scholarly journals Rapid Detection Methods for Asphalt Pavement Thicknesses and Defects by a Vehicle-Mounted Ground Penetrating Radar (GPR) System

Sensors ◽  
2016 ◽  
Vol 16 (12) ◽  
pp. 2067 ◽  
Author(s):  
Zehua Dong ◽  
Shengbo Ye ◽  
Yunze Gao ◽  
Guangyou Fang ◽  
Xiaojuan Zhang ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Rapid Detection ◽  
Asphalt Pavement ◽  
Detection Methods ◽  
Ground Penetrating

The Application of Ground Penetrating Radar in Railway Tunnel Concrete Quality Detection

2011 ◽  
Vol 228-229 ◽  
pp. 1185-1189
Author(s):  
Su Qi ◽  
Xing Xing Chen
Keyword(s):  
Ground Penetrating Radar ◽  
Traditional Method ◽  
Detection Methods ◽  
Railway Tunnel ◽  
Testing Method ◽  
Quality Detection ◽  
Quality Testing ◽  
Concrete Quality ◽  
Ground Penetrating ◽  
Drilling Core

The priority of traditional tunnel concrete quality testing method is drilling core .The traditional method damage tunnel structure and detection speed is slowly.we use this method cann’t effectively meet the demand of rapid growth of tunnel concrete qulity testing. So the more fast and effective detection methods are needed.A new fast and effective kind of concrete quality detection methods is ground penetrating radar can meet the extensive tunnel concrete nondestructive testing. This paper introduces the basic principle of ground penetrating radar.I illustrate the application of railway tunnel testing by the testing in Ju Gan runnel of Lan Yue railway.TI is significance for railway tunnel concrete in future.

scholarly journals 3-D radar imaging unlocks the untapped behavioral and biomechanical archive of Pleistocene ghost tracks

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Thomas M. Urban ◽  
Matthew R. Bennett ◽  
David Bustos ◽  
Sturt W. Manning ◽  
Sally C. Reynolds ◽  
...  
Keyword(s):  
Recent Work ◽  
Ground Penetrating Radar ◽  
Plantar Pressure ◽  
Rapid Detection ◽  
Radar Imaging ◽  
Present Evidence ◽  
Faunal Diversity ◽  
Future Potential ◽  
Ground Penetrating ◽  
Land Vertebrates

Abstract Footprint evidence of human-megafauna interactions remains extremely rare in the archaeological and palaeontological records. Recent work suggests ancient playa environments may hold such evidence, though the prints may not be visible. These so-called “ghost tracks” comprise a rich archive of biomechanical and behavioral data that remains mostly unexplored. Here we present evidence for the successful detection and 3-D imaging of such footprints via ground-penetrating radar (GPR), including co-associated mammoth and human prints. Using GPR we have found that track density and faunal diversity may be much greater than realized by the unaided human eye. Our data further suggests that detectable subsurface consolidation below mammoth tracks correlates with typical plantar pressure patterns from extant elephants. This opens future potential for more sophisticated biomechanical studies on the footprints of other extinct land vertebrates. Our approach allows rapid detection and documentation of footprints while enhancing the data available from these fossil archives.

scholarly journals Innovative Approach for Asphalt Pavement Compaction Monitoring with Ground-Penetrating Radar

2013 ◽  
Vol 2347 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Pengcheng Shangguan ◽  
Imad L. Al-Qadi ◽  
Zhen Leng ◽  
Robert L. Schmitt ◽  
Ahmed Faheem
Keyword(s):  
Ground Penetrating Radar ◽  
Asphalt Pavement ◽  
Innovative Approach ◽  
Ground Penetrating ◽  
Compaction Monitoring

scholarly journals AN EXAMPLE OF COMPLIANCE VERIFICATION OF PAVEMENT PROJECT SPECIFICATIONS BY MEANS OF GEOPHYSICS

2018 ◽  
Vol 36 (1) ◽  
pp. 33
Author(s):  
Carolina Narjara Mazzini Amaral ◽  
Lúcia Maria da Costa e Silva
Keyword(s):  
Layer Thickness ◽  
Ground Penetrating Radar ◽  
Asphalt Pavement ◽  
Construction Project ◽  
Geophysical Method ◽  
Compliance Verification ◽  
Pavement Layers ◽  
Paved Road ◽  
Ground Penetrating ◽  
Non Destructive

ABSTRACT. The most important information about asphalt pavement is layer thickness. This information indicates whether or not the project specifications were met, and can also direct future recovery plans. Verifying these data relies on destructive techniques, such as boreholes, which may be expensive or even render verification unfeasible. Using the electromagnetic geophysical method known as ground penetrating radar (GPR), it is possible to verify compliance with pavement project specifications in an efficient and non-destructive way. We present an example of the use of GPR for this purpose obtained on a paved road at the campus of the Universidade Federal do Pará (UFPA), in Brazil. The GPR survey enabled individual pavement layers be identified. The comparison of the thickness of these layers, and those found in a borehole drilled during the GPR survey, with the thickness specified by the construction project plans, showed significant discrepancies. Keywords: ground penetrating radar, GPR, asphalt layer thickness. RESUMO. As informações mais importantes sobre o pavimento asfáltico são a espessura de suas camadas. Estas quantidades indicam se as especificações do projeto foram atendidas e podem também direcionar planos futuros de recuperação. A verificação desses dados depende de técnicas destrutivas, tais como perfurações, que podem encarecê-la ou até torná-la inviável. Com o método geofísico GPR é possível verificar o cumprimento das especificações de projeto de pavimentação asfáltica de maneira eficiente e não destrutiva. Apresentamos um exemplo obtido em uma estrada pavimentada no campus da Universidade Federal do Pará (UFPA, Brasil) que permitiu a identificação das camadas do pavimento com o GPR. A comparação dessas espessuras e daquelas obtidas por meio de um furo perfurado durante o levantamento GPR com as espessuras especificadas pelo projeto de construção mostram discrepâncias significativas. Palavras-chave: radar de penetração do solo, GPR, espessura de pavimentação asfáltica.

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