Bitumen and Bitumen Modification: A Review on Latest Advances

Porto, Michele; Caputo, Paolino; Loise, Valeria; Eskandarsefat, Shahin; Teltayev, Bagdat; Rossi, Cesare Oliviero

doi:10.3390/app9040742

Cited by 226 publications

(121 citation statements)

References 178 publications

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“…Therefore, the reason for the huge enhancement of the rutting factor should be analyzed from these two perspectives. The modification effect of the PE from WEB has been already demonstrated in other studies [21][22][23][24][25]. Generally speaking, the PE was harder than virgin bitumen.…”

Section: High Temperature Performancesupporting

confidence: 60%

Evaluation of Waste Express Bag as a Novel Bitumen Modifier

Lin

Adhikari

et al. 2019

Applied Sciences

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With the rapid development of China’s e-commerce and logistics industry, a large number of waste express bags (WEBs) have been produced, which are difficult to recycle. The existing methods of waste express bag disposal often cause severe environmental pollution. It was discovered in this paper that the use of WEBs to modify bitumen could be an environmentally friendly way to recycle WEBs. This study aimed to investigate the feasibility of using WEBs to modify bitumen and promote the performance of WEB-modified bitumen. In order to verify this assumption, a series of basic or rheological experiments were conducted on different dosages of WEB-modified bitumen. The test results and phenomenon showed that the WEBs could be used to modify the binder homogeneously by using a high-speed shearing machine. The basic experiments showed that the WEBs could decrease the penetration and ductility while increasing the softening point and the rotational viscosity. Additionally, the rheological experimental data indicated that the high temperature performance was improved while the low temperature performance stayed the same. The Fourier-transform infrared spectroscopy (FTIR) results demonstrated that modification of the WEB was a physical modification without chemical reaction and the main component of the modifier was polyethylene. The fluorescence microscope (FM) data revealed the micro-structures of different dosages of WEB-modified bitumen. In conclusion, WEB can be a feasible binder modifier.

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Section: High Temperature Performancesupporting

confidence: 60%

Evaluation of Waste Express Bag as a Novel Bitumen Modifier

Lin

Adhikari

et al. 2019

Applied Sciences

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“…It is concluded that waste cooking oil (WCO) as rejuvenators is useful for their low cost and fewer environmental concerns. From a chemical point of view, oil exposed to higher temperature alters its chemical composition and produces high anti-oxidant molecules used as rejuvenators in asphalt binder [23]. However, WCO has certain drawbacks, such as weak low-temperature fluid characteristics, the tendency of oxidative degradation, and vulnerability to hydrolysis in acidic media, which bounds its applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cereclor as Rejuvenator to Enhance the Aging Resistance of Reclaimed Asphalt Pavement Binder

Yaseen

Hafeez

2020

Materials

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Asphalt is the most commonly used material for pavement construction around the world, and therefore, it is vital to acquaint a practice that restores the reclaimed asphalt pavement (RAP) binder properties to the required level of performance by adding proper rejuvenators. However, a rejuvenator may perform better in the early stages of its application but may not necessarily perform better in the long run. The aim of this study is to assess the rejuvenation effect on the aging resistance of RAP binder in long-life performance through applying artificial aging. In this study, base virgin binder of pen grade 60/70 and RAP binder rejuvenated with Cereclor were subjected to artificial aging to simulate the short- and long-term aging effects. Penetration, softening point, ductility, and viscosity; saturates, aromatics, resins, and asphaltene (SARA) fractionation; and Fourier-transform infrared (FTIR) spectroscopy, bending beam rheometer (BBR), and dynamic shear rheometer (DSR) tests were conducted to evaluate the potential improvements in various properties of RAP binder. The results indicated that the physical, fractional composition, rheological, and aging resistance of RAP binder improved through the rejuvenation mechanism. Therefore, the rejuvenator improved the chemical structure through re-balancing the constituents in the colloidal system, even after long-term re-aging, which proves it to be an aging-resistant binder. Furthermore, it has been concluded that Cereclor has substantial rejuvenation potential even after applying artificial aging, and it can be utilized in pavement recycling to achieve long-life performance. Furthermore, the results depict good correlations between the physical, rheological, and chemical parameters of virgin and RAP binder.

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“…A number of special additives improving AC performance can be also used. An extensive overview research in this important field can be found, e.g., in [1]. The impact of such additives and the external loads (understood as an action of mechanical load, thermal load, moisture etc.)…”

Section: Introductionmentioning

confidence: 99%

Synthetic Microstructure Generation and Multiscale Analysis of Asphalt Concrete

Klimczak

Cecot

2020

Applied Sciences

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In this paper, we present an enhanced framework for the synthetic asphalt concrete (AC) microstructure generation for the numerical analysis purposes. It is based on the Voronoi tessellation concept with some necessary extensions that allow for the reliable generation of the aggregate particles of the given size distribution. The synthetic microstructure generation allows for faster numerical modeling of the novel materials. It can partially replace the X-ray computed tomography approach, which is frequently used in such analysis. Our framework is a kind of compilation of the known techniques with the enhancements applied to expedite the microstructure modeling process. Therefore, the generated microstructure is used in the numerical upscaling to model the macroscale asphalt concrete properties. We restrict ourselves (in this paper only) to the 2D elastic computations. We also assume the perfect bonding between these two materials and the static load for the sake of simplicity. The upscaling is performed by the multiscale finite element method (MsFEM). A short recapitulation of the MsFEM foundations as well as the numerical test comparing the overkill mesh solution with the upscaled one is provided in the paper. The test results confirm that the whole presented methodology can serve as a fast and reliable tool for the tests on novel asphalt mixtures and other heterogeneous materials. It can reduce the cost of the design process substituting some of the laboratory experiments, giving the opportunity to test the developed constitutive models and expedite the numerical analysis itself.

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Bitumen and Bitumen Modification: A Review on Latest Advances

Cited by 226 publications

References 178 publications

Evaluation of Waste Express Bag as a Novel Bitumen Modifier

Evaluation of Waste Express Bag as a Novel Bitumen Modifier

Effect of Cereclor as Rejuvenator to Enhance the Aging Resistance of Reclaimed Asphalt Pavement Binder

Synthetic Microstructure Generation and Multiscale Analysis of Asphalt Concrete

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