Evaluation of the Performance of Asphalt Binder
Modified With Nanoparticles
Volume 1 - Issue 1
Shaban Ismael Albrka*
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- Department Civil Engineering, University of Near East, North Cyprus
*Corresponding author:
Shaban Ismael Albrka, Department Civil Engineering, University of Near East, North Cyprus
Received: January 22, 2018; Published: January 31, 2018
DOI: 10.32474/TCEIA.2018.01.000104
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Abstract
The physical and rheological properties of asphalt binder have been characterized using the conventional tests; (penetration,
ductility, and softening point) and dynamic shear rheometer (DSR). In this study, Calcium Carbonate nanoparticles (CaCO3) and
Aluminum hydro oxide (Al2O3) nanoparticles have been added to the base asphalt with a concentration of 3, 5 and 7% by the weight
of asphalt. It was found that the addition of CaCO3 and Al2O3 content has a significant effect on the physical properties of the asphalt,
as the penetration reduced up to 50% for modified asphalt with CaCO3 and 64% for modified asphalt with Al2O3. The softening point
of modified asphalt binders was increased up to 11 and 12% for both modifiers respectively compared with the base asphalt binder.
Also, the results showed that the storage stability of modified asphalt binders with CaCO3 and Al2O3 nanoparticles was less than
2.5 °C, which indicates that the asphalt binder and the modifiers having great compatibility. The evaluation of the complex shear
modulus of modified asphalt binders shows that the stiffness (G*) was increased with addition increase of both modifiers, and the
best performance of asphalt binder was found with the addition of 5% of both nanoparticles. As a result, the use of CaCO3 and Al2O3
nanoparticles can be considered a suitable alternative additive to modify asphalt binder.
Keywords: Calcium carbonate nanoparticles; Dynamic shear rheometer; Modified asphalt binder; Storage stability
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