Detections of interfacial debonding defects of steel- UHPC composite slab based on PZT impedance technology

Author(s): Qiqi Zou, Banfu Yan,Baoyang Wang
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 604-611
Total Pages: 08
Language: English

Abstract: A lightweight composite bridge deck system composed of steel deck and thin Ultra High Performance Concrete (UHPC) layer is proposed to relieve damage in asphalt surfacing and fatigue cracking in steel decks. The piezoelectric (PZT) impedance technology is employed to detect the interfacial debonding defects between the steel deck and the UHPC layer. The experimental studies on a steel-UHPC slab with artificial defects in different sizes indicate that the variation of impedance-frequency curve of PZT can reflect the existence of local interfacial debonding failures.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00

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