Measurement of water content and salinity index in concrete by evanescent field dielectrometry

Bouichou, Myriam; Marie-Victoire, Elisabeth; Jourdan, Héloïse; Thauvin, Benoît; Queguiner, Ronan; Olmi, Roberto; Riminesi, Cristiano

doi:10.1016/j.culher.2018.07.003

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…Most of the sensors can deliver data at different depths allowing the gradual ingress of aggressive agents into the concrete to be followed. For the non-destructive testing, two types of techniques were considered: electrochemical tools [7] and evanescent field dielectrometry [8] [9]. Resistivity was measured with a four-point Wenner probe (Resipod ® ) [10] and with the disc method (Gecor10 ® ) [11], potential mapping was performed with a copper/copper sulphate electrode (Canin ® ) [12] and corrosion rate was evaluated using a Gecor10 ® [13] Only the first series of non-destructive electrochemical measurements on the eleven noninstrumented walls are presented in this paper.…”

Section: Experimental Program 21 Specimenmentioning

confidence: 99%

Concrete of tomorrow: corrosion performances in marine environment

Marie-Victoire,

Bouteiller,

Bouichou

et al. 2022

MATEC Web Conf.

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Concrete is the most used construction material worldwide, but if often faces durability issues due to rebar corrosion, and cement production can be energy consuming. Attempts to improve its resilience versus corrosion while reducing its carbon footprint are ongoing at an international level. In this objective, in France within the framework of the national project PERFDUB, a series of reinforced concrete walls were cast with innovative concrete designs, two shapes of rebars and two concrete covers. The standard performances of the different concrete mix designs were evaluated at a laboratory scale. Then the walls were exposed in the French La Rochelle harbor, in the tidal zone in order to monitor the evolution of the corrosion of the bars for a period of twenty years. The first results of the electrochemical follow-up of these reinforced walls are presented in this paper.

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Section: Experimental Program 21 Specimenmentioning

confidence: 99%

Concrete of tomorrow: corrosion performances in marine environment

Marie-Victoire,

Bouteiller,

Bouichou

et al. 2022

MATEC Web Conf.

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“…Techniques such as infrared thermography [ 4 , 5 , 6 , 7 ], high-frequency sensors [ 8 , 9 ], and evanescent field dielectrometry [ 10 ] have to be mentioned here. The latter has also been used for concrete [ 11 , 12 ]. Additionally, concrete and other construction materials, such as limestone, cement, clay, or other porous materials, were measured in the laboratory by gamma ray attenuation [ 13 , 14 , 15 ], X-ray radiography [ 16 , 17 , 18 ], neutron radiography [ 19 , 20 , 21 , 22 ], time-domain reflectometry [ 23 , 24 , 25 ], wireless inductive–capacitive sensors [ 26 , 27 ], optic fiber sensors [ 28 , 29 , 30 , 31 , 32 ], impedance tomography [ 33 , 34 ], and the capacitance method [ 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Humidity and Salt Detection in Historical Building Materials via Broadband Radar Measurement

Blaschke,

Brand,

Drese

2023

Sensors

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For the investigation of moisture and salt content in historic masonry, destructive drilling samples followed by a gravimetric investigation is still the preferred method. In order to prevent the destructive intrusion into the building substance and to enable a large-area measurement, a nondestructive and easy-to-use measuring principle is needed. Previous systems for moisture measurement usually fail due to a strong dependence on contained salts. In this work, a ground penetrating radar (GPR) system was used to determine the frequency-dependent complex permittivity in the range between 1 and 3 GHz on salt-loaded samples of historical building materials. By choosing this frequency range, it was possible to determine the moisture in the samples independently of the salt content. In addition, it was possible to make a quantitative statement about the salt level. The applied method demonstrates that with ground penetrating radar measurements in the frequency range selected here, a salt-independent moisture determination can be carried out.

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“…SI is a parameter introduced recently in the field of microwaves dielectric measurements [12]. By this methodology it is possible to assess the quantity of salts inside waterlogged wood microstructure which is the main deterioration cause [17].…”

Section: Introductionmentioning

confidence: 99%

Real-time detection of salts content in waterlogged archaeological wood by evanescent field dielectrometry (EFD): preliminary results

Longo¹,

Fazio

Pizzo³

et al. 2022

J. Phys.: Conf. Ser.

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Monitoring moisture content and detecting the presence of soluble salts in archaeological waterlogged wood remains is a key issue for their conservation. Evanescent field dielectrometry (EFD), originally applied to frescoes and mural painting investigation is proposed as a novel tool for the real-time detection of soluble salts inside waterlogged wood samples. Preliminary measurements on archaeological samples from Denmark were performed to provide the basis for on-site monitoring of the rinse process required before consolidation treatment.

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Measurement of water content and salinity index in concrete by evanescent field dielectrometry

Cited by 5 publications

References 7 publications

Concrete of tomorrow: corrosion performances in marine environment

Concrete of tomorrow: corrosion performances in marine environment

Quantification of Humidity and Salt Detection in Historical Building Materials via Broadband Radar Measurement

Real-time detection of salts content in waterlogged archaeological wood by evanescent field dielectrometry (EFD): preliminary results

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