Abstract
In order to establish a simplified viscosity evaluating method of high viscosity asphalt binders (HVABs), shear rate sweep test in the shear rate range of 1.25 × 10−6–1,250 s−1 was performed. Results showed that HVABs exhibited yield pseudo-plastic fluid behavior at 60 °C and the overlapped range of the first Newtonian region was 8 × 10−5–2 × 10−2 s−1. Based on the results, the simplified shear rate sweep test in the shear rate range of 0.001–0.1 s−1 was proposed and low shear viscosity at 0.01 s−1 (LSV0.01) was suggested as the viscosity evaluating indicator of HVABs, which exhibited both close values to zero shear viscosity and significant correlation with rutting resistance of porous asphalt.
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