Investigation of shear complex modulus and phase angle values of short- and long-term aged polymer modified bitumens at different frequencies

Alataş, Taner; Yilmaz, Mesude; Kuloğlu, Necati; Çakiroğlu, Mehmet Alphan; Geçkil, Tacettin

doi:10.1007/s12205-014-0287-7

Cited by 7 publications

(3 citation statements)

References 6 publications

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“…In recent years, generally polymers, have very long chain molecules consisting of several ordered small molecules, are used for the modification of bitumen [7]. The prevalent used polymers from the group of elastomeric block copolymers [8] and Styrene-Butadiene-Styrene (SBS) belongs to this group enhances the elasticity of bitumen. However, weak compatibility between SBS and bitumen causes separations especially at high storage temperatures.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance Testing of SBS Modified Bitumens Reinforced with Halloysite and Sepiolite Nanoclays

2022

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In this study, halloysite and sepiolite nanoclays were used to reinforce SBS modified bitumens. The nanoclays used are different from the materials in the literature and have properties such as easy to find, economical and available from local sources. The mixing parameters were determined before production process. The polymer additive SBS was added into base bitumen at 3% and 5%, the nanoclay additives were added into polymer modified bitumen at 2% and 4% ratios. The morphological structures were investigated under fluorescence microscope. Physical and rheological properties of the samples were compared. The phase separation cases were investigated by storage stability test. Furthermore, rutting performance of samples was measured with zero shear viscosity (ZSV) and multi stress creep recovery (MSCR) test methods.

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Section: Introductionmentioning

confidence: 99%

Preparation and Performance Testing of SBS Modified Bitumens Reinforced with Halloysite and Sepiolite Nanoclays

2022

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“…The results showed that the shear complex modulus (G*) of unaged, shortand long-term aged binders reduced and the phase angle (δ) of those increased. The G*/sinδ values increased with the addition of modifiers to the base bitumen (Alatas et al, 2014). Fan et al (2017) also researched the effect of VA content on rheology, compatibility and conventional properties of EVA modified asphalt.…”

Section: Introductionmentioning

confidence: 99%

Study on rheological properties of EVA modified asphalt based on fractional derivative theory

Li¹,

Xia²

2021

IJCIS

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Based on the fractional derivative theory, the relation between fractional derivative operator and power function empirical creep equation has been established. And the physical meaning of the power function parameters has been clarified. Ethylene-vinyl acetate (EVA) has been used as additives to prepare modified asphalt with content of EVA modifier varying from 0% to 9% in increments of 3% by weight of asphalt. Dynamic frequency sweep tests have been conducted on EVA modified asphalt using dynamic shear rheometer at 30ºC, 40ºC, 50ºC, and 60ºC. The complex shear modulus and the rutting factor of the asphalt modified by EVA increase with the increase of EVA content and decrease with the increase of temperature. The results indicate that the EVA modified asphalt reduced thermal sensitivity and increased resistance to permanent at high temperatures. Also, the power function parameters of EVA modified asphalt have been studied and analysed based on fractional derivative theory.

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“…The polymer modified asphalt binder used in pavements can decrease the temperature susceptibility as well as increase the rutting resistance [3]. Waste tires consist of polymers, and crumb rubber modifier (CRM) has been used widely by many highway agencies to surpass the characteristics of the unmodified binder [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Rheological Properties of Crumb Rubber with Different Recycled Waste Tires Modified Binders

Chen

Liu

et al. 2018

MSF

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In this study, three typical tires from bicycles, passenger-cars and trucks were collected and ground into crumb rubber modifiers (CRM) with different particle sizes to modify the asphalt binder. The composition and surface morphology of the three CRMs were analyzed by thermogravimetric analysis (TG-MS) and scanning electron microscopy (SEM). The rheological properties of the binder were evaluated using a dynamic shear rheometer (DSR) and a bending rheometer (BBR). The results show that the main rubber compositions in the bicycle tire (B), the passenger tire (P) and the truck tire (T) are butyl rubber (IIR), styrene-butadiene rubber (SBR) and natural rubber (NR), respectively. Adding CRMs improve rheological properties of base binder. Due to the differences between the composition and the structure, the rheological properties of the P CRM and T CRM containing more SBR and more NR are better at high temperatures and lower temperatures, respectively. And finally the CRM resources and particle size determine the rheological properties of modification effect of base binder. The results can be used to guide the classification and disposal of waste tires. According to the expected modification effect of the asphalt binder, the productions of asphalt pavement construction are enhanced by the high quality products of CRMs.

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Investigation of shear complex modulus and phase angle values of short- and long-term aged polymer modified bitumens at different frequencies

Cited by 7 publications

References 6 publications

Preparation and Performance Testing of SBS Modified Bitumens Reinforced with Halloysite and Sepiolite Nanoclays

Preparation and Performance Testing of SBS Modified Bitumens Reinforced with Halloysite and Sepiolite Nanoclays

Study on rheological properties of EVA modified asphalt based on fractional derivative theory

The Rheological Properties of Crumb Rubber with Different Recycled Waste Tires Modified Binders

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