Determination of volumetric water content of concrete using ground-penetrating radar

Klysz, Gilles; Balayssac, Jean-Paul

doi:10.1016/j.cemconres.2007.04.010

Cited by 125 publications

(47 citation statements)

References 11 publications

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“…Detecting water content is an important phase for the diagnosis of concrete. Klysz et al (2007) observed a linear relation between the velocity of propagation of the direct wave and moisture. In addition, GPR can be successfully used for the location of salt ingress due to the influence of chloride content on the permittivity of the concrete (Sbartaï et al 2006).…”

Section: Concrete Structuresmentioning

confidence: 92%

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Solla

Lorenzo

Martínez-Sánchez

et al. 2015

Civil Engineering Applications of Ground Penetrating Radar

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Preservation and maintenance of transport infrastructure is a global concern that affects social and economic development in all countries. During the last decades, there has been a continuous increase in the use of non-destructive testing (NDT) applied to many aspects related to civil engineering field. Ground Penetrating Radar (GPR) has become an established method of inspection. This paper presents a compilation of works in the frame of the applications of GPR and other NDT methods in the evaluation of transport infrastructures. Published works in roads and pavements, concrete and masonry structures, and tunnel testing are mentioned. It has been demonstrated that such methods have significantly benefited the procedures for inspection and also, successfully solved some of the limitations of traditional methods.

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Section: Concrete Structuresmentioning

confidence: 92%

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Solla

Lorenzo

Martínez-Sánchez

et al. 2015

Civil Engineering Applications of Ground Penetrating Radar

View full text Add to dashboard Cite

show abstract

“…This chemical reaction also poses significant effects on the concrete dielectric properties because water in free form (early age) responses a larger degree of polarization than water in physically and chemically bound form [10]. The effect of water also significantly disperses GPR wave with different frequencies when its content is high [11]. This effect is best illustrated in early-aged concrete instead of old concrete because hydration process varies water content from free to bound form [10,12].…”

Section: Introductionmentioning

confidence: 95%

Frequency-dependent dispersion of high-frequency ground penetrating radar wave in concrete

Lai

Kind

Wiggenhauser

2011

NDT & E International

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“…However, the literature reports only few applications for the quantification of moisture surface gradient in concrete (Klysz and Balayssac 2007).…”

Section: Introductionmentioning

confidence: 99%

Ground Penetrating Radar: an Application to Estimate Volumetric Water Content and Reinforced Bar Diameter in Concrete Structures

Leucci

2012

ACT

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Non-destructive evaluation of reinforced concrete structures is an increasingly important field in the construction and civil engineering community. A large number of pathologies affecting both the concrete and the reinforced bar inside the concrete are related to the presence of water and its spatial development. In this context, the quantification of both water content and bar diameter is an important part of the diagnosis of concrete. The aim of this paper is to present the results of two important studies undertaken in order to estimate the volumetric water content and bar diameter in concrete structures. The dielectric properties of concrete were studied as a function of volumetric water content. Experimental tests were carried out using an HP impedance analyzer. More than 800 samples of concrete were analyzed and a new relationship between the relative dielectric constant and volumetric water content was obtained. Further experimental tests were carried out by using GPR travel time tomography to study the effectiveness of the new relationship between the relative dielectric constant and volumetric water content. The study was subsequently focused on rebar sizes estimation inside concrete structures. Models were reproduced in the laboratory using a range of rebar sizes from 8 to 22 mm. These models, which represent rebars in a concrete medium, were used to detect rebar's position and study the rebar sizes as a function of the ratio of the cross polarized to normal polarized electromagnetic wave amplitudes. GPR measurements, using the 1 GHz center frequency antenna, were performed on the model reproduced in the laboratory. The results of the GPR measurements were compared with the results of a simulation forward model, proposing an empirical relationship between rebar sizes and the ratio of the cross polarized to normal polarized electromagnetic wave amplitudes. Furthermore, several experimental tests were carried out by using a GPR to study the effectiveness of the proposed relationship.

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Determination of volumetric water content of concrete using ground-penetrating radar

Cited by 125 publications

References 11 publications

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Applications of GPR in Association with Other Non-destructive Testing Methods in Surveying of Transport Infrastructures

Frequency-dependent dispersion of high-frequency ground penetrating radar wave in concrete

Ground Penetrating Radar: an Application to Estimate Volumetric Water Content and Reinforced Bar Diameter in Concrete Structures

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