Improve the rheological properties of asphalt (60-70) by adding polypropylene


Abstract in English

Asphalt plays the role of envelope and bonding in asphalt gable, and is exposed to a range of changes that start from the stage of production of asphalt mosses to the stage of investment under the influence of traffic loads and weather factors. The aim of this research is to investigate the possibility of using polypropylene polymer to modify the properties of the asphalt binder and to increase its resistance to high temperatures and different climatic conditions by modifying the asphalt by adding polypropylene by (1, 2, 3, 4, 6, 8%) And perform traditional tests on modified asphalt samples . Using Thin film oven test RTFOT test to perform the short-term Aging on normal and modified asphalt samples, heat loss, residual Penetration and aging index, And conduct a structural composition test to determine asphalt compounds. The results of the study showed that the values of Penetration tend to decrease with the increase of the percentage of addition while the degree of Softening point. The results showed increased resistance of asphalt modified to the thermal conditions. The optimum percentage of polypropylene is 3% Loss on heat at the lowest level.

References used

Henglong Zhang, Zihao Chen, Guoqing Xu, Caijun Shi. Evaluation of aging behaviors of asphalt binders through different rheological indices . Fuel 221 (2018) 78–88
Samy Dekhli, Khedidja Ait Mokhtar, Ferhat Hammoum and Djaffar Si Bachir . Rheological Behaviour of Ethylene-Vinyl-Acetate (EVA) Modified Road Bitumen . Journal of Applied Sciences Volume 15 (3): 444-455, 2015
Maria A. Vargas , Miguel A. Vargas , Antonio Sanchez-Solis , Octavio Manero . Asphalt/polyethylene blends: Rheological properties, microstructure and viscosity modeling . Construction and Building Materials 45 (2013) 243–250

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