Effect of Micron Fly Ash and Nano Calcium Carbonate on Properties of Styrene-Butadiene-Styrene Copolymer Modified Asphalt

Abstract:

Composite modified asphalts with micron fly ash/SBS and nanocalcium carbonate (nanoCaCO₃)/ SBS were prepared respectively by melt blending. The ageing properties and physical properties of micron fly ash/SBS and CaCO₃/SBS modified bitumen were investigated. The results demonstrate that micron fly ash/SBS modified bitumen exhibited an increasing softening point, a decreasing penetration and a decreasing ductility. Compared with that of SBS modified bitumen, the anti-aging property of the micron fly ash/SBS modified bitumen becomes worse. Effects of the nanoCaCO₃ on the properties of SBS modified asphalt appear as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-aging property of the CaCO₃/SBS modified asphalt was better than that of the SBS modified asphalt.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 1169-1172
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.1169
• Online since: April 2014
• Authors: De Jie Zhou, Nian Feng Han
• Keywords: Micron Fly Ash, Modified Asphalt, Nanocalcium Carbonate, SBS

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