Rheological performance of soft and rigid waste plastic-modified bitumen and mastics

Russo, Francesca; Veropalumbo, Rosa; Viscione, Nunzio; Oreto, Cristina; Biancardo, Salvatore Antonio

doi:10.1016/b978-0-323-85789-5.00004-6

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…In order to study the viscoelastic properties of an asphalt material at different stress and strain levels, the behavior of the material must still be linear; that is, the relationship between stress and strain must only be affected by temperature and loading time and not by the magnitude of the stress or strain [27]. Previous studies have employed rheological analysis to gauge how well the new mixes performed after recycled materials were added as a binder [15,[18][19][20][21][22][23][24]27]. The rheological characteristics of a specimen's complex shear modulus (G*), phase angle (δ), and viscosity (µ) were measured using a dynamic shear rheometer.…”

Section: Resultsmentioning

confidence: 99%

The Utilization of Waste Toner as a Modifier in Trinidad Asphalts

et al. 2022

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As more persons are adjusting to home working in light of the COVID-19 pandemic, there has been a significant increase in the use of technology. Trinidad and Tobago, like many other Small Island Developing States, began exploring strategies in the areas of recycling and reuse techniques to mitigate negative environmental impacts from the disposal of waste toners. The reuse of waste toners as a performance enhancer in bituminous materials has successfully been achieved in foreign jurisdictions; however, the lack of research on the utilization of the indigenous Trinidad Lake Asphalt (TLA) and Trinidad Petroleum Bitumen (TPB) has stymied the application of this strategy locally. The influence of four waste toners (A, B, C, and D) on the rheological properties of an unmodified TLA/TPB paving binder was measured using the dynamic shear rheology (DSR) testing technique. The addition of waste toners noted improvements in the rheological parameters of stiffness, elasticity, and viscosity, exhibiting superior temperature susceptibility. Of great interest was the observation at 90 °C, where the modified paving binders containing 5% Toner C and 20% Toner D were elastically superior to the world-renowned TLA. This study demonstrated the potential of utilizing waste toner as a bitumen modifier, providing an innovative, sustainable disposal option.

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Section: Resultsmentioning

confidence: 99%

The Utilization of Waste Toner as a Modifier in Trinidad Asphalts

et al. 2022

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“…Resin-based asphalt modifications include the addition of polyethylene (PE) and ethylene-vinyl acetate copolymer (EVA) [14]. For example, Rosa Veropalumbo and Russo, F. et al [15][16][17] have been working on the incorporation of polymer-functional plastic waste into asphalt mixtures to improve the performance of pavement layers. Since the asphalt-based sealant material prepared with a single modifier has disadvantages in terms of performance, and the single modifier is expensive, some low-cost modifiers need to be used to reduce costs; therefore, composite modification has been developed and applied [14].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the High-Temperature and Rheological Properties for Asphalt Sealant Modified by SBS and Rubber Crumb

Gong

Zhang

et al. 2022

Polymers

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Crack sealing is an important measure for pavement maintenance. Hot-poured crack sealant is the most utilized material for crack sealing. However, its poor high-temperature and rheological properties seriously weaken the mechanical properties of repaired pavement. Thus, to overcome the disadvantage of the poor high-temperature and rheological properties of sealant, styrene–butadiene–styrene (SBS) and rubber crumb (CR) were utilized for modifying the asphalt-based sealants. Softening point tests, temperature tests, frequency scan tests, and multiple stress creep recovery tests (MSCR) were conducted to evaluate the high-temperature and rheological properties of the modified sealant. Additionally, the influence of SBS and CR on the high-temperature performance of the modified sealant was quantitatively analyzed by the grey relational analysis method. The results reveal that the SBS has a greater enhancement effect on the high-temperature performance of sealant than CR. Increasing the SBS and CR content in the sealant could enhance the sealant’s high-temperature performance, stiffness, and elasticity. Compared with asphalt-based sealant and one-component modified asphalt-based sealant, SBS/CR-modified asphalt sealant has greater viscosity and higher temperature deformation resistance. Additionally, SBS can increase the stress level of the sealant, thereby enhancing the resistance of the sealant to permanent deformation.

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