The characteristics of hot mixed asphalt modified by nanosilica |
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| Authors: | Moein Hasaninia Farshad Haddadi |
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| Affiliation: | Department of Civil Engineering, Iran University of Science and Technology, Tehran, Iran |
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| Abstract: | The objective of this research is to investigate the characteristics of the hot mixed asphalt modified by 2%, 4%, 6%, and 8% nanosilica by weight of binder. Marshall stability, dynamic creep, and indirect tensile tests were used to study effects of nanosilica on performance characteristics of the mixtures. Results showed that nanosilica can improve Marshall stability, resilient modulus, indirect tensile strength, and fatigue life compared to unmodified mixtures. However, the tensile strength ratio parameter in the moisture sensitivity tests indicated a decrease in the resistance of the modified mixtures against moisture damage. |
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| Keywords: | Dynamic creep fatigue life hot mix asphalt moisture-induced damage nanosilica |
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