Experimental investigation on mineral and organic fibers effect on resilient modulus and dynamic creep of stone matrix asphalt and continuous graded mixtures in three temperature levels

Published Date
1 October 2015, Vol.95:232–242, doi:10.1016/j.conbuildmat.2015.07.146

Title 
Experimental investigation on mineral and organic fibers effect on resilient modulus and dynamic creep of stone matrix asphalt and continuous graded mixtures in three temperature levels

• Author 

• Mohammad Lavasani ^a,,
• Manouchehr Latifi Namin ^b,
• Homa Fartash ^a,

• aCivil and Environmental Engineering, Florida International University, 10555 W Flagler St, EC3715, Miami, FL 33174, USA
• bSchool of Civil Engineering, College of Engineering, University of Tehran, Enghelab Ave., Tehran, Iran

Received 16 January 2015. Revised 17 June 2015. Accepted 14 July 2015. Available online 20 July 2015.

Highlights

• •
  This study considered effects of two fibers on SMA and HMA mixtures properties.
• •
  HMA mixtures showed significantly higher resilient modulus than SMA.
• •
  Rutting potential of HMA mixtures was lower than SMA.
• •
  In higher temperatures more fiber content is required to improve properties.

Abstract

Two fiber types were used in this study to evaluate resilient modulus and dynamic creep behavior of stone matrix asphalt and continuous graded hot mixed asphalt versus various fiber contents in three levels of temperature. Generally, continuous graded mixtures presented better mechanical properties in both resilient modulus and dynamic creep tests. Fibers have shown great effect not only on asphalt drain-down, but on mechanical properties of samples. Considering the temperature effect, the higher the temperature is, the higher fiber content is required to improve mechanical characteristics of asphalt concrete.

Keywords

• HMA
• SMA
• Resilient modulus
• Dynamic creep
• Fiber
• Linear discriminant analysis.

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• ⁎ 
  Corresponding author.

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