Rheological properties of asphalt binders modified with styrene-butadiene-styrene (SBS), ground tire rubber (GTR), or polyphosphoric acid (PPA)

Behnood, Ali; Olek, Jan

doi:10.1016/j.conbuildmat.2017.06.115

Cited by 192 publications

(77 citation statements)

References 25 publications

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“…The crossover frequency (ωc) is related to the overall hardness of the binder. As the crossover frequency decreases, the binder hardness increases and thus the rutting resistance . The mechanical properties of asphalt in the glassy region are poorly affected by polymer modifiers (Figure , Table ) …”

Section: Resistance To Permanent Deformationmentioning

confidence: 99%

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Vargas

Benvenuta‐Tapia

Sánchez

et al. 2018

J of Applied Polymer Sci

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In this work, asphalt modifiers consisting of a series of poly(glycidyl methacrylate‐ran‐styrene)‐block‐poly(butyl acrylate)‐block‐poly(glycidyl methacrylate‐ran‐styrene) tri‐block copolymers (GS‐BA‐GS) were synthesized via reversible addition‐fragmentation chain transfer polymerization. Particular attention is given to the influence of controlled copolymer structures on the physical properties, morphology, thermal stability, and rheological behavior of the asphalt blends. Results show that the degree of asphalt modification is a function of the copolymer structure in relation to the epoxide content in the chain ends of the copolymers. The rheological, thermal, and microstructure analyses reveal that the addition of reactive copolymers increases chemical interactions with the polar fraction of asphalt. Absence of gelation in addition to improvements in viscosity, elasticity, storage stability are observed in the blends with GMA concentrations of 2%–4% with respect to copolymers without functional groups. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47201.

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Section: Resistance To Permanent Deformationmentioning

confidence: 99%

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Vargas

Benvenuta‐Tapia

Sánchez

et al. 2018

J of Applied Polymer Sci

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“…The new MSCR test, which is conducted based on AASHTO T 350-14, conducted 20 cycles 0.1 kPa stress loading and unloading. The MSCR test result may be different if conducted in accordance with AASHTON T 350 [44,45].…”

Section: Asphalt Binder Test Methodsmentioning

confidence: 99%

Effects of Titanate Coupling Agent on Engineering Properties of Asphalt Binders and Mixtures Incorporating LLDPE-CaCO3 Pellet

et al. 2018

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This study was initiated to evaluate the performance of asphalt binders and mixtures incorporating linear low-density polyethylene-calcium carbonate (LLDPE-CaCO 3 ) pellet, either with or without titanate coupling agent. The detailed manufacturing process of modifier pellets was displayed. The coupling agent was used to enhance the cross-linking between materials by means of winding up covalent bonds or molecule chains, thus improving the performance of composites. In the preparation of modified bitumen, the preheated asphalt binder was mixed with the modifiers using a high shear mixer at 5000 rpm rotational speed for 45 min. Experimental works were conducted to evaluate the performance of asphalt binders in terms of volatile loss, viscosity, rutting potential, and low temperature cracking. Meanwhile, the asphalt mixtures were tested using the flow number test and tensile strength ratio (TSR) test. The addition of LLDPE-CaCO 3 modifiers and coupling agent does not significantly affect the volatile loss of modified asphalt binders. The addition of modifiers and coupling agent has significantly improved the resistance to permanent deformation of asphalt binders. Even though, the addition of LLDPE-CaCO 3 modifier and coupling agent remarkably increased the mixture stiffness that contributed to lower rutting potential, the resistance to low temperature cracking of asphalt binder was not adversely affected. The combination of 1% coupling agent with 3% PECC is optimum dosage for asphalt binder to have satisfactory performance in resistance to moisture damage and rutting.

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“…In a study by Behnood and Olek (2017) on the rheological properties of modified binders with SBS, styrene-butadiene-styrene (SBS), ground tire rubber (GTR) or poly phosphoric acid (PPA), the results showed that all of the modifiers improve performance of neat binder in high temperatures, while SBS and PPA have no significant effect on binder performance in intermediate temperatures. Also, no modifiers have significant effect on the performance of binder at low temperatures [11]. Comparing SBS and crumb rubber (CR) modified Asphalt concretes showed that the CR modified mixtures are more recoverable and crack initiation resistance are higher in this mixture, while crack propagation resistance decrease in CR modified mixture [12].…”

Section: Polymer Modificationmentioning

confidence: 99%

“…SBS modified asphalt mixes are more elastic than SBR modified asphalts especially at high temperature while SBR modified asphalts have better ductility at low temperature [10]. In a study by Behnood and Olek (2017) on the rheological properties of modified binders with SBS, styrene-butadiene-styrene (SBS), ground tire rubber (GTR) or poly phosphoric acid (PPA), the results showed that all of the modifiers improve performance of neat binder in high temperatures, while SBS and PPA have no significant effect on binder performance in intermediate temperatures. Also, no modifiers have significant effect on the performance of binder at low temperatures [11].…”

Section: Polymer Modificationmentioning

confidence: 99%

Effect of SBS Polymer and Anti-stripping Agents on the Moisture Susceptibility of Hot and Warm Mix Asphalt Mixtures

Omrani¹,

Ghanizadeh

Tanakizadeh

2017

CivileJournal

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The primary objective of this study is exploring the moisture susceptibility of unmodified and SBS-modified hot and warm mix asphalt mixtures. To this end, two different WMA additives including Aspha-min and Sasobit were employed to fabricate WMA specimens. The moisture susceptibility of warm polymer modified asphalt (WPMA) mixes was evaluated using modified Lottman test at 25°C according to AASHTO standard (T 283). In addition, the effect of different percentages of hydrated lime (from 0% to 2%) and Zycosoil (from 0% to 0.1%) as anti-stripping additives on the moisture susceptibility of the mixtures was explored. Based on the ITS test results, WPMA prepared with Sasobit additive and polymer modified asphalt (PMA) mixes satisfied the desirable tensile strength ratio (TSR) (above 80%) but Aspha-min WPMA mixes had TSR lower than 80%.

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Rheological properties of asphalt binders modified with styrene-butadiene-styrene (SBS), ground tire rubber (GTR), or polyphosphoric acid (PPA)

Cited by 192 publications

References 25 publications

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Effects of Titanate Coupling Agent on Engineering Properties of Asphalt Binders and Mixtures Incorporating LLDPE-CaCO3 Pellet

Effect of SBS Polymer and Anti-stripping Agents on the Moisture Susceptibility of Hot and Warm Mix Asphalt Mixtures

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