Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Detection of Voids Underground and Under Pavements
Voids occurring under paved areas and beneath the ground surface at Naval and other Government installations lead to serious and costly problems. Available methods for detecting such voids nondestructively were evaluated so that timely repairs could be made and growth of the voids prevented. There is no one method capable of accurately locating and defining voids under all circumstances. However, either one or a combination of these three methods appear to be the most promising: (a) earth resistivity, (b) seismic techniques, and (c) subsurface radar. The effectiveness of these methods in detecting voids depends on soil properties, surface material properties (e.g., type of pavement), ground surface geometry, and accessibility with respect to the detecting equipment. Field investigations using the above three methods are recommended to provide quantitative evaluations of accuracy, reliability, and cost under various site conditions. Based upon the results of these field investigations, development of advanced acoustic holographic methods may be warranted. (Author)
Detection of Voids Underground and Under Pavements
Voids occurring under paved areas and beneath the ground surface at Naval and other Government installations lead to serious and costly problems. Available methods for detecting such voids nondestructively were evaluated so that timely repairs could be made and growth of the voids prevented. There is no one method capable of accurately locating and defining voids under all circumstances. However, either one or a combination of these three methods appear to be the most promising: (a) earth resistivity, (b) seismic techniques, and (c) subsurface radar. The effectiveness of these methods in detecting voids depends on soil properties, surface material properties (e.g., type of pavement), ground surface geometry, and accessibility with respect to the detecting equipment. Field investigations using the above three methods are recommended to provide quantitative evaluations of accuracy, reliability, and cost under various site conditions. Based upon the results of these field investigations, development of advanced acoustic holographic methods may be warranted. (Author)
Detection of Voids Underground and Under Pavements
M. C. Hironaka (Autor:in) / R. D. Hitchcock (Autor:in) / J. B. Forrest (Autor:in)
1976
42 pages
Report
Keine Angabe
Englisch
Highway Engineering , Detection & Countermeasures , Voids , Pavement bases , Foundations(Structures) , Cavities , Electrical resistivity , Seismic detection , Radar equipment , Nondestructive testing , Soils , Magnetic anomaly detection , Gravimetry , Multipath transmission , Void detectors , Subsurface radar
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