Damping and Toughening Effect of the Reinforcements on the Epoxy Modified Recycled + Devulcanized Rubber Based Composites

2018 ◽  
pp. 147-158
Author(s):  
A. B. Irez ◽  
E. Bayraktar ◽  
I. Miskioglu
Keyword(s):  
Devulcanized Rubber

The effect of adding devulcanized rubber on the thermomechanical properties of recycled polypropylene

2021 ◽  
Vol 138 (29) ◽  
pp. 50703
Author(s):  
Pamela Sierra Garcia ◽  
Juliana Aristéia Lima ◽  
Carlos Henrique Scuracchio ◽  
Sandra Andrea Cruz
Keyword(s):  
Thermomechanical Properties ◽  
Recycled Polypropylene ◽  
Devulcanized Rubber

Evaluation of the Role of Devulcanized Rubber on the Thermo-mechanical Properties of Polystyrene

2020 ◽  
Vol 28 (6) ◽  
pp. 1737-1748 ◽  
Author(s):  
F. Valentini ◽  
A. Dorigato ◽  
A. Pegoretti
Keyword(s):  
Mechanical Properties ◽  
Devulcanized Rubber

Laboratory Evaluation of Rubberized Binder and Mix Containing a Low Content of Devulcanized Rubber Modifier

2020 ◽  
Vol 2674 (11) ◽  
pp. 53-63
Author(s):  
Yanlong Liang ◽  
David Jones ◽  
John T. Harvey ◽  
Jeffery Buscheck
Keyword(s):  
Asphalt Binder ◽  
Fatigue Cracking ◽  
Laboratory Evaluation ◽  
Rubber Content ◽  
Area Index ◽  
Lower Phase ◽  
Waste Tires ◽  
Stiffness Reduction ◽  
Rubber Particles ◽  
Devulcanized Rubber

This paper evaluates the mechanical properties of rubberized asphalt binder and mix containing 5% and 10% rubber. This rubberized asphalt binder was manufactured in a field-blend process using devulcanized rubber particles, finer than 250 microns, derived from waste tires. Comparison between the rubberized binder and the base binder test results showed that the rubberized binders had higher complex moduli and lower phase angles at the grade temperature. They also had a higher percentage recovery in the multiple stress creep recovery test, and a significant creep stiffness reduction in the bending beam rheometer test. Given the low rubber content and small rubber particle size, this rubberized binder can be used in dense-graded mixes, whereas asphalt rubber binders, with larger rubber particles and higher rubber content (>15%), must be used in gap- or open-graded mixes. This rubberized dense-graded mix met the volumetric design criteria at the same binder content as the control mix prepared with the unmodified base binder. Laboratory tests on the mix included repeated load triaxial, Hamburg wheel track, flexural dynamic modulus, and beam fatigue. The rubberized mixes had slightly lower stiffnesses than the control mix, but better resistance to moisture damage, rutting, and fatigue cracking. A strong linear correlation was found between the carbonyl area index and the rheological properties of the long-term aged binder and fatigue life of the mixes. Based on these findings, these rubber-modified binders can be considered for use in dense-graded mixes to improve overall performance and make use of waste tires.

Tire-Rubber-Waste Recycling and Active Powder of Discretely Devulcanized Rubber

2018 ◽  
Vol 11 (3) ◽  
pp. 323-329 ◽  
Author(s):  
A. A. Berlin ◽  
T. V. Dudareva ◽  
I. A. Krasotkina ◽  
V. G. Nikol’skii
Keyword(s):  
Waste Recycling ◽  
Tire Rubber ◽  
Rubber Waste ◽  
Devulcanized Rubber

Devulcanization of Waste Tire Rubber by Powerful Ultrasound

1996 ◽  
Vol 69 (1) ◽  
pp. 92-103 ◽  
Author(s):  
A. Tukachinsky ◽  
D. Schworm ◽  
A. I. Isayev
Keyword(s):  
Crosslink Density ◽  
Continuous Process ◽  
Operating Parameter ◽  
Rubber Crumb ◽  
Screw Extruder ◽  
Tire Rubber ◽  
Rubber Tire ◽  
Treatment Conditions ◽  
Wide Range ◽  
Devulcanized Rubber

Abstract Ground rubber tire (GRT) is devulcanized in a continuous process where the rubber crumb is conveyed by a screw extruder to a thin gap between a stationary die and a vibrating horn. Ultrasound amplitude, gap thickness and the duration of the treatment are varied, and their effect on the rubber properties is studied. The degree of devulcanization is characterized by the crosslink density and gel fraction of the devulcanized rubber. These characteristics are found to correlate uniquely with each other over a wide range of the treatment conditions. The specific energy of ultrasound consumed per unit mass of the rubber is found to be the operating parameter correlating with the properties of the devulcanized rubber. The mechanical properties of the re-vulcanized samples reach a maximum with an increasing degree of devulcanization, and then drop as a result of excessive degradation. Even without optimization of cure recipes, tensile strength and ultimate elongation of re-vulcanized tire rubber as high as 10.5 MPa and 250%, respectively, are achieved.

scholarly journals Devulcanized Rubber a Solution for Scrap Tire

2021 ◽  
Author(s):  
Abdalrahman Alsulaili ◽  
Dalal Alsuwail ◽  
Amina A Helal ◽  
Shoug Al Dabbous ◽  
Rahaf Al Omar ◽  
...  
Keyword(s):  
Scrap Tire ◽  
Devulcanized Rubber

scholarly journals 2D and 3D imaging of the deformation behavior of partially devulcanized rubber/polypropylene blends

2018 ◽  
Vol 12 (12) ◽  
pp. 1047-1060 ◽  
Author(s):  
P. S. Garcia ◽  
R. F. Gouveia ◽  
J. M. Maia ◽  
C. H. Scuracchio ◽  
S. A. Cruz
Keyword(s):  
Deformation Behavior ◽  
3D Imaging ◽  
Polypropylene Blends ◽  
2D And 3D ◽  
Devulcanized Rubber
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