Use of Recycled Concrete in Hot Mix Asphalt and an ANN model for Prediction of Resilient Modulus

Ektas S., Karacasu M.

EKOLOJI, vol.21, pp.53-60, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21
  • Publication Date: 2012
  • Doi Number: 10.5053/ekoloji.2012.836
  • Journal Name: EKOLOJI
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.53-60
  • Keywords: Asphalt, concrete, reuse, sustainable environment, HIGH-DENSITY POLYETHYLENE, WASTE MATERIALS, BITUMEN
  • Eskisehir Osmangazi University Affiliated: Yes


Environmental wastes increase more and more as a result of household and industrial waste production and landfill sites for those wastes are decreasing progressively. Environmental pollution would also be prevented by use of these wastes in various construction materials or structures. In this study, the effects of recycled concrete (RC) on the properties of Hot Mix Asphalt (HMA) are investigated. For this purpose, RC was added to asphalt concrete in 10, 20,30 and 40 percent by weight of aggregate. The Marshall Stability (MS), flow resilient modulus (RM), and creep tests were applied to the specimens. MS and flows slightly decreased with the addition of RC. RM values for 10 percent RC was higher than the Control Specimen (CS) and the others. RM values decreased with increasing RC. RC specimens showed increases in terms of creep stiffness compared with CS. In addition, RM test results for different test conditions are evaluated by the Artificial Neural Network (ANN) method. The results of the ANN model of RM with a coefficient of determination of 0.98 conformed very closely to those obtained by the experimental results. Consequently it can be used as an aggregate in RC concrete and the modelling can be made by means of ANN. In this way instead of being an environmental pollution, concrete waste can be used as a construction material in the context of the sustainable environment