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Journal ArticleDOI

Laboratory Evaluation of Modified Asphalt Mixes Using Nanomaterial

01 Mar 2021-Journal of Testing and Evaluation (ASTM International)-Vol. 49, Iss: 2, pp 1020-1036
TL;DR: In this paper, the application of several nanomaterials, including nanoclays (halloysite and bentonite) and cellulose nanocrystals, as promising alternatives to improve asphalt performance and increase the service life of asphalt pavements was investigated.
Abstract: More demands on pavement—including increasing temperature variability and precipitation and higher loading conditions, along with an increase in the rate of load applications—result in decreased pavement performance and reduce its service life. Three major distresses identified with asphalt pavements are rutting, fatigue cracking, and thermal cracking. Polymers have been frequently used for modification of asphalt binders to improve pavement performance and reduce pavement distress. However, there are problems associated with incompatibility between the modifier (polymer) and the binder as well as a reduction in the aging resistance of the asphalt. Furthermore, asphalt modification with polymers can result in operational difficulties as well as a significant increase in cost. This paper investigates the application of several nanomaterials, including nanoclays (halloysite and bentonite) and cellulose nanocrystals, as promising alternatives to improve asphalt performance and increase the service life of asphalt pavements. Using the Superior Performing Asphalt Pavement (SuperPave) asphalt mixture design and analysis system, the rheological properties of nanomodified asphalt binder and mechanical properties of the resulting asphalt mixes were evaluated at low and high temperatures. Results showed a noticeable improvement in the high-temperature properties of the modified asphalt mixes, with no significant effect on the low-temperature properties of the asphalt mixes or rheological properties of the modified asphalt binder. Considering the cost of the nanomaterials, it was concluded that they may provide a cost-effective alternative for asphalt modification.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors identified cracking failure as one of the major distress modes associated with asphalt pavement and asphalt modification has been identified as an effective method to improve pavement performance.
Abstract: Cracking failure is one of the major distress modes associated with asphalt pavement. Asphalt modification has been identified as an effective method to improve pavement performance. In this study,...

4 citations

Journal ArticleDOI
TL;DR: In this article, a promising technology to compensate ageing is presented, which uses porous aggregates as capsules conformed to the road surface to compensate the ageing of road surfaces. But, the method is not suitable for use and time and as a result it requires maintenance.
Abstract: Roads, due to use and time, become aged and as a result, they require maintenance. This paper presents a promising technology to compensate ageing. The method uses porous aggregates as capsules con...

4 citations

Journal ArticleDOI
07 Mar 2022-PLOS ONE
TL;DR: Hongjuan et al. as mentioned in this paper studied the effect of graphene oxide (GO) on thermoplastic polyurethane (TPU)/styrene-butadiene-styrene (SBS)-modified asphalt and reveal the modification mechanism.
Abstract: To study the effect of graphene oxide (GO) on thermoplastic polyurethane (TPU)/styrene–butadiene–styrene (SBS)-modified asphalt and reveal the modification mechanism, GO/TPU/SBS-modified asphalt was prepared by high-speed shearing Hongjuan et al. (2020). The physical properties of the modified asphalt were measured via a basic index test, and the dynamic rheological behavior of the modified asphalt was characterized by a dynamic shear rheometer (DSR), a bending beam rheometer (BBR), and other technical means. Moreover, double-beam UV-visible (UV-Vis) spectrophotometry and Fourier-transform infrared spectroscopy (FTIR) were conducted to determine the mechanism of asphalt modification from the microscopic perspective. The experimental results reveal that the GO content can improve the basic mechanical properties, high-temperature stability, and low-temperature cracking resistance of TPU/SBS-modified asphalt. When the GO content is 0.5%, the ductility and softening point of the modified asphalt are found to be significantly increased, and the degree of penetration is slightly decreased. Moreover, with the increase of the GO content, the rutting resistance and crack resistance of the asphalt materials are improved. Via the joint action of physical modification and chemical reaction, GO can form a stable structure with asphalt molecules, enhance the stability between asphalt molecules, and increase the colloidal content of macromolecules in the modified asphalt components.

2 citations

Journal ArticleDOI
TL;DR: In this article , three kinds of fiber (polyester fiber, polypropylene fiber, and lignin fiber) are used to evaluate the relationship between the fiber types and mechanic performance of SMA-13 fiber asphalt mixture, which is specially designed for field tests of high-speed vehicles on pavements.
Abstract: Fiber can absorb asphalt binder and therefore reinforce and stabilize the asphalt mixture structure and also prevent the asphalt from the leaking, which occurs in the process of mixing and transport. In this study, three kinds of fiber (polyester fiber, polypropylene fiber, and lignin fiber) are used to evaluate the relationship between the fiber types and mechanic performance of SMA-13 fiber asphalt mixture, which is specially designed for field tests of high-speed vehicles on pavements. The micro-surface characteristics of fiber and aggregates were studied by SEM and image analysis. Marshall stability and splitting strength were used to measure the properties of the asphalt mixture. In addition, a field test, including measures for curve-section edge, curve-section center, straight-section edge, and straight-section center, was conducted to evaluate the skid resistance of the high-speed vehicles that test field pavement. The results show that the Marshall stabilities of asphalt mixture with three kinds of fibers have been improved, whereas the stability of asphalt mixture prepared by polypropylene fiber and polyester fiber particularly increased before immersion. Among the three kinds of fiber asphalt mixtures, the polyester fiber asphalt mixture has enhanced water susceptibility. Skid resistance in the field test indicated that high skid resistance and good surface-texture depth were achieved.

1 citations

Journal ArticleDOI
TL;DR: In this article , a systematic review is reflected, around the exhaustive research in the databases such as Scopus and Science Direct, compiling a sum of 85 articles, which are indexed in journals from 2017 to 2021, carried out correspondingly on the different investigations of the management of multidimensional nanomaterials in asphalts.
Abstract: Multidimensional nanomaterials, is a resource that has been formed over time becoming a revolutionary technology with a transcendent character providing the use in asphalt construction procedures, benefiting in the aspects of resistance in the environments to the field of civil engineering, in the same way it is a way in the advance for a better conservation of horizontal works with a favorable impact on the materials used, helping to preserve the care of the environment. In such a way that, in this article, a systematic review is reflected, around the exhaustive research in the databases such as Scopus and Science Direct, compiling a sum of 85 articles, which are indexed in journals from 2017 to 2021, carried out correspondingly on the different investigations of the management of multidimensional nanomaterials in asphalts. The objective of this literary review is to transmit various research by authors such as: the impact on the life cycle of asphalt, the performance it produces, the profitability and the advantage of the teaching that multidimensional nanomaterials have left, to later show results that show a growth in yields in asphalts through the application of multidimensional nanomaterials, So that it presents greater efficiency in the resistance to aging of the asphalt it is concluded that the nanomaterials reduce the environmental impact caused by the field of the constructions, improving the anti-aging capacity of the asphalt.