Using radar direct wave for concrete condition assessment: Correlation with electrical resistivity

Sbartaï, Zoubir Mehdi; Laurens, Stéphane; Rhazi, J.; Balayssac, Jean-Paul; Arliguie, G.

doi:10.1016/j.jappgeo.2007.02.003

Cited by 69 publications

(34 citation statements)

References 18 publications

(22 reference statements)

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“…However, other antenna parameters, such as the signal amplitude of the wavelet, can be used to evaluate the EM properties of the material in the region near the antennas, where the signal propagates through a surface material [10] and [11]. The potential of estimating the soil's dielectric parameters using the high attenuation and temporal stretching of the EM signal amplitude has been demonstrated experimentally and validated by numerical simulations and on-site measurements [12].…”

Section: Methodsmentioning

confidence: 99%

“…Several controlled experiments, numerical simulations, and 'real-life' applications have been conducted to study the effects of EM parameter variations on antenna-material coupling [11]. This introductory paper shows archaeological and cultural heritage applications of examining very low EM signal amplitudes that are caused by high attenuation, poor antenna coupling, and temporal stretching.…”

Section: Final Remarks and Conclusionmentioning

confidence: 99%

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Detecting Moisture Damage in Archaeology and Cultural Heritage: a Brief Introduction

Ferrara¹,

Barone²

2015

IJA

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Abstract:Moisture damage is the most important issue in the preservation and integrity of cultural heritage. This paper discusses the ability of geophysical instruments to detect this problem. Non-destructive techniques (NDTs), such as Ground Penetrating Radar (GPR), use electromagnetic (EM) impulses to investigate archaeological sites and building structures that are affected by moisture and can be used to locate and estimate the extent of damage and to develop restoration plans before permanent damage occurs. The main objective of this paper is to introduce the capacity of surface GPR to rapidly and non-invasively estimate physical soil properties, develop novel processing strategies and provide valuable information about the investigated material in archaeological and cultural heritage sites. This new approach analyzes the amplitude attributes of the GPR pulse obtained from conventional single-offset surface-coupled profiling. To achieve the objective of this study, the technique is examined in two different experimental test settings to show that GPR analyses clearly highlight dampness as ringing anomalies with a very low EM signal amplitudes that are caused by high attenuation, poor antenna coupling, and temporal stretching. These indicators are important for diagnosing cultural heritage sites by allowing for the correct and precise visualization of radargrams and time-slices of the moisture anomalies.

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Section: Methodsmentioning

confidence: 99%

Section: Final Remarks and Conclusionmentioning

confidence: 99%

Detecting Moisture Damage in Archaeology and Cultural Heritage: a Brief Introduction

Ferrara¹,

Barone²

2015

IJA

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“…Th e G PR method is widely used in civil engineering to detect c r a c ks between concrete and steel [17][18][19][20][21][22][23][24][25][26][27][28][29]; in hydrogeology and sedimentology [13,[30][31][32]; in archelogy [33,34]; in agriculture for soil types [35]. Despite of the small depth of investigation of GPR, this nondestructive technique has become more popular in recent years for the evaluation of near surface structures through its simplicity and speed of implementation.…”

Section: Internal Structure Of the Dam From Geophysical Observation Gmentioning

confidence: 99%

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Yaya¹,

Cheng²

2016

J Civil Environ Eng

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The tailing management is a long term concern for environment and social security. Following the discovery of a new gold mineralization, a mining company aims at reusing one of tailings storage facility at the mining site. However, there is a small treated water reservoir (polishing pond) downstream of the Northwest dam. It is therefore important to know the present state of the Northwest dam's internal structure. Geophysical methods of electrical resistivity and georadar were used for the auscultation of the Northwest dam. Numerical models were subsequently used to assess the geotechnical behavior of the dam in different deposition situations by simulating the restoration.The image processing results of georadar data show a layered structure near the surface. Changes in electrical resistivity offer deeper information than georadar. The lateral variability of the electrical resistivity corresponds to heterogeneity within each layer. As we cannot collect samples for the characterization of materials, the geophysical interpretation results help to estimate the compositional structure of the dam; ultimately it helps in numerical modeling on the safety factor estimation.

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“…Consequently, several researchers decided to use other non-destructive methods modifying the frequency spectra (Sbartaï, Laurens, Rhazi, Balayssac, & Arliguie, 2007;, using mechanical means and combining several non-destructive testing Breysse, Klysz, Dérobert, Sirieix, & Lataste, 2008;Villain, Sbartaï, Dérobert, Garnier, & Balayssac, 2012), to decorrelate uncertainties in order to get quantitative data. However, many additional studies are still necessary before traditional destructive on site methods may be replaced by non destructive investigations (Lamarre, Saussol, & Chataigner, 2011a, 2011b, 2011cSaussol, Rabasse, & Aubagnac, 2012).…”

Section: Introductionmentioning

confidence: 99%

Temperature influence on electromagnetic measurements of concrete moisture

Chataigner¹,

Saussol²,

Dérobert³

et al. 2014

European Journal of Environmental and Civil Engineering

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In order that non-destructive testing methods become quantitative tools for structure owners, it is necessary to assess their precision and sensitivity to the environment. The presented study deals with two electromagnetic methods classically used to survey road pavements and concrete structures: a radar technique and a capacitive technique. The presented investigations aim at assessing the influence of temperature and moisture on the two methods for measurements realised on concrete slabs. The temperature was ranging from 5 to 45°C and the surrounding relative humidity (RH) evolved between 60 and 90%. The study is part of a more ambitious topic aiming at defining quantitative non-destructive methods to evaluate the water content of concrete structures on site and their state of degradation. The presented work allows assessing the sensitivity of both radar and capacitive techniques to the environmental conditions: temperature and RH. Moreover, the measurement variability of the used capacitive probes with three different sets of electrodes is estimated.

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Using radar direct wave for concrete condition assessment: Correlation with electrical resistivity

Cited by 69 publications

References 18 publications

Detecting Moisture Damage in Archaeology and Cultural Heritage: a Brief Introduction

Detecting Moisture Damage in Archaeology and Cultural Heritage: a Brief Introduction

Auscultation of a Dam for Mining Restoration in Quebec, Canada

Temperature influence on electromagnetic measurements of concrete moisture

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