Asphalt concrete mixtures modified with polymeric waste by the wet and dry processes: A literature review

Duarte, Gabriel Macêdo; Faxina, Adalberto Leandro

doi:10.1016/j.conbuildmat.2021.125408

Cited by 61 publications

(23 citation statements)

References 192 publications

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“…In the following years, six sites were selected to investigate the status of waste plastic asphalt pavement. The results showed that these roads worked well, without potholes, raveling, and rutting [ 151 ].…”

Section: Engineering Properties Environmental Concerns and Practical Engineering Applications Of Waste Plastic Asphalt Mixturesmentioning

confidence: 99%

“…The Indian Highway Congress published guidance for the use of waste plastics in the bituminous mixture in 2013, while the National Rural Highway Development Agency provided guidelines on the use of waste plastics in rural road construction [ 151 ].…”

Section: Engineering Properties Environmental Concerns and Practical Engineering Applications Of Waste Plastic Asphalt Mixturesmentioning

confidence: 99%

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Using Waste Plastics as Asphalt Modifier: A Review

Zhao

2021

Materials

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The use of waste products in the production of asphalt binders and asphalt mixtures has become widespread due to economic and environmental benefits. In particular, the use of recycled waste plastic in asphalt binders and mixtures is gaining more attention. This review presents analyses and comparisons of various forms of waste plastic used in asphalt modification, and approaches to incorporating waste plastic into asphalt mixtures, both for single and composite modifications. It focuses on the properties of waste plastics, asphalt binders, and asphalt mixtures. Overall, the incorporation of plastic waste into asphalt mixtures can significantly improve high-temperature performance and has potential economic and environmental benefits. The performance of modified asphalt is highly dependent on multiple factors, such as waste sources, waste plastic dosages, blending conditions, and the pretreatment methods for waste plastic. There are different ways to apply waste plastics to blend into a mixture. In addition, this paper discusses the current challenges for waste plastic-modified asphalt, including the stability, low-temperature performance, modification mechanism, and laboratory problems of the blends. The use of chemical methods, such as additives and functionalization, is considered an effective way to achieve better interactions between waste plastics and the binder, as well as achieving a higher sufficiency utilization rate of waste plastics. Although both methods provide alternative options to produce waste plastic-modified asphalt with stability and high performance, the optimal proportion of materials used in the blends and the microcosmic mechanism of composite modified asphalt are not clear, and should be explored further.

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Section: Engineering Properties Environmental Concerns and Practical Engineering Applications Of Waste Plastic Asphalt Mixturesmentioning

confidence: 99%

Section: Engineering Properties Environmental Concerns and Practical Engineering Applications Of Waste Plastic Asphalt Mixturesmentioning

confidence: 99%

Using Waste Plastics as Asphalt Modifier: A Review

Zhao

2021

Materials

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“…The performance of asphalt directly affects the pavement performance of the asphalt mixture and the service condition of pavement [3]. To improve the service quality and service life of asphalt pavement, researchers have prepared mixtures by using modified asphalt that can enhance the road performance of an asphalt mixture [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Asphalt Modified with Steel Slag Powder and Waste Tire Rubber Compounds

et al. 2022

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As two kinds of solid wastes, waste tires and steel slag have caused serious threats to the environment. Both waste tire rubber (WTR) and steel slag powder (SSP) can improve the performance of asphalt, while the performance indexes and modification mechanism of modified asphalt are not clear. In this paper, asphalt modified with SSP and WTR was prepared, and its performance was evaluated. The physical properties of asphalt modified with SSP and WTR, including penetration, the softening point, and viscosity, were investigated. Furthermore, high-temperature performance, fatigue resistance, low-temperature performance, and blending mechanism of asphalt modified with SSP and WTR were tested with a dynamic shear rheometer (DSR), bending beam rheometer (BBR), and Fourier transform infrared spectrometer (FTIR). The results showed that with the same content of WTR and SSP, WTR reveals a more significant modification effect on physical properties, fatigue, and low-temperature performance of base asphalt than SSP. The anti-rutting performance of SSP-modified asphalt is better than that of WTR-modified asphalt at 30~42 °C, and the anti-rutting performance of WTR-modified asphalt is better than that of SSP-modified asphalt at 42~80 °C. When the total content of WTR and SSP is the same, the physical properties, high-temperature resistance, fatigue resistance, and low-temperature performance of the asphalt modified with WTR and SSP decrease with the decrease in the ratio of WTR and SSP, and their performance is between WTR-modified asphalt and SSP-modified asphalt. Infrared spectrum results verified that the preparation of WTR- and SSP-modified asphalt is mainly a physical blending process. Overall, this research is conducive to promoting the application of modified asphalt with WTR and SSP in the construction of high-standard pavement.

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“…Compared with repairing and sealing maintenance, thin-layer overlays can deal with a wider variety of diseases and damages, and they can modify surface defects and improve the overall smoothness and skid resistance of the road surface [2,3]. Generally, a high cohesion is required for asphalt mixture used in thin-layer overlays, so modified asphalt is usually used instead of common asphalt, and researchers have done a lot of experiments and used various modifiers to improve the modification effect, and it's found that compared with other types of modified asphalt, the RP-modified asphalt has better crack resistance in low temperature environment [4,5], however, for the ordinary RPmodified asphalt processed by the wet method, due to the discontinuous preparation and utilization processes, segregation might occur during storage and transportation, and some studies have proved that, after stored for more than 12 hours, RP-modified asphalt would exhibit serious segregation problem [6]. If this material is used in pavement, problems such as incompact surface might show up, in severer cases, it might cause surface cracking or wheel ruts; while the dry process has the feature of "use right after mixed", which can effectively solve the segregation problem and ensure the uniformity of the material, thereby reducing the possible damages to the road surface [7,8].…”

Section: Introductionmentioning

confidence: 99%

Road Performance of an Overlay Material Improved by Rubber Powder Dry-Processing Method in Cold Regions

Liu¹,

Liu²,

Qiu³

et al. 2022

EESRJ

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This paper studied a thin-layer overlay material used in cold regions, aiming to solve the contradiction between the low-temperature crack resistance and skid resistance of asphalt mixture. At first, this paper adopted a dry-processing method to solve the possible segregation problem of Rubber Powder (RP)-modified asphalt in real engineering practice, the proportion of minerals in the proposed material was adjusted within the grading range of Stone Mastic Asphalt (SMA)-10 for the purpose of attaining asphalt mixture that has satisfactory strength and usability. Then, the proposed material was subject to low-temperature splitting test and Cantabro raveling test to verify its lowtemperature cracking resistance and disintegration resistance, and two parameters British Pendulum Number (BPN) and Mean Profile Depth (MPD) were applied to evaluate the skid resistance of the proposed thin-layer overlay material, and the test results showed that, the proposed RP-modified asphalt processed by the dry method had very good lowtemperature performance, the medium-coarse SMA-10 gradation can well balance the strength and skid resistance of the material, and enhance the applicability of thin-layer overlay material in cold regions.

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Asphalt concrete mixtures modified with polymeric waste by the wet and dry processes: A literature review

Cited by 61 publications

References 192 publications

Using Waste Plastics as Asphalt Modifier: A Review

Using Waste Plastics as Asphalt Modifier: A Review

Performance Evaluation of Asphalt Modified with Steel Slag Powder and Waste Tire Rubber Compounds

Road Performance of an Overlay Material Improved by Rubber Powder Dry-Processing Method in Cold Regions

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