Investigation of the Effect of Adding Silica Fume on Asphalt Concrete Properties

Al-Taher, Metwally G.; Hassanin, Hassan D.; Ibrahim, Mokhtar F.; Sawan, Ahmed M.

doi:10.5958/2319-6890.2018.00095.8

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…Consequently, the maintenance and repair of such pavement failures become costly [1]. In an effort to prevent failures and achieve more cost-effective pavements, numerous methods have been developed to enhance the performance and extend the service life of flexible pavements [2][3][4][5][6]. One of the most effective methods is the modification of asphalt with various additive materials to improve the virgin asphalt cement's performance characteristics.…”

Section: Introductionmentioning

confidence: 99%

Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements

Albayati,

Latief,

Al-Mosawe

et al. 2024

Applied Sciences

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This research delves into the realm of asphalt technology, exploring the potential of nano-additives to enhance traditional asphalt binder properties. Focusing on Nano-Titanium Dioxide (NT), Nano-Aluminum Oxide (NA), and Nano-Silica Oxide (NS), this study investigates the effects of incorporating these nanomaterials at varying dosages, ranging from 0% to 8%, on the asphalt binder’s performance. This study employs a series of experimental tests, including consistency, storage stability, rotational viscosity, mass loss due to aging, and rheological properties, to assess the impact of nano-additives on asphalt binder characteristics. The findings indicate a substantial improvement in the consistency of the asphalt binder with the addition of nanomaterials, particularly NS, which shows a 41% reduction in penetration at an 8% content and a notable increase in the softening point. The storage stability tests reveal that NS-modified asphalt exhibits superior stability compared to NT and NA, with a significantly lower ΔT increase. Furthermore, the investigation into rotational viscosity suggests that NS, despite increasing the binder’s viscosity, does not exceed the AASHTO M320 threshold, ensuring the binder’s workability. Aging tests demonstrate that NT, at lower concentrations, acts as an effective anti-aging agent, whereas NA and NS tend to increase the mass loss, impacting thermal stability. This study concludes that while each nanomaterial uniquely influences the asphalt binder’s properties, NS stands out in terms of enhancing the high-temperature performance and storage stability. Optimal dosages of 6% for NT and NA and 4% for NS are recommended based on the Overall Desirability analysis. This research bridges the gap between traditional asphalt materials and modern requirements, highlighting the transformative impact of nano-additives in advancing asphalt pavement technology.

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Section: Introductionmentioning

confidence: 99%

Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements

Albayati,

Latief,

Al-Mosawe

et al. 2024

Applied Sciences

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“…Abutalib and Abutalib et al studied the application of silica fume (0.25-1.0%) to improve the rheological properties and to reduce the oxidation rate of the asphalt binder [27,28]. Al-Taher et al carried out experimental work to quantify the effect of SF on various mechanical properties of asphalt concrete [29]. The effect of SF on the mechanical strength of reclaimed asphalt concrete was investigated by Larbi et al [30].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Machine Learning Approach to Investigate the Mechanical Performance of Asphalt Mixtures with Silica Fume Filler

et al. 2023

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This study explores the potential in substituting ordinary Portland cement (OPC) with industrial waste silica fume (SF) as a mineral filler in asphalt mixtures (AM) for flexible road pavements. The Marshall and indirect tensile strength tests were used to evaluate the mechanical resistance and durability of the AMs for different SF and OPC ratios. To develop predictive models of the key mechanical and volumetric parameters, the experimental data were analyzed using artificial neural networks (ANN) with three different activation functions and leave-one-out cross-validation as a resampling method. The addition of SF resulted in a performance comparable to, or slightly better than, OPC-based mixtures, with a maximum indirect tensile strength of 1044.45 kPa at 5% bitumen content. The ANN modeling was highly successful, partly due to an interpolation-based data augmentation strategy, with a correlation coefficient RCV of 0.9988.

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“…They concluded that S.F improved the rutting resistance and Marshall stability of the HMA mixture. At 6% of silica fume, the Marshall stability value increased by 23.6% and the rutting depth decreased by 36% compared to the conventional HMA mixture [21]. Shafabakhsh et al evaluated the asphalt mixture prepared with silica fume modified binders at different contents (3%, 5%, 7%, and 10% by bitumen weight).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Hot Mix Asphalt and Binder Performance Modified With High Content of Nano Silica Fume

Aboelmagd

Moussa

Enieb

et al. 2021

JES. Journal of Engineering Sciences

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This research aims to evaluate the mechanical properties of hot asphalt mixtures prepared using modified asphalt binders with various contents of nano-silica fume (NSF). The modification to virgin bitumen is done by shear mixing with NSF at low contents (2, 4, 6, and 8%) and high contents (20, 30, 40, and 50%) with bitumen weight. The homogeneity of the modified asphalts was assessed using Scanning Electron Microscopy. The rotational viscosity, softening point, and penetration tests were used to evaluate the rheological-physical properties of the modified asphalt binders. The stiffness, moisture damage, rutting, and fatigue of the hot mixes prepared with NSF-modified binders were evaluated using Marshall, indirect tensile strength, and double punching tests. The results showed a significant improvement in the rheological-physical properties of the modified binders with high content compared Aboelmagd et al., Evaluation of Hot Mix Asphalt and Binder Performance Modified with … to low content of NSF. Therefore, the modified binders with 30%, 40%, and 50% of NSF were selected to prepare NSF-modified mixtures. The results showed that asphalt mixtures incorporating 30, 40, and 50% NSF-modified binders were more resistant to moisture damage, rutting, and fatigue cracking compared to the control mixture. The novelty in this research is to produce a modified asphalt mixture with half a quantity of bitumen while achieving a high performance compared to the control mixture.

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Investigation of the Effect of Adding Silica Fume on Asphalt Concrete Properties

Cited by 10 publications

References 2 publications

Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements

Nano-Additives in Asphalt Binder: Bridging the Gap between Traditional Materials and Modern Requirements

Experimental and Machine Learning Approach to Investigate the Mechanical Performance of Asphalt Mixtures with Silica Fume Filler

Evaluation of Hot Mix Asphalt and Binder Performance Modified With High Content of Nano Silica Fume

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