Optimization of Recycled Asphalt Pavement in Cold Emulsified Mixtures by Mechanistic Characterization

AbstractAs road infrastructure development has witnessed a steep increase across the globe, it is adversely affecting the environment attributable to unabated extraction and use of stone aggregates, a fast depleting natural resource. This situation has led to a serious ecological problem and requires alternative techniques for obtaining a sustainable pavement such as use of cold mix recycled asphalt pavement (RAP) technology with bitumen emulsion. Techniques like this have proved that they make a positive impact on both economic and environmental conditions. The main objective of this study is to evaluate emulsified mixtures incorporating RAP, which is a typical task attributable to the complexity by heterogeneity of materials. The study recommendations are on the basis of comparison of laboratory performance of emulsified mixtures: without RAP, as a control mixture; and with RAP, containing 30–80%. The study involved understanding the physical characterization of materials, followed by developing mix des...

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