Non-Destructive Concrete Strength Evaluation Using PZT Based Surface Wave Propagation Technique – A Comparative Study

Kwong, Kok Zee; Lim, Yee Yan; Liew, Willey Yun Hsien

doi:10.1051/matecconf/20164702014

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…According to BS8110-2-1985 [37], the dynamic modulus of elasticity of the concrete is linearly proportional to the static modulus. Concrete strength can be correlated to the dynamic modulus [31], through empirical relationship, such as the one proposed by American Concrete Institute [38]:…”

Section: Theoretical Derivation Of Dynamic Modulus Poisson's Ratio An...mentioning

confidence: 99%

“…Recently, Kwong et al conducted a feasibility study on parametric mortar strength prediction throughout the curing process utilizing the PZT transducer based WP technique [31]. A semi-analytical model was proposed to quantitatively relate the wave velocity obtained from the sensor's electrical signatures to the dynamic modulus of elasticity and the mortar strength.…”

Section: Introductionmentioning

confidence: 99%

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Non-destructive concrete strength evaluation using smart piezoelectric transducer—a comparative study

Lim

Kwong

Liew

et al. 2016

Smart Mater. Struct.

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Concrete strength monitoring, providing information related to the readiness of the structure for service, is important for the safety and resource planning in the construction industry. In this paper, a semi-analytical model of surface bonded piezoelectric (lead zirconate titanate) based wave propagation (WP) technique was developed for strength evaluation of mortar with different mix, throughout the curing process. Mechanical parameters of the mortar specimen were mathematically evaluated from the surface wave (R-wave) and pressure wave (P-wave) using elastic wave equations. These parameters were then empirically correlated to the strength. The model was found to be very robust as it could be generalized to account for different water to cement (W/C) ratio. The performance of the WP technique was then compared to the electromechanical impedance technique and other conventional techniques, such as the ultrasonic pulse velocity (UPV) test and the rebound hammer test. Results showed that the WP technique performed equally well as the conventional counterparts. The proposed technique is also advantageous over embedded WP technique and the UPV test, in terms of its capability to capture two types of waves for the evaluation of dynamic modulus of elasticity and Poisson's ratio. A separate study was finally conducted to verify the applicability of this technique on heterogeneous concrete specimen. With the inherent capability of the WP technique in enabling autonomous, real-time, online and remote monitoring, it could potentially replace its conventional counterparts, in providing a more effective technique for the monitoring of concrete strength.

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Section: Theoretical Derivation Of Dynamic Modulus Poisson's Ratio An...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non-destructive concrete strength evaluation using smart piezoelectric transducer—a comparative study

Lim

Kwong

Liew

et al. 2016

Smart Mater. Struct.

Self Cite

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“…e conventional detection techniques can be classified into destructive and nondestructive evaluation techniques [12]. e destructive evaluation technique usually refers to the core test method and the loading test method, which leads to the artificial and unexpected permanent damage of the structure [13].…”

Section: Introductionmentioning

confidence: 99%

“…e destructive evaluation technique usually refers to the core test method and the loading test method, which leads to the artificial and unexpected permanent damage of the structure [13]. e nondestructive evaluation techniques include the ultrasonic method, percussion method, infrared thermal imaging method, electromagnetic pulse method, laser shear imaging method, impact-echo method, and ground penetrating radar method [12][13][14]. Ultrasonic detection results are relatively discrete and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Interface Debonding Detection of Precast Segmental Concrete Beams (PSCBs) Using Piezoceramic Transducer‐Based Active Sensing Approach

Liu

Zhang

Yin

et al. 2019

Mathematical Problems in Engineering

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An active sensing approach using piezoceramic induced stress wave is proposed to provide monitoring and early warning for the development of interface debonding damage of precast segmental concrete beams (PSCBs). Three concrete specimens with toothed interfaces were fabricated and bonded with high-strength epoxy resin adhesive to form PSCBs. Smart aggregates (SAs) embedded in concrete specimens are used as actuators and sensors. The PSCBs are subjected to periodic loading with hydraulic jack to test the different degrees of debonding damage. The experimental results of time-domain and frequency-domain analysis clearly show that the amplitude of the signal received by the piezoceramic sensor is reduced when debonding crack occurs. The energy analysis and damage index based on wavelet packet can be used to determine the existence and severity of interface debonding damage in PSCBs. The experimental research validates the feasibility of monitoring the interface debonding damage in PSCBs using SA transducers based on active sensing technique.

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“…The method implies product sounding with short ultrasonic pulses and recording the intensity and the arrival time of the echo signals reflected from discontinuities and inclusions. The methods of nondestructive testing of concrete defects that have been developed in recent years employ Rayleigh waves which are most sensitive to the near-surface cracks oriented vertically to the surface as compared to longitudinal waves [6,7]. In [8], an approach to assess the real size of the defects using the shadow method of ultrasonic testing is proposed.…”

Section: Introductionmentioning

confidence: 99%

Method for Separation of Electromagnetic Responses of Mechanoelectrical Transformations Under the Impact of External Noise

et al. 2016

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Abstract. The paper addresses the diagnosis of the presence of defects in concrete, cement-sand and other building and structure mixes using mechanoelectrical transformations. The problem of high levels of electromagnetic noise and interference affecting the correct interpretation of the data to diagnose presence of defects is considered. A version of the electromagnetic response from the unit heterogeneity is proposed, and the assumption of the total electromagnetic signal is suggested. The experiment on acoustic excitation of the sample was conducted and the electromagnetic responses were recorded and filtered using the correlation analysis. The obtained result was compared to the model one to confirm the single response model.

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Non-Destructive Concrete Strength Evaluation Using PZT Based Surface Wave Propagation Technique – A Comparative Study

Cited by 4 publications

References 7 publications

Non-destructive concrete strength evaluation using smart piezoelectric transducer—a comparative study

Non-destructive concrete strength evaluation using smart piezoelectric transducer—a comparative study

Interface Debonding Detection of Precast Segmental Concrete Beams (PSCBs) Using Piezoceramic Transducer‐Based Active Sensing Approach

Method for Separation of Electromagnetic Responses of Mechanoelectrical Transformations Under the Impact of External Noise

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