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  • Articles and Case Studies from SewerVUE | Environmental XPRT

    Articles and Case Studies from SewerVUE`s ... the in-pipe application of ground penetrating radar ... Ground Penetrating Radar Evaluation of Concrete Tunnel Linings.

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  • Detection of Rockfall on a Tunnel Concrete Lining with Ground ...

    Abstract. Experiments were conducted using Ground-Penetrating Radar (GPR). The performance of six GPR systems was assessed in terms of: (1) remotely mapping cavities behind concrete linings, (2) detecting rockfall from the tunnel roof onto an inner lining comprising, for example, precast concrete segments.

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  • Ground Penetrating Radar Solution for Concrete Structures

    The ground penetrating radar is designed to help users locate rebar, voids, post-tension cables, cavities, conduits, and other objects buried in the concrete structure before cutting or drilling into it.

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  • Layer recognition and thickness evaluation of tunnel lining ...

    Layer recognition and thickness evaluation of tunnel lining based on ground penetrating radar ... The Long Hai Tunnel is a cast-in-situ reinforced concrete ...

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  • SewerVUE Technology - Multi-Sensor Inspection System

    Pipe penetrating radar is SewerVUE's proprietary ... always in the center of the concrete. ... merges CCTV data with ground penetrating radar ...

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  • Nondestructive testing for crack of tunnel lining using GPR ...

    Nondestructive testing for crack of tunnel lining ... crack detection in the tunnel lining, ground penetrating radar ... Evaluation of Concrete and ...

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  • NDT Assessment of Concrete Tunnel Lining | CTLGroup

    The concrete tunnel lining has 8 ft internal diameter and 14 in wall thickness. The upper portion of the lining is covered with formed #12 U.S. gage steel plates at the exterior face. Each steel plate is approximately 3 ft x 1-1/2 ft. A structural evaluation was needed to respond to reported water inflow from the tunnel into a nearby excavation site.

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  • Detection of Rockfall on a Tunnel Concrete Lining with Ground ...

    Detection of Rockfall on a Tunnel Concrete Lining with Ground-Penetrating ... cavities behind concrete linings, (2) ... along the tunnel. 3 Ground-Penetrating Radar ...

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  • Ground Penetrating Radar (GPR) for Rebar Mapping and ...

    Federal Highway Administration Research and Technology Nondestructive Evaluation ... and tunnel linings ... Decks Using Ground Penetrating Radar, ...

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  • Information - Ground Penetrating Radar Services, Scan Man ...

    Ground Penetrating Radar Services throughout Australia, ... Scan Man – Accelerating Your Ground Penetrating Radar Services: ... Tunnel Lining Assessment ;

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  • Assessing the Applicability of Ground-Penetrating Radar to ...

    Assessing the Applicability of Ground-Penetrating Radar to Quality Control in ... "Ground-penetrating radar evaluation of concrete tunnel linings ...

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  • Ground Penetrating Radar Applications - Dr Fixit Institute

    runways or behind tunnel linings. ... GPR is a great tool for concrete evaluation and ... 2.14 Railway Ballast Evaluation Ground Penetrating Radar is an excellent non ...

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  • Application of Ground Penetrating Radar to Civil and ...

    Application of Ground Penetrating Radar to Civil and ... steel reinforcing in concrete, ... runways or behind tunnel linings. 4.

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  • Concrete Tunnel Lining Evaluation Using Nondestructive ...

    An in-depth investigation of tunnel linings is performed at Eisenhower Tunnel, 60 miles west of Denver, Colorado, using a combination of four nondestructive testing methods: air- and ground-coupled ground penetrating radar (GPR), ultrasonic echo (US echo), ultrasonic tomography (UST), and impact ...

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  • Ground-Penetrating Radar Detection of the Defects in Tunnel ...

    The research believes that under appropriate working condition, as an important means to guarantee the construction security and maintain the tunnel health, ground penetrating radar technology can examine the lining quality fast and effectively, and meet the needs of the tunnel lining quality detection with suitable equipment, working method and data processing plan.

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  • Implementation Assistance Application for Nondestructive ...

    lining assessments. Ground-penetrating radar ... Download the Nondestructive Testing for Tunnel Linings ... concrete tunnel linings.

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  • GPR signal enhancement using band-pass and K--L filtering: a ...

    Evaluation of grout behind the lining of shield tunnels using ground-penetrating radar in the ... GPR signal analysis of post-tensioned prestressed concrete girder ...

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  • NDT of Thickness Measurement for Concrete | FPrimeC Solutions

    ... widely used nondestructive tests of thickness measurement for concrete ... of concrete lining (liner) in tunnels, ... and Ground Penetrating Radar ...

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  • Application of ground penetrating radar in grouting ...

    Application of ground penetrating radar in grouting ... of tunnel concrete lining by the ... of shield tunnels using ground-penetrating radar in the ...

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  • Ground Penetrating Radar - Concrete Scanning and Imaging

    Concrete Scanning with Ground Penetrating Radar With new build construction and renovation projects, the likelihood of needing to cut or core a concrete slab is high.

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  • Concrete Scanning Services - National GPR Service, Inc.

    Ground Penetrating Radar ... columns, beams, decks, encasements, pylons, balconies, bridges, tunnels ... Publication - Nondestructive Evaluation of Concrete ...

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  • Non-Destructive Evaluation Of Tunnels - Penetradar

    Non-Destructive Evaluation Of Tunnel Liners. Using Ground Penetrating Radar, ... evaluation of the tunnel lining are both ... concrete and debonded tiles. ...

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  • Thickness Evaluation and Rebar Recognition of Railway Tunnel ...

    In this paper, using ground penetrating radar (GPR), we propose a novel method to evaluate the thickness of second lining and the number of rebar for tunnel detection.

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  • Accurate thickness estimation of a backfill grouting layer ...

    Abstract: The distribution of a backfill grouting layer behind concrete lining of a shield tunnel is important for evaluation of its stability. In this paper, we proposed to use Common Mid-Point (CMP) method by Ground Penetrating Radar (GPR) to estimate the dielectric permittivity and thickness of the backfill grouting layer.

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  • Ground Penetrating Radar Solution for Concrete Structures

    The ground penetrating radar is designed to help users locate rebar, voids, post-tension cables, cavities, conduits, and other objects buried in the concrete structure before cutting or drilling into it.

    get price