Microstructure Index of Hot Mix Asphalt

Digital image processing technique is used to quantify the impact of aggregate gradation and compaction method on air voids distribution and aggregate orientation and distribution. The air voids distribution was found to be sensitive to water permeability than traditional volume indexes. A more orizontal orientation was found for the aggregate particles compacted in the Superpave gyratory compactor. On the other hand, aggregate particles appear to have more of a random distribution in vibratory compactor samples. Aggregate distribution was found to be sensitive to the aggregate gradation and type of compaction. Based on digital image process technique, the authors analyze the microstructure of hot mix asphalt, and present a series of microstructure parameters including the air voids distribution, aggregate distribution and major axis angle distribution. The result illustrate that the microstructure indexes can evaluate the internal structure difference of hot mix asphalt.

• Record URL:
  https://doi.org/10.1061/47634(413)2
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784476345
• Supplemental Notes:
  • Copyright © 2011 ASCE
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Lv, Yue-jing
  • Zhang, Lei
  • Zhou, Xing-Lin
• Conference:
  • GeoHunan International Conference 2011
  • Location: Hunan , China
  • Date: 2011-6-9 to 2011-6-11
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; Tables;
• Pagination: pp 9-16
• Monograph Title: Road Materials and New Innovations in Pavement Engineering

Subject/Index Terms

• TRT Terms: Aggregate gradation; Air voids; Compaction; Hot mix asphalt; Microstructure; Mix design
• Uncontrolled Terms: Digital images
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 01348077
• Record Type: Publication
• ISBN: 9780784476345
• Files: TRIS, ASCE
• Created Date: Aug 8 2011 2:26PM