Repair evaluation of concrete cracks using surface and through-transmission wave measurements

Aggelis, Dimitrios G.; Shiotani, Tomoki

doi:10.1016/j.cemconcomp.2007.05.001

Cited by 121 publications

(77 citation statements)

References 32 publications

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“…In the case of cracks perpendicular to the surface, the vibration analysis based on the baseline updating method allows to localize the cracks and to follow their propagation [10]. Surface and through-transmission waves are also used to evaluate the quality of cracks repair by resin injection [11]. Surface waves generated by pencil lead break are also exploited to follow the growth of a crack in concrete [12].…”

Section: Contextmentioning

confidence: 99%

Non-destructive evaluation of containment walls in nuclear power plants

Garnier¹,

Payan²,

Lott³

et al. 2017

AIP Conference Proceedings

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Section: Contextmentioning

confidence: 99%

Non-destructive evaluation of containment walls in nuclear power plants

Garnier¹,

Payan²,

Lott³

et al. 2017

AIP Conference Proceedings

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“…It has been correlated with strength (Kaplan 1959, Kaplan 1960, Kheder 1999, Qasrawi 2000, Naik et al 2004) and damage (Van Hauwaert et al 1998, Ono 1998, Mikulic et al 1999, Aggelis & Shiotani 2008a) of concrete materials, offering rough but valuable estimations because the damage condition influences the mechanical properties and, hence, the wave speed. Employing a number of sensors, the velocity structure of the material can be constructed and the internal condition can be visualized, highlighting the existence of voids or cracks (Sassa 1988, Kepler et al 2000, Kobayashi et 2007, Aggelis & Shiotani 2007b). Furthermore, the use of Rayleigh (or surface) waves seems quite suitable for surface opening cracks investigation, since they propagate along the surface of the structure.…”

Section: Longitudinal and Rayleigh Wavesmentioning

confidence: 99%

“…It is desirable to mitigate these deteriorating actions or even strengthen the structure by repair. Repair can take place in the form of cement injection either targeted to seal www.intechopen.com Elastic Waves on Large Concrete Surfaces for Assessment of Deterioration and Repair Efficiency 191 specific macroscopic cracks (Aggelis & Shiotani 2007b, Thanoon et al 2005, Issa & Debs 2007, Yokota & Takeuchi 2004, as well as a measure to reinforce the whole surface applying injection in a pattern of boreholes on the surface of the structure . Concerning specific macro-cracks, their depth can be evaluated by ultrasound either by the travel time of the longitudinal wave refracted from the tip of the crack, or the amplitude of the surface Rayleigh wave that survives beneath the crack (Doyle & Scala 1978, Hevin et al 1998, Liu et al 2001, Pecorari 2001, Song et al 2003, Zerwer et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, although specific cracks may be indicatively targeted for detailed measurements, it is also desirable to establish a way to evaluate the general conditions of a large area of the structure both before and after repair. The relative change of wave parameter values before and after maintenance actions offers a deterministic measure of repair efficiency (Kase & Ross 2003, Aggelis & Shiotani 2007b) which otherwise should be based solely on empirical criteria. This way the effectiveness of the repair can be quantified by the change of wave features, as elastic waves propagate in long distances through the material and gather information from different parts.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Elastic Waves on Large Concrete Surfaces for Assessment of Deterioration and Repair Efficiency

Aggelis¹,

Chai²,

Shiotani³

2012

Nondestructive Testing Methods and New Applications

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“…vibration-based methods [1], ground penetrating radar [2], acoustic emission [3], or infrared thermography [4]. Methods utilizing the phenomenon of wave propagation, including ultrasonic testing, the impact-echo method and the Lamb wave modes [5][6][7][8][9] are particularly interesting. The advantage of wave propagation-based methods is that they may be used in automatic structural health monitoring (SHM) systems.…”

Section: Introductionmentioning

confidence: 99%

A novel formulation of 3D spectral element for wave propagation in reinforced concrete

Rucka

Witkowski²,

Chróścielewski³

et al. 2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The paper deals with numerical simulations of wave propagation in reinforced concrete for damage detection purposes. A novel formulation of a 3D spectral element was proposed. The reinforcement modelled as the truss spectral element was embedded in the 3D solid spectral finite element. Numerical simulations have been conducted on cuboid concrete specimens reinforced with two steel bars. Different degradation models were considered to study the real behaviour of bended beams. In wave propagation modelling the spectral element method (SEM) plays an important role [16]. The SEM method is based on the high-order finite elements, usually of class C 0 . As a special feature, the elements have their nodes distributed both in physical space and in parent elements according to the Gauss-Lobatto-Legendre quadrature rule. As a consequence, it is possible to obtain a diagonal mass matrix at the element level which in turn, when appropriately taken into account, leads to fast and efficient time marching scheme. A multitude of aspects pertaining to SEM, especially for modelling of seismic waves (e.g. [17,18]) as well as for wave propagation for SHM purposes (e.g. [19]), have been already discussed. Spectral elements have been also developed for structural type finite elements like rods, beams or plates (e.g. [14,15,[20][21][22][23][24][25][26][27]), with the attention paid to theoretical aspects of wave propagation phenomena. In paper [28], 3-dimensional spectral elements have been presented, with application to damage detection in metal plate structures. Unbounded structures need a special treatment to preserve the dissipation of the energy in the infinite. The use of absorbing layers has been proposed in [29], on the example of a 1-dimensional rod and a 3-dimensional half-cylindrical shell. As far as damage detection is concerned, various techniques applied to simulation of damage effects have been considered. One can refer for instance to [20][21][22] where discontinuities in the form of cracks/caverns or point masses have been accounted for. A semi-analytical approach in analysis of flexural wave propagation through a slender beam, with a breathing edge-crack, is developed in [30]. In the context of non-homogenous material reference [31] discusses the use of the SEM with functionally graded material (FGM). To the authors' best knowledge, the problem of wave propagation in damaged reinforced concrete with the use of SEM has been not investigated.The present study focuses on development of a novel 3D spectral element for wave propagation in reinforced concrete subjected to mechanical degradation. Numerical simulations have been conducted on cuboid concrete specimens reinforced with two steel bars. Different degradation models were considered to reflect the real behaviour of bended beams described in [11].

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Repair evaluation of concrete cracks using surface and through-transmission wave measurements

Cited by 121 publications

References 32 publications

Non-destructive evaluation of containment walls in nuclear power plants

Non-destructive evaluation of containment walls in nuclear power plants

Elastic Waves on Large Concrete Surfaces for Assessment of Deterioration and Repair Efficiency

A novel formulation of 3D spectral element for wave propagation in reinforced concrete

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