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Journal ArticleDOI

Polymer modified asphalt binders

01 Jan 2007-Construction and Building Materials (Elsevier Limited)-Vol. 21, Iss: 1, pp 66-72
TL;DR: A review of research that has been conducted on polymer modified binders over the last three decades can be found in this paper, where the elastic recovery test is good at determining the presence of polymers in an asphalt binder but is less successful at predicting field performance of the pavement.
About: This article is published in Construction and Building Materials.The article was published on 2007-01-01. It has received 836 citations till now. The article focuses on the topics: Asphalt.
Citations
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Journal ArticleDOI
TL;DR: A general picture of bitumen structure is shown to emerge and it shows that a simple solvation parameter allows quantifying the effect of the asphaltenes on the rheological properties ofbitumen.

1,236 citations

Journal ArticleDOI
TL;DR: In this article, the history of bitumen polymer modification for road construction has been reviewed in the field of road construction during the last 40 years and the challenges and advances in the last decade.

582 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of different fibers, mixing procedures and executive problems on asphalt concrete is inspected, where the authors focus on the first side of the coin and investigate FRAC materials modified by random fiber inclusion.

347 citations

Journal ArticleDOI
TL;DR: In this article, a state-of-the-art article focuses on various aspects of the WMA technology incorporating Sasobit® which includes the rheological characteristics of asphalt binders.

284 citations

Journal ArticleDOI
TL;DR: In this article, the authors evaluated the rheological properties and chemical bonding of nano-modified asphalt binders blended with nanosilica and found that the nanosilsilica was added to the control asphalt at contents of 4% and 6% based on the weight of asphalt binder.
Abstract: The objective of this study is to evaluate the rheological properties and chemical bonding of nano-modified asphalt binders blended with nanosilica In this study, the nanosilica was added to the control asphalt at contents of 4% and 6% based on the weight of asphalt binders Superpave binder and mixture tests were utilized in this study to estimate the characteristics of the nano-modifed asphalt binder and mixture The rotational viscosity (RV), dynamic shear rheometer (DSR), bending beam rhometer (BBR), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), asphalt pavement analyzer (APA), dynamic modulus (DM) and flow number (FN) tests were used to analyze rheological properties and chemical bonding changes of the nano-modified asphalt binder and the performance of the nano-modified asphalt mixture In addition, the performance of nano-modified asphalt after rolling thin-film oven (RTFO) short-term and pressure-aging vessel (PAV) long-term aging was assessed as well

281 citations


Cites background or methods or result from "Polymer modified asphalt binders"

  • ...It can be used for nonmodified and modified asphalt binders [ASTM-D2196 (ASTM 2010b); Al-Khateeb and Al-Akhras 2011]....

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  • ...The results show that SBS modified asphalt significantly improves the fatigue cracking and low-temperature performance (Yildirim 2007; Larsen et al. 2009)....

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  • ...Author keywords: Rheological; Asphalt; Nanomaterial; Nano-modified asphalt; Fourier transform infrared spectroscopy (FTIR); Nanosilica; Scanning electron microscopy (SEM); Asphalt mixture....

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  • ...…2004; Al-Hadidy and Yi-qiu 2011), styrene-butadiene-rubber (SBR) (Zhang et al. 2005; Zhang et al. 2009), ethylene glycidyl acrylate (EGA) terpolymer (Yildirim 2007), crumb rubber (Shen et al. 2009; Xiao et al. 2009), organo-montmorillonite (Yu et al. 2007a; Sun et al. 2008; Yu et al. 2009), waste…...

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  • ...Asphalt has a complicated chemical composition, which exhibits both viscous and elastic properties that heavily depend on both time and temperature (Yildirim 2007; Peters et al. 2010)....

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References
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Journal Article
TL;DR: In this paper, the authors present an overview of the characteristics of polymerasphalt binders, mostly used in the paving industry, focusing on the relationships of composition and formulation with the properties of the binder, and the relationship of binder properties and performance of the mixture.
Abstract: Considering the international position of Venezuelan oil industry as one of the leaders of the current world asphalt production, it is important to be aware of the source of opportunities that polymer modified asphalt (PMA) offers in today’s market. Based on that, this paper presents an overview of the characteristics of polymerasphalt binders, mostly used in the paving industry. Emphasis is being made on the relationships of composition and formulation with the properties of the binder, and the relationships of the binder properties and performance of the mixture. Although polymer modification seems to be the best solution to improve asphalt properties, these systems present three main problems: a) poor asphalt polymer compatibility (which influences the stability of the system), b) higher viscosities during asphalt processing and application, and c) higher cost. These issues are also covered in the present study, altogether with some field experiences. A summary of advantages and disadvantages of most used polymers to modify asphalt binders (styrene-butadiene-styrene (SBS), reclaimed tire rubber, polyethylene (PE), and atactic polypropylene (aPP)) is also provided.

237 citations

Journal ArticleDOI
TL;DR: In this paper, the styrene-butadiene-styrene (SBS! triblock copolymer) was used to modify the asphalt binder and the morphology and engi- neering properties of the binders were investigated using transmission electron microscopy and dynamic shear rheometer.
Abstract: The styrene-butadiene-styrene ~SBS! triblock copolymer was used to modify the asphalt binder. The morphology and engi- neering properties of the binders were investigated using transmission electron microscopy ~TEM!, rotational viscometer, and dynamic shear rheometer. The morphology of polymer-modified asphalt was described by the SBS concentration and the presence of microstructure of the copolymer. When the SBS concentration increased, the copolymer gradually became the dominant phase, and the transition was followed by a change in engineering properties of SBS-modified asphalt. Results from TEM showed that depending on the asphalt and copolymer source, a variety of morphology can be found. The SBS-modified binders might show a continuous asphalt phase with dispersed SBS particles, a continuous polymer phase with dispersed asphalt globules, or two interlocked continuous phases. The optimum SBS content was determined based on the formation of the critical network between asphalt and polymer. Because of this network formation, the binders showed a large increase in the complex modulus that indicates resistance to rutting. At low SBS concentrations, the Kerner model was found to be appropriate to estimate the rheological properties of SBS-modified asphalt. An adapted Kerner equation was proposed in this study to predict the complex modulus of modified asphalt at high SBS concentrations.

203 citations

Journal ArticleDOI
TL;DR: In this paper, the basic principles of bitumen-polymer compatibility, the mechanism for modification, and the effect of the components on the properties of the modified binders are presented along with several specific problems related to the use of these products.
Abstract: Modified binders—obtained by adding thermoplastic macromolecular systems of plastomers or elastomers to traditional pure asphalt cements for road construction—have existed for more than 20 years. These products are still poorly understood scientifically. Significant research must be undertaken to better understand binder relationships between composition, structure, and properties, and the relationships between hot mix performance (rutting, fatigue, thermal cracking) and the characteristics of the modified binders as measured in the laboratory. The current state of knowledge regarding these issues is presented along with a discussion of the basic principles of bitumen-polymer compatibility, the mechanism for modification, and the effect of the components on the properties of the modified binders. Several specific problems related to the use of these products are presented.

110 citations

01 Jan 1998
TL;DR: The NCHRP 9-10 Project as mentioned in this paper evaluated the suitability of using the Superpave binder and mixture test system for modified asphalt binders, and the results indicated that modified binders will be used more in the future and that there are major concerns regarding the applicability of the superpave PG-grading system to modified asphalt binder.
Abstract: The objective of the NCHRP 9-10 Project is to evaluate the suitability of using the Superpave binder and mixture test system for modified asphalt binders. As part of this project, a survey of users and producers of modified asphalts as conducted. Also, a detailed analysis and review of published literature was carried out. These efforts resulted in identifying the asphalt additives most commonly used, the concerns that users and producers have with the application of Superpave binder specification to modified binders, and the projected change in the use of modified binders based on their experience and the future needs for high quality pavements. The results indicate that modified binders will be used more in the future and that there are major concerns regarding the applicability of the Superpave PG-grading system to modified binders. The analysis of information collected from the surveys and the literature search had also resulted in identification of important gaps in the PG-grading system. It is evident that the Superpave specification is based on assumptions that apply only to binders that exhibit simple rheological behavior, such as conventional unmodified asphalts. There is, therefore, a need for a new classification system that differentiates between binders that can be considered as part of the PG-grading system and others that can not. Binders that satisfy the assumption made in the PG-grading system can be considered simple binders. The other binders should be classified as complex binders because they exhibit complex behavior that does not satisfy the assumptions made in the PG-grading system. In addition to the need for a new classification system, a set of new or revised tests are needed to address characteristics that are typical of modified binders that are not included in the current PG-grading.

69 citations

Journal ArticleDOI
TL;DR: In this article, the properties of a number of polymers commonly proposed for polymer-modified bitumens (PMBs) were studied to suggest a way to select the polymer suitable for the required application; the prediction of the performance in the final application would allow bypass of the tests on PMBs and asphalt mixtures.
Abstract: The properties of a number of polymers commonly proposed for polymer-modified bitumens (PMBs) were studied to suggest a way to select the polymer suitable for the required application; the prediction of the performance in the final application would allow bypass of the tests on PMBs and asphalt mixtures. Rheological and mechanical tests were performed on both raw materials and PMBs containing 5 percent polymer. Tensile dynamic mechanical test analyzer hardness, tensile properties, and tension set tests were conducted on polymers; the tendency of the polymers to absorb aromatic oil was also determined to simulate their swelling in the PMBs. Rheometer dynamic tests, R&B, penetration, and elastic recovery were carried out on PMBs. Rheometer dynamic parameters, R&B, penetration, and elastic recovery were measured on the bitumen. The experimental data confirm that selected tests on polymers can give good information about the polymer contribution to PMBs' performances.

50 citations