Non-destructive evaluation of concrete quality using PZT transducers

다국어 초록 (Multilingual Abstract)

This paper presents a new concept of using PZT (lead zircornate titanate) transducers as a non-destructive testing (NDT) tool for evaluating quality of concrete. Detection of defects in concrete is very important in order to check the integrity of concrete structures. The electro-mechanical impedance (EMI) response of PZT transducers bonded onto a concrete specimen can be used for evaluating local condition of the specimen. Measurements are carried out by electrically exciting the bonded PZT transducers at high frequency range and taking response measurements of the transducers. In this study, the compression test results showed that concrete specimens without sufficient compaction are likely to fall below the desired strength. In addition, the strength of concrete was greatly reduced as the voids in concrete were increased. It was found that the root mean square deviation (RMSD) values yielded between the EMI signatures for concrete specimens in dry and saturated states showed good agreement with the specimens compressive strength and permeable voids. A quality metric was introduced for predicting the quality of concrete based on the dry-saturated state of concrete specimens. The simplicity of the method and the current development towards low cost and portable impedance measuring system, offer an advantage over other NDE methods for evaluating concrete quality.

참고문헌 (Reference)

1 Park, S, "Wireless impedance sensor nodes for functions of structural damage identification and sensor self-diagnosis" 18 (18): 2009

2 김정태, "Vibration and impedance monitoring for prestress-loss prediction in PSC girder bridges" 국제구조공학회 5 (5): 81-94, 2009

3 Tawie, R, "Using PZT sensors for detecting defects and characterizing quality of concrete" 2009

4 Bhalla, S, "Ultra low-cost adaptations of electro-mechanical impedance technique for structural health monitoring" 20 (20): 991-999, 2009

5 Sun, F.P, "Truss structure integrity identification using PZT sensor-actuator" 6 (6): 134-139, 1995

6 Patel, H.H, "The microstructure of concrete cured at elevated temperatures" 25 (25): 485-490, 1995

7 Bungey, J.H, "Testing of Concrete in Structures" Blackie Academic & Professional 1996

8 Bhalla, S, "Structural impedance based damage diagnosis by piezo-transducers" 32 (32): 1897-1916, 2003

9 Giurgiutiu,V, "Structural health monitoring with piezoelectric wafer active sensors" Elsevier 2008

10 ASTM C642, "Standard test method for density, absorption and voids in hardened concrete, Annual Book of ASTM Standards"

11 ASTM C39, "Standard test method for compressive strength of cylindrical concrete specimens, Annual Book of ASTM Standards"

12 ACI Committee 211, "Standard practice for selecting proportions for normal, heavyweight, and mass concrete"

13 ASTM C192, "Standard practice for making and curing concrete test specimens in the laboratory, Annual Book of ASTM Standards"

14 Park, S, "Sensor self-diagnosis using a modified impedance model for active sensing-based structural health monitoring" 8 (8): 71-82, 2009

15 Ayres, J.W, "Qualitative impedance based health monitoring of civil infrastructures" 7 (7): 599-605, 1998

16 Loctite, "Product catalog"

17 Piezo System, "Product catalog"

18 Park, G, "Piezoelectric active sensor self-diagnosis using electrical admittance measurements" 128 (128): 469-476, 2006

19 Bork, J.B, "Petrograhic examination of hardened concrete" 39 (39): 99-103, 1989

20 Park, G, "Overview of piezoelectric impedance-based health monitoring and path forward" 35 (35): 451-463, 2003

21 Tseng, K.K.H, "Non-parametric damage detection and characterization using smart piezoceramic material" 11 (11): 317-329, 2002

22 Tawie, R, "Monitoring the strength development in concrete by EMI sensing technique" 24 (24): 1746-1753, 2010

23 Chaudhry, Z.A, "Monitoring the integrity of composite patch structural repair via piezoelectric actuators/sensors"

24 Bahador, S.D, "Modeling of carbonation of PC and blended cement concrete" 2 (2): 59-67, 2009

25 Detwiler,R.J, "Microstructure and mass transport in concrete, Integrated Design and Environmental Issues in Concrete Technology" E & FN Spon 1996

26 Park, S, "MFC-based structural health monitoring using a miniaturized impedance measuring chip for corrosion detection" 18 (18): 139-150, 2007

27 Chaudhry, Z.A, "Local-area health monitoring of aircraft via piezoelectric actuator/sensor patches" 1995

28 Rossi,P, "Influence of cracking in the presence of free water on the mechanical behaviour of concrete" 43 (43): 53-57, 1991

29 Simmers Jr.,G.E, "Impedance-based structural health monitoring to detect corrosion" State University 2005

30 Koo, K.Y, "Impedance-based structural health monitoring considering temperature effects" 2007

31 Seunghee Park, "Health monitoring of steel structures using impedance of thickness modes at PZT patches" 국제구조공학회 1 (1): 339-353, 2005

32 Liang, C, "Electro-mechanical impedance modeling of active material systems" 5 : 171-186, 1996

33 Sohn, H, "Debonding monitoring of CFRP strengthened RC beams using active sensing and infrared imaging" 4 (4): 391-406, 2008

34 Dow Corning, "Data sheet"

35 Tseng, K.K, "Damage identification of civil infrastructures using smart piezoceramic sensors" 2002

36 Rickli, J.L, "Damage detection in assembly fixtures using non-destructive electromechanical impedance sensors and multivariate statistics" 42 (42): 1005-1015, 2009

37 Mehta, P.K, "Concrete: microstructure, properties, and materials" Mc Graw Hill 2006

38 Safiuddin, M, "Comparison of ASTM saturation techniques for measuring the permeable porosity of concrete" 35 (35): 1008-1013, 2005

39 Soh, C.K, "Calibration of piezo-impedance transducers for strength prediction and damage assessment of concrete" 14 (14): 671-684, 2005

40 Kim, J, "An all-digital low-power structural health monitoring system" 2007

41 Agilent, "Agilent Impedance Measurement Handbook: A guide to measurement technology and techniques, 4th Edition"

42 Yaman, I.O, "Active and non-active porosity in concrete Part I:Experimental evidence" 35 (35): 102-109, 2002

43 Matthews, S, "Achieving durable repaired concrete structures-a performance-based approach" 161 (161): 17-28, 2008

44 Dugnani, R, "A novel impedance-based sensor technique for real time, in vivo, unstable plaque characterization" 2002

45 Yang, Y, ""Practical issues related to the application of the electromechanical impedance technique in the structural health monitoring of civil structures:I.Experiment",Smart Mater.Struct" 17 (17): 2008

46 Shin, S.W, ""Piezoelectric sensor based nondestructive active monitoring of strength gain in concrete",Smart Mater.Struct" 17 (17): 2008