Physical, chemical and rheological properties of waste edible vegetable oil rejuvenated asphalt binders

Chen, Meizhu; Leng, Binbin; Wu, Shaopeng; Sang, Yang

doi:10.1016/j.conbuildmat.2014.05.033

Cited by 266 publications

(82 citation statements)

References 27 publications

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“…We have to remember that additive A1 consisted only of vegetable oil, contrary to additive A2, which consisted of vegetable oil and animals fats. Even if the origin of the accelerating aging of A1 compared to A2 was not known because of the confidential chemical structure of these additives, the increase in binder stiffness observed was consistent with the results obtained in several studies [22][23][24][25]. Note that the accelerating aging observed for fluxed binders (B3' and B5') compared to the reference binder (B1') could lead to early cracking of the asphalt pavement.…”

Section: Aged Binders' Complex Modulisupporting

confidence: 92%

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

Somé¹,

Gaudefroy²,

Delaunay

2015

Mater Struct

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The effects of vegetable fluxes on the rheological properties of binders and foamed warm mix asphalt (WMA) have been studied. The fluxes consist of two organic additives: a methyl ester of fatty acid from sunflower and a resin fluxed with monoalkyl esters. Commercially, they are named Oleoflux and Green Seal, respectively. Three additives' contents (0, 0.5 and 5 %) have been investigated. The surface tension, infrared spectra, viscosity, penetration and softening temperature of the binders have first been first measured. The linear viscoelastic properties of the mixes and binders have been studied through the complex modulus and modeled by the improved Huet-Sayegh model. The viscosity and complex modulus of the fluxed binders show that the increase of the additive content rejuvenates the base bitumen. The model parameters show that the relaxation times vary inversely with the additives' contents. Moreover, after 8 months of aging at room conditions, it was found that the fluxed binders are more sensitive to aging than nonfluxed binders. In conjunction with the binders' property characterization, the complex modulus and stripping resistance of the mixes have been studied. The mixes' complex modulus results are consistent with those of the binder. Thanks to an ingenious road built with WMA and HMA, the field performances at the early age when the road was built and 5 years later have been compared, although 5 years is not enough to draw definitive conclusions. No significant difference is found between WMA and HMA skid resistances and complex moduli. A slight decrease is found in the stripping resistance of WMA compared to those of HMA. A decrease in the skid resistance is observed 5 years later because of the polishing of the aggregates on the road surface due to traffic.

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Section: Aged Binders' Complex Modulisupporting

confidence: 92%

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

Somé¹,

Gaudefroy²,

Delaunay

2015

Mater Struct

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“…However, waste cooking oil is supposed to have lower aging susceptibility in comparison to fresh bio-oils due to undergoing the cooking process at high temperature which leads to significant reduction of volatile components (Chen et al, 2014). Furthermore, the flash point of waste cooking oil is above 220 ºC which means that waste cooking oil is stable enough for application in hot mixing asphalt mixtures (Chen et al, 2014). An ample supply of waste cooking oil exists, with roughly 5 million tons generated in China alone each year (Chen et al, 2014).…”

Section: Introductionmentioning

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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“…Rejuvenators are used to lower the viscosity of the aged asphalt. It proves that rejuvenators can help to reconstitute the aged binder's chemical composition, and further restore the performances of aged asphalt [27,28]. So the rejuvenator-encapsulation technology may be an alternative method.…”

Section: Small Contractilitymentioning

confidence: 92%

Size optimization and self-healing evaluation of microcapsules in asphalt binder

Sun

Zhu

2015

Colloid Polym Sci

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Adding self-healing microcapsules into the asphalt binder seems to be an effective way to autonomously repair the micro-cracks in asphalt concrete, slow fatigue cracks growth rate, restore original mechanical properties, and further enlarge the fatigue life. Size including the diameter of the capsules and the thickness of the shell wall is one key parameter significantly determining the properties of microcapsules. Eleven microcapsule samples fabricated under different stirring rates with different core/shell thickness ratio are prepared. An optimal set of parameters suitable for introduction into asphalt is studied based on the microscope observation, component identification, and thermogravimetric estimation. The self-healing capability of the selected microcapsules is further evaluated based on the fatigue life recovery test. From testing results, it is shown that microcapsules fabricated under the 800 rpm stirring speed with 1:1 core/shell thickness ratio have a much more satisfactory size and shell structure, and present superior capability to improve the healing behavior of asphalt.

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Physical, chemical and rheological properties of waste edible vegetable oil rejuvenated asphalt binders

Cited by 266 publications

References 27 publications

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

Effect of vegetable oil additives on binder and mix properties: laboratory and field investigation

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

Size optimization and self-healing evaluation of microcapsules in asphalt binder

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