Effect of air voids content on asphalt self-healing via induction and infrared heating

Gómez-Meijide, Breixo; Ajam, Harith; Lastra-González, Pedro; García, Álvaro

doi:10.1016/j.conbuildmat.2016.09.115

Cited by 98 publications

(27 citation statements)

References 15 publications

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“…The reason for this is that during 3‐point bending fracture at −20 °C some aggregates broke and these cannot be healed. By using this testing method, there was no particular difference between dense and porous asphalt mixture …”

Section: Induction Healingmentioning

confidence: 95%

“…Heat is generated through the energy lost when eddy currents meet with the resistance of the electromagnetic embedded particles . Because of the increase of temperature, the viscosity of bitumen will reduce and its volume will increase due to thermal expansion, flowing into and filling the cracks …”

Section: Induction Healingmentioning

confidence: 99%

“…In the HEALROAD project, the self‐healing capacity of asphalt mixture was defined by two different methods. First, as the relationship between the 3‐point bending strength of an asphalt beam, at −20 °C, before and after applying induction heating . Secondly, as the increase of durability of an asphalt beam that has been subjected to 3‐point fatigue bending and induction heating at some point during the fatigue testing, when compared to the durability of a beam subjected to 3‐point fatigue bending where induction heating has not been applied.…”

Section: Induction Healingmentioning

confidence: 99%

“…After the temperature of asphalt reaches steady‐state conditions, the volumetric properties of bitumen remain constant and bitumen flows downward due to gravity. Therefore, cracks tend to reopen from the upper asphalt surfaces …”

Section: Induction Healingmentioning

confidence: 99%

See 3 more Smart Citations

Self‐Healing Asphalt Review: From Idea to Practice

García

et al. 2018

Adv Materials Inter

137

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In recent decades, researchers have revealed the great healing potential of asphalt and proposed various novel methods to inspire and improve the self‐healing capacity of asphalt aimed to prolong the service life of asphalt pavement. In this review, up to date research progresses in induction healing and embedded rejuvenator encapsulation are presented, respectively. Meanwhile, the trial section applications of induction healing and capsule healing are highlighted, which show promising results. Finally, some recommendations for the future development of self‐healing asphalt are proposed.

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Section: Induction Healingmentioning

confidence: 95%

Section: Induction Healingmentioning

confidence: 99%

Section: Induction Healingmentioning

confidence: 99%

Section: Induction Healingmentioning

confidence: 99%

See 2 more Smart Citations

Self‐Healing Asphalt Review: From Idea to Practice

García

et al. 2018

Adv Materials Inter

137

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“…As a temperature sensitive material, the self-healing capacity of asphalt concrete can be enhanced by increasing the ability of wetting and diffusion of asphalt molecules through heating [3]. For this reason, an advanced self-healing technology named induction healing was developed to enhance the self-healing capacity of asphalt concrete through induction heating [4][5][6]. Steel fibers were added to the asphalt mixture to make it electrically conductive and induction heating was applied to increase the healing capacity of asphalt concrete when cracks occurred in asphalt mastic [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Research on the Mechanical, Thermal, Induction Heating and Healing Properties of Steel Slag/Steel Fibers Composite Asphalt Mixture

Liu

Schlangen

et al. 2017

Applied Sciences

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Abstract:In this paper, steel slag/steel fiber composite asphalt mixture were prepared. The effects of the addition of steel slag and/or steel fibers on the mechanical, thermal, induction heating and healing properties of asphalt mixture were investigated. The results showed that adding steel slag and/or steel fibers improves the water stability, particle loss resistance and fracture energy of asphalt mixtures. The addition of steel fibers increased the thermal conductivity and thermal diffusion of the asphalt mixture, and steel slag showed a reverse effect. Steel slag asphalt mixture cooled more slowly than steel fiber asphalt mixture, which is beneficial to crack healing of asphalt mixture. The composite of steel fibers and steel slag can enhance the induction heating speed, heating homogeneity and thus enhance the induction healing ratio of asphalt mixture. It is concluded that steel slag/steel fibers composite asphalt mixture achieves good mechanical and induction healing properties.

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