A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Characterization of Nano-Alumina Modified Asphalt Binders and Mixtures
Asphalt binder modification is a popular technique to enhance the performance of asphalt pavements. Nano-materials are also gaining popularity as modifiers in asphalt binders. In this study, nano-alumina was used as a modifier at contents of 2, 4, 6, and 8% by weight. The modified binders were characterized using conventional tests including specific gravity, softening point, and rotational viscosity. Rheological tests included temperature sweep, frequency sweep, and multiple stress creep and recovery (MSCR). The outcomes showed that phase angle (δ) decreased and complex modulus (G*) increased with an increase in nano-alumina content. Storage and loss moduli of nano-alumina modified binders also improved for the different frequencies tested. MSCR test showed that modified binders had lower non-recoverable creep compliance and higher recovery than the control binder. The study also included evaluation of stiffness characteristics of asphalt mixtures fabricated with nano-alumina modified binders. The stiffness modulus results agreed with the rheological results.
Characterization of Nano-Alumina Modified Asphalt Binders and Mixtures
Asphalt binder modification is a popular technique to enhance the performance of asphalt pavements. Nano-materials are also gaining popularity as modifiers in asphalt binders. In this study, nano-alumina was used as a modifier at contents of 2, 4, 6, and 8% by weight. The modified binders were characterized using conventional tests including specific gravity, softening point, and rotational viscosity. Rheological tests included temperature sweep, frequency sweep, and multiple stress creep and recovery (MSCR). The outcomes showed that phase angle (δ) decreased and complex modulus (G*) increased with an increase in nano-alumina content. Storage and loss moduli of nano-alumina modified binders also improved for the different frequencies tested. MSCR test showed that modified binders had lower non-recoverable creep compliance and higher recovery than the control binder. The study also included evaluation of stiffness characteristics of asphalt mixtures fabricated with nano-alumina modified binders. The stiffness modulus results agreed with the rheological results.
Characterization of Nano-Alumina Modified Asphalt Binders and Mixtures
Lecture Notes in Civil Engineering
Singh, Dharamveer (editor) / Vanajakshi, Lelitha (editor) / Verma, Ashish (editor) / Das, Animesh (editor) / Nazir, Pubali (author) / Choudhary, Rajan (author) / Kumar, Abhinay (author) / Kumar, Ankush (author)
Proceedings of the Fifth International Conference of Transportation Research Group of India ; Chapter: 20 ; 275-287
2022-05-14
13 pages
Article/Chapter (Book)
Electronic Resource
English
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