The feasibility of using epoxy asphalt to recycle a mixture containing 100% reclaimed asphalt pavement (RAP)

Yi, Xingyu; Chen, Huimin; Wang, Houzhi; Shi, Chenguang; Yang, Jun

doi:10.1016/j.conbuildmat.2021.126122

Cited by 43 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maintenance and reconstruction of asphalt pavement following prolonged use will generate a substantial volume of RAP material [1,2]. Improper disposal of RAP can lead to environmental pollution and resource wastage [3][4][5]. Therefore, the recycling of RAP is the best way to save nonrenewable resources and protect the environment; it is also the focus of social attention [6,7].…”

Section: Introductionmentioning

confidence: 99%

The Early Performance Development of Hot In-Place Recycled Asphalt Mixture

Shi,

Liu,

Xue

et al. 2024

Coatings

View full text Add to dashboard Cite

With increasing societal attention being directed to resource and environment problems, the research focus on high reclaimed asphalt content mixtures has become pertinent. The degree of asphalt fusion in the thermal regeneration process of a high RAP content reclaimed asphalt mixture has a great influence on its performance. In order to explore the development process of hot in-place recycling mixture performance along with internal asphalt fusion, this study conducted research on a geothermal regeneration mixture with 80% RAP content. Dynamic shear rheology (DSR), infrared spectroscopy, and scanning electron microscopy were used to investigate the fusion of recycled mixture under different placement times (1 day, 4 days, and 7 days), and the road performance and fatigue life of the recycled mixture under different placement times were then studied. The results showed that the fusion degree of old asphalt and new asphalt in a recycled asphalt mixture reached 100%, and gradually increased with the extension of placement time. With the increase in placement time, the high temperature performance of the regenerated mixture gradually decreased, the water stability gradually increased, and the low-temperature performance and fatigue life significantly increased from 1 day to 7 days, by 19% and 32%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

The Early Performance Development of Hot In-Place Recycled Asphalt Mixture

Shi,

Liu,

Xue

et al. 2024

Coatings

View full text Add to dashboard Cite

show abstract

“…However, such studies can only be found in epoxy asphalt binders up to now. Yi X et al [ 32 ] found that the epoxy asphalt fully recycled mixture was superior to rutting resistance but weak in fatigue performance in contrast to the virgin epoxy asphalt mixture. Hence, the performances, characteristics, and values of the PPB binder are urgent to explore.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

Sun,

Wang,

Sun

et al. 2023

Materials

View full text Add to dashboard Cite

Asphalt pavement recycling technology with high reclaimed asphalt pavement (RAP) content has always been limited by unsatisfactory pavement performance and the rising cost of pavement materials. To address these challenges, polyurethane-prepolymer-modified bitumen (PPB) was proposed to be utilized as the asphalt binder of fully reclaimed asphalt pavement (FRAP) in this study. The proper formula of the PPB binder was determined based on a range of tests. The rheological behavior and tensile properties of the PPB binder were then investigated, and the economic cost of materials was discussed as well. Results revealed that the PPB system can be obtained through chemical synthesis using readily available raw materials. The reaction of polyurethane prepolymer and chain extender provides PPB with significant improvement in temperature susceptibility, rutting resistance, and tensile properties. It is also demonstrated in this study that the PPB mixture containing 100% RAP, on the whole, takes advantage of cost-saving especially compared to the epoxy asphalt mixture. Therefore, the PPB binder exhibits a favorable application prospect in FRAP.

show abstract

“…Several solid wastes from various origins have shown great promise for employment in road building construction, including construction and demolition waste (e.g., building rubble, recycled concrete pavement, and recycled asphalt pavement) [ 13 ], reclaimed asphalt pavement [ 14 ], asphalt shingles [ 15 ], ground rubber tires [ 16 ], incinerator ash [ 17 ], glass [ 18 ], cardboard [ 19 ], and plastic [ 20 ], etc. These materials have been discovered as being able to enclose some recoverable elements that can potentially be used in highway-related applications.…”

Section: Introductionmentioning

confidence: 99%

Unlocking the Hidden Potential of Cosmetics Waste for Building Sustainable Green Pavements in the Future: A Case Study of Discarded Lipsticks

2022

View full text Add to dashboard Cite

This investigation is dedicated to unlocking the hidden potential of discarded cosmetics towards building green sustainable road pavements in the future. It is particularly aiming at exploring waste lipstick (WLS) as a high-quality functional additive for advanced asphalt mix technologies. To fuel this novel innovation, the effect of various WLS doses (e.g., 5, 10, and 15 wt.%) on the performance of base AP-5 asphalt cement was studied in detail. A wide array of cutting-edge analytical lab techniques was employed to inspect in-depth the physicochemical, microstructural, thermo-morphological, and rheological properties of resultant admixtures including: elemental analysis, Fourier transform-infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thin-layer chromatography-flame ionization detection (TLC-FID), scanning electron microscopy (SEM), atomic force microscopy (AFM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), needle penetration, ring and ball softening point, Brookfield viscometer, ductility, and dynamic shear rheometer (DSR) tests. Unlike the unstable response of asphaltenes, the additive/artificial aging treatments increased the fraction of resins the most, and decreased that of aromatics; however, asphaltenes did not impair the saturates portion, according to Iatroscan research. FT-IR scan divulged that the WLS-asphalt interaction was physical rather than chemical. XRD diagnosis not only revealed an obvious correlation between the asphaltenes content and the fresh-binder crystallinity but also revealed the presence of fillers in the WLS, which may generate outstanding technical qualities to bituminous mixes. According to AFM/SEM analyses, the stepwise incorporation of WLS grew the magnitude of the “bee-shaped” microstructures and extended the roughness rate of unaged/aged binders. The prolonged consumption of the high thermal-stable additive caused a remarkable drop in the onset degradation and glass transition temperature of mixtures, thus enhancing their workability and low-temperature performance, according to TGA/DTGA/DSC data. The DSR and empirical rheological experiments demonstrated that the WLS could effectively lower the manufacturing and compaction temperatures of asphalt mixes and impart them with valuable anti-aging/fatigue-cracking assets. In a nutshell, the use of waste lipstick as an asphalt modifier is viable and cost-effective and could attenuate the pollution arisen from the beauty sector, while improving the performance of hot/warm asphalt mixes (HAM/WAM) and extending the service life of roadways.

show abstract

The feasibility of using epoxy asphalt to recycle a mixture containing 100% reclaimed asphalt pavement (RAP)

Cited by 43 publications

References 28 publications

The Early Performance Development of Hot In-Place Recycled Asphalt Mixture

The Early Performance Development of Hot In-Place Recycled Asphalt Mixture

Feasibility Analysis of Polyurethane-Prepolymer-Modified Bitumen Used for Fully Reclaimed Asphalt Pavement (FRAP)

Unlocking the Hidden Potential of Cosmetics Waste for Building Sustainable Green Pavements in the Future: A Case Study of Discarded Lipsticks

Contact Info

Product

Resources

About