The influence of asphalt ageing on induction healing effect on porous asphalt concrete

RILEM Technical Letters

article

Shi Xu¹  Xueyan Liu¹  Amir Tabaković¹  Erik Schlangen¹ 

[1] Delft University of Technology;Technological University Dublin;School of Civil Engineering, University College Dublin

关键词: Induction heating;    asphalt;    semi-circular bending;    ageing;    self-healing;   

DOI  :  10.21809/rilemtechlett.2018.74

学科分类：社会科学、人文和艺术（综合）

来源: RILEM Publications SARL

【 摘 要 】

Induction healing is a proven technology which is able to improve the self-healing capacity of asphalt concrete. Healing is achieved via electromagnetic current produced by passing induction machine, where steel asphalt constituents heat up which in turn soften the bitumen in the asphalt layer, allowing it to flow and close cracks, repairing the damage. This paper reports on the study which investigated the influence of ageing on the healing capacity of Porous Asphalt (PA) concrete. Porous Asphalt concrete mix was prepared first,  then subjected to an accelerated (laboratory) ageing process using a ventilated oven. In order to further evaluate the induction healing efficiency of asphalt concrete,  Semi-circular bending (SCB) and healing cycles were performed on asphalt concrete specimens. The results show that with an increase of the ageing level of porous asphalt concrete, the induction healing efficiency decreases.

【 授权许可】

CC BY