Electromechanical Response of Smart Ultra-High Performance Concrete under External Loads Corresponding to Different Electrical Measurements

被引：21
作者：
Kim, Min Kyoung [1 ]
Le, Huy Viet [1 ,2 ]
Kim, Dong Joo [1 ]
机构：
[1] SEJONG Univ, Dept Civil & Environm Engn, 209 Neungdong Ro, Seoul 05006, South Korea
[2] Hanoi Univ Min & Geol, Dept Civil Engn, Hanoi 100000, Vietnam
来源：
SENSORS | 2021年 / 21卷 / 04期
关键词：
smart materials; damage mechanics; self-sensing mechanism;
D O I：
10.3390/s21041281
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This study investigated the electromechanical response of smart ultra-high-performance concretes (smart UHPCs), containing fine steel slag aggregates (FSSAs) and steel fibers as functional fillers, under external loads corresponding to different measurement methods. Regardless of different measurement methods of electrical resistance, the smart UHPCs under compression showed a clear reduction in their electrical resistivity. However, under tension, their electrical resistivity measured from direct current (DC) measurement decreased, whereas that from alternating current (AC) measurement increased. This was because the electrical resistivity, from DC measurement, of smart UHPCs was primarily dependent on fiber crack bridging, whereas that from AC measurement was dependent on tunneling effects.
引用
收藏
页码：1 / 19
页数：18
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