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To evaluate the effect of liquid styrene‐butadiene rubber (LSBR) on the rheological performance of bitumen, LSBRs with molecular weights of 20,000 (LA) and 50,000 g/mol (LB) are blended into the virgin bitumen. The rheological effect regarding LSBR content and the molecular weight of the bitumen was then conducted by dynamic shear rheometer (DSR) test and a bending beam rheometer (BBR) test, respectively...
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