Preparation and characterisation of modified reclaimed asphalt using nanoemulsion acrylate terpolymer

Abstract

Purpose -Investigate the best methods of utilisation of reclaimed asphalt pavements (RAP) in Egypt, in order 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. Also, improve the mechanical and physical characteristics and consequently improving the quality of asphalt paving, increasing the 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 Reclaimed Asphalt Pavement (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 PMA 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 reclaimed asphalt pavements in order 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 reclaimed asphalt pavements (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 Reclaimed Asphalt Pavement (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.

Development of Sustainable Asphalt Pavement Mixture Using Recycled concrete aggregate, Crumb Rubber and Waste Engine Oil

“…The results obtained from this test and ITSR (%) are shown in Table (12). The value of ITSR (%) for the modified mix containing 4% CR & 40% of RCA achieve the local and international specification requirements.…”

“…The effect of using the crumb rubber of three different percentages (3% -4% -5%) by weight of bitumen added to asphalt during mixing in behavior of asphalt mixture (AM) is investigated in this research. Various laboratory tests have been developed to predict and compare the mechanical and engineering properties of asphalt mixes under different loadings and environmental conditions [12]. Also for the predicting and evaluating the long-term performance of asphalt mixes, four mechanical properties were investigated which are the stability, fatigue resistance, permanent CV3 deformation and loss of stability.…”