Effects of different polymers on mechanical properties of bituminous binders and hot mixtures

Alataş, Taner; Yilmaz, Mesude

doi:10.1016/j.conbuildmat.2013.01.027

Cited by 56 publications

(26 citation statements)

References 14 publications

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“…This led to the use of the EVA [90,[111][112][113][114][115][116][117][118][119] copolymer, which is probably the second in order of importance after SBS for asphalt modification. Similarly to EVA, other plastomers derived from copolymerization of a functionalized vinyl monomer with ethylene have been suggested and studied, including the entire class of acrylic polymers such as polyethyl acrylate (PEA), polymethyl acrylate, polybutyl acrylate (PBA), poly(ethylene-co-butyl-acrylate) (EBA), poly(ethylene-coacrylic acid) (EAA), poly(ethylene-co-methyl acrylate) (EMA), and poly(methyl methacrylate) [25,30,91,114,120,121].…”

Section: Asphalt Interaction With Eva and Other Ethylene-based Plastomentioning

confidence: 99%

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

524

184

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During the last decades, the number of vehicles per citizen as well as the traffic speed and load has dramatically increased. This sudden and somehow unplanned overloading has strongly shortened the life of pavements and increased its cost of maintenance and risks to users. In order to limit the deterioration of road networks, it is necessary to improve the quality and performance of pavements, which was achieved through the addition of a polymer to the bituminous binder. Since their introduction, polymer-modified asphalts have gained in importance during the second half of the twentieth century, and they now play a fundamental role in the field of road paving. With high-temperature and high-shear mixing with asphalt, the polymer incorporates asphalt molecules, thereby forming a swallowed network that involves the entire binder and results in a significant improvement of the viscoelastic properties in comparison with those of the unmodified binder. Such a process encounters the well-known difficulties related to the poor solubility of polymers, which limits the number of macromolecules able to not only form such a structure but also maintain it during high-temperature storage in static conditions, which may be necessary before laying the binder. Therefore, polymer-modified asphalts have been the subject of numerous studies aimed to understand and optimize their structure and storage stability, which gradually attracted polymer scientists into this field that was initially explored by civil engineers. The analytical techniques of polymer science have been applied to polymer-modified asphalts, which resulted in a good understanding of their internal structure. Nevertheless, the complexity and variability of asphalt composition rendered it nearly impossible to generalize the results and univocally predict the properties of a given polymer/asphalt pair. The aim of this paper is to review these aspects of polymer-modified asphalts. Together with a brief description of the specification and techniques proposed to quantify the storage stability, state-of-the-art knowledge about the internal structure and morphology of polymer-modified asphalts is presented. Moreover, the chemical, physical, and processing solutions suggested in the scientific and patent literature to improve storage stability are extensively discussed, with particular attention to an emerging class of asphalt binders in which the technologies of polymer-modified asphalts and polymer nanocomposites are combined. These polymer-modified asphalt nanocomposites have been introduced less than ten years ago and still do not meet the requirements of industrial practice, but they may constitute a solution for both the performance and storage requirements.

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Section: Asphalt Interaction With Eva and Other Ethylene-based Plastomentioning

confidence: 99%

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

524

184

View full text Add to dashboard Cite

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“…The content of vinyl acetate (VA) can be controlled through the process of copolymerization [58]. The segment of ethylene is not polar but crystalline, while the vinyl-acetate segment presents polarity, but is non-crystalline [59]. This variation in vinyl-acetate (VA) content can provide the RPMB with interesting characteristics.…”

Section: Ethyl Vinyl Acetate (Eva)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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“…The test method is described in ASTM D 4123. In the indirect tensile modulus test, a non-destructive process is applied to observe the effect of temperature and loading rate [23].…”

Section: Resilient Modulus Testmentioning

confidence: 99%

“…In the stiffness modulus tests, the samples were subjected to conditioning loading pulses. The applied force was automatically adjusted to determine the requested horizontal strain or deformation value [23].…”

Section: Resilient Modulus Testmentioning

confidence: 99%

Evaluation of the Permanent Deformations and Aging Conditions of Batu Pahat Soft Clay-Modified Asphalt Mixture by Using a Dynamic Creep Test

Allam

Masirin

Abdullah

et al. 2016

MATEC Web of Conferences

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Abstract. This study aimed to evaluate the permanent deformation and aging conditions of BatuPahat soft clay-modified asphalt mixture, also called BatuPahat soft clay (BPSC) particles; these particles are used in powder form as an additive to hot-mix asphalt mixture. In this experiment, five percentage compositions of BPSC (0%, 2%, 4%, 6%, and 8%) by weight of bitumen were used. A novel design was established to modify the hot-mix asphalt by using the Superpave method for each additive ratio. Several laboratory tests evaluating different properties, such as indirect tensile strength, resilient stiffness modulus, and dynamic creep, was conducted to assess the performance of the samples mixed through the Superpave method. In the resilient modulus test, fatigue and rutting resistance were reduced by the BPSC particles. The added BPSC particles increased the indirect tensile strength. Among the mixtures, 4% BPSC particles yielded the highest performance. In the dynamic creep test, 4% BPSC particles added to the unaged and short-term aged specimens also showed the highest performance. Based on these results, our conclusion is that the BPSC particles can alleviate the permanent deformation (rutting) of roads.

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Effects of different polymers on mechanical properties of bituminous binders and hot mixtures

Cited by 56 publications

References 14 publications

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

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

Evaluation of the Permanent Deformations and Aging Conditions of Batu Pahat Soft Clay-Modified Asphalt Mixture by Using a Dynamic Creep Test

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