Effect of Devulcanized Rubber Modification on the Performance Grade, Fatigue Cracking Resistance, and Rutting Resistance of Asphalt Binders

Kocak, Salih; Kutay, M. Emin

doi:10.1061/(asce)mt.1943-5533.0003830

Cited by 20 publications

(2 citation statements)

References 10 publications

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“…Asphalt binder producers, especially, use CPG values to achieve cost-effective binder modifications. In the literature, there are researchers who apply the CPGs to determine the required amount of asphalt modifiers, such as styrene-butadiene-styrene (SBS) polymers, devulcanized rubber, or their combinations to acquire the asphalt binders with desired PG values [25,26]. In addition, some other researchers benefitted the CPG concept to compare the accuracy of testing equipment [27].…”

Section: Continuous High- Intermediate- and Low-performance Grade Tes...mentioning

confidence: 99%

Rheological Characterization of Ground Tire Rubber Modified Asphalt Binders with Parallel Plate and Concentric Cylinder Geometries

Kocak

2023

Sustainability

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Recently, scrap tire rubber-modified asphalt binders and pavements have been the preferred choice of state DOTs and parties involved due to the desirable engineering, as well as economic and environmental impacts. Rheological and mechanical properties of rubber modifications have been the main focus of researchers for the last couple of decades. This paper investigates the rutting potential, fatigue cracking resistance, and continuous performance grade (CPG) changes of waste tire rubber-modified, original, and aged asphalt binders. The CPG of asphalt binders is determined at high, intermediate, and low temperatures. A Delta T Critical comparison of the binder was carried out to establish a relationship between measured parameters. Linear amplitude sweep (LAS) tests at equi-stiffness temperatures were conducted to discover the fatigue life of all binders while the multiple stress creep recovery test is performed to assess the high-temperature rutting performance of asphalt binders as per the Superpave performance grading system at accepted regional (58 °C) as well as high PG temperatures. In addition, parallel-plate geometry and concentric cylinder geometry were used with the Multiple Stress Creep Recovery (MSCR) test to discover the impact of discrete particles available in crumb/ground tire rubber-modified asphalt binders as per standards. The results show that rubber modifications improved the base binder’s rutting resistance and continuous PGs without adversely affecting the fatigue cracking resistance. Based on the mathematical expressions developed, 2.71%, 7.82%, 12.94%, and 18.05% (by weight of binder), GTR modifications improved the high PG of the modified binders one, two, three, and four grade bumps, respectively. Similar linear correlations with R2 0.872 and 0.6 were established for continuous low and intermediate PGs, respectively. MSCR test results revealed that both 9% and 20% GTR modifications were achieved to enhance the H-grade traffic level of the original binder to E-grade.

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Section: Continuous High- Intermediate- and Low-performance Grade Tes...mentioning

confidence: 99%

Rheological Characterization of Ground Tire Rubber Modified Asphalt Binders with Parallel Plate and Concentric Cylinder Geometries

Kocak

2023

Sustainability

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“…DRMA shows improved properties, such as mechanical and rheological properties, aging resistance, rutting resistance, stability, moisture susceptibility, temperature sensitivity and durability, compared with traditional GTR-modified asphalt or base asphalt [ 49 , 50 , 51 , 52 , 53 ].…”

Section: Sustainability Of Rubberized Asphaltmentioning

confidence: 99%

Characterization, Properties and Mixing Mechanism of Rubber Asphalt Colloid for Sustainable Infrastructure

et al. 2022

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Rubber asphalt has always been considered to have the most potential for the disposal of waste tires as sustainable infrastructure. However, the covalently cross-linked tire rubber presents an extreme challenge in reusing waste rubbers in roads. Rubberized asphalt with finely dispersed or colloidal structure has been regarded as a potential binder used as road material because of the improved properties in terms of storage stability, easy processing and high content of incorporation. However, the mixing mechanism between the finely dispersed rubber on micro-nano scale with asphalt is still not clear, which restricts its further development as value-added material. Devulcanized rubber (DR) was introduced to improve the compatibility between asphalt and rubber. The basic chemicals of DR and asphalt were introduced based on their structures. Furthermore, the interactions between DR and asphalt were discussed according to the functional elements at different levels, and the concept of DR as “the fifth component” of asphalt was put forward. Finally, high performance, environmental and economic effects and applications of devulcanized-rubber-modified asphalt (DRMA) were discussed. The review is expected to provide a guide for the wide application of DRMA, which is still restricted by poor compatibility and bad stability during processing, storage and recycling.

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Devulcanized Tire Rubber–Waste Plastic Compounds: A Solution to Improve Storage Stability of Plastic-Modified Bitumen

Ibrahim,

Desidery,

Lanotte

2023

Int. J. Pavement Res. Technol.

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Effect of Devulcanized Rubber Modification on the Performance Grade, Fatigue Cracking Resistance, and Rutting Resistance of Asphalt Binders

Cited by 20 publications

References 10 publications

Rheological Characterization of Ground Tire Rubber Modified Asphalt Binders with Parallel Plate and Concentric Cylinder Geometries

Rheological Characterization of Ground Tire Rubber Modified Asphalt Binders with Parallel Plate and Concentric Cylinder Geometries

Characterization, Properties and Mixing Mechanism of Rubber Asphalt Colloid for Sustainable Infrastructure

Devulcanized Tire Rubber–Waste Plastic Compounds: A Solution to Improve Storage Stability of Plastic-Modified Bitumen

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