Tire Crumb Rubber Effect on Hot Bituminous Mixtures Fatigue-Cracking Behaviour

Moreno-Navarro, Fernando; Rubio-Gámez, M.C.; Carrión, Ana Jiménez del Barco

doi:10.3846/13923730.2014.897982

Cited by 18 publications

(8 citation statements)

References 12 publications

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“…The addition of hydrated lime was found to improve the resistance of the CRM mixes to moisture damage. Moreno-Navarro et al [ 86 ] investigated the fatigue cracking potential of four different mixes with the same aggregate gradation but different binder types. It was concluded that the fatigue lives of mixes containing CR were considerably higher than those of conventional HMA.…”

Section: Gtr-modified Binders and Mixesmentioning

confidence: 99%

Technical Challenges of Utilizing Ground Tire Rubber in Asphalt Pavements in the United States

Ghabchi

Arshadi²,

Zaman

et al. 2021

Materials

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At least 275 million scrap tires exist in stockpiles in the U.S. The practice of dumping scrap tires in landfills has been an environmental concern. To address this concern, many industries—and regional and national environmental protection agencies—have taken major initiatives to recycle scrap tires. One of the major uses of recycled scrap tires is in crumb rubber products, including rubberized asphalt. Rubberized asphalt is produced by blending ground tire rubber with asphalt to beneficially modify its properties for highway construction. The ground tire rubber (GTR) can be used either as part of the asphalt rubber binder (also known as asphalt rubber), seal coat, cap seal spray, joint and crack sealant or as substitute aggregate (rubber-modified asphalt concrete). Therefore, the largest single market for GTR is asphalt rubber, which consumes approximately 12 million tires, annually. Currently, several Departments of Transportation (DOTs) in the U.S. do not allow use of GTR in asphalt mixes. This is partly due to lack of information, laboratory test data and specifications or special provisions on the use of GTR in asphalt pavements. The current study was undertaken to summarize the available wealth of knowledge, identify research needs, and document the major findings of previous pertinent studies focused on GTR use in asphalt. Significant study findings—consisting of laboratory test results, field observations, and common practices—were documented, including: the use of GTR in asphalt mixes, wet and dry processes, characterization of hot mix asphalt (HMA) containing GTR and GTR performance when combined with virgin materials. In order to promote successful use of GTR, it is imperative to help DOTs develop specifications/special provisions for utilizing rubberized asphalt by collecting data, common practices and specifications utilized by other state DOTs. As a part of this effort, we conducted a survey of construction specifications used by different DOTs that currently allow the use of GTR in asphalt. Since some DOT practices are not readily available in the open literature, this survey proved to be an effective tool for gathering data on the current practices, methods and specifications associated with DOT use of GTR in asphalt pavement.

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Section: Gtr-modified Binders and Mixesmentioning

confidence: 99%

Technical Challenges of Utilizing Ground Tire Rubber in Asphalt Pavements in the United States

Ghabchi

Arshadi²,

Zaman

et al. 2021

Materials

View full text Add to dashboard Cite

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“…The CRmodified bituminous binders tend to have higher viscosity, higher softening point and lower penetration in comparison with unmodified binders (Liang et al, 2015). The CR modification can improve the rheological properties of bitumen with an increase in complex modulus G* and a decrease in the phase angle, which may contribute to the fatigue and fracture resistance of asphalt mixtures (Moreno-Navarro et al, 2016;Amini and Imaninasab, 2018). Moreover, chemical treatment techniques were also adopted by researchers to prepare the CR-modified bitumen, which resulted in improved elastic recovery and showed good properties both in the lab and in the field tests (Shatanawia et al, 2013).…”

Section: Utilization Of Cr In Modified Asphalt Mixturesmentioning

confidence: 99%

Experimental Exploration of Influence of Recycled Polymer Components on Rutting Resistance and Fatigue Behavior of Asphalt Mixtures

Zhang

Liu

et al. 2020

J. Mater. Civ. Eng.

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Rutting and fatigue of asphalt pavements, as two important distresses, are significantly influenced by the properties of binders. This study aims to improve the rutting resistance and fatigue behavior of asphalt mixtures by using two recycled waste polymer components of recycled crumb rubber (CR) and polyethylene (PE). Their contribution and mechanisms on enhancing the pavement performance were evaluated, in particular rutting and fatigue behavior of asphalt mixtures. The assessed pavement properties of the modified asphalt mixtures were evaluated by wheel tracking, uniaxial penetration and four-point bending (4PB) tests. The experimental results showed that the integrated modification technique by functionally incorporating PE and CR can improve the rutting resistance of asphalt mixtures, and the PE dosage was a key variable. The integrated modification method can enhance the shear strength of asphalt mixtures at a high inservice temperature, indicating the potential to reduce the flow rutting of asphalt pavements. Meanwhile, both the CR and PE can increase the cohesive behavior of asphalt mixtures, while the friction angle value was mainly determined by PE. The addition of PE reduced the fatigue life of asphalt mixtures, while CR was able to improve the fatigue properties of the PE modified asphalt mixture. The findings of this study are beneficial to develop sustainable and durable asphalt pavements, to tailor the reuse of different types of polymer wastes in asphalt pavements as well as to minimize the waste disposal at landfills.

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“…Figure 10 shows the macro-cracks obtained in several asphalt mixture specimens manufactured with different binders. In this research study [17], four BBTM asphalt mixtures with the same mineral skeleton, but different types of bitumen (neat, polymer modified, crumb rubber modified wet and dry process) were studied by applying the UGR-FACT test procedure. Based on the findings of this study, it is clear that the type of binder used has an important influence on the fatigue cracking damage caused in a specimen (under the same loading conditions) and therefore on the service life of asphalt mixtures.…”

Section: Application Examplesmentioning

confidence: 99%

UGR-FACT test in the study of fatigue and cracking phenomena in asphalt pavements

Moreno-Navarro¹,

Rubio-Gámez²

2016

Proceedings of 6th Eurasphalt &Amp; Eurobitume Congress

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The understanding of fatigue and cracking phenomena is crucial to design more durable asphalt pavements. For this purpose UGR-Fact test has been recently developed. This paper describes this test method that consists of a device that is able to simulate traffic loading and climatic stresses in asphalt pavement at laboratory scale. The asphalt material is performed through a controlled fatigue cracking process that allows the analysis of the cracking propagation in the initiation, progression and failure stages. Among its main advantages to highlight: the test can be carried out in stress or strain controlled mode, it allows the study of laboratory specimens and also cores from pavements, multi-layers section can be analysed, it is easy to reproduce at a low economic cost. On the other hand the use of dissipated energy concepts in material fatigue processes establishes a series of parameters that accurately define the fatigue cracking performance of a bituminous mix

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Tire Crumb Rubber Effect on Hot Bituminous Mixtures Fatigue-Cracking Behaviour

Cited by 18 publications

References 12 publications

Technical Challenges of Utilizing Ground Tire Rubber in Asphalt Pavements in the United States

Technical Challenges of Utilizing Ground Tire Rubber in Asphalt Pavements in the United States

Experimental Exploration of Influence of Recycled Polymer Components on Rutting Resistance and Fatigue Behavior of Asphalt Mixtures

UGR-FACT test in the study of fatigue and cracking phenomena in asphalt pavements

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