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Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Abdelrahman Moukhtar Naser (Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt)
Hamada Abd El - Wahab (Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt)
Mohamed Abd El Fattah Moustafa El Nady (Department of Production, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt)
Abdelzaher E. A. Mostafa (Department of Civil Engineering, Faculty of Engineering at Mataria, Helwan University, Cairo, Egypt)
Long Lin (Department of Colour Science, University of Leeds, Leeds, UK)
Ahmed Galal Sakr (Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 12 August 2019

Issue publication date: 21 August 2019

Abstract

Purpose

This paper aims to investigate the best methods of utilisation of reclaimed asphalt pavements (RAP) in Egypt, to determine the effect of using 100% RAP instead of using virgin aggregates and asphalt; investigate the effect of thermoplastic elastomer polymer as asphalt modifier; and also improve the mechanical and physical characteristics and consequently improving the quality of asphalt paving, increasing service life of asphalt-paving and reducing costs.

Design/methodology/approach

Nano acrylate terpolymers were prepared with different % (Wt.) of and were characterised by Fourier transforms infrared (FTIR), for molecular weight (Mw), by thermo gravimetric analysis (TGA) and by transmission electron microscopy (TEM). A 4% (Wt.) of the prepared nanoemulsion terpolymer was mixed with virgin asphalt as a polymer modifier, to improve and reuse of the RAP. The modified binder was tested. The tests conducted include penetration, kinematic viscosity, softening point and specific gravity. Application of Marshall mix design types; hot mix asphalt (HMA), warm mix asphalt (WMA) and cold in place recycled (CIR). Four different mix designs used; control mix contained virgin asphalt by HMA, and the other three mix designs were polymermodified asphalt sample by HMA, WMA and CIR.

Findings

The research results showed that using 4 Wt.% of the prepared nanoemulsion terpolymer to produce hot mix asphalt (HMA) and warm mix asphalt (WMA) achieved higher stability compared to the control mix and cold in place recycled (CIR).

Research limitations/implications

This paper discusses the preparation and the characterisation of nanoemulsion and its application in RAPs to enhance and improve the RAP quality.

Practical implications

Nano-acrylate terpolymer can be used as a new polymer to modify asphalt to achieve the required specifications for RAP.

Originality/value

According to the most recent surveys, Europe produced 265 tonnes of asphalt for road applications in 2014, while the amount of available RAP was more than 50 tonnes. The use of RAP in new blended mixes reduces the need of neat asphalt, making RAP recycling economically attractive.

Keywords

Acknowledgements

The authors would like to thank the Management Office of Arab Consulting Engineers for their help and support which have been essential to achieve the work reported in this paper.

Citation

Naser, A.M., Abd El - Wahab, H., Moustafa El Nady, M.A.E.F., E.A. Mostafa, A., Lin, L. and Sakr, A.G. (2019), "Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer", Pigment & Resin Technology, Vol. 48 No. 5, pp. 363-374. https://doi.org/10.1108/PRT-08-2018-0080

Publisher

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Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited