Design and Laboratory Investigation of the Stone Mastic Asphalt Performance in Iran

Asphalt concrete is predominantly used as a construction material for flexible pavements. Besides all of the advantages of flexible pavements, their resistant to heavy loading, especially in regions with hot weather conditions, is a matter of concern. In other words, low resistance to permanent deformation or so-called rutting would be the most important distress in such cases. Following the recent nationwide survey that has been carried out by Iranian Ministry of Roads and Transportation, rutting was indicated as the major distress for Iran’s highway system. The present study investigates design and laboratory evaluation of Stone Matrix/Mastic Asphalt (SMA) as an advantageous alternative mixture for construction of rutting resistant pavements. This type of mixture has been successfully used in many countries, e.g. European countries and United States of America. However, design of an appropriate SMA mixture based on the domestic technology and materials is still a challenge for highway administrations in different countries. Hence, this paper describes the main findings of the recent research activities in Iran to design four different SMA mixtures prepared with different nominal maximum aggregate sizes (NMAS) of 19 mm, 12.5 mm, 9.5 mm, and 4.75 mm. Uniaxial dynamic creep testing was carried out on different SMAs to evaluate the effect of NMAS and other factors on permanent deformation of the mixtures. Creep models were also extracted based on the results of the dynamic creep tests.

• Availability:
  • Find a library where document is available. Order URL: http://www.piarc.org/en/order-library/13949-en-Proceedings%20of%20the%20XXIVth%20World%20Road%20Congress,%20Mexico%20-%202011.htm
• Supplemental Notes:
  • Alternate title: Design of the stone mastic asphalt and laboratory investigation of its performance in Iran. Abstract reprinted with permission of the World Road Association – PIARC.
• Corporate Authors:

  World Road Association (PIARC)

  La Grande Arche, Paroi Nord, Niveau 5
  F-92055 La Defense Cedex,   France 
• Authors:
  • Fakhri, M
  • Kheiry, P T
  • Gholamzadeh, Z
• Conference:
  • 24th World Road Congress
  • Location: Mexico City , Mexico
  • Date: 2011-9-26 to 2011-9-30
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 17p
• Monograph Title: 24th World Road Congress Proceedings: Roads for a Better Life: Mobility, Sustainability and Development

Subject/Index Terms

• TRT Terms: Creep tests; Deformation; Flexible pavements; Rutting; Stone matrix asphalt
• Uncontrolled Terms: Permanent deformation
• Geographic Terms: Iran
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01519957
• Record Type: Publication
• ISBN: 2840602679
• Files: TRIS
• Created Date: Mar 26 2014 10:11AM