Rheology and storage stability of modified binders with waste polymers composites

Nasr, Danial; Pakshir, Amir Hossein

doi:10.1080/14680629.2017.1417152

Cited by 39 publications

(25 citation statements)

References 20 publications

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“…e bitumen test results are shown in Figures 3-5 where using PET and CR with the original bitumen improved its rheological behavior; the penetration grade was reduced and the softening point was increased due to, probably, the binder stiffening. According to the results, the bitumen stiffness increased as the percent PET/rubber increased [30][31][32][33]. Earlier studies had indicated that the PET-/CR-modified bitumen has higher resistance to rutting and fatigue cracking compared with the virgin type [30].…”

Section: Binder Test Resultsmentioning

confidence: 99%

“…e NCHRP Report No. 425 was used to design and fabricate the SMA mixtures [30]. e SMA design is based on the volumetric properties of the mixture.…”

Section: Sample Preparationmentioning

confidence: 99%

“…Results of [29] indicated that compared to PG 64-22, PG 70-28 and 76-28 performed better with different ASA percentages. In [30], the authors studied the combined PET-CR effects on high and medium temperature behavior of two original bitumen types.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Influence of Antistripping Agents on Water Sensitivity of the Stone Matrix Asphalt Mixture Modified by Recycled Ground Tire Rubber and Waste Polyethylene Terephthalate

Ameli

Babagoli

2021

Advances in Materials Science and Engineering

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This research intends to evaluate the effects of the waste polyethylene terephthalate (PET), antistripping agents (ASA), and ground tire rubber (GTR) on the performance properties of the stone matrix asphalt (SMA) mix binder/water damage resistance. Liquid antistripping agents, added to 85/100 penetration grade binder to evaluate the ASA effects, were A (M500), B (EvothermM1), and C (LOF-6500). Tests conducted to study the modified bitumen’s rheological properties included softening point, penetration, rotational viscosity (RV), and dynamic shear rheometer (DSR), and tests performed in order to examine the moisture sensitivity of the modified mix were the Texas boiling and resilient modulus (MR), fracture energy (FE), and indirect tensile strength (ITS) ratio tests. Results showed that the MR, ITS, and FE of asphalt mixes modified with crumb rubber (CR), ASA, and PET were improved. Adding 50% PET, 50% CR, and ASA (B) led to the highest tensile strength, resilient modulus, and fracture energy ratios showing a perfect water susceptibility of the mentioned mix.

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Section: Binder Test Resultsmentioning

confidence: 99%

“…e NCHRP Report No. 425 was used to design and fabricate the SMA mixtures [30]. e SMA design is based on the volumetric properties of the mixture.…”

Section: Sample Preparationmentioning

confidence: 99%

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Evaluation of the Influence of Antistripping Agents on Water Sensitivity of the Stone Matrix Asphalt Mixture Modified by Recycled Ground Tire Rubber and Waste Polyethylene Terephthalate

Ameli

Babagoli

2021

Advances in Materials Science and Engineering

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“…According to previous studies [36,37], the complex shear modulus seemed to be a more reliable parameter to investigate the component variation of test binders. Therefore, the separation index (SI, Equation (2)) was proposed based on the complex modulus results by strategic highway research program (SHRP).…”

Section: Complex Shear Modulusmentioning

confidence: 97%

Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification

Ren

Zhu

Wu³

et al. 2020

Nanomaterials

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The storage stability concern, caused by phase separation for the density difference between polymers and asphalt fractions, has limited the widespread application of polymer modified asphalt (PMA). Therefore, this study aims to improve the storage concern of PMA by incorporating nano-montmorillonite. To this end, different nano-montmorillonites were incorporated to three PMAs modified with three typical asphalt modifiers, i.e., crumb rubber (CRM), styrene–butadiene-rubber (SBR) and styrene–butadiene-styrene (SBS). A series of laboratory tests were performed to evaluate the storage stability and rheological properties of PMA binders with nano-montmorillonite. As a consequence, the incorporation of nano-montmorillonite exhibited a remarkable effect on enhancing the storage stability of the CRM modified binder, but limited positive effects for the SBR and SBS modified binders. The layered nano-montmorillonite transformed to intercalated or exfoliated structures after interaction with asphalt fractions, providing superior storage stability. Among selected nano-montmorillonites, the pure montmorillonite with Hydroxyl organic ammonium performed the best on enhancing storage stability of PMA. This paper suggests that nano-montmorillonite is a promising modifier to alleviate the storage stability concern for asphalt with polymer modifiers.

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“…[107] Reacting BHETA with a diisocyanate in situ in the binder yielded a performance similar to that found with SBS terpolymers, which is not surprising since both belong to the broader polymeric category of thermoplastic elastomers. [108] Waste tire rubber and various polymers (HDPE, [73,109] LDPE and LLDPE, [110] EPDM and HDPE, [111] PET [92,105,112] have been examined extensively. As the addition of rubber is beyond the scope of this review a detailed description will not be provided, however the effect is as one would expect in terms of increasing resilience.…”

Section: Other Strategiesmentioning

confidence: 99%

Waste plastics in asphalt concrete: A review

Grady

2021

SPE Polymers

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Among possible applications for post-consumer waste plastics, one criterion is that the application should be able to use very large amounts of material because the amount of plastic waste is so large. Another key issue is economics; very little cost should be involved in preparing waste plastics for a specific application. One of the few applications for post-consumer waste plastics that could possibly meet both requirements is filler in asphalt concrete. Specifically, if waste plastics in asphalt concrete were 10 wt%, then this application alone could use all plastic waste currently being produced in the world. This review examines the progress that has been made to incorporate waste plastics into asphalt concrete and identifies key issues preventing this technology from being applied commercially.

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Rheology and storage stability of modified binders with waste polymers composites

Cited by 39 publications

References 20 publications

Evaluation of the Influence of Antistripping Agents on Water Sensitivity of the Stone Matrix Asphalt Mixture Modified by Recycled Ground Tire Rubber and Waste Polyethylene Terephthalate

Evaluation of the Influence of Antistripping Agents on Water Sensitivity of the Stone Matrix Asphalt Mixture Modified by Recycled Ground Tire Rubber and Waste Polyethylene Terephthalate

Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification

Waste plastics in asphalt concrete: A review

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