Effects of asphalt cement rejuvenating agents : final report.

Details

• Creators:
  Carey, Donald E. ; Paul, Harold R.
• Corporate Creators:
  Louisiana. Department of Highways. Research and Development Section
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt cement
  • Recycling
  • Age hardening
  • Asphalt concrete
  • Temperature
  • Mix design
  • Viscosity
  • Testing
  • Mixing
  • Rejuvenating agents
• Publication/ Report Number:
  Research Report No. FHWA/LA-80/146
• Resource Type:
  Tech Report
• Geographical Coverage:
  Louisiana
• Corporate Publisher:
  Louisiana. Department of Highways. Research and Development Section
• Description:
  Louisiana's initial work in the recycling of asphaltic concrete pavements has demonstrated the need to obtain a base of knowledge in the area of rejuvenating age-hardened reclaimed asphalt cement. In this report, eight rejuvenating agents are examined with regard to the rejuvenator's effect, at various levels of addition, upon age-hardened asphalts; the subsequent aging characteristics of the rejuvenated asphalts; and the uniformity of mixing of the rejuvenating agents with asphaltic concrete mixes. Prediction equations yielding the proper quantity of rejuvenator to be added to an oxidized asphalt were examined. The rejuvenated asphalts followed anticipated patterns when tested for penetration at 77F, viscosity at 140F and 275F, and ductility at 77F. Generally, the rejuvenated asphalts demonstrated acceptable viscosity indices when subjected to the Thin Film Oven Test. Testing for uniformity of mixing in asphaltic concrete mixes proved inconclusive.
• Format:
  PDF
• Funding:
  Research Project No. 78-1B(B) ; Louisiana HPR 0010(004)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/21944/dot_21944_DS1.pdf
• File Type:
  [PDF - 1.69 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:dc6b83286459d485d5bbc17ea5a3394a95bdecfac7ad216842cb73d84572932124119c12add00298cb49b14979bc1dbab5c998a353ddd4caaed797602b992763