FDTD modelling in high‐resolution 2D and 3D GPR surveys on a reinforced concrete column in a double wall of hollow bricks

Domenico, Dario De; Campo, Davide; Teramo, A.

doi:10.3997/1873-0604.2012047

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…Most of the publications reviewed were articles, with 87 publications (87.9%), followed by conference papers and book chapters with 10 (9.9%) and 2 (2.2%) publications, respectively, as shown in Figure 2. Regarding the number of publications per objective, an equal distribution has been found over the years, with 32% in Reinforced concrete column beyond a double wall of hollow bricks ✓ De Domenico et al [45] structural safety, with 35% in energy efficiency and user wellbeing, and with 33% in heritage preservation, respectively, as shown in Figure 3.…”

Section: Methodsmentioning

confidence: 98%

Review of InfraRed Thermography and Ground‐Penetrating Radar Applications for Building Assessment

Garrido

Solla

Lagüela

et al. 2022

Advances in Civil Engineering

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The first appearance of concern for the good condition of a building dates back to ancient times. In recent years, with the emergence of new inspection technologies and the growing concern about climate change and people’s health, the concern about the integrity of building structures has been extended to their analysis as insulating envelopes. In addition, the growing network of historic buildings gives this sector special attention. Therefore, this study presents a comprehensive review of the application of two of the most common and most successful Non-Destructive Techniques (NDTs) when inspecting a building: InfraRed Thermography (IRT) and Ground-Penetrating Radar (GPR). To the best knowledge of the authors, it is the first time that a joint compilation of the state-of-the-art of both IRT and GPR for building evaluation is performed in the same work, with special emphasis on applications that integrate both technologies. The authors briefly explain the performance of each NDT, along with the individual and collective advantages of their uses in the building sector. Subsequently, an in-depth analysis of the most relevant references is described, according to the building materials to be studied and the purpose to be achieved: structural safety, energy efficiency and well-being, and heritage preservation. Then, three different case studies are presented with the aim of illustrating the potential of the combined use of IRT and GPR in the evaluation of buildings for the purposes defined. Last, the final remarks and future lines are described on the application of these two interesting inspection technologies in the preservation and conservation of the building sector.

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Section: Methodsmentioning

confidence: 98%

Review of InfraRed Thermography and Ground‐Penetrating Radar Applications for Building Assessment

Garrido

Solla

Lagüela

et al. 2022

Advances in Civil Engineering

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“…In the last decade, several approaches (Porsani et al . ; Luodes ; Onur and Bakrac ; Arosio, Munda and Zanzi ; De Domenico, Campo and Teramo ; Arosio et al . ; Rey et al .…”

Section: Methodsmentioning

confidence: 99%

Characterization of the sedimentary fabrics in ornamental rocks by using GPR

Rey

Martínez

Montiel

et al. 2017

Near Surface Geophysics

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In this study, the use of ground-penetrating radar for characterising ornamental sedimentary rocks was tested. Specifically, the ability of this non-invasive geophysical prospecting method to identify fabrics and textures in rocks was investigated. Blocks mined from quarries were analysed, and ornamental rocks with the same lithologies as other widely utilised ornamental rocks with a variety of sedimentary fabrics and textures were selected. Rocks with clastic brechoid, cross-laminated sparitic, massive or layered micritic, and laminar bindstone textures were analysed. Antennas that provided the maximum detail and a sufficient depth of penetration were used. The low electrical conductivity of carbonates permitted the use of high-frequency antennas (800 MHz and 1.6 GHz), which were useful in studying the entire thickness of a boulder (up to 2 m).The cross-laminations in the oolitic limestones, the laminar bindstones of travertines, the differentiation between massive and brecciated fabrics, and the massive and slaty fabrics of the micritic limestones were examined using these two frequencies. In micritic textures without discontinuities (neither sedimentary nor diagenetic), the radargrams could detect facies with few reflections (Crema Marfil). In addition to analysing fabrics and textures, the ground-penetrating radar measurements could identify anisotropy in these rocks, which makes ground-penetrating radar an effective tool for evaluating the mechanical state of a boulder prior to its cutting. stratifications in dunes (Gómez-Ortiz et al. used GPR to detect fractures in carbonate quarries in Greece, Turkey, and Spain, respectively.However, few researchers have attempted to determine the lithology of a rock using GPR. Even fewer researchers have attempted to use GPR to characterise sedimentary textures. Sigurdsson and Overgaard (1998) studied limestone quarries to characterise textural variations between a bryozoan limestone and a coral limestone.In this study, we assess GPR as a non-invasive prospecting method for analysing carbonate rocks and identifying the presence of characteristic fabrics and sedimentary textures. Because of the importance of rocks as construction materials, this study focuses on the lithologies that are most common in ornamental rocks.

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“…Although some works where the FDTD method was successfully applied to GPR surveys are documented in literature (Solla et al . ; De Domenico, Campo and Teramo ; Angelis et al . ), no applications of the FDTD modelling of precast elements are currently reported.…”

Section: Introductionmentioning

confidence: 99%

Finite difference time domain modelling as support to ground penetrating radar surveys of precast concrete units

Campo¹

2019

Near Surface Geophysics

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Precast concrete elements are commonly employed in the construction industry, however failing to comply with manufacturers’ guidelines and poor construction practice can lead to loss of efficiency compromising the usability of the building. This paper presents two case studies where ground penetrating radar surveys, performed to investigate the cause of failure of precast concrete elements, were supported by the finite difference time domain numerical approach. In the first case, the model was built after the survey for a better understanding of the complex reflection patterns unexpectedly experienced and to provide a clear interpretation; in the second case, the numerical simulation was performed prior to the survey, according to the information already available on the precast unit. The synthetic radargrams were then used as a valuable reference to assess the precast element internal conditions: on site, the comparison of the real radargrams with the synthetic ones allowed to address safely the intrusive works necessary to determine the concrete quality and during the processing step, any deviation from the ideal ground penetrating radar response gave potentially an indication of anomalies in the assembly operations that could be identified. The finite difference time domain method should then be considered as complementary to ground penetrating radar surveys aimed to investigate precast elements.

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FDTD modelling in high‐resolution 2D and 3D GPR surveys on a reinforced concrete column in a double wall of hollow bricks

Cited by 12 publications

References 31 publications

Review of InfraRed Thermography and Ground‐Penetrating Radar Applications for Building Assessment

Review of InfraRed Thermography and Ground‐Penetrating Radar Applications for Building Assessment

Characterization of the sedimentary fabrics in ornamental rocks by using GPR

Finite difference time domain modelling as support to ground penetrating radar surveys of precast concrete units

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