Rheological evaluation of shortand long-term performance for warm mix asphalt (WMA) binders

Mohammed Sadeq; Eyad Masad; Hussain Al-Khalid; Okan Sirin; Dallas Little

doi:10.1007/978-94-017-7342-3_11

Rheological evaluation of shortand long-term performance for warm mix asphalt (WMA) binders

Mohammed Sadeq^*, Eyad Masad, Hussain Al-Khalid, Okan Sirin, Dallas Little

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Warm-mix asphalt (WMA) additives are environmentally friendly and cost-effective products that lower the viscosity of bituminous binders to allow reduction of mixing and compaction temperatures in asphalt mix production. In this study, two WMA additives were used; Sasobit® and Advera®. Both were mixed in the lab with unmodified 60/70 Pen and modified PG 76-22 binders. Strain oscillation and viscosity measurement tests were performed to determine the rheological properties of the binder with and without WMA additives. Different ageing processes were performed in this study; half and full short-term ageing using the Rolling Thin Film Oven (RTFO) procedure, and long-term ageing using the Pressurized Ageing Vessel (PAV) procedure. Test results have shown that the addition of Sasobit® increased the stiffness of both binders and changed PG grade by one unit up (6 °C PG grade). Also, Sasobit® presented better rutting resistance in modified and unmodified binders than Advera®, while both WMA additives decreased the fatigue cracking resistance. Multiple Stress Creep Recovery (MSCR) test was also conducted on both unaged and RTFO aged binders. Modified binder.

Original language	English
Pages (from-to)	129-139
Number of pages	11
Journal	RILEM Bookseries
Volume	11
DOIs	https://doi.org/10.1007/978-94-017-7342-3_11
Publication status	Published - 26 Sept 2016
Externally published	Yes

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title = "Rheological evaluation of shortand long-term performance for warm mix asphalt (WMA) binders",

abstract = "Warm-mix asphalt (WMA) additives are environmentally friendly and cost-effective products that lower the viscosity of bituminous binders to allow reduction of mixing and compaction temperatures in asphalt mix production. In this study, two WMA additives were used; Sasobit{\textregistered} and Advera{\textregistered}. Both were mixed in the lab with unmodified 60/70 Pen and modified PG 76-22 binders. Strain oscillation and viscosity measurement tests were performed to determine the rheological properties of the binder with and without WMA additives. Different ageing processes were performed in this study; half and full short-term ageing using the Rolling Thin Film Oven (RTFO) procedure, and long-term ageing using the Pressurized Ageing Vessel (PAV) procedure. Test results have shown that the addition of Sasobit{\textregistered} increased the stiffness of both binders and changed PG grade by one unit up (6 °C PG grade). Also, Sasobit{\textregistered} presented better rutting resistance in modified and unmodified binders than Advera{\textregistered}, while both WMA additives decreased the fatigue cracking resistance. Multiple Stress Creep Recovery (MSCR) test was also conducted on both unaged and RTFO aged binders. Modified binder.",

author = "Mohammed Sadeq and Eyad Masad and Hussain Al-Khalid and Okan Sirin and Dallas Little",

note = "Publisher Copyright: {\textcopyright} RILEM 2016.",

year = "2016",

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day = "26",

doi = "10.1007/978-94-017-7342-3_11",

language = "English",

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T1 - Rheological evaluation of shortand long-term performance for warm mix asphalt (WMA) binders

AU - Sadeq, Mohammed

AU - Masad, Eyad

AU - Al-Khalid, Hussain

AU - Sirin, Okan

AU - Little, Dallas

PY - 2016/9/26

Y1 - 2016/9/26

N2 - Warm-mix asphalt (WMA) additives are environmentally friendly and cost-effective products that lower the viscosity of bituminous binders to allow reduction of mixing and compaction temperatures in asphalt mix production. In this study, two WMA additives were used; Sasobit® and Advera®. Both were mixed in the lab with unmodified 60/70 Pen and modified PG 76-22 binders. Strain oscillation and viscosity measurement tests were performed to determine the rheological properties of the binder with and without WMA additives. Different ageing processes were performed in this study; half and full short-term ageing using the Rolling Thin Film Oven (RTFO) procedure, and long-term ageing using the Pressurized Ageing Vessel (PAV) procedure. Test results have shown that the addition of Sasobit® increased the stiffness of both binders and changed PG grade by one unit up (6 °C PG grade). Also, Sasobit® presented better rutting resistance in modified and unmodified binders than Advera®, while both WMA additives decreased the fatigue cracking resistance. Multiple Stress Creep Recovery (MSCR) test was also conducted on both unaged and RTFO aged binders. Modified binder.

AB - Warm-mix asphalt (WMA) additives are environmentally friendly and cost-effective products that lower the viscosity of bituminous binders to allow reduction of mixing and compaction temperatures in asphalt mix production. In this study, two WMA additives were used; Sasobit® and Advera®. Both were mixed in the lab with unmodified 60/70 Pen and modified PG 76-22 binders. Strain oscillation and viscosity measurement tests were performed to determine the rheological properties of the binder with and without WMA additives. Different ageing processes were performed in this study; half and full short-term ageing using the Rolling Thin Film Oven (RTFO) procedure, and long-term ageing using the Pressurized Ageing Vessel (PAV) procedure. Test results have shown that the addition of Sasobit® increased the stiffness of both binders and changed PG grade by one unit up (6 °C PG grade). Also, Sasobit® presented better rutting resistance in modified and unmodified binders than Advera®, while both WMA additives decreased the fatigue cracking resistance. Multiple Stress Creep Recovery (MSCR) test was also conducted on both unaged and RTFO aged binders. Modified binder.

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SP - 129

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JO - RILEM Bookseries

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ER -

Rheological evaluation of shortand long-term performance for warm mix asphalt (WMA) binders

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