Technical and Economical Evaluation of Cold Recycled Asphalt Using Emulsified Asphalt Binder through Response Surface Method and Developing an Optimized Mix Design

Document Type : Research Article

Authors

1 Department of civil engineering, University of Mohaghegh Ardabili, Ardabil, Iran

2 MSc,, Islamic Azad University, Ahar Branch, Ahar, Iran

3 Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran

Abstract

One of the common recycling methods of asphalt is the reuse of crushed asphalt with cement as a reinforcement of the base layer and its replacement in pavement layers. In this research, cold recycling of asphalt using emulsified asphalt binder has been investigated through the response surface method. In this regard, the technical and economic aspects of 15 fabricated samples of recycled cold asphalt mixtures using crushed asphalt materials, cationic emulsified binder and Portland cement (type II) were investigated. Marshall strength and flow, real specific weight and air void percentage of the mixture were determined by experiments. By performing an analysis of variance on the proposed models and determining the effective parameters, mathematical equations between independent and dependent parameters were developed and the effect of the parameters was investigated. Finally, an optimum mix design, which has 60% desirability, was suggested for cold asphalt recycling.

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References

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Amirkabir Journal of Civil Engineering
Volume 54, Issue 6
September 2022
Pages 2151-2172

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