Journal ArticleDOI
Application of radar technology to reinforced concrete structures: a case study
TLDR
In this article, the authors present the operating methodologies and the results achieved by the application in the field of radar methodologies to map utilities, and for applications to civil building with special regard to the determination of the intern morphology, to the lack of homogeneity research and defectiveness and to the location of the steel reinforcements.Abstract:
The radar technology, used to perform investigations on the civil buildings, derives from that used for investigations of the ground known with the name of Georadar. This is diffusing rapidly among the investigation methodology not destructive in the field of the structural engineering. It is based on the sending of electromagnetic waves of very short length and the recording of the time of arrival and of the breadth of any signals reflected on the interface between materials with a different dielectric constant. The aim of this paper is to present the operating methodologies and the results achieved by the application in the field of radar methodologies to map utilities, and for applications to civil building with special regard to the determination of the intern morphology, to the lack of homogeneity research and defectiveness and to the determination of the location of the steel reinforcements. Specifically, the system used, made up of one apparatus of field acquisition and another of delayed processing, seems to be able to provide good planimetric and three-dimensional restitution with regard to location and placement. In this paper, special attention has been paid to the processing of the acquired data and on the interpretation of experimental tests conducted on a civil building.read more
Citations
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Journal ArticleDOI
A review of Ground Penetrating Radar application in civil engineering: A 30-year journey from Locating and Testing to Imaging and Diagnosis
TL;DR: This paper reviews the latest development of the GPR’s primary infrastructure applications, namely buildings, pavements, bridges, tunnel liners, geotechnical and buried utilities and outlines the path to a more rigorous development in terms of standardization, accreditation, and procurement policy.
Journal ArticleDOI
Nondestructive test methods for concrete bridges: A review
TL;DR: NDT methods applicable to concrete bridges are reviewed in this paper, where a flow chart based on damage level along with NDT methods and potential remedial measures are proposed for periodic health monitoring of structures.
Journal ArticleDOI
Review and comparison of shearography and active thermography for nondestructive evaluation
Y.Y. Hung,Y. S. Chen,S. P. Ng,Lei Liu,Y. H. Huang,B.L. Luk,R.W.L. Ip,Chi-Man Lawrence Wu,Po Sheun Chung +8 more
TL;DR: In this paper, a comprehensive review of shearography and active thermography and their applications in nondestructive evaluation of materials is presented, and a comparison of the advantages and limitations of two techniques for non-destructive evaluation is also presented.
Journal ArticleDOI
Application of GPR to the monitoring of river embankments
TL;DR: In this paper, ground penetrating radar (GPR) is applied to the monitoring of river levees for detecting animal burrows, which may trigger levee failures by piping failures.
Journal ArticleDOI
GPR evaluation of the damage found in the reinforced concrete base of a block of flats: A case study
TL;DR: In this article, the authors present the methodology and results of a study of the reinforced concrete base of a large block of flats, where flow water and flooding are common in the wet and dry seasons.
References
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Book
Surface-Penetrating Radar
TL;DR: The principles of the technique are reviewed, the technical requirements for the individual subsystems comprising a surface-penetrating radar are discussed and examples of typical applications for the method are provided.
Journal ArticleDOI
Review of NDT methods in the assessment of concrete and masonry structures
D. M. McCann,Michael Forde +1 more
TL;DR: In this paper, the state of the art of non-destructive testing (NDT) methods as applied to the civil engineering industry in the Millennium Year, 2000 is reviewed.
Journal ArticleDOI
Dielectric permittivity of concrete between 50 Mhz and 1 Ghz and GPR measurements for building materials evaluation
TL;DR: In this article, a new dielectric measurement device has been designed and constructed for permittivity measurement of concrete consisting of aggregates of up to 30 mm in diameter, which can be removed from the measurement cell and stored in controlled conditions.
Journal ArticleDOI
Sub-surface radar testing of concrete: a review
TL;DR: The background and current state of the art of radar testing of concrete is briefly reviewed in this paper, which encompasses developments of equipment, procedures, applications, analysis, interpretation and presentation of results.