Investigating effects of ethylene vinyl acetate and gilsonite modifiers upon performance of base bitumen using Superpave tests methodology
作者： Mahmoud Ameri , Ahmad Mansourian , Amir Hossein Sheikhmotevali
DOI: 10.1016/J.CONBUILDMAT.2012.04.137
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摘要: Abstract In this research study, relative performance of a series ethylene vinyl acetate (EVA) and gilsonite modified bitumens were evaluated in terms three main distress modes flexible pavement namely rutting, fatigue damage low temperature cracking. Seven unmodified tested characterized accordance with the Superpave criteria. The experimental tests performed dynamic shear rheometer (DSR), bending beam (BBR) rotational viscosity (RV). DSR test results for rutting showed that addition EVA increase parameter ( G ∗ /Sin( δ )) to base bitumen. decreases Sin( while increases bitumens. BBR creep stiffness S -value) Moreover, 2% 4% m -value
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