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- W2023259348 abstract "Composite modified asphalts with nanoscale calcium carbonate (CaCO 3 ) and SBS were prepared by melt blending. Rolling thin film oven test (RTFOT) was carried out to study the aging property. The results demonstrate that both nano CaCO 3 and SBS show homogeneous dispersion in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Influence of nano CaCO 3 on the properties of SBS modified asphalts appears as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-deformation ability under low temperature of nano CaCO 3 /SBS modified asphalts improved significantly. The softening point of nano CaCO 3 /SBS modified asphalt decreases after aging, in contrast to that of the base asphalt, which can be ascribed to the different rheological peoperties between nano CaCO 3 /SBS modified asphalt and the base asphalt. Compared with that of SBS modified asphalt, the anti-ageing property of nano CaCO 3 /SBS modified asphalts improved significantly. This indicates that nano structure of CaCO 3 in modified asphalt can prevent oxygen from diffusing and permeating in matrix and the thermo-oxidative ageing of base asphalt and SBS slows down." @default.
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- W2023259348 date "2011-06-01" @default.
- W2023259348 modified "2023-09-26" @default.
- W2023259348 title "Preparation and Aging Property of Nannocomposite CaCO<sub>3</sub>/SBS Modified Asphalts" @default.
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- W2023259348 doi "https://doi.org/10.4028/www.scientific.net/msf.688.213" @default.
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