Design, construction and performance of stone matrix asphalt (SMA) - field test section

Several factors such as ever increasing traffic volume and heavier axle loads, movement of slow moving vehicles, channelized traffic and excessive vehicle loading coupled with inadequate resources for maintenance and extreme climatic conditions in which flexible pavements operate in India are responsible for causing frequent and extensive deterioration of roads, particularly in urban areas. To counter act this process and to minimize such damage, several measures viz. use of rut resistance mixes, such as Stone Matrix Asphalt (SMA), Open Graded Frictional Course (OGFC) and Modified Bituminous Binders/Mixes, etc., have been applied and found effective. SMA is a gap graded bituminous mixtures that maximizes coarse aggregates' content in the mix, which provides better stone-on-stone contact. Additives are generally used in SMA mix to prevent drain down of binder. In the case study being reported upon, Delhi quartzite, cellulose fiber and VG-30 (60/70 penetration grade) bitumen were used and both drum mix and batch mix type hot mix plants were used for production of SMA mixtures and drain down values, Hamburg wheel tracking test and tensile strength ratio (TSR) values were determined.

• Supplemental Notes:
  • Abstract reprinted with permission from the publisher.
• Authors:
  • Kamaraj, C
  • Jain, P K
  • Sharma, B M
  • Gangopadhyay, S
• Publication Date: 2013

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 12-25
• Serial:
  • Highway Research Journal
  • Volume: 6
  • Issue Number: 1
  • Publisher: Indian Roads Congress

Subject/Index Terms

• TRT Terms: Coarse aggregates; Field tests; Flexible pavements; Measurement of specific phenomena; Pavement design; Pavement performance; Ruts (Pavements); Stone matrix asphalt; Tensile strength
• Identifier Terms: Hamburg Wheel Rut Tester
• Geographic Terms: India
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 01496150
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 24 2013 9:34AM