Vol. 3 No. 01 (2022)

Influence of Laboratory Aging on the Engineering Properties of Dgams Containing Two Different Iraqi Asphalts

Al-Hadidy AI AI
Civil Engineering Department, University of Mosul, Mosul, Iraq
Tan Yi-Qiu
School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, P.R. China
Abdullah M. Rashed
Road Construction Department, Duhok Technical Institute, Duhok Polytechnic University, Kurdistan Region - Iraq

Published 2022-03-02


  • Aging,
  • Asphalt Binders,
  • Engineering Properties,
  • Moisture Damage

How to Cite

A.-H. A. AI, T. . Yi-Qiu, and A. . M. Rashed, “Influence of Laboratory Aging on the Engineering Properties of Dgams Containing Two Different Iraqi Asphalts ”, JoCEF, vol. 3, no. 01, pp. 12-17, Mar. 2022.


The influence of laboratory aging on Marshall stability (MS), Marshall quotient (MQ), indirect tensile strength (ITS) at 25 and 60° C, tensile strength ratio (TSR), resilient modulus (MR), modulus of rupture (MOR), cohesion, and aging index (AI) of dense graded asphalt mixes (DGAMs) containing Baiji (B) and Qayyarah (Q) Iraqi asphalt was examined. The results of DGAMs containing B and Q-asphalt showed 46% and 43%, and 37% and 24% higher MS, 132% and 99%, and 111% and 78% higher MQ, 24%, and 20%, and 14% and 10% higher ITS at 25° C, 4%, and 3% and 20%, and 13% higher ITS at 60° C, 27% and 19%, and 26% and 24% higher MOR at 0° C, and 25% and 18%, and 24% and 21% higher MOR at -10° C. For 4 and 8 d aging, TSR was 11% and 7%, and 4%, and 3% higher, MR 52% and 38%, and 38% and 24% higher, cohesion 73% and 58%, and 58% and 44% higher, and AI 1.74 and 1.58, and 1.56 and 1.44 times higher, respectively.


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