Microwave heating mechanism and self-healing performance of asphalt mixture with basalt and limestone aggregates

Fu, Wang; Zhu, Hongbin; Shu, Benan; Li, Yuanyuan; Gu, Dengjun; Gao, Yangming; Chen, Anqi; Feng, Jianying; Wu, Shaopeng; Liu, Quantao; Li, Chao

doi:10.1016/j.conbuildmat.2022.127973

Cited by 24 publications

(7 citation statements)

References 47 publications

(61 reference statements)

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“…Microwave-absorbing materials generate volumetric heat as a result of the interaction between propagating waves [111][112][113]. Short reaction times, easy control, improved reaction kinetics, reduced heat loss, clean heating processes, good energy efficiency, and environmental protection are only a few advantages of MW-T over conventional heating techniques [48,109,114,115]. These heating qualities make it possible to cure concrete in an eco-friendly way.…”

Section: Microwave Treatment (Mw-t) Methodologymentioning

confidence: 99%

Novel Processing Methods of Low-Clinker Multi-Component Cementitious Materials—A Review

Lisowski,

Glinicki

2024

Applied Sciences

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The wide use of multi-component cement of highly reduced Portland clinker factor is largely impeded by detrimental changes in the rheological properties of concrete mixes, a substantial reduction in the early rate of cement hardening, and sometimes the insufficient strength of mature concrete. Therefore, major changes are needed in traditional concrete-production technologies if low-clinker cement is to gain wider acceptance. This review’s goal is to summarize the impacts of using non-ionizing radiation methods to improve the dispersion of concrete mix constituents, cement setting, and early hardening. The potential impacts of such interactions on the permeability and strength of concrete are also highlighted and investigated. Their intriguing potential for delivering additional energy to cementitious mixtures is analyzed for batch water, solid non-clinker constituents of cement (mainly supplementary cementitious materials), and their mixtures with aggregates. The advantages of adopting these non-traditional methods are found to be highly alluring to the greener preparation techniques used in the construction materials sector.

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Section: Microwave Treatment (Mw-t) Methodologymentioning

confidence: 99%

Novel Processing Methods of Low-Clinker Multi-Component Cementitious Materials—A Review

Lisowski,

Glinicki

2024

Applied Sciences

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“…The basic principle is that the direction of the electric polarity molecules in the object will vibrate with the oscillating electric field, and the inherent electromagnetic field of a molecule is changed and affects the adjacent molecules, so the vibration of the molecule is in the molecule passed between under the action of the electromagnetic field oscillated by microwave high frequency. Molecular vibration is internal energy, and increasing internal energy is like heating an object [66]. Microwaves cannot heat non-polar molecules.…”

Section: Microwave Heatingmentioning

confidence: 99%

A Methodological Review on Development of Crack Healing Technologies of Asphalt Pavement

et al. 2023

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Crack healing has been a key area of asphalt pavement research. In this review, different crack-healing theories and crack-healing evaluation methods in bitumen and asphalt mixtures are summarized and presented. Then different crack healing technologies have highlighted the problems and solutions associated with their implementation. Detailly, traditional technologies (hot pouring and fog seal) are introduced. They mainly fill cracks from the outside, which can effectively prevent further damage to the asphalt pavement, when the cracks have generally developed to the middle and late stages of practical engineering. Their extension of the life of the asphalt pavement is relatively limited. Energy supply technologies (induction and microwave heating) have demonstrated significant efficacy in enhancing the crack healing capability of asphalt pavement, particularly in microcracks. Now, Extensive laboratory testing and some field test sections have been conducted and they are waiting for the promotion from the industry. The agents encapsulated technologies (Saturated porous aggregates encapsulate rejuvenators, Core-shell polymeric microcapsules, Ca-alginate capsule, Hollow fibers and Compartment fibers) not only heal cracks but rejuvenate the aged asphalt pavement. In order to promote industrial application, more field test sections and large industrial mixing and compaction equipment applications need to be implemented. Finally, some other potential crack healing techniques (coupling application, electrical conductivity, 3D printing, and modifications) are also mentioned.

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“…All the above studies on thermal induction techniques were carried out on a single mixture layer without establishing a connection with the asphalt or asphalt mortar layer. Wang, Fu et al [21] studied, through the heating rate test, semi-circular bending test (SCB) test, and fatigue test of an asphalt mixture, its heating characteristics, flexural strength, fatigue resistance, and self-healing performance. The results showed that, after microwave heating, the flexural strength and fatigue resistance of an asphalt mixture with basalt and limestone aggregates can recover at least 65% and 23%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Induction Heating and Self-Healing Properties of Steel Slag Powder Based Asphalt and Asphalt Mixture under Microwave Irradiation

Sun

Luo

2023

Materials

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This paper aims to study the application feasibility of steel slag powder (SSP) in replacing limestone powder (LP) to enhance the heat release and self-healing properties of asphalt and an asphalt mixture. First, the microwave-heating characteristics of SSP and LP asphalt mortar were analyzed, and the differences in the microstructure and chemical composition between SSP and LP were compared. Secondly, through the DSR frequency sweep test, the optimal healing temperature of the two asphalt mortars was determined. Finally, asphalt mixtures with different SSP contents were prepared by replacing part of LP in the mixture in a gradation with SSP. Under microwave radiation, the temperature distribution of the mixture was explored, and the self-healing properties and factors affecting the healing were analyzed. Results demonstrated that there are metal oxides with high electromagnetic parameters such as Fe2O3 and CaO in SSP, therefore, asphalt and a mixture containing SSP were seen to have excellent microwave absorption capacity. The healing temperature of the two kinds of asphalt mortar was between ~50 °C and 60 °C. Under microwave radiation, the temperature of the asphalt mixture increased with the increase in SSP content, and the temperature difference decreased with the increase in SSP content. Asphalt mixtures with an LP content of 30%, 40%, 50%, 60%, and 70% replaced by SSP increased the healing index by 8.7%, 17.3%, 22.1%, 26.9%, and 27.7% compared with conventional asphalt mixtures. Temperature is the most important factor affecting the healing behavior of the asphalt mixture. With the increase in the damage times of the asphalt mixture, the overall healing index of the asphalt mixture showed a downward trend. However, the healing index of an asphalt mixture containing SSP can still be maintained at more than 50% after repeated mechanical damage.

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Microwave heating mechanism and self-healing performance of asphalt mixture with basalt and limestone aggregates

Cited by 24 publications

References 47 publications

Novel Processing Methods of Low-Clinker Multi-Component Cementitious Materials—A Review

Novel Processing Methods of Low-Clinker Multi-Component Cementitious Materials—A Review

A Methodological Review on Development of Crack Healing Technologies of Asphalt Pavement

Enhanced Induction Heating and Self-Healing Properties of Steel Slag Powder Based Asphalt and Asphalt Mixture under Microwave Irradiation

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