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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. The 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. The 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. The 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.
Asif Ali; Naveed Ahmad; Muhammad Adeel; Syed Bilal Ahmed Zaidi; Muhammad Sohail Jameel; Farsan Ali Qureshi; Waqas Haroon; Syeda Aamara Asif. Performance Evaluation of Bone Glue-Modified Asphalt. Advances in Materials Science and Engineering 2019, 2019, 1 -13.
AMA StyleAsif Ali, Naveed Ahmad, Muhammad Adeel, Syed Bilal Ahmed Zaidi, Muhammad Sohail Jameel, Farsan Ali Qureshi, Waqas Haroon, Syeda Aamara Asif. Performance Evaluation of Bone Glue-Modified Asphalt. Advances in Materials Science and Engineering. 2019; 2019 ():1-13.
Chicago/Turabian StyleAsif Ali; Naveed Ahmad; Muhammad Adeel; Syed Bilal Ahmed Zaidi; Muhammad Sohail Jameel; Farsan Ali Qureshi; Waqas Haroon; Syeda Aamara Asif. 2019. "Performance Evaluation of Bone Glue-Modified Asphalt." Advances in Materials Science and Engineering 2019, no. : 1-13.
Conventional binders cannot meet the current performance requirements of asphaltic pavements due to increase in traffic volumes and loads. Nanomaterials, due to their exceptional mechanical properties, are gaining popularity as bitumen modifiers to enhance the performance properties of the asphaltic concrete. Carbon Nanotubes (CNTs) are one of the most widely used nanomaterials because of their strength properties, light weight, small size, and large surface area. CNT addition results in improved substrate characteristics as compared to other modifiers. Due to high length to diameter ratio, dispersion of CNTs in bitumen is a complex phenomenon. In this study, dispersion of CNTs in bitumen was carried out using both dry and wet mixing techniques, the latter was selected on the basis of homogeneity of the resultant asphalt mixture. Scanning Electron Microscopy (SEM) was used to check the dispersion of CNTs in binder while Fourier Transform Infrared Spectroscopy (FTIR) was carried out to ensure the removal of solvent used for wet mixing. Conventional bitumen tests (penetration, softening point, and ductility), dynamic shear rheometer tests, rolling bottle tests, and bitumen bond strength tests were employed to check the improvement in the rheological and adhesion properties of bitumen while wheel tracker test was used to check the improvement in resistance against permanent deformation of asphalt mixtures after addition of CNTs. Results show that CNTs improved the higher temperature performance and permanent deformation resistance in both binder and mixtures. Improvement in bitumen–aggregate adhesion properties and moisture resistance was also observed.
Muhammad Faizan Ul Haq; Naveed Ahmad; Muhammad Ali Nasir; Jamal; Murryam Hafeez; Javaria Rafi; Syed Bilal Ahmed Zaidi; Waqas Haroon. Carbon Nanotubes (CNTs) in Asphalt Binder: Homogeneous Dispersion and Performance Enhancement. Applied Sciences 2018, 8, 2651 .
AMA StyleMuhammad Faizan Ul Haq, Naveed Ahmad, Muhammad Ali Nasir, Jamal, Murryam Hafeez, Javaria Rafi, Syed Bilal Ahmed Zaidi, Waqas Haroon. Carbon Nanotubes (CNTs) in Asphalt Binder: Homogeneous Dispersion and Performance Enhancement. Applied Sciences. 2018; 8 (12):2651.
Chicago/Turabian StyleMuhammad Faizan Ul Haq; Naveed Ahmad; Muhammad Ali Nasir; Jamal; Murryam Hafeez; Javaria Rafi; Syed Bilal Ahmed Zaidi; Waqas Haroon. 2018. "Carbon Nanotubes (CNTs) in Asphalt Binder: Homogeneous Dispersion and Performance Enhancement." Applied Sciences 8, no. 12: 2651.