Short-term and long-term aging effect of the rejuvenation on RAP binder and mixes for sustainable pavement construction

Pradhan, Sujit Kumar

doi:10.1016/j.ijtst.2022.09.005

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…The study investigates the impact of rejuvenation on RAP binders and mixes, exploring both short-term and long-term aging effects. Its objective is to evaluate the sustainability of pavement construction methods 26 . Laboratory experiments assessed Mahua oil's effectiveness in rejuvenating aged binder, exploring its potential as an asphalt binder rejuvenator to improve pavement performance and sustainability 27 .…”

Section: Introductionmentioning

confidence: 99%

Bio-oil modified binder derived from cotton stalks as an eco-friendly alternative binder for flexible pavements

Ullah,

Zaidi,

Khan

et al. 2024

Sci Rep

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Scientists and engineers encounter considerable environmental and economic obstacles stemming from the depletion of crude oil or petroleum fossil fuel reservoirs. To mitigate this challenge, alternative solutions like bio-oil-modified binder derived from biomass have been innovated. This research aims to examine the feasibility of using bio-oil-modified binder obtained from cotton stalk waste as a modifier. Various mechanical and physical tests, including penetration, softening point, ductility, and dynamic shear rheometer tests, were conducted on asphalt binder incorporating 5% and 10% bio-oil-modified binder. Wheel tracker, four-point beam fatigue, and dynamic modulus tests were used to evaluate asphalt mixture performance, including rutting, fatigue, and dynamic stiffness. A rolling bottle test (RBT) and asphalt binder bond strength (BBS) were used to assess moisture susceptibility. A bio-oil-modified binder enhanced ductility and penetration characteristics while reducing the softening point. With the addition of a bio-oil-modified binder, stiffness was reduced in parameters such as complex shear modulus and phase angle. In fact, for both specimens containing 5% and 10% bio-oil-modified binder, statistically significant differences were observed among the measured samples. As a result of this reduced stiffness, the modified asphalt binder is more suitable for low-temperature applications. Additionally, 5.8% increased at 10% and 3.1% at 5% CS. Bio-oil-modified binder, compared to virgin mixtures, supports equal rut resistance. However, the RBT and BBS tests revealed that the addition of bio-oil-modified binder increased the susceptibility of conventional asphalt binder to moisture. The findings suggest that bio-oil-modified binder can enhance asphalt binder properties in low-temperature regions, but further research is needed to improve moisture resistance.

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Section: Introductionmentioning

confidence: 99%

Bio-oil modified binder derived from cotton stalks as an eco-friendly alternative binder for flexible pavements

Ullah,

Zaidi,

Khan

et al. 2024

Sci Rep

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“…Thus, FAG has improved G*/Sin δ value of the rutting resistance. The rutting of STA binder at different FAG contents has significant changed in the properties of the binder [17][18]. This situation gives insight from the studied percentages (3, 5, 7, 9 and 11), where 9% seems the optimum content of FAG when considering rutting.…”

Section: Effect Of Fag Content On Rutting Resistance For Short-term A...mentioning

confidence: 87%

Effects of Fly Ash Geopolymer Hot Mix Asphalt Additive on the Rheological Properties of Unaged and Short-Term Aged Asphalt Binder

Hazirah Bujang,

Mohamad Yusri Aman,

Mohammad Nasir Mohamad Taher

et al. 2023

ARAM

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Asphalt pavement has the advantages of driving comfort and convenient maintenance, which has been widely applied to highway construction. However, due to the continuously increased traffic volume, it is recognized that asphalt binder and mixtures with enhanced characteristics are needed to guarantee the durability of the functional performance of transportation infrastructures. This study was carried to evaluate the effect of fly ash geopolymer additive on the rheological properties of unaged and short-term aged asphalt binder. In the respect, asphalt binder 80/100 and 60/70 penetration grade with 0, 3, 5, 7, 9 and 11% fly ash geopolymer by weight of asphalt binder were prepared. The results indicated that the addition of FAG significantly increases the stiffness (G*) and decreases the phase angle (δ) for both unaged and short-term aged modified asphalt binder compared to the control asphalt binder. This can be proved that presence of FAG significantly improved rutting parameter i.e G*/sin δ compared to control in which capable to resist rutting at higher temperature. In terms of failure temperature, highest failure temperature of 9% FAG modified asphalt binder indicated that the binder is less susceptible to be rutting at high pavement temperature for both unaged and short-term aged, respectively. Overall research conclusions are that 9% of FAG is proposed as the minimal content to be used as an additive in asphalt binder for further mixture evaluations.

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“…Soft point of asphalt (ring and ball test), a number that shows the temperature when the asphalt touches the steel plate. Weak point [61] related to the level of sensitivity of asphalt to changes in temperature. The minimum softening point of asphalt, according to SNI 06-6399-2002, is 52°C [52].…”

Section: Soft Pointmentioning

confidence: 99%

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

Nasruddin,

Setianto,

Lanjar

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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In this research, sodium bicarbonate (NaHCO3) was used as a leavening agent to create air voids in the rubber-vulcanized matrix. The air cavities formed will increase the solubility of rubber vulcanizate in the hot asphalt mixture. 4 and 5 per hundred rubber (phr) NaHCO3 were added to each rubber compound using an open mill. The rubber compound was then vulcanized at 130°C for 15 minutes. Rubber vulcanizate is produced from 4 and 5 phr NaHCO3, each added at 8% to a hot asphalt solution. As a comparison material to determine the performance of NaHCO3, a rubber compound formula was prepared without using NaHCO3. It was found that the AK-01 sample containing NaHCO3 at 4 phr had several characteristics that met the requirements of Indonesian rubber asphalt regulations, including a softening point of 59.7°C, kinematic viscosity at 135°C of 828 cSt, elasticity after recovery of 30%, storage stability, a softening point difference of 2.2°C, and elasticity after the return of the thin film oven test (TFOT) residue test of 40%.

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Short-term and long-term aging effect of the rejuvenation on RAP binder and mixes for sustainable pavement construction

Cited by 10 publications

References 21 publications

Bio-oil modified binder derived from cotton stalks as an eco-friendly alternative binder for flexible pavements

Bio-oil modified binder derived from cotton stalks as an eco-friendly alternative binder for flexible pavements

Effects of Fly Ash Geopolymer Hot Mix Asphalt Additive on the Rheological Properties of Unaged and Short-Term Aged Asphalt Binder

Enhancing Asphalt Mix Solubility with Sodium Bicarbonate Leavening in Vulcanized Rubber: A Regulatory-Compliant Approach

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