Title: Investigation the effect of newly used polymer modified bitumen on the performance of hot mix asphalt containing reclaimed asphalt pavement

Authors (ORCID): CHAFAT, O.H. (0000-0002-1566-5983), AL-GHURAB, S.B., AL-HUMEIDAWI, B.H.

Keywords: creep compliance, rutting, recycling old pavement, novolac, hexamine

Abstract: The current research focuses on investigating the effect of using reclaimed asphalt pavement (RAP) on performance of hot mix asphalt (HMA) prepared with polymer modified bitumen (PMB) binder. This PMB used for the first time with HMA contained RAP. The mechanical properties and performance of HMA were assessed using several standard tests including Marshall, indirect tensile strength, creep compliance, and wheel track test. The RAP replacement was conducted up to 70% of total aggregate in HMA with an increment of 10%. The results of investigation showed, that the use of PMB binder prepared by addition novolac (phenol formaldehyde solid resin) and hexamine to conventional bitumen, significantly improved the performance of HMA contained RAP. Also, the optimum percentage of RAP replacement was found to be 50% of total aggregate in HMA. For this level of replacement, the rut depth reduced up to 38% of its original value.

DOI: 10.22630/PNIKS.2021.30.3.38

APA style references: Chafat, O.H., Al-Ghurab, S.B. & Al-Humeidawi, B.H. (2021). Investigation the effect of newly used polymer modified bitumen on the performance of hot mix asphalt containing reclaimed asphalt pavement. Scientific Review Engineering and Environmental Sciences, 30 (3), 451-463. doi: 10.22630/PNIKS.2021.30.3.38

APA style citation in text: The first time citation in text: (Chafat, Al-Ghurab & Al-Humeidawi, 2021), next citation: (Chafat et al., 2021)

Chicago style references: Chafat, Osamah H., Sahar B. Al-Ghurab, Basim H. Al-Humeidawi. "Investigation the effect of newly used polymer modified bitumen on the performance of hot mix asphalt containing reclaimed asphalt pavement." Scientific Review Engineering and Environmental Sciences, 93 ser., vol. 30, no 3, (2021): 451-463. doi: 10.22630/PNIKS.2021.30.3.38.

Chicago style citation in text: (Chafat, Al-Ghurab, and Al-Humeidawi 2021)

Bibtxt style references: Bibtxt_utf8_93art7en.bib

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