沥青老化对多孔沥青混凝土诱导愈合效果的影响

Q2 Engineering

RILEM Technical Letters Pub Date : 2019-02-18 DOI:10.21809/RILEMTECHLETT.2018.74

Shi Xu, Xueyan Liu, A. Tabaković, E. Schlangen

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引用次数: 9

摘要

诱导愈合是一种行之有效的技术，能够提高沥青混凝土的自修复能力。愈合是通过感应电机产生的电磁电流实现的，在感应电机中，钢沥青成分加热，从而软化沥青层中的沥青，使其流动并闭合裂缝，修复损坏。本文研究了老化对多孔沥青（PA）混凝土愈合能力的影响。首先制备多孔沥青混凝土混合物，然后使用通风烘箱进行加速（实验室）老化过程。为了进一步评价沥青混凝土的诱导愈合效率，对沥青混凝土试件进行了半圆形弯曲（SCB）和愈合循环。结果表明，随着多孔沥青混凝土老化程度的增加，诱导愈合效率降低。

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

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.

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来源期刊

RILEM Technical Letters Materials Science-Materials Science (all)

CiteScore

5.00

自引率

0.00%

发文量

审稿时长

10 weeks