Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials

Rath, Punyaslok; Love, Joshua E.; Buttlar, William G.; Reis, Henrique

doi:10.3390/su11061792

Cited by 36 publications

(20 citation statements)

References 37 publications

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“…The extension of this approach to modern, heterogeneous mixtures with RAP, GTR, and other components/additives is suggested by the results obtained in this study as well as others studies (Buttlar et al, 2019;Rath et al, 2019;Buttlar and Wang, 2016 slightly lower design air void level for high ABR mixes, perhaps 3.0 or 3.5%, applying this principle for mixtures containing both RAP and RAS.…”

Section: Dc(t) Fracture Test Resultssupporting

confidence: 66%

“…According to Brock (1998), a savings of $1 billion dollars annually could be realized by engineering RAS into asphalt mixtures in a comprehensive manner (Brock, 1998). Owing to the regional use of RAS worldwide (most prevalent in the Midwest and East Coast United States Rath et al, 2019;Williams et al, 2018;Buttlar and Wang, 2016)), somewhat limited research and field data regarding RAS are available compared to research on RAP.…”

Section: Introductionmentioning

confidence: 99%

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Recycled Asphalt Shingle Modified Asphalt Mixture Design and Performance Evaluation

Wang¹,

Rath²,

Buttlar³

2020

Preprint

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The inclusion of recycled asphalt shingles (RAS) in asphalt mixtures has become increasingly common; however, the underlying design principles vary significantly by agency. The primary objectives of this study included: (1) evaluating the ‘binder availability’ concept for RAS mixtures through a carefully designed laboratory experiment; (2) demonstrating a balanced mixture performance testing approach for the design of RAS mixtures; and (3) evaluating the field data of RAS mixtures placed in the Midwest region of the U.S. Three asphalt mixture designs with RAS contents of 0.0, 2.5 and 5.0%, which were designed to have nearly identical volumetric characteristics, were investigated. The binder availability was determined to be approximately 100% in the two RAS mixtures considered. In addition, Hamburg wheel tracking and disk-shaped compact tension tests were conducted to evaluate the high- and low-temperature mixture performance. As expected, the addition of RAS significantly improved the rutting resistance. DC(T) test results demonstrated that a soft base binder effectively permitted the design of thermal-crack-resistant RAS mixtures. Field investigations indicated that the performance of pavement surfaces containing RAS was similar to that of surfaces containing only reclaimed asphalt pavement or virgin materials. This study also highlights a performance-engineered mix design approach, which is currently being adopted by several agencies in the Midwest (e.g. Illinois Tollway, Missouri DOT, etc.) and can provide mix designers a reliable approach for designing innovative asphalt mixtures with higher recycling levels and a modern, heterogeneous composition. Furthermore, the proposed approach may prove to be a simpler, more mixture-centric alternative to the primary method suggested in AASHTO PP78-17, which recommends arbitrary VMA bumping plus binder extraction, recovery, and advanced binder testing.

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Section: Dc(t) Fracture Test Resultssupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Recycled Asphalt Shingle Modified Asphalt Mixture Design and Performance Evaluation

Wang¹,

Rath²,

Buttlar³

2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The application of reclaimed asphalt pavement (RAP) in asphalt mixtures has been vigorously encouraged and promoted over the past decades due to the desirable environmental benefit, along with the cost reduction [1][2][3][4]. The use of RAP has been promoted from low-value use (as unbound layer materials [5], etc.)…”

Section: Introductionmentioning

confidence: 99%

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Zhang

et al. 2020

Materials

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Incorporating reclaimed asphalt pavement (RAP) into asphalt mixtures achieves astonishingly environmental and economic benefits. However, there is hesitation to use higher RAP content due to the concern regarding the deterioration in pavement performance, especially the cracking resistance. Basalt fiber has been considered an effective additive to reinforce the performance of asphalt mixtures and, subsequently, the reinforcement effect is also expected for high-RAP content mixtures. Therefore, this study investigated the effect of basalt fiber on the pavement performance of asphalt mixtures with 0%, 30%, 40%, and 50% RAP contents against high-temperature performance, moisture susceptibility, low-temperature and intermediate-temperature cracking resistance, based on the wheel-tracking test, the uniaxial penetration test, the freeze-thaw splitting test, the low-temperature bending beam test, the semicircular bend fracture test and the indirect tensile asphalt cracking test, respectively. In addition, a performance-space diagram was developed to determine the mixture performance shift caused by basalt fiber. The results showed that adding basalt fiber compensated for the detrimental effect caused by RAP, leading to significant enhancement in moisture susceptibility and low- and intermediate-temperature cracking resistance of mixtures with high RAP content, along with the enhancement in high-temperature performance, indicating that basalt fiber can contribute to the use of high RAP content.

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“…Asphalt has been widely used in airfield and high-grade road pavement due to its numerous advantages such as smoothness, low-vibration, high-automated construction, and easy maintenance [1][2][3][4]. Worldwide, annually, over 86 million tons of asphalt binder is combined with gravel or sand to pave roads [5][6][7]. However, it has been observed that the production of asphalt requires a major expenditure of natural resources, and the associated mining, refining, production, and construction produce considerable greenhouse gas emissions [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Using Sustainable Oil Shale Waste Powder Treated with Silane Coupling Agent for Enriching the Performance of Asphalt and Asphalt Mixture

Guo

Chen

Li³

et al. 2019

Sustainability

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The increase in cost of bitumen and polymer modifiers and the importance of silicon waste material management have encouraged pavement researchers to use reusable sustainable sources. Oil shale waste powder (OSP) is considered a silicon waste material, and when used in pavement prevents leaching. However, OSP, as an acidic inorganic material, has compatibility issues with asphalt, and its use with ashpalt should be considered carefully. This paper investigates the pavement performance and modification mechanism of OSP and silane coupling agent (SCA) composite modified asphalt and asphalt mixture according to conventional physical property tests: thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and a pavement performance test. The test results showed that the incorporation of OSP and SCA improved the overall properties of asphalt and asphalt mixture and the direct mixing method is more effective than the surface pretreatment method for the modification of composite modification of asphalt. Moreover, the FTIR test and DSC test indicated that the incorporation of OSP and SCA creates new chemical bonds and changes the form and quantity of the crystalline component and the transformation of components in the bitumen.

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Performance Analysis of Asphalt Mixtures Modified with Ground Tire Rubber Modifiers and Recycled Materials

Cited by 36 publications

References 37 publications

Recycled Asphalt Shingle Modified Asphalt Mixture Design and Performance Evaluation

Recycled Asphalt Shingle Modified Asphalt Mixture Design and Performance Evaluation

Performance Characterization of Hot Mix Asphalt with High RAP Content and Basalt Fiber

Using Sustainable Oil Shale Waste Powder Treated with Silane Coupling Agent for Enriching the Performance of Asphalt and Asphalt Mixture

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