Using shallow geophysical methods to characterise the monumental building at the Segeda I site (Spain)

Fernández, Gloria; Teixidó, Teresa; Peña, José Antonio; Burillo, Francisco Rocadenbosch; Claros, J.

doi:10.1016/j.jasrep.2015.04.006

Cited by 5 publications

(5 citation statements)

References 8 publications

(5 reference statements)

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“…4). Fernández et al (2015) succeeded in imaging a historical foundation by utilizing Wenner-Schlumberger array. Although the study was conducted during the summer season (i.e.…”

Section: The Foundation Material Nature Of the Background And Moisture Contentmentioning

confidence: 99%

Electrical Resistivity Tomography Application for Buried Foundation Investigations: Insights and Review

Eissa

2021

IGJ

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Maintenance of existing structures and development or reuse of brownfield sites need to determine buried foundations, in terms of location and dimensions, as accurately as possible. Geophysical methods provide an indirect way to look in the ground and provide information about the subsurface that the traditional methods might be unable to. In particular, the electrical resistivity method has been performed in the context of buried foundation surveys. This review spots the light on the main results obtained from utilizing the electrical resistivity method and the most affecting parameters that can influence the obtained resistivity models, and also, focuses on published case studies to merge their findings to understand the interaction among the method, the foundation and the hosting background for buried foundations surveys. The case studies mentioned in this review show the resistivity method's success and highlight the most important parameters that can control the method’s applicability and data interpretation. The integration of the geophysical-traditional methods has appreciable potential for more accurate findings.

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“…4). Fernández et al (2015) succeeded in imaging a historical foundation by utilizing Wenner-Schlumberger array. Although the study was conducted during the summer season (i.e.…”

Section: The Foundation Material Nature Of the Background And Moisture Contentmentioning

confidence: 99%

Electrical Resistivity Tomography Application for Buried Foundation Investigations: Insights and Review

Eissa

2021

IGJ

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“…As mentioned, this technique is a useful and non-invasive method to diagnose subsoil problems in shallow foundations of buildings [3,[29][30][31][32], which represent 25% of the claims reported in Spain, according to recent data provided by Aseguradora Mutua de Arquitectos Superiores, a public limited company (ASEMAS S.A.). However, the three-dimensional geophysical research approach ERT 3D [33][34][35] is better able than the two-dimensional approach ERT 2D to characterize the subsurface and determine heterogeneity in measured rock properties along the vertical (Z) and orthogonal horizontal (X, Y) axes [36,37].Thus, the determination of the variation in the soil properties along the three orthogonal directions would allow the evaluation of the spatial variation in the strength of the foundations, imposed by the heterogeneous properties of the soil [38].…”

Section: Introductionmentioning

confidence: 99%

Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain

Gutiérrez-Martín

Yenes²,

Fernández

et al. 2021

Applied Sciences

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The paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D electrical resistivity tomography (ERT-3D and consolidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain). The chosen tomography model is the dipole–dipole configuration, with an optimized distance between electrodes of 0.80 m for a better visualization of the foundation subsoil; with this parameterization, a total of 72 electrodes were installed in the analyzed case. In this work, the depth of the anomaly in the building’s supporting subsoil was detected ranging from 2.00 m to 3.90 m deep. The study also delineates areas of high resistivity variations (50–1000 Ω m) in the middle and eastern end of the field. These data have been validated and corroborated with a field campaign. The results of the ERT-3D monitoring are presented, once the investment data has been processed with the RES3DINV software, from the beginning to the end of the stabilization intervention. The novelty occurs with the interaction between the tomography and the foundation consolidation injections, until the final stabilization. This is a very useful methodology in case of emergency consolidation, where there is a need to minimize damage to the building. Thus, people using this combined system will be able to practically solve the initial anomalies of the subsoil that caused the damages, in a non-invasive way, considerably lowering the value of the resistivities.

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“…Electrical resistivity imaging has, for decades, been very effective in illuminating the subsurface and apt at providing information about the soil's physical properties for economic, environmental, and geological engineering. As mentioned, this technique is a useful and noninvasive method to diagnose subsoil problems in shallow foundations of buildings [3,[29][30][31][32]; which represents 25% of the claims reported in Spain, according to recent data provided by Aseguradora Mutua de Arquitectos Superiores, a public limited company (ASE-MAS S.A.).However, the three-dimensional geophysical research approach (ETR-3D) [33][34][35] is better able than the two-dimensional approach (ETR-2D) to characterize the subsurface and determine heterogeneity in measured rock properties along the vertical (Z) and orthogonal horizontal (X, Y) axes [36,37].Thus, the determination of the variation in the soil properties along the three orthogonal directions would allow to evaluate the spatial variation in the strength of the foundations, imposed by the heterogeneous properties of the soil [38].…”

Section: Introductionmentioning

confidence: 99%

Stabilization methodology in foundation soils by ERT-3D. Application in Estepona, South Spain.

Gutiérrez-Martín¹,

Yenes²,

Fernández³

et al. 2021

Preprint

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The paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D Electrical resistivity tomography (ERT-3D) and conso- lidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain). The chosen tomography model is the dipole-dipole configuration, with an optimized distance between electrodes of 0.80 m for a better visualization of the foundation subsoil; with this parameterization, a total of 72 electrodes were installed in the analyzed case. In this work, the depth of the anomaly in the building's supporting subsoil was detected ranging from 2.00 m to 3.90 m deep. The study also delineates areas of high resistivity variations (50-1,000 Ω m) in the middle and eastern end of the field. These data have been validated and corroborated with a field campaign. The results of the ERT-3D monitoring are presented, once the investment data has been processed with the RES3DINV software, from the beginning to the end of the stabilization intervention. The novelty occurs with the interaction between the tomography and the foundation consolidation injections, until the final stabilization; very useful methodology in case of emergency consolidation, where there is a need to minimize damage to the building. Thus, people using this combined system; will be able to practically solve the initial anomalies of the subsoil that caused the damages, in a non-invasive way, considerably lowering the value of the resistivities.

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Using shallow geophysical methods to characterise the monumental building at the Segeda I site (Spain)

Cited by 5 publications

References 8 publications

Electrical Resistivity Tomography Application for Buried Foundation Investigations: Insights and Review

Electrical Resistivity Tomography Application for Buried Foundation Investigations: Insights and Review

Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain

Stabilization methodology in foundation soils by ERT-3D. Application in Estepona, South Spain.

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