Abstract
With an increase in the price of asphalt binder, the asphalt paving industry has searched for its recycling resources. Recently, using tear-off asphalt roofing shingles in pavement systems have gained large amount of attention by transportation agencies. Beneficial use of tear-off shingle as road construction materials is an attractive option. In this laboratory study, in line with the Florida recycling regulation target, tear-off roofing shingles were used as additives in Hot-Mix Asphalt (HMA) ranged from 0% to 6% with 1% increment. Aged asphalt binder was extracted from the tear-off shingle and its physical properties were tested. Subsequently, mechanical characterization of the asphalt mixtures with respect to strength, moisture susceptibility, and rutting resistance at different RAS (Recycled Asphalt Shingle) ratios were evaluated. Lastly, the optimum mix design for the use of shingle in HMA has been established.
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