Preparation, Structure, and Properties of Modified Asphalt with Waste Packaging Polypropylene and Organic Rectorite

Cheng, Youliang; Fu, Qiangang; Fang, Changqing; Zhang, Qingling; Lu, Chan

doi:10.1155/2019/5362795

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…Recent studies have shown that the addition of waste PVC increases the viscosity and stiffness of base asphalt so that the modified asphalt has better rutting resistance. One possible reason is that the chloride and carbon bond dipole in PVC provides a greater stiffness [ 73 ]. A study by Ziari [ 74 ] indicated that waste PVC improves the fatigue resistance, but the thermal cracking resistance is poor.…”

Section: The Use Of Waste Plastics In Asphaltmentioning

confidence: 99%

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: The Use Of Waste Plastics In Asphaltmentioning

confidence: 99%

Using Waste Plastics as Asphalt Modifier: A Review

Zhao

2021

Materials

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“…Chen et al developed a modified asphalt using waste packaging PP and organic rectorite (OR). The modified asphalt contains 4 wt% PP and 1.5 wt% OR demonstrating good ductility and plasticity [6]. In addition, PP enhanced the indirect tensile strength, Marshall stability, and deformation resistance of asphalt mixes [4,5,7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of COVID-19 Face Mask Additives on the High-Temperature and Fatigue Performance of Asphalt Binder

Li,

Shen,

Zhang

et al. 2023

Advances in Transdisciplinary Engineering

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In order to alleviate the environmental impact of mask waste, 5%, 10%, and 15% shredded face masks (SFM) were added to 70# base asphalt, respectively, and the feasibility of applying masks in asphalt modification was evaluated by temperature sweep, frequency sweep, MSCR, and time scan tests. The complex modulus, rutting factor, and average percent recovery were all improved by SFM modification, while the non-recoverable creep compliance and phase angle were also reduced. Effective enhancements were made to resistance to rutting and creeping. Additionally, 5% SFM-modified asphalt had a 5.4% increment in fatigue life compared to the original binder, whereas 10% and 15% SFM-modified asphalt had a decrease in fatigue life of 11.5% and 29.0%, respectively. The test results provide a reference for the engineering application of waste mask modified asphalt and have potential environmental benefits.

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“…On the one hand, several waste materials have been employed to enhance the properties of bitumen and asphalt mixtures [4,5]. Those materials include sulphur [6], mineral acids [7] and waxes [8], but the most employed waste materials are the plastics (i.e., polymers) [9,10], which include: Polyethylene Terephthalate (PET) [11], High density polyethylene (HDPE) [12,13], Low Density Polyethylene (LDPE) [14], Polystyrene (PS) [15], Polyurethane (PU) [16,17], Polypropylene (PP) [18], acrylonitrile butadiene styrene (ABS) [19], polyvinyl chloride (PVC) [20][21][22] and ethylene vinyl acetate (EVA) [23,24]. Some of these materials are usually used as bitumen modifiers, whose beneficial performance effects are highlighted in comparison with traditional bitumen and commercial modified bitumen [25,26].…”

Section: Introductionmentioning

confidence: 99%

A Practice for the Application of Waste in Road Asphalt Pavements in an Eco-Friendly Way

2021

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The integration of circular economy principles in the design of road pavements raises the problem of obtaining high-performance asphalt mixtures for reduction of waste and environmental pollution compared to traditional solutions. In this study, the base and binder layers of road asphalt pavements were prepared by using reclaimed asphalt pavement and construction and demolition waste as coarse aggregates, while jet grouting waste and fly ash served as fillers. A leaching test was performed for the marginal materials, after which the engineering performances of the designed asphalt mixtures were investigated through laboratory tests. A life cycle assessment methodology was applied to determine the life cycle impacts of one cubic meter of each asphalt solution. Next, a multi-criteria decision analysis (MCDA) was performed for the solutions suggested for the binder and base layers. Finally, a sensitivity analysis was conducted to identify the most suitable MCDA solutions by varying the weights for a total of 24 different weight configurations. The results of this work revealed that the solutions utilizing jet grouting waste (in particular, the hot asphalt mixture for the binder layer and cold asphalt mixture for the base layer) were preferred to other traditional and alternative solutions in most decision-making scenarios.

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Preparation, Structure, and Properties of Modified Asphalt with Waste Packaging Polypropylene and Organic Rectorite

Cited by 8 publications

References 38 publications

Using Waste Plastics as Asphalt Modifier: A Review

Using Waste Plastics as Asphalt Modifier: A Review

Influence of COVID-19 Face Mask Additives on the High-Temperature and Fatigue Performance of Asphalt Binder

A Practice for the Application of Waste in Road Asphalt Pavements in an Eco-Friendly Way

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