Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Non-invasive defect detection for concrete structure using GPR
Concrete structure failures resulting from concrete defects cause many of the construction accidents. Factors that greatly affect structure performance and safety are the cracks and voids. Current techniques for concrete defects measurement are time-consuming, labor-intensive, require sampling with drills. Ground penetrating radar (GPR) is a non-destructive and non-invasive technology, which has been successfully used for imaging subsurface features and detecting the defects of concrete structure. In this study, the principle and method of GPR for concrete investigation were expounded. As two application examples, some filed measurements in order to detect the hidden defects were achieved in a new tunnel and an old chemical plant. All GPR investigations were made with the antennae of 1 GHz. The cracks and pores of concrete structure were located, and the distributing of reinforcing steel bars are inspected and estimated by GPR. The results of investigation show GPR is accurate and efficient to detect defects (e.g. cracks and pores) of concrete structures.
Non-invasive defect detection for concrete structure using GPR
Concrete structure failures resulting from concrete defects cause many of the construction accidents. Factors that greatly affect structure performance and safety are the cracks and voids. Current techniques for concrete defects measurement are time-consuming, labor-intensive, require sampling with drills. Ground penetrating radar (GPR) is a non-destructive and non-invasive technology, which has been successfully used for imaging subsurface features and detecting the defects of concrete structure. In this study, the principle and method of GPR for concrete investigation were expounded. As two application examples, some filed measurements in order to detect the hidden defects were achieved in a new tunnel and an old chemical plant. All GPR investigations were made with the antennae of 1 GHz. The cracks and pores of concrete structure were located, and the distributing of reinforcing steel bars are inspected and estimated by GPR. The results of investigation show GPR is accurate and efficient to detect defects (e.g. cracks and pores) of concrete structures.
Non-invasive defect detection for concrete structure using GPR
Nicht-invasive Fehlererkennung in Betonstrukturen mittels GPR-Radar
Liu, Dunwen (Autor:in) / Xu, Guoyuan (Autor:in) / Huang, Rendong (Autor:in) / Yan, Changbin (Autor:in) / Deng, Yu (Autor:in)
2004
7 Seiten, 9 Bilder, 1 Tabelle, 16 Quellen
Aufsatz (Konferenz)
Englisch
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