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LABORATORY EVALUATION OF MODIFIED ASPHALT WITH SBS POLYMER ON RUTTING RESISTANCE OF RECYCLED PAVEMENT MIXTURE

Authors: Hasan H. Joni --- Hussein H. Karim --- Haneen K. Yawar
Journal: KUFA JOURNAL OF ENGINEERING مجلة الكوفة الهندسية ISSN: 25230018 Year: 2019 Volume: 10 Issue: 3 Pages: 19-32
Publisher: University of Kufa جامعة الكوفة

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Abstract

This research investigates the influence of recycled mixture modified with styrene-butadienestyrene (SBS) polymer on rutting resistance. The reclaimed asphalt pavement (RAP) mixture percentages were used 10, 20 and 30% by weight of original mixture and one percentage of SBS polymer which was 5% by weight of asphalt cement. The moisture susceptibility and rutting were taken into consideration in this study. The results indicated that the recycled asphalt mixture containing on SBS polymer gives better moisture susceptibility and better rutting resistance. It is noted that indirect tensile strength ratio (ITSR) increases when adding SBS with 5% percentage polymer and reaching its maximum ratio 94.5% for 20% RAP and the rut depth decreases by 66.7% when adding SBS with 30% RAP content.

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