Effect of Using Polymers on Bituminous Mixtures Characteristics in Egypt

Abdallah, Ahmed M.; Ibrahim, Muhammad Bello; Attia, El-sharkawi; Fathy, Mahmoud; Khamis, Abd-Elmaksoud; Magdy, Eslam; Deef, Mohammed

doi:10.9790/1684-11475463

Cited by 16 publications

(5 citation statements)

References 4 publications

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“…Some authors failed to use PVC as a polymer modifier for bitumen due to its high melting point of around 298 • C [22,42,46]. Nevertheless, some other authors use PVC in hot mixtures with bitumen as a modifier of its properties, heating the polymer to a temperature between 160 and 190 • C [54,55]. The studies that succeeded in incorporating PVC into the binder used PVC particles with sizes ranging from 0.075 mm to 2 cm [49][50][51].…”

Section: Polyvinyl Chloride (Pvc)mentioning

confidence: 99%

Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review

et al. 2019

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The use of polymer-modified binders in asphalt mixtures has become more widespread due to their reduced thermal susceptibility and improved rutting and fatigue resistance. Nevertheless, their high cost limits their application, thus making the use of reclaimed polymers (RP) an interesting alternative for both reducing price and extending the service life of pavements. This paper; therefore, presents a comparative review of the recycled polymers most commonly studied as bitumen modifiers: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ethyl vinyl acetate (EVA), and ground tire rubber (GTR), in order to facilitate their selection and extend the use of the bitumen. The differences in terms of melting point, mixing conditions, and maximum quantity of added polymer are analyzed. Moreover, their effect on the mechanical behavior of the asphalt binders and their stability with and without the use of additives is presented. According to the literature revision, the performance of the new binder is more influenced by the kind of polymer that was incorporated and the mixing conditions than by the base bitumen that was chosen, although rheological evaluation is needed to fully understand the modification mechanisms of the modified binder. In general terms, plastomers have a stronger effect in terms of increasing the stiffness of the bitumen in comparison with crumb rubber (elastomers), thus providing an improved rutting resistance. The joint use of polyethylene (plastomer) and crumb rubber (elastomer) can be an interesting option for its recycling potential and mechanical performance, although further study is needed to achieve stable bitumen across the entire range of temperatures; additives, such as maleic anhydride (MA), are commonly employed to improve the stability of the binder and enhance its characteristics, but their use could limit the economic benefits of using recycled materials.

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Section: Polyvinyl Chloride (Pvc)mentioning

confidence: 99%

Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review

et al. 2019

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“…In other words, the rutting resistance has improved. The reason for that is conventional asphalt mixtures are unable to withstand the rise in axle loads and tire pressures [22]. In contrast, adding EE-2 polymer means the binders become stiffer (higher rutting resistance).…”

Section: Vol 20 Issue 1 387-396mentioning

confidence: 99%

Investigating the Dynamic Creep of Polymer Modified Hot Mix Asphalt

Suleiman,

Aodah,

Hanandeh

et al. 2024

Civil and Environmental Engineering

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Jordan's road network continues to deteriorate as a consequence of the continuous increase in traffic and the absence of adequate maintenance work. The primary objective of this study was to enhance HMA performance by using polymer-modified asphalt mixtures. The polymer modifier known commercially as Eastman (EE-2) was mixed with binder penetration grade (60–70) at a ratio of 12%. In order to investigate the performance of polymer, the dynamic creep, the resilient modulus and the stability-flow tests were performed. Marshall Mix design was utilized to prepare a total of 50 samples, of which 20 were used to determine the optimal binder content, and the remaining samples were used to determine the effect of EE-2 modifier on asphalt mixtures. The results showed that the optimal asphalt content was 4.57 percent and revealed that the addition of EE-2 polymer to asphalt cement contributed to the production of a variety of desirable properties. The most important indicator of these developments is increased rutting resistance. For instance, the total permanent deformation has decreased by 87% (8500 to 1000 μm). Conversely, addition of EE-2 has resulted in a threefold increase in the resilience modulus (from 3632 to 10590 MPa). Finally, effect of the EE-2 polymer on the stability was demonstrated by increasing the stability value by about 52%

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“…PVC was not used as an asphalt modifier in some studies due to the melting point of PVC (about 298 °C). 227,228 However, some researchers heated the mixture of PVC and asphalt to 160−190 °C, 229,230 and PVC particle sizes ranged from 0.075 mm to 2 cm. 231,232 That process successfully made PVC melt into the asphalt.…”

Section: Polymer Modified Asphalt With Other Additivesmentioning

confidence: 99%

“…PVC is widely used in the field of construction works because of its low cost, durability, and easy processing. PVC was not used as an asphalt modifier in some studies due to the melting point of PVC (about 298 °C). , However, some researchers heated the mixture of PVC and asphalt to 160–190 °C, , and PVC particle sizes ranged from 0.075 mm to 2 cm. , That process successfully made PVC melt into the asphalt. Marshall’s test showed that the greater the amount of PVC added, the lower the permeability, ductility, and solubility of the mixture, and the higher the softening point .…”

Section: Molecular Dynamics Simulation Of Waste Polymer-modified Asphaltmentioning

confidence: 99%

Perspectives on the Application of Waste Materials in Asphalt Based on Molecular Dynamics Simulations: A Review

Yao,

Zeng,

Liu

et al. 2024

Energy Fuels

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During the last few decades, industrial waste has increased at an alarming rate, and the recycling of waste materials has always been an urgent problem to be solved. While the number of vehicles per citizen has dramatically increased, as well as the traffic loading, limiting the deterioration of the pavement networks is an approach, and it can be achieved by the addition of polymers to asphalt binders and mixtures. Waste polymers are used in asphalt due to their low cost and environmental friendliness. Both asphalt and polymeric materials are complex in structure, and it is difficult for researchers to quickly and clearly understand the properties of the materials and how they change. Multiscale research approaches effectively improve the understanding of materials with macroscopic/experimental data and microscopic simulations. The Molecular Dynamics (MD) method is employed to analyze material properties from a nanoscale perspective, and it is one of the most powerful and effective tools to understand fluid and material behaviors at an atomic level. This work aims to review the application of waste materials to asphalt materials based on the MD method. A brief description was demonstrated for the model generation and property analysis of modeling asphalt molecules and waste polymer-modified asphalt, especially electronic waste materials, as well as recycled asphalt pavement (RAP) and thermoplastics. Moreover, the advantages and disadvantages of MD simulation methods were extensively discussed for the application of waste materials in engineering materials. The review may provide a more comprehensive understanding of related projects and guide subsequent research for readers.

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Effect of Using Polymers on Bituminous Mixtures Characteristics in Egypt

Cited by 16 publications

References 4 publications

Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review

Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review

Investigating the Dynamic Creep of Polymer Modified Hot Mix Asphalt

Perspectives on the Application of Waste Materials in Asphalt Based on Molecular Dynamics Simulations: A Review

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