Research on Multigrade Asphalt Cement (MAC) Application Based on Evotherm Warm-Mixed Asphalt (EWMA) Technology

Multigrade asphalt cement (MAC) is a liquefied binder material by chemical method and is widely applied in heavy traffic pavement environments. Its high construction temperature restricts its application in low temperature. The latest Evotherm product (Evotherm warm-mixed asphalt, EWMA) was added into MAC to produce a composite binder. Dense graded hot-mixed mixture AC-20 was selected as the studied aim, and Marshall method was used when the mixture was designed. MAC added in different dosages of EWMA (EWMA-MAC) was mixed with aggregate at 180°C and compacted at temperatures of 155°C, 140°C, and 125°C. The air voids of EWMA-MAC mixture with 0.7% EWMA compacted at 155°C and 140°C were very close to those of MAC mixture compacted at 170°C. Water stability, high and low temperature properties of EWMA-MAC mixture with 0.7% EWMA compacted at 155°C, 140°C, and 125°C were measured and discussed. The field tested results showed that EWMA technology can improve the workability of MAC mixture at low temperature and obtain good early pavement performance.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 41-49
  • Monograph Title: Advanced Characterization of Asphalt and Concrete Materials

Subject/Index Terms

Filing Info

  • Accession Number: 01537203
  • Record Type: Publication
  • ISBN: 9780784478554
  • Files: TRIS, ASCE
  • Created Date: Jul 22 2014 3:02PM