Search Results - "Villain, Geraldine"

Measurement methods of carbonation profiles in concrete: Thermogravimetry, chemical analysis and gammadensimetry by Villain, Géraldine, Thiery, Mickaël, Platret, Gérard

“…This paper deals with two experimental methods to determine carbonation profiles in concrete. Gammadensimetry is a non-destructive test method able to measure…”
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Effect of accelerated carbonation on electrical resistivity and microstructure of clinker-slag-limestone cement based concretes by Elkhaldi, Imane, Roziere, Emmanuel, Villain, Géraldine, Loukili, Ahmed

“…Low-clinker concretes offer potential for reducing CO 2 emissions of concrete and construction industries. However, it is important to consider the increased…”
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Surface calibration of electromagnetic properties to simultaneously consider water and chloride contents in concrete both with and without slag by El Achrafi, Mohamad Khodor, Villain, Géraldine, Bonnet, Stéphanie

“…In this work, novel calibration curves and calibration surfaces of Electromagnetic (EM) characteristics are modeled as a function of the water and chloride…”
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Electrical resistivity tomography results analyzed with two inversion methods to determine chloride profiles on BFS concrete having very high electrical resistivity by EL Achrafi, Mohamad Khodor, Bonnet, Stéphanie, Villain, Géraldine

“…•Assessing slag incorporation effect on durability indicators for mature concretes,•Determining chloride profile during diffusion campaign using Electrical…”
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Development of a multi-linear quadratic experimental design for the EM characterization of concretes in the radar frequency-band by Dérobert, Xavier, Villain, Géraldine

“…•This study focuses on EM characterization of 36 concretes using a specific design of experiment.•Concrete parameters are aggregates, cement and water to…”
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Effect of water and chloride contents and carbonation on the electromagnetic characterization of concretes on the GPR frequency band through designs of experiment by Dérobert, Xavier, Villain, Géraldine

“…Water content, chloride content and carbonation are three durability indicators that affect not only concrete properties and integrity, but also the ground…”
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Determination of concrete water content by coupling electromagnetic methods: Coaxial/cylindrical transition line with capacitive probes by Villain, Géraldine, Ihamouten, Amine, Dérobert, Xavier

“…This paper deals with the development and the validation of an innovative, easy-to-use and on site technique for determination of concrete water content. The…”
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Blind comparison of saturation ratio profiles on large RC structures by means of NDT and SFE—Application to the VeRCoRs mock-up by Gupta, Ritesh, Rossat, Donatien, Dérobert, Xavier, Baroth, Julien, Briffaut, Matthieu, Villain, Géraldine, Dufour, Frédéric

“…The prediction of large concrete structures behaviour such as bridges, dams and nuclear containment buildings (NCB) is a vital issue regarding the evaluation…”
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Linking Degree of Saturation With the Complex Dielectric Permittivity of Limestone in a GPR Frequency Band Using SVR by Guilbert, David, Guan, Borui, Ihamouten, Amine, Villain, Geraldine, Derobert, Xavier

“…This article focuses on the development and validation of an innovative method for estimating the degree of saturation (DOS) in limestone. A protocol is…”
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Accounting for steel rebar effect on resistivity profiles in view of reinforced concrete structure survey by Alhajj, Marie Antoinette, Palma-Lopes, Sérgio, Villain, Géraldine

“…•Reinforcement induces a significant decrease in the apparent resistivity values.•This effect is sensitive to the concrete cover and the inter-electrode…”
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Joint inversion of electromagnetic measurements for the determination of water saturation profiles in concrete structures by Alhajj, Marie Antoinette, Bourguignon, Sébastien, Palma-Lopes, Sérgio, Villain, Géraldine

“…Water saturation profiles in concrete are essential to assess its durability and can be determined using non-destructive techniques, especially the electric…”
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Determining chloride content profiles in concrete using an electrical resistivity tomography device by Fares, Milia, Villain, Géraldine, Bonnet, Stéphanie, Palma Lopes, Sérgio, Thauvin, Benoit, Thiery, Mickaël

“…Chloride penetration in concrete can lead to steel corrosion which is one of the major pathologies affecting reinforced concrete's durability. The development…”
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Acoustic techniques for concrete evaluation: Improvements, comparisons and consistency by Garnier, Vincent, Piwakowski, Bogdan, Abraham, Odile, Villain, Géraldine, Payan, Cédric, Chaix, Jean François

“…► Different linear and nonlinear acoustics techniques are tested to evaluate a set of concrete in a French project “Senso”. ► Each method is explained and the…”
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Non-destructive measurements for the evaluation of the air permeability of concrete structures by Multon, Stéphane, Verdier, Jérôme, Villain, Géraldine, Sogbossi, Hognon, Dérobert, Xavier, Cagnon, Hugo, Balayssac, Jean-Paul

“…•Measurement of permeability by permeameters, capacitive and resistive techniques.•Permittivity and resistivity predict permeability via saturation degree…”
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Design and validation of a multi-electrode embedded sensor to monitor resistivity profiles over depth in concrete by Badr, Joanna, Fargier, Yannick, Palma-Lopes, Sérgio, Deby, Fabrice, Balayssac, Jean-Paul, Delepine-Lesoille, Sylvie, Cottineau, Louis-Marie, Villain, Géraldine

“…•Design of an embedded sensor to monitor concrete resistivity profiles.•The designed solution is a multi-electrode printed circuit board (PCB)…”
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Optimized retrieval of 1D-resistivity profiles in cover concrete by electrical sounding measurements by Fargier, Yannick, Villain, Géraldine, Lopes, Sérgio Palma, Fares, Milia

“…Geophysical techniques offer assessing conditions of reinforced concrete structures without invasiveness issues. Electrical Resistivity methods are promising…”
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Determining the permittivity profile inside reinforced concrete using capacitive probes by Fares, Milia, Fargier, Yannick, Villain, Géraldine, Derobert, Xavier, Lopes, Sergio Palma

“…Non-destructive techniques are the future of structure health assessment and monitoring. The dielectric permittivity is sensitive to the water and ionic…”
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Monitoring water transfers in limestone building materials with water retention curve and Ground Penetrating Radar: A comparative study by Xiao, Xiaoting, Guan, Borui, Ihamouten, Amine, Villain, Géraldine, Dérobert, Xavier, Tian, Guiyun

“…The rehabilitation of older buildings is necessary to achieve both a reduction in energy consumption and the preservation of cultural heritage. To ensure a…”
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Durability diagnosis of a concrete structure in a tidal zone by combining NDT methods: Laboratory tests and case study by Villain, Géraldine, Sbartaï, Zoubir Mehdi, Dérobert, Xavier, Garnier, Vincent, Balayssac, Jean-Paul

“…► GPR, capacitive and impact echo techniques characterize slabs of six concrete mixes. ► Non-destructive results are correlated with porosity, water and…”
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Development of an ultrasonic experimental device to characterise concrete for structural repair by Benmeddour, Farouk, Villain, Géraldine, Abraham, Odile, Choinska, Marta

“…► An ultrasonic device based on both bulk waves in transmission mode is developed. ► The purpose of the work is the characterisation of concrete cores. ►…”
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