Bitumen Modification

Slavgorodskaya, Olga I.; Bondaletov, V. G.; Ustimenko, Y P

doi:10.4028/www.scientific.net/amr.880.3

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…ere are numerous categories of modifiers used for bitumen modification, e.g., block copolymers: styrenebutadiene (SB), styrene-butadiene-styrene (SBS), and styrene-ethylene/butylene-styrene (SEBS); polyolefins; reactive ethylene terpolymer (RET); ethylene-vinyl acetate (EVA); and crumb rubber [4][5][6][7][8][9][10][11][12][13][14][15]. Polymer modifiers for bitumen binders that contain a large percentage of butadiene (50% by mass or greater) exhibit improved low-temperature properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Recycled Rubber on the Properties of Road Bitumen

Błażejowski

Gawdzik

Matynia

2018

Journal of Chemistry

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Commercially available road bitumen 50/70 (EN 12591) was modified by recycled rubber and synthetic poly(butadiene) in the presence of sulfur donor. Modification was carried out at 190°C and 220°C. Under such conditions, devulcanization of rubber took place. Prolonged heating in the presence of sulfur caused that devulcanized rubber and poly(butadiene) to revulcanize. e influence of rubber concentration as well as temperature and time of the modification process on the properties of resulted bitumens was studied. e results show that proposed process modifies the properties of base bitumen very effectively. Particularly noteworthy are values of Fraass breaking points, melting temperatures, penetrations, and elastic recoveries.

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Section: Introductionmentioning

confidence: 99%

Effect of Recycled Rubber on the Properties of Road Bitumen

Błażejowski

Gawdzik

Matynia

2018

Journal of Chemistry

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Hydrogenation of Indene–Coumarone Resin on Palladium Catalysts for Use in Polymer Adhesives

et al. 2019

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The Use of De-Vulcanized Recycled Rubber in the Modification of Road Bitumen

2020

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Rubber from recycled car tires and styrene-butadiene-styrene (SBS) were used for the chemical modification of commercially available road bitumen 50/70 (EN 12591). The modification process began with the addition of rubber into asphalt and heating the whole amount at the temperature of 190 °C or 220 °C. Under such conditions, de-vulcanization of rubber took place. Next, SBS and sulfur as a cross-linker were added and the heating was continued so that cross-linking of SBS and the de-vulcanized rubber proceeded. In the studies on the influence of rubber concentration on the final properties of asphalt 10% or 15% of rubber was considered. Chemical modification reactions were performed within 2, 4, and 8 h. The results showed that both the modification at 190 °C and 220 °C affected the properties of the base asphalt efficiently, although the asphalt modified at 190 °C contained more non-degraded rubber. Increasing the modification time led to dissolution of the rubber crumbs and its de-vulcanization. Bitumens modified in this way are characterized by high storage stabilities. Their behavior at low temperatures also deserves attention.

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Bitumen Modification

Cited by 3 publications

References 2 publications

Effect of Recycled Rubber on the Properties of Road Bitumen

Effect of Recycled Rubber on the Properties of Road Bitumen

Hydrogenation of Indene–Coumarone Resin on Palladium Catalysts for Use in Polymer Adhesives

The Use of De-Vulcanized Recycled Rubber in the Modification of Road Bitumen

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