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Application of radar techniques to the verification of design plans and the det...
Cruz, Paulo J. S.; Topczewski, Lukasz; Trela, C.; Fernandes, Francisco M.; Lourenço, Paulo B.Non-destructive tests (NDT) are an essential tool used in special inspections to gather detailed information about the condition of a bridge. The inspection of bridge decks is a critical task, and, currently, can be successfully carried out using a wide range of NDT techniques. Nevertheless, some of these techniques are excessively expensive and time consuming. One of these techniques, the ground penetrating ra...
Improvement and application of ground penetrating radar non-destructive techniq...
Topczewski, LukaszTese de doutoramento em Engenharia Civil - Área de Conhecimento de Estruturas. ; In the last decades the number of bridges increased considerably due to the significant expansion of the roadway and railway networks. Nowadays some of those structures evidence a varied range of defects. To ensure the continuous safety and functionality of those bridges, condition and safety assessments, followed by adequate main...
Practical implications of GPR investigation using 3D data reconstruction and tr...
Topczewski, Lukasz; Fernandes, Francisco M.; Cruz, Paulo J. S.; Lourenço, Paulo B.Non-destructive investigation using ground penetrating radar is becoming more popular in the inspection of civil structures. Currently, traditional 2D imaging is used as a preliminary tool to fi nd possible areas of interest for more detailed inspection, which can be accomplished by more advanced techniques like 3D image reconstruction or tomography. In this paper, a general overview of the work done at Univers...
Utilização do radar de prospecção geotécnica na localização das bainhas de pré-...
Cruz, Paulo J. S.; Topczewski, Lukasz; Fernandes, Francisco M.; Lourenço, Paulo B.Algumas pontes de betão armado, em serviço há mais de 30 anos, apresentam, actualmente, elevados índices de deterioração, que têm levado as entidades a proceder à sua beneficiação e reforço estrutural. Neste artigo, o georadar é utilizado para localizar elementos estruturais fundamentais à segurança de duas pontes de betão armado, que doutra maneira, poderiam ser danificadas e, assim, por em causa a segurança d...
Verifying design plans and detecting deficiencies in concrete bridge using GPR
Topczewski, Lukasz; Fernandes, Francisco M.; Cruz, Paulo J. S.; Lourenço, Paulo B.During the construction of concrete structures such as bridges, many deficiencies may occur due to an incorrect application or changes in the original design plans and construction errors. Frequently, areas with very poorly vibrated concrete, insufficiently grouted tendon ducts and incorrectly positioned reinforcement bars appear. Thus, the detection of these construction deficiencies is essential to prevent fu...
Radar investigation on civil structures using 3D data reconstruction and transm...
Topczewski, Lukasz; Fernandes, Francisco M.; Cruz, Paulo J. S.; Lourenço, Paulo B.; Ramos, Luís F.Non-destructive investigation using Ground Penetrating Radar is becoming more popular during the inspection of civil structures. Currently, traditional 2D imaging is also used as a preliminary tool to find possible areas of interest for more detailed inspection, which can be accomplished by 3D image reconstruction or tomography techniques. In this paper, a general overview of the work done at University of Minh...
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