A critical review of high polymer-modified asphalt binders and mixtures

Habbouche, Jhony; Hajj, Elie Y.; Sebaaly, Peter E.; Piratheepan, Murugaiyah

doi:10.1080/10298436.2018.1503273

Cited by 83 publications

(32 citation statements)

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“…To quantitatively analyze the effect of different aging degrees on the rheological properties of asphalt binders, AI was used to evaluate the aging degree, calculated by Equation (4). High values of this ratio indicate a relatively large degree of binder hardening [35,36].…”

Section: Aging Index (Ai)mentioning

confidence: 99%

“…Fortunately, research has found that high-performance asphalt binders can be obtained by the incorporation of polymers through a mechanical mixing or chemical reaction method [ 3 ]. Currently, various polymers have been used to modify the base asphalt, such as styrene–butadiene-styrene (SBS), styrene–butadiene rubber (SBR), and polyethylene (PE) to improve the performance of road pavement [ 4 ]. In addition, research shown that the content and type of the polymers in asphalt have a significant impact on the durability of asphalt pavements [ 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Phenolic Resin on the Rheological and Morphological Characteristics of Styrene-Butadiene Rubber-Modified Asphalt

Cheng

Zhang

2020

Materials

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To improve the thermal-aging stability and rheological performance of styrene–butadiene rubber (SBR)-modified asphalt, phenolic resin (PF) was introduced in the process of preparing SBR-modified asphalt by melt blending. The effect of PF and SBR on the high and low-temperature rheological performance of the asphalt binder before and after aging was evaluated by a temperature and frequency sweep using a dynamic shear rheometer (DSR). Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and fluorescence microscopy (FM) were used to further investigate the effect of PF and SBR on the thermal stability and morphological characteristics of the asphalt binder. The results showed that the addition of PF can enhance the high-temperature deformation resistance and short-term aging resistance of SBR-modified asphalt. Moreover, PF and SBR form an embedded network structure within the asphalt binder and alleviate the deterioration of the polymer during the aging process. Compared with SBR-modified asphalt, the chemical system of composite-modified asphalt is more stable, and it can remain stable with an aging time of less than 5 h.

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Section: Aging Index (Ai)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Phenolic Resin on the Rheological and Morphological Characteristics of Styrene-Butadiene Rubber-Modified Asphalt

Cheng

Zhang

2020

Materials

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“…An extensive review of the literature was conducted to compile all information and findings related to the performance of HP asphalt binders and mixtures. The findings from this literature review are provided in more detail in the provided references ( 1 – 3 ) and are briefly summarized here. The findings from the literature review are presented with respect to three areas of interest: the laboratory evaluation of HP asphalt binders and mixtures, the performance of pavement sections constructed with HP asphalt concrete (AC) mixtures, and the techniques to determine structural coefficient of HP AC mixtures ( 1 – 3 ).…”

mentioning

confidence: 99%

“…The reviewed laboratory studies indicated that increasing the styrene-butadiene-styrene (SBS) polymer content from 0%, 3%, 6%, to 7.5% tends to slow down the oxidative aging of the asphalt binder and continues to improve the performance properties of an asphalt binder and mixture ( 1 – 3 ). Moreover, several field demonstration projects were constructed in the U.S.A., Canada, South America, Europe, and Australia to evaluate the performance of HP AC mixtures.…”

mentioning

confidence: 99%

“…The review of these projects showed that HP AC mixtures have been used over a range of applications, from full depth AC layers to thin AC overlays under heavy traffic on interstates and slow-braking loads at intersections. HP AC mixtures showed promising field performance with no modifications to or variations of the agency’s standard construction practices and equipment needed ( 1 – 3 ). In addition, the authors attempted to estimate a preliminary structural layer coefficient of HP AC mixtures ( a HP-AC ) for flexible pavements ( 4 ) using limited data available from previous studies ( 5 , 6 ) following empirical and mechanistic-based approaches ( 1 – 3 ).…”

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confidence: 99%

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Fatigue-Based Structural Layer Coefficient of High Polymer-Modified Asphalt Mixtures

Habbouche

Hajj

Sebaaly

et al. 2020

Transportation Research Record: Journal of the Transportation R

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Florida Department of Transportation uses the 1993 AASHTO guide to conduct new and rehabilitation designs for all the state’s flexible pavements. Based on previous experience, a structural layer coefficient of 0.44 was found to be well representative of the department’s conventional polymer-modified (PMA) asphalt concrete (AC) mixtures. If the positive impact of the polymer on the layer is assumed to be maintained at higher contents, then the use of high polymer-modified (HP) asphalt binder may lead to a higher AC structural layer coefficient and a reduced AC layer thickness for the same design traffic and serviceability design loss. The objective of this paper was to determine a fatigue-based structural layer coefficient for asphalt mixtures that contain HP binder using comprehensive mechanistic analyses. This approach relied on combining measured engineering properties and performance characteristics of AC mixtures with advanced flexible pavement modeling (3D-Move). A total of eight PMA and eight HP AC mixtures were designed and evaluated in the laboratory. Overall, the HP AC mixtures showed similar or lower dynamic modulus and better fatigue performance models when compared with those of their respective PMA AC mixtures. However, the fatigue-based structural layer coefficients, determined via mechanistic analysis using the service life approach, ranged between 0.33 (lower than 0.44) and 1.32 (greater than 0.44). Using advanced statistical analyses, a fatigue-based structural layer coefficient of 0.54 was determined for HP AC mixtures. This coefficient should still be verified for other modes of distress.

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