Bridge Structure Deterioration & Integrity Assessment | Geophysics HM Ltd Bridge Structure Deterioration & Integrity Assessment | Geophysics HM Ltd

Geophysics HM Ltd

  • Home
  • Industry
  • Applications
  • Services
  • Technology
  • Contact Us
  • Mission Statement
  • Portfolio
  • Contacts
  • Technical Team
  • Archeological
  • Bridge Inspection
  • Construction
  • Due Diligence
  • Geology
  • Environmental
  • Forensics
  • Geotechnical
  • Hydrogeological
  • Mineral Exploration
  • Road Structure
  • Utility Mapping
  • Sector Applications
  • Survey Design
  • Data Acquisition
  • Data Processing
  • Interpretation
  • Reports and Maps
  • DELTA Bridge Scanner
  • EPSILON Road Profiler
  • POISSON Time Series
  • GPR
  • Utility Locates
  • Metal Detector
  • Conductivity Mapper
  • MASW
  • Seismics
  • Induced Polarization
  • Borehole Logging
  • Geophysical Methods
  • VIC Program
  • Home
    • Mission Statement
    • Portfolio
    • Contacts
    • Technical Team
  • Industry
    • Archeological
    • Bridge Inspection
    • Construction
    • Due Diligence
    • Geology
    • Environmental
    • Forensics
    • Geotechnical
    • Hydrogeological
    • Mineral Exploration
    • Road Structure
    • Utility Mapping
    • Sector Applications
  • Applications
  • Services
    • Survey Design
    • Data Acquisition
    • Data Processing
    • Interpretation
    • Reports and Maps
  • Technology
    • DELTA Bridge Scanner
    • EPSILON Road Profiler
    • POISSON Time Series
    • GPR
    • Utility Locates
    • Metal Detector
    • Conductivity Mapper
    • MASW
    • Seismics
    • Induced Polarization
    • Borehole Logging
    • Geophysical Methods
  • Contact Us
    • VIC Program
 

BRIDGE NDT & INSPECTION

Phone: (365) 889 5400

 Contact: sales@geophysicshm.com

Translate This Page

Geophysics HM Ltd offers Ground Penetrating Radar imaging and Thermal Imagery techniques for bridge integrity assessment that are high efficiency and affordable NDT alternative options to chain dragging and visual inspections on the structure decks since they are reliable, precise, high speed and traffic independent.

Bridge structure aging and concrete deck  degradation lead to inevitable rehabilitation and large maintenance activities causing complex traffic obstructions and severe economic loses to the government, tax payers and private parties that own the assets. In Canada and USA the bridges are inspected at least once every two years using conventional techniques such as visual inspections and chain dragging which are at large expensive, risky and time-consuming since they need personnel on-foot access to the traffic lanes and road closures in most of the cases.

Deck  Rehabilitation

Internal Components

Geophysical Survey for Bridge Deck Deterioration Assessment

The damage in the bridge concrete structure is largely related to delamination and spalling caused by corrosion of the reinforcement. Car mounted “State of the Art” geophysical NDT methods are efficiently used to image the internal structure of the concrete structure and building components, including deficiencies, delamination and spalling in bridge deck, supporting structures, retaining walls, beams, piers, columns and approaches.  High resolution GPR scanning can be effectively deployed over the surface of the concrete bridge components to provide information on the internal conditions of the concrete structure and components layout not provided from visual observations. The integration of the GPR, thermal imagery and other nondestructive techniques are necessary to complete a sound and full bridge condition assessment and rehabilitation.

Geophysical Methods Used For Bridge Inspection
 

"DELTA" Scanner

"EPSILON" Road Profiler

GPR 

Structure Scan 

Thermal Imagery

PDP

 
Applications and Solutions
  • Deck Deterioration 
  • Structural Integrity 
  • Components Condition 
  • Ducts Distribution & Depth
  • Cracking
  • Delamination
  • Slab Thickness
  • Concrete Density Changes 
  • Internal Structure Image 
  • Posttension Cable Image
  • Reinforcement Cover Thickness 
  • Reinforcement Layout
  • Retaining Walls Deterioration
  • Spalling
  • Voids Imaging
  • Asphalt Thickness

Structure Internal Image 

High resolution image of the location, depth and orientation of steel reinforcement and other imbedded structural elements is accurately obtained with the use of high frequency GPR. Geophysical techniques are useful for mapping and estimating the number of reinforcement bars in the structure. 

Reinforcement Distribution and Rebar Cover Depth

Imaging the position and relationship between the internal elements of thee concrete structure are very important aspects to consider during the design of the concrete structure. The inadequate selection and wrong placement of reinforcement will significantly affect the strength, stability and durability of the concrete structure.

Cracking, Spalling and Delamination Imaging

Ground Penetrating Radar and Thermal Imagery are used for detecting and estimating the position, size, geometry and extent of structural cracking, spalling and delamination.

Deck Deterioration Analysis

Ground Penetrating Radar carried over concrete structures with embedded corroded steel bars will show very distinctive diffraction  responses and high signal attenuation due to cracking, delamination and change of the concrete properties due to the presence of chemical sub-products of the corrosion process. The attenuation of the GPR signal generated  from the steel bar is used for estimating the degree of deterioration of the concrete structure and bridge decks.

Contact Us

Geophysics HM Ltd

Geophysics HM Ltd
Tweet
Your browser does not support HTML video.

DELTA Bridge NDT by Hernandez Vazquez, I (2021/2).

sales@geophysicshm.com

info@geophysicshm.com

ghm@geophysicshm.com

emartinez@geophysicshm.com

Geophysics HM Ltd Office

51 Strachan Street E.  Hamilton.  Ontario. L8L3M3

Phone: (365) 889 5400

Home

Services

Applications

Technology

Contact Us

Geo Store