Research Article Performance Evaluation of Bone Glue-Modified Asphalt AsifAli ,NaveedAhmad,MuhammadAdeel,SyedBilalAhmedZaidi , MuhammadSohailJameel,FarsanAliQureshi,WaqasHaroon,andSyedaAamaraAsif Department of Civil Engineering, University of Engineering and Technology Taxila, Taxila 47050, Pakistan Correspondence should be addressed to Asif Ali; asifce39@gmail.com Received 15 July 2019; Revised 13 October 2019; Accepted 15 October 2019; Published 3 November 2019 Academic Editor: Akbar Heidarzadeh Copyright © 2019 Asif Ali et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Asphalt is one of the primary materials that are extensively used by the pavement industry throughout the world. Its behaviour is highly dependent on the amount of loading and the level of temperature it is exposed to. Asphalt has been modified in the past with different additives to improve its high- or low-temperature properties. In Pakistan, temperature remains high for most of the time of the year; hence, asphalt binders with less susceptibility to higher temperatures are preferred for flexible pavements. Acids, polymers, fibers, and extenders have been used by the researchers to improve high-temperature performance of asphalt mixture. In the present study, a bio material derived from the animal waste, named as bone glue (BG), has been used with the 60/70 penetration grade binder in dosages of 3%, 6%, 9%, and 12% by weight of asphalt binder. e bone glue is produced from a sustainable source. It is a cost-effective and eco-friendly material. Moreover, it produces a durable and nonhazardous asphalt composite. e influence of addition of bone glue on asphalt binder was evaluated using different testing techniques which include consistency tests, rheological analysis, and adhesion tests. Furthermore, different performance tests were conducted on bone glue- modified asphalt mixtures. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analysis were carried out to ensure the homogeneity and proper mixing of bone glue in asphalt binder. e results from the tests reveal that bone glue stiffens the asphalt binder hence enhancing its high temperature performance. Bone glue dosage of 9% by weight of the binder was found to be the optimum dosage based on the rheological and performance analysis. 1.Introduction In Pakistan, most of the transport infrastructures consist of flexible pavements. Asphalt binder is the primary material used in the construction of flexible pavements. Asphalt binder being a viscoelastic material is quite sensitive to temperature and traffic loading. Asphalt behaves as an elastic solid under lower temperatures and higher loading fre- quencies, while at higher temperatures and low loading frequencies, it behaves as a viscous fluid. In Pakistan, one of the most common types of failure is rutting because of very high temperature during summer. Furthermore, the traffic loading from slow-moving loaded trucks increase the vis- cous behaviour of asphalt hence making it sensitive to rutting [1, 2]. In order to improve the performance of flexible pave- ments, pavement engineers are continuously in pursuit of advance and more efficient asphalt modifiers. ese modifiers enhance the durability and sustainability of pavements by improving high- and low-temperature per- formance. Flexible pavement performance can be enhanced through change in aggregate gradation and/or source [3, 4], modification of binder through polymers [5], styrene-bu- tadiene-styrene (SBS) [6, 7], crumb rubber [8, 9], Elvaloy [10], polyethylene [11–13], lime [14–17], and costly nano- materials [18, 19]. Poly phosphoric acid (PPA) has been extensively used as bitumen modifier and has been reported to improve high- and intermediate-temperature performance of asphalt [20]. Studies conducted on nanomaterials, such as nano-TiO 2 , nano-SiO 2 , and nano-ZnO, have shown that bitumen modified with nanoparticles results in significant im- provement in high-temperature performance of asphalt [21, 22], but it is considered as an expansive solution. Polymer-modified asphalt has been used in almost every part of the world, specifically in advanced countries. e Hindawi Advances in Materials Science and Engineering Volume 2019, Article ID 3157152, 13 pages https://doi.org/10.1155/2019/3157152