Effects of deicing agents on moisture susceptibility of the WMA containing recycled crumb rubber

Fakhri, Mansour; Javadi, Sajad; Sedghi, Reza; Arzjani, Danial; Zarrinpour, Yousef

doi:10.1016/j.conbuildmat.2019.07.307

Cited by 53 publications

(9 citation statements)

References 38 publications

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“…Moisture susceptibility is also considered as a remarkable drawback of WMA pavements, causing inferior pavement performance, and increasing maintenance costs. This is partly due to the fact that low production temperature may increase the level of water molecules trapped in the asphalt mixture 12 , 13 .…”

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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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%

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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“…In general, there are two types of moisture damage in asphalt pavements: those driven by a loss of adhesion between bitumen and aggregates and those caused by a failure within the bitumen matrix due to the softening of the mastic [53]. In this study, the former is investigated using the broken specimens from the ITS experiment after Fakhri et al [54]. As mentioned before, the ITS test continued after mechanical failure until the sample was completely broken, as per AASHTO recommendation.…”

Section: The Indirect Tensile Strength Test (Aashto T283)mentioning

confidence: 99%

Zinc Slag as a Partial or Total Replacement for Mineral Filler in Warm Mix Asphalt and Its Effects on Self-Healing Capacity and Performance Characteristics

et al. 2022

Self Cite

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Utilizing the self-healing properties of asphalt materials is a way to improve the service life of asphalt pavements. Enhanced self-healing capabilities can be achieved through mixture modification. Using waste or by-product materials to modify asphalt mixtures can provide further environmental benefits. However, with a given mixture modification method, the resulting materials should be adequately vetted to ensure that enhanced self-healing capability is not attained at the expense of the mixture’s overall performance. This research aims to investigate the feasibility of using zinc slag filler to enhance the self-healing properties of warm mix asphalt (WMA) and evaluates the rutting susceptibility and moisture-resistance of the slag-modified mixtures. To this end, zinc slag filler was used to replace a portion of the mineral filler at different replacement rates in WMA mixtures. Self-healing capabilities of the resulting mixtures were studied under microwave induction heating. The influence of zinc slag modification on asphalt mixture’s characteristics and conventional performance indicators were evaluated by the Texas boiling test, the three-point bending test, and the Kim test (a deformation test). Also, the adhesion between bitumen and aggregate was evaluated using the broken sample from the three-point bending test and digital image analysis. The results of self-healing tests demonstrated that the heat generation capability of the specimens increased with filler replacement rate, such that the specimens with 100% of the mineral filler replaced with slag showed the highest heating performance. Zinc slag filler showed the potential to improve the moisture resistance of WMA by enhancing aggregate–bitumen adhesion and thus reducing stripping. The slag-modified WMA samples exhibited better tensile strength ratio (TSR) and deformation resistance than their non-modified equivalents.

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“…There are different lines of research framed within this concept, with several examples in which by-products from other industries have been successfully used. Among the waste used are ceramic dust [12], biomass ash [13], recycled glass [14], construction and demolition waste [15], recycled crumb rubber [16], etc. In most cases, similar properties were obtained as traditionally manufactured bituminous mixtures without prejudice to the final quality of the material.…”

Section: Introductionmentioning

confidence: 99%

Utilisation of Mining Waste from the Steel Industry, Ladle Furnace Slags, as a Filler in Bituminous Mixtures of Continuous Grading

Nebreda-Rodrigo

Terrones-Saeta

Suárez-Macías

et al. 2021

Metals

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Road construction is an activity that involves a large consumption of raw materials, with the consequent high environmental impact. For this reason, various research projects are being developed in which waste is used as a raw material for bituminous mixtures. This avoids the extraction of raw materials, reduces the environmental impact and reduces greenhouse gas emissions. In this research, the incorporation of ladle furnace slag as a filler for continuous grading bituminous mixtures was evaluated. Firstly, the ladle furnace slag was chemically and physically characterised and its suitability for use as a filler was determined in accordance with the regulations. Subsequently, bituminous mixtures were conformed with the slag and also with commercial fillers, calcareous and hornfels, in order to compare the results. Finally, the physical properties, Marshall stability and the effect of water were determined with the immersion–compression test on all families of samples. The results showed that the mixes conformed with ladle furnace slag had higher Marshall stability, less variation due to the effect of water and acceptable physical properties. Consequently, the suitability of utilisation of these slags in bituminous mixtures could be confirmed.

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Effects of deicing agents on moisture susceptibility of the WMA containing recycled crumb rubber

Cited by 53 publications

References 38 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

Zinc Slag as a Partial or Total Replacement for Mineral Filler in Warm Mix Asphalt and Its Effects on Self-Healing Capacity and Performance Characteristics

Utilisation of Mining Waste from the Steel Industry, Ladle Furnace Slags, as a Filler in Bituminous Mixtures of Continuous Grading

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