Small crack detection in cementitious materials using nonlinear coda wave modulation

Hilloulin, Benoît; Zhang, Yuxiang; Abraham, Odile; Loukili, Ahmed; Grondin, Frédéric; Durand, Olivier; Tournat, Vincent

doi:10.1016/j.ndteint.2014.08.010

Cited by 67 publications

(51 citation statements)

References 34 publications

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“…When concrete cracks are generated, some features of the crack can be expressed by the waveform changes, amplitude value and the transmitting time of ultrasonic wave [27,28]. Figure 9 displays representative ultrasonic waveforms for the Control sample, GM, CM and GCM obtained in the stages of pre-cracked (small picture) and healed for 20 days (large picture) respectively.…”

Section: Ultrasonic Analysismentioning

confidence: 99%

Effect of Graphene and Carbon Fiber on Repairing Crack of Concrete by Electrodeposition

Yang¹

2019

Ceramics - Silikaty

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For many years, researches have investigated concrete repair technologies including epoxy resin injection technology, bioremediation technology and self-healing technology. However, these repair methods have proven to be expensive and cumbersome to be carry out. A more recent technology electrochemical deposition, the focus of this paper emphases in a new way of healing concrete cracks that restores durability and mechanical strength of a concrete structure. Therefore, the emphasis of the research work reported here in is to prove the repair efficiency of the electrodeposition method by adding carbon fiber and graphene to the concrete. By analyzing the mass change of the concrete, total charge passed, crack width variation, ultrasonic waves, sediment composition and morphology, it was found that the cracks with width of 0.3-0.5 mm in samples healed within 20 days. The repair efficiency of samples mixed with carbon fiber and graphene were better than specimens without carbon fiber and graphene. Moreover, the mass increase rate of a concrete samples mixed with carbon fiber and graphene was 10.15 ‰, which is twice the mass of conventional concrete. The results of SEM and X-ray diffraction analysis showed that the samples mixed with carbon fiber and graphene produced more ZnO and that had a continuous compact structure.

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Section: Ultrasonic Analysismentioning

confidence: 99%

Effect of Graphene and Carbon Fiber on Repairing Crack of Concrete by Electrodeposition

Yang¹

2019

Ceramics - Silikaty

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“…Consolidated granular media and in particular concrete exhibit a strong nonlinear hysteretic elastic behavior when excited by ultrasonic wave perturbations [23][24][25][26][27][28]. The nonlinear behavior is strongly enhanced when the concrete is damaged [29].…”

Section: Application To Nonlinear Characterization Of Concretementioning

confidence: 99%

Time Domain Analysis of Elastic Nonlinearity in Concrete Using Continuous Waves

Bentahar¹,

Mechri²,

Antonaci³

et al. 2019

Acoustics of Materials

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Concrete and consolidated granular media in general exhibit a strong nonlinear hysteretic elastic behavior when excited by ultrasonic wave perturbations. Due to the sensitivity of their elastic properties to the small changes that can appear in their microstructure, the dynamic stress-strain relationship considered at low strains is affected by the presence of microcracks and hence the progression of damage. Tracking the nonlinear behavior can be made through the dependence on the excitation amplitude of the amplitude of higher order harmonics or of the resonance frequency of the sample. The present chapter shows a time domain analysis of elastic nonlinearity based on the break of the superposition principle when ultrasonic continuous waves are propagating in concrete samples. The latter, which can be of different microstructures (grain sizes, mortar, or polymer matrix), helps to understand the physical mechanisms involved in the different nonlinear elastic responses.

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“…By mixing nonlinear coda waves with low‐frequency swept pump waves, small cracks can be detected globally. Based on studies by Zhang et al, Hilloulin et al optimized this evaluation method for detecting microcracks in cementitious materials. Finally, in combination with additional nondestructive techniques such as 3D microscopy and X‐ray tomography, autogenous crack healing of mortar samples could be demonstrated .…”

Section: Healing Efficiencymentioning

confidence: 99%

“…In time domain, the velocity of the ultrasonic signals (derived out of the “time of flight”) is an important parameter of the signal . Other useful information for the characterization or monitoring of concrete structures, mainly based on coda waves, can be provided by the amplitude or energy of the full signal waveform in terms of coda wave interferometry . A transformation into the frequency domain can give further insight into material properties.…”

Section: Introductionmentioning

confidence: 99%

Validation of Self‐Healing Properties of Construction Materials through Nondestructive and Minimal Invasive Testing

Snoeck

Malm

Cnudde

et al. 2018

Adv Materials Inter

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When studying the self‐healing properties of construction materials, a plethora of destructive and nondestructive testing (NDT) techniques can be used. In this review, the applicability of different nondestructive test methods is discussed in detail. The methods can be categorized whether they are used to study the encapsulation and/or protection mechanism of the healing agent, the sequestered healing agent itself, the distribution of healing agents, the trigger mechanism for healing, the healing efficiency, or healing performance. Based on this categorization, nondestructive techniques found in literature are discussed. In this way, a robust understanding of the different techniques can be used for future research on self‐healing construction materials.

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Small crack detection in cementitious materials using nonlinear coda wave modulation

Cited by 67 publications

References 34 publications

Effect of Graphene and Carbon Fiber on Repairing Crack of Concrete by Electrodeposition

Effect of Graphene and Carbon Fiber on Repairing Crack of Concrete by Electrodeposition

Time Domain Analysis of Elastic Nonlinearity in Concrete Using Continuous Waves

Validation of Self‐Healing Properties of Construction Materials through Nondestructive and Minimal Invasive Testing

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