Rheological characterization of EVA and HDPE polymer modified bitumens under large deformation at 20 °C

González, Emma; Costa, Lucrécio; Silva, Hugo Manuel Ribeiro Dias da; Hilliou, L.

doi:10.1016/j.conbuildmat.2016.02.192

Cited by 22 publications

(5 citation statements)

References 20 publications

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“…An increment in the ductility values of around 20% has been found when using 5% EVA, and an even greater increment (140%) when the EVA was grafted with 2% of maleic anhydride [62]. The complex modulus also experiences a rise and the phase angle decreases when compared with the base binder; however, they do not exceed or overlay the values of a commercial PMB or those found for a bitumen with a lower penetration grade [17,32], but still improves the rutting resistance of the pavement at high temperatures. When the percentage of EVA remains fixed and only the amount of vinyl-acetate Sustainability 2019, 11, 646 9 of 20 (VA) contained in the EVA is varied, the greater the percentage of VA, the lower the complex modulus.…”

Section: Ethyl Vinyl Acetate (Eva)mentioning

confidence: 91%

“…This favors the use of this modification technique, facilitating the employment of recycled polymers [14,15]. However, the majority of the published studies have preferred the use of Sustainability 2019, 11, 646 3 of 20 the wet process [11,16,17], as it leads to a larger degree of modification of the binder and; therefore, to a better use of the reclaimed polymers (RP) to improve its properties. Nonetheless, if the reclaimed polymer modified binder (RPMB) produced by the wet process is stored at high temperatures without agitation, some phase separation could appear, resulting in heterogeneous bitumen that cannot be used for the manufacture of bituminous mixtures [18,19].…”

Section: Introductionmentioning

confidence: 99%

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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: Ethyl Vinyl Acetate (Eva)mentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…Jorshari et al measured the nonlinear rheological behavior of SBS modified bitumen under LAOS and compared the first, the third and the fifth harmonic moduli [32,33]. González et al tested the rheological characterization of neat bitumen and EVA, HDPE polymer modified bitumen with the LAOS-FTR method, and showed that polymer modified bitumen exhibits higher harmonics (In/I1 with 3≤n≤9), such that this method could quantitatively differentiate between the tested binders [34].…”

Section: ⅰ Introductionmentioning

confidence: 99%

Nonlinear rheological behavior of bitumen under LAOS stress

Shan

Wagner

et al. 2018

Journal of Rheology

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Synopsis The linear viscoelasticity and steady shear properties of bitumen are established, however, bitumen used in pavement also supports time-varying loading in the nonlinear regime. Consequently, recent research focuses on the nonlinear rheological behavior of bitumen under time-varying flows that is essential for establishing the constitutive model. Here we propose a protocol to obtain the nonlinear rheological behavior of bitumen from such as under large amplitude oscillatory shear stress (LAOS stress). The LAOS stress rheological response of both a neat bitumen and a modified bitumen are analyzed by FT-rheology and strain decomposition to an orthogonal set of Chebyshev polynomials. We find that the relative nonlinearity of bitumen increases with increase in stress and decrease in frequency; the relationship between I3/I1 and stress amplitude can obey the sigmoidal function; the intrinsic nonlinearity Q0 decreases with increase in frequency and decrease in temperature. Both the FT analysis results and decomposition results show that the nonlinearity of modified bitumen B is much more significant than neat bitumen A. Bitumen A exhibits stress softening and stress thinning under all the studied test conditions, but bitumen B exhibits stress stiffening under some conditions.

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“…Many studies have been conducted on the development of properties of HMA mixtures at high and intermediate temperatures. High-density polyethylene (HDPE), styrene butadiene styrene, ethylene vinyl acetate and crumb rubber (CR) modifiers do have significant influence on the characteristics of asphalt pavement, in terms of improving the deformation resistance and high- and intermediate-temperature performance (Attaelmanan et al , 2011; González et al , 2016; Xu et al , 2016; Yu et al , 2016). In the recent years in Texas with the high summer pavement temperatures (more than 50°C), several rutting failures of HMA mixture happened in the field, although the mixture had passed the rutting test in the lab.…”

Section: Introductionmentioning

confidence: 99%

Influence of high temperature on the stability performance of high density polyethylene and crumb rubber powder modified HMA mixture

Gibreil

Feng

2017

JSFE

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Purpose In high-temperature regions (tropical regions) temperatures rises in summer, which affects the performance of asphalt pavement. Therefore, we must consider the conditions of asphalt pavement, especially in these regions. This study aims to investigate the influence of high temperature on the stability performance of high-density polyethylene (HDPE) and crumb rubber powder (CRP) modified hot mix asphalt (HMA) using Marshall design parameters and rutting test. Design/methodology/approach In this study, three HMA mixtures with 4 per cent HDPE and 15 per cent CRP, 5 per cent HDPE and 10 per cent CRP, and 6 per cent HDPE and 5 per cent CRP concentrations were used for the Marshall stability test and dynamic stability (rutting test) at 60-75°C, and water stability test at 60°C. Findings The results showed that when test temperature was increased from 60°C to 75°C, the Marshall stability and dynamic stability of three HDPE- and CRP-modified HMA mixtures decreased, and these three HDPE- and CRP-modified HMA mixtures have a good moisture damage resistance. Of the three HMA mixtures with different HDPE and CRP concentrations, HMA mixtures with 5 per cent HDPE and 10 per cent CRP concentration exhibit optimal Marshall stability, dynamic stability and water stability. Originality/value This study showed the effects of high-temperatures changes on the stability performance of HDPE- and CRP-modified HMA mixtures.

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Rheological characterization of EVA and HDPE polymer modified bitumens under large deformation at 20 °C

Cited by 22 publications

References 20 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

Nonlinear rheological behavior of bitumen under LAOS stress

Influence of high temperature on the stability performance of high density polyethylene and crumb rubber powder modified HMA mixture

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