Evaluation of self-healing of asphalt concrete through induction heating and metallic fibers

Pamulapati, Yashwanth; Elseifi, Mostafa A.; Cooper, Samuel B.; Mohammad, Louay N.; Elbagalati, Omar

doi:10.1016/j.conbuildmat.2017.04.064

Cited by 55 publications

(15 citation statements)

References 14 publications

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“…Fig 6d illustrates that aluminum shavings showed better healing performance than steel shavings in both BA and LA groups. A previous study using induction healing has also found a similar result [40]. This situation may be caused by the density difference between aluminum and steel.…”

Section: Idt Strength Test and Self-healingsupporting

confidence: 69%

“…A great deal of previous research into microwave healing has focused on using steel fibers in asphalt concrete to accelerate microwave healing [2, 16, 22-24, 30, 33-35]. Aluminum fibers, on the other hand, have been used only in induction heating [40]. In other words, the effect of aluminum wastes on microwave healing has not been studied before.…”

Section: Introductionmentioning

confidence: 99%

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Self-Healing Potential of Porous Asphalt Concrete Containing Different Aggregates and Metal Wastes Through Microwave Heating

Atakan

Yıldız

2022

Politeknik Dergisi

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Asphalt is known as a self-healing material due to its temperature-related flow behavior. When damage occurs in asphalt concrete, bitumen can flow into cracks with heat and provide recovering by filling the cracks. Much of the current literature on self-healing pays particular attention to artificially heat asphalt concrete by several methods, including microwave heating. Although there is a growing body of literature that recognizes using steel fibers in microwave healing asphalt, there are no data on the use of aluminum fibers to improve microwave healing. This paper evaluates the microwave healing potential of asphalt concrete that contains metal wastes such as aluminum and steel shavings. Besides, the use of basalt and limestone aggregate (BA and LA) in asphalt concrete were evaluated. To achieve this, firstly, microwave absorption capabilities of BA and LA were determined. In the second step of the study, porous asphalt concrete specimens were prepared, and they were damaged by the indirect tensile (IDT) strength test at low temperatures. After that, damaged specimens were healed via microwave heating, and they were damaged again by the IDT strength test. In the end, the healing index of the specimens was determined as the proportion of healed specimen’s strength to the original. It has been found that BA is almost three times more microwave absorber material than LA, and asphalt specimens containing BA showed better healing performance. It has also been demonstrated for the first time that aluminum shavings might be a better option than steel shavings to accelerate microwave healing.

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Section: Idt Strength Test and Self-healingsupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Self-Healing Potential of Porous Asphalt Concrete Containing Different Aggregates and Metal Wastes Through Microwave Heating

Atakan

Yıldız

2022

Politeknik Dergisi

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“…Microwave heating is also considered as a promising technique to promote the self-healing of composite materials with metallic fibers [ 19 , 20 ]. Microwave heating causes the polar molecules’ orientation to change due to the alternating magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Heating Characteristics and Induced Healing Efficiencies of Asphalt Mixture via Induction and Microwave Heating

Liu

Chen

et al. 2018

Materials

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This paper investigates the heating characteristics and induced healing efficiencies of asphalt mixture containing steel fiber under induction heating and microwave heating. The heating characteristics of an asphalt mixture with different heating methods were studied with an infrared camera. The healing performance of the asphalt mixture specimens in different healing conditions were investigated by observing the crack closure and testing the fracture resistance recovery after healing. The results showed that the heating speed at the surface of asphalt mixture with induction heating was much higher than that with microwave machine heating, under a similar output power and the same method of radiation. While the temperature distribution within the asphalt mixture under induction heating was quite uneven, microwave heating resulted in a more uniform temperature distribution. The effective heating depth of microwave heating is much higher than that of induction heating. Gradient healing occurred within the sample heated with induction healing, while a uniform healing effect can be achieved with microwave heating.

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“…The healing process is more effective when these metallic fillers (steel wool is the most frequent one, but aluminum crumb has been also reported) are connected in closed-loop circuits [ 68 , 69 ]. Different filler contents with different lengths, quantities, and diameters of steel wool fibers have been evaluated, and as a recommendation, mixtures with around 5% content of short fibers with big diameters should be employed [ 56 , 70 ].…”

Section: Resultsmentioning

confidence: 99%

Self-Healing Asphalt: A Systematic Bibliometric Analysis for Identification of Hot Research Topics during the 2003–2018 Period

Abejón

2021

Materials

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The use of self-healing asphalt is a good option to extend the lifetime of roads and to improve the sustainability of pavement management systems. A bibliometric analysis based on the Scopus database was carried out to review the global research related to self-healing asphalt from 2003 to 2018 and to identify relevant quantitative characteristics from the research in this period. The results from this analysis revealed that the number of accumulated publications followed an exponential growth, which confirmed the relevance that this research topic has gained during the last years. The study revealed that China was the most productive country, followed by the Netherlands, where the most prolific institution is located: Delft University of Technology. Some important research features of the two main approaches most frequently used to develop asphalt mixtures with enhanced self-healing abilities (external heating and encapsulated rejuvenating agents) are compiled in this work.

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Evaluation of self-healing of asphalt concrete through induction heating and metallic fibers

Cited by 55 publications

References 14 publications

Self-Healing Potential of Porous Asphalt Concrete Containing Different Aggregates and Metal Wastes Through Microwave Heating

Self-Healing Potential of Porous Asphalt Concrete Containing Different Aggregates and Metal Wastes Through Microwave Heating

Heating Characteristics and Induced Healing Efficiencies of Asphalt Mixture via Induction and Microwave Heating

Self-Healing Asphalt: A Systematic Bibliometric Analysis for Identification of Hot Research Topics during the 2003–2018 Period

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