Experimental nondestructive detection on grout defects in a prefabricated concrete frame

Experimental nondestructive detection on grout defects in a prefabricated concrete frame

Xuan Zhang, Songtao Xue

Abstract. Researches on grout defects detection in prefabricated structures with rebars connected by sleeves are few at present. This study presents a nondestructive grout defects detection method based on wavelet packet analysis. An experiment is carried out on a prefabricated concrete frame with external sinusoidal excitation applied. Furthermore, structural acceleration responses are collected, and defects detection index the percentage of energy transfer (PET) is proposed based on wavelet packet analysis to identify the grout defects degree in sleeves and reasonable results are obtained.

Keywords
Nondestructive Detection, Grout Defects, Prefabricated Concrete Frame, Wavelet Packet Analysis

Published online 3/30/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Xuan Zhang, Songtao Xue, Experimental nondestructive detection on grout defects in a prefabricated concrete frame, Materials Research Proceedings, Vol. 27, pp 42-49, 2023

DOI: https://doi.org/10.21741/9781644902455-6

The article was published as article 6 of the book Structural Health Monitoring

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] Han J Q. Study on seismic performance of prefabricated-reinforce concrete junction. Chemical Engineering Transactions, 2016, 51, pp.1105-1110.
[2] Yin W Y, Xia S, Zhang X, et al. Precast concrete frame structure. Applied Mechanics and Materials, 2012, 256-259, pp.934-937. https://doi.org/10.4028/www.scientific.net/AMM.256-259.934
[3] Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Technical specification for precast concrete structures, Beijing, 2014.
[4] Zheng Q L, Wang N, Tao L, et al. Experimental study on effects of grout defects on the connection behaviors of grout sleeve splicing for reinforcing bars. Building Science, 2017, 33(5), pp.61-68.
[5] Zhang F W, Li X M, Gao R D, et al. Study on detection of grouting compactness of grout sleeve by portable X-ray technology. Construction Technology, 2017, 46(17), pp.6-9+61.
[6] Nie D L, Jia L G, Du M K, et al. Experimental study on detecting density of grouting materials for steel sleeves by using ultrasonic wave. Concrete, 2014, (9), pp.120-123.
[7] Liu H, Li X M, and Xu Q F. Test on detection of grouting compactness of grout sleeve by impact-echo method. Nondestructive Testing, 2017, 39(4), pp.12-16.
[8] Li X M, Gao R D, Xu Q F, et al. Experimental study on testing grouting plumpness of sleeve by hole-drilling method combined with endoscopy. Construction Technology, 2019, 48(9), pp.6-16.
[9] He H X,p Chen K and Yan W M. Structural seismic damage assessment based on wavelet packet transformation and time-varying frequencies. Journal of Vibration and Shock, 2016, 35(7), pp.23-30.
[10] Yang J G. Wavelet Analysis and its engineering applications. 1th ed. Beijing: China Machine Press, 2005.
[11] Li H N, Sun H M. Damage diagnosis of framework structure based on wavelet packet analysis and neural network. Earthquake Engineering and Engineering Vibration, 2003, 23(5), pp.141-148.