Impacts of lubricating oils on rheology and chemical compatibility of asphalt binders

Teymourpour, Pouya; Sillamäe, Sven; Bahia, Hussain U.

doi:10.1080/14680629.2015.1030833

Cited by 16 publications

(6 citation statements)

References 11 publications

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“…The oil and fresh binder was synthesized in a high shear mixer (5000 rpm) at 150°C for 30 min based on their percentage (wt.) in the final blend for each mixture (Teymourpour et al, 2015) (Table 2). RTFO and PAV aging were performed on binders in accordance with AASHTO 240-09 and ASTM D6521, respectively.…”

Section: Determination Of Rap Binder Pg Blended Binder Pg and Optimum...mentioning

confidence: 99%

Investigating short-term and long-term binder performance of high-RAP mixtures containing waste cooking oil

Majidifard

Tabatabaee

Buttlar

2019

Journal of Traffic and Transportation Engineering (English Edit

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Highlights The use of waste cooking oil as a recycling agent opens the possibility for the routine design of 60-to-nearly-100% recycled content asphalt paving mixtures. Aging susceptibility of recycled binders with waste cooking oil is higher than virgin binder. Oil has a greater effect on reducing the stiffness of RAP binder than increasing its m-value. Waste cooking oil tended to improve mixture workability and low temperature performance while reducing moisture and rutting resistance. Selecting the optimum oil content as equal to the average oil content based on satisfying the LT and HT PG can assure short-term and long-term performance. AbstractThe environmental and economic benefits of recycling asphalt pavements have received much attention in recent years. Because of the increase in the cost of raw materials and energy carriers, the reuse of large portions of reclaimed asphalt pavement (RAP) is critical in reducing both the cost and environmental footprint of asphalt pavements. High-RAP mixtures are more prone to low temperature cracking and poor mixture workability because of the higher stiffness of RAP binder. Recycling agents are one of the additives which are used to improve these deficiencies. However, there is some ambiguity about the optimum content of recycling agent to assure proper performance of recycled asphalt pavement during its service life. The current study used 60% and 100% fractionated RAP with waste cooking oil as a recycling agent and crumb rubber to alleviate the aforementioned problems.Laboratory evaluation showed that increasing the amount of recycling agent in the high-RAP mixtures improved their workability and low temperature performance while decreasing moisture damage and rutting resistance. The long-term susceptibility to aging of recycled binder with the organically-based recycling agent was also investigated. A procedure to obtain the optimum percentage of recycling agent was devised to strike a balance between the performance characteristics of mixtures with a high-RAP content.

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Section: Determination Of Rap Binder Pg Blended Binder Pg and Optimum...mentioning

confidence: 99%

Investigating short-term and long-term binder performance of high-RAP mixtures containing waste cooking oil

Majidifard

Tabatabaee

Buttlar

2019

Journal of Traffic and Transportation Engineering (English Edit

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“…Results from a study conducted by Teymourpour et al corroborated conclusions from the OMI study (19). In addition, Teymourpour used gel permeation chromatography (GPC) testing to understand the molecular size distribution (MSD) changes for binders modified with oils and polymers (19).…”

Section: Oil Additives Extenders and Polymer Modificationmentioning

confidence: 77%

Effect of Polymer and Oil Modification on the Aging Susceptibility of Asphalt Binders

Liu

Moraes²,

Lyngdal

et al. 2016

Transportation Research Record: Journal of the Transportation R

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Oxidative aging causes hardening of asphalt binders and, consequently, contributes to the deterioration of asphalt pavements. The principal cause of asphalt aging and embrittlement in service is the atmospheric oxidation of molecules with the formation of highly polar and strongly interacting functional groups containing oxygen. Therefore, aging is a complex process in unmodified asphalt binders, and the complexity increases for modified binders. The dynamics of world resource economics suggest that the asphalt pavement industry should be exploring economically and environmentally sustainable approaches to development, such as the addition of recycled oils to the base asphalt binder, and thus research activities are noteworthy in this area. The effect of oil and polymer modification on asphalt binder rheology and oxidative aging has become a popular topic for research in recent years. However, the effects of oil and polymers are often studied independently. The objective of this study was to investigate the modification effects of bio-oil, re-refined wasted engine oil, polymers, and the interaction between polymers and oil on the aging susceptibility of asphalt binders. After laboratory accelerated aging procedures were conducted, dynamic shear rheometer and bending beam rheometer tests were used for the rheological performance evaluation. Gel permeation chromatography and Fourier transform infrared spectroscopy were used to verify the rheological results with chemical analysis tools. Results indicate that the aging susceptibility of modified asphalt binders is dependent on modification chemistry. Certain polymers and combinations of polymers with oil can reduce the base asphalt binder’s susceptibility to aging.

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“…According to Teymourpour et al [18], the application of WCO in conventional binder proved an enhancement of thermal cracking resistance but compromising the high temperature performance as evidenced by the reduction of resistance to rutting. The superiority performance of fatigue cracking resistance was noticeable with the addition of WCO as reported in a previous research.…”

Section: Introductionmentioning

confidence: 99%

“…However, despite the broadly practiced WCO application, the identification of fundamental parameters influencing WCO in binder modification and also the effectiveness of the process has not been investigated yet [18]. In addition, the chemical mechanism for modifying asphalt binder with WCO and the effect of WCO on the modified binder performance are not clearly documented.…”

Section: Introductionmentioning

confidence: 99%

X-Ray Diffraction Analysis of Bitumen Containing Untreated and Treated Waste Cooking Oil

2019

IJRTE

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Abundant of waste cooking oil (WCO) production can cause prominent adverse impact and threat to the environment if not properly managed and disposed. Therefore, recycling or reusing WCO in modified asphalt binder is considered as an effective utilisation and environmental benefits. Hence, this study was to evaluate the chemical characteristic of untreated and treated WCO in modified binder through X-Ray diffraction analysis. The results indicated that the amorphous structure was present in the control and modified binders with untreated and treated WCO. The flat trends tabulated in XRD graph for modified binder depicted the uniform dispersion and homogeneous solution was achieved between the untreated and treated WCO with the asphalt binder during mixing process.

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Impacts of lubricating oils on rheology and chemical compatibility of asphalt binders

Cited by 16 publications

References 11 publications

Investigating short-term and long-term binder performance of high-RAP mixtures containing waste cooking oil

Investigating short-term and long-term binder performance of high-RAP mixtures containing waste cooking oil

Effect of Polymer and Oil Modification on the Aging Susceptibility of Asphalt Binders

X-Ray Diffraction Analysis of Bitumen Containing Untreated and Treated Waste Cooking Oil

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