Understanding the short-term aging of warm mix asphalt using rolling thin film oven

Arafat, Shams; Wasiuddin, Nazimuddin M.

doi:10.1007/s42947-019-0076-2

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…WMA reduces energy consumption while also minimizing vapors and greenhouse gas emissions for the production of asphalt mixtures 5 . In addition, WMA is produced at a lower temperature condition than conventional asphalt mixtures, thus thermal and oxidative aging in WMA is lower than the conventional type 6 . Nonetheless, aging of the WMA mixture may be a disadvantage limiting in-field performance.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, aging of the WMA mixture may be a disadvantage limiting in-field performance. Thus, the investigation of anti-aging techniques and modifications is a challenging topic in the field of modern asphalt pavement engineering 6 , 7 . The warm mix asphalt technologies can be divided into three categories by use of synthetic or organic additives which ultimately affect the level of temperature reduction: chemical, organic additives, and foaming techniques 5 .…”

Section: Introductionmentioning

confidence: 99%

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Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

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Warm mix asphalt (WMA) is gaining increased attention in the asphalt paving industry as an eco-friendly and sustainable technology. WMA technologies are favorable in producing asphalt mixtures at temperatures 20–60 °C lower in comparison to conventional hot mix asphalt. This saves non-renewable fossil fuels, reduces energy consumption, and minimizes vapors and greenhouse gas emissions in the production, placement and conservation processes of asphalt mixtures. At the same time, this temperature reduction must not reduce the performance of asphalt pavements in-field. Low aging resistance, high moisture susceptibility, and low durability are generally seen as substantial drawbacks of WMA, which can lead to inferior pavement performance, and increased maintenance costs. This is partly due to the fact that low production temperature may increase the amount of water molecules trapped in the asphalt mixture. As a potential remedy, here we use fumed silica nanoparticles (FSN) have shown excellent potential in enhancing moisture and aging susceptibility of asphalt binders. In this study, asphalt binder modification by means of FSN was investigated, considering the effects of short-term and long-term aging on the rheological, thermal, and microstructural binder properties. This research paves the way for optimizing WMA by nanoparticles to present enhanced green asphalt technology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Cheraghian

Wistuba

Kiani

et al. 2021

Sci Rep

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“…The observations made in the field sections were confirmed in laboratory studies [8][9][10][11][12][13][14], showing a great dependence of the high-temperature properties of the asphalt binders on the laboratory aging protocols and the aging temperatures in particular. In studies comparing asphalt binders recovered from asphalt mixtures and the RTFOT-aged binders [15][16][17], it was shown that the standard temperature during short-term aging (163 • C) was too high to reflect the aging processes during the production of WMA mixtures, while 123 • C can be considered too low.…”

Section: Introductionmentioning

confidence: 99%

The Combined Effects of Additives on the Conventional and High-Temperature Performance Properties of Warm Mix Asphalt Binders

Chomicz-Kowalska,

Bartos,

Maciejewski

et al. 2023

Materials

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The present study investigates the effects of the simultaneous use of two additives, an organosilane warm mix asphalt (WMA) agent and a grade-bumping polyolefin compound, on the conventional and high-temperature performance properties of a paving grade 50/70 bitumen and a polymer-modified 45/80-55 bitumen. The WMA agent and polyolefin additive were introduced to the binders at rates of up to 0.3% and 2%, respectively. The base asphalt binders and their blends with the additives were tested before and after aging in a rolling thin film oven test at a temperature of 143 °C. The effects of the investigated additives were found to be dependent on the type of base binder and its aging state. It was generally observed that the WMA additive decreased the performance of the asphalt binders and limited the effects of the other additive, which increased the high-temperature stiffness and non-recoverable compliance of the blends. This interaction amounted to as much as an approx. 20% decrease in high-temperature stiffness and non-recoverable compliance of the binders. The additives caused a small increase in the elasticity of the binders and improved their creep performance when measured in multiple stress creep recovery tests.

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Laboratory evaluation of hard grade bitumen produced with PPA addition

Sandeep

Ramesh

Vijayapuri

et al. 2020

Int. J. Pavement Res. Technol.

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Understanding the short-term aging of warm mix asphalt using rolling thin film oven

Cited by 5 publications

References 10 publications

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

Rheological, physicochemical, and microstructural properties of asphalt binder modified by fumed silica nanoparticles

The Combined Effects of Additives on the Conventional and High-Temperature Performance Properties of Warm Mix Asphalt Binders

Laboratory evaluation of hard grade bitumen produced with PPA addition

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