CONCRETE SCANNING AND STRUCTURAL AUDITING - SiGeo Concrete
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CONCRETE SCANNING AND STRUCTURAL AUDITING

In accordance to ASTM D6432, ASTM D6431 – 99(2010),  ASTM D6087 – 08(2015) standards procedures, we utilise both high-frequency pulse radar (GPR) and Ultrasonic tomography technologies for high-resolution 2D/3D and section-view imaging of concrete structures (Slabs, foundations, beams, columns, walls etc.) Such multi-dimensional techniques (A-Scan, B-Scan, C-scan) aid structural condition assessment, including location and characterisation of defects, reinforcement /cover parameters, strength and durability evaluations.

Benefits

Safety and Structural Audits

 

  • Locate concrete installed services (power, gas, water, data)
  • Post-tension cable avoidance
  • Slab thickness and Cover parameters
  • Reinforcement geometry and spacing
  • Pre-coring scanning and slab sampling

Method

GPR systems work by sending a tiny pulse of energy into a material via an antenna. An integrated computer records the strength and time required for the return of any reflected signals. Subsurface variations will create reflections that are picked up by the system and stored on digital media. These reflections are produced by a variety of material such as geological structure differences and man-made objects like pipes and wire. (from GSSI).

Data Processing

Zero Shift Correction

Data Editing & Gain Adjustment

Diaelectric Adjustment

Hyperbola Matching

Filtering & Deconvolution

Migration

We provide survey design and data processing support for simple to complex Ground penetrating radar (GPR) and Ultrasonic tomography concrete and non-concrete structural assessments including report writing and peer-review interpretations to industry standards.