Print Email Facebook Twitter The Effect of Conductive Alginate Capsules Encapsulating Rejuvenator (HealRoad Capsules) on the Healing Properties of 10 mm Stone Mastic Asphalt Mix Title The Effect of Conductive Alginate Capsules Encapsulating Rejuvenator (HealRoad Capsules) on the Healing Properties of 10 mm Stone Mastic Asphalt Mix Author Tabakovic, A. (TU Delft Materials and Environment; TNO) Faloon, Christopher (Lagan Breedon House) O’Prey, Declan (Lagan Breedon House) Date 2022 Abstract Conductive alginate capsules encapsulating a bitumen rejuvenator (HealRoad capsules) has demonstrated good healing abilities in pure bitumen and mortar mixes. HealRoad capsules can efficiently heal damage via induction heating. They also release the encapsulated rejuvenator, thereby rejuvenating aged bitumen. These findings indicate that HealRoad capsules and induction heating systems combined could represent a possible asphalt pavement maintenance method. This paper investigated the effect of HealRoad capsules on the mechanical performance of the 10 mm stone mastic asphalt mix and measured the damage repair (healing) efficiency of the capsules in an asphalt mix. The results indicate that in small amounts, >1%, HealRoad capsules do not degrade the mix performance (indirect tensile strength and rutting resistance) and in some cases, the HealRoad capsules actually improve mix performance, e.g., in terms of the indirect tensile strength ratio (water sensitivity). However, the HealRoad capsules are unable to stimulate induction healing due to the small volume of capsules within the mix. Further investigation demonstrated that increasing the capsules in the mix to >5% can stimulate induction heating effectively. However, it also indicated that a high content of HealRoad capsules reduces the asphalt mix strength. The study has shown that HealRoad capsules are an effective healing system for high bitumen content mixtures such as mortar mixtures but is an inefficient healing system for a full asphalt mix, such as the 10 mm stone mastic asphalt mix Subject asphalt pavementsself-healinghybrid self-healing systeminduction heatingindirect tensile strengthwater sensitivitywheel tracking rutting resistance To reference this document use: http://resolver.tudelft.nl/uuid:c7a36940-8306-422c-8d78-fe595593a713 DOI https://doi.org/10.3390/app12073648 ISSN 2076-3417 Source Applied Sciences, 12 (7) Part of collection Institutional Repository Document type journal article Rights © 2022 A. Tabakovic, Christopher Faloon, Declan O’Prey Files PDF applsci_12_03648.pdf 36.8 MB Close viewer /islandora/object/uuid:c7a36940-8306-422c-8d78-fe595593a713/datastream/OBJ/view