Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Laboratory performance of dense graded asphalt mixtures prepared using highly polymer modified binders containing corn oil as softening agent
Highlights High Polymer Modified Asphalt (HPMA) with corn oil can resist short term aging. Crack Propagation slows with HPMA and corn oil combination compared to Control. Life Cycle Analysis shows the cost-effectiveness of the optimized combination of HPMA and Corn Oil.
Abstract This study evaluated the impact of aging on High Polymer Modified Asphalt (HPMA) mixtures containing a softening agent (SA). The aging susceptibility was evaluated in terms of rutting, cracking, and durability. Four asphalt mixtures were prepared, one with PG 52–34 binder as control, and three others using modified PG 52–34 with varying dosages of Styrene Butadiene Styrene (SBS) and corn oil (SA). The tests performed to evaluate the impact of aging (short, long, extended long term) were the Dynamic Complex Modulus, Hamburg Wheel Tracking, Flow Number, Indirect Tension and semi-Circular Bend tests. Based on these testing results, SBS and SA increased the durability and rutting resistance of asphalt mixtures. Modified asphalt mixtures also showed better cracking resistance than the control mix (i.e. lowering of crack propagation). However, with aging, fatigue cracking performance diminished while remaining comparable to the control mix. A balanced dosage of SBS (7.5%) and SA (7%) led to the best improvement in durability, rutting, and short-term cracking performance.
Laboratory performance of dense graded asphalt mixtures prepared using highly polymer modified binders containing corn oil as softening agent
Highlights High Polymer Modified Asphalt (HPMA) with corn oil can resist short term aging. Crack Propagation slows with HPMA and corn oil combination compared to Control. Life Cycle Analysis shows the cost-effectiveness of the optimized combination of HPMA and Corn Oil.
Abstract This study evaluated the impact of aging on High Polymer Modified Asphalt (HPMA) mixtures containing a softening agent (SA). The aging susceptibility was evaluated in terms of rutting, cracking, and durability. Four asphalt mixtures were prepared, one with PG 52–34 binder as control, and three others using modified PG 52–34 with varying dosages of Styrene Butadiene Styrene (SBS) and corn oil (SA). The tests performed to evaluate the impact of aging (short, long, extended long term) were the Dynamic Complex Modulus, Hamburg Wheel Tracking, Flow Number, Indirect Tension and semi-Circular Bend tests. Based on these testing results, SBS and SA increased the durability and rutting resistance of asphalt mixtures. Modified asphalt mixtures also showed better cracking resistance than the control mix (i.e. lowering of crack propagation). However, with aging, fatigue cracking performance diminished while remaining comparable to the control mix. A balanced dosage of SBS (7.5%) and SA (7%) led to the best improvement in durability, rutting, and short-term cracking performance.
Laboratory performance of dense graded asphalt mixtures prepared using highly polymer modified binders containing corn oil as softening agent
Ali, Ayman (Autor:in) / Kabir, Sk Faisal (Autor:in) / Al-Badr, Basel (Autor:in) / Alfalah, Ahmad (Autor:in) / Xie, Zhaoxing (Autor:in) / Decarlo, Christopher (Autor:in) / Elshaer, Mohamed (Autor:in) / Mehta, Yusuf (Autor:in)
01.07.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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