GeoScan Subsurface Surveys
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Mapping voids within concrete - Pulp Mill  
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A Pulp Mill was concerned with the structural integrity of one of their bleach reactors. The Silo’s funnel is made of concrete and lined with a tile to protect the concrete from the alkaline bleach.

The busy pulp mill shuts down for maintenance for just three weeks every year, during this time they wanted to investigate whether there was any voiding in the concrete funnel as a result of the bleach.

GeoScan performed a survey across four sections of the inside of the reactor, using an Ultrasonic Pulse Echo and High frequency bespoke Ground Penetrating Radar.
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With the results GeoScan were able to non-destructively and accurately map areas of suspected voiding in the reactor walls.
With such a small time frame each year, this kind of preventative investigation is crucial in order keep the busy pulp mill active. 
Concrete Ultrasound Voids
Concrete Ultrasound was utilized to confirm the presence of voids
3D Scan voids concrete
A 3D Scan was performed to help visualize the results
Picture
Identified Voids were mapped on the wall (yellow)
GeoScan Subsurface Surveys Inc
Tel: (+1) 604.436.7226 (Vancouver, BC)
Tel: (+1) 250.891.9364  (Victoria, BC)
Tel: (+1) 647.699.8144   (Toronto, ON)
Email: info@geoscan.ca
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  • Home
  • About Us
    • News
    • Blog
    • Publications
    • Our Locations >
      • Vancouver, BC
      • Toronto, ON
      • Victoria & Vancouver Island
    • Our Team
    • Careers
  • Services
    • Infrastructure, Engineering & Concrete NDT >
      • Xradar Concrete Scanning
      • Concrete Structural Surveys
      • Concrete Coring
      • Asphalt & Pavement Thickness Mapping
      • Void Detection in Concrete
      • Concrete Corrosion Mapping
    • Underground Utilities >
      • Utility Locating
      • Subsurface Utility Engineering
      • Oil Tank Locating
    • Environmental, Geotechnical & Archaeological >
      • Subsurface Void Locating
      • Bedrock and Water Table Profiling
      • Landfill Delineation & Contaminant Plume Mapping
      • River and Lake Profiling - Bathymetry
      • Archaeological Geophysics
  • Methods
    • Ground Penetrating Radar (GPR)
    • Xradar Concrete Imaging
    • Electromagnetic Conductivity
    • Electrical Resistance
    • Electromagnetic Locating
    • Magnetometry
    • Ultrasonic Pulse Echo
  • Project Examples
    • Infrastructure, Engineering & Concrete NDT Project Examples
    • Utility Locating & Oil Tank Project Examples
    • Environmental, Geotechnical & Archaeological Project Examples
  • Contact Us