and therefore, it is required that combination of some waste materials in certain percentages be considered in designing the asphalt mixture. One of the goals of the proposed research is to determine the optimum percentage of RCA and glass in the mixture, and also to investigate the influence of the application of rubber and plastic in binder characteristics. This will be done through a series of preliminary and primary tests to evaluate the properties of individual components of asphalt mixtures and the volumetric properties of the mixture. The information and data collected from these tests will be used to select the adequate samples for further assessment through advanced tests such as resilient modulus test. Since the variability in the behaviour of RCA used in different construction projects indicates the variability in RCA composition. Therefore, this research investigates the composition and variability of RCA through classification of aggregate samples collected from a recycling centre in Sydney over one year.

Language

  • English

Media Info

  • Pagination: 1 file

Subject/Index Terms

Filing Info

  • Accession Number: 01688686
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 17 2018 12:24PM