A Brief Guide on the Importance of Concrete Geometry Testing

Non-destructive testing is typically favoured over conventional destructive tests as it helps save money and time, especially when examining materials like concrete. Concrete geometry testing involves a range of equipment that can determine rebar location and cover foundation depths and slab thickness. The following is an overview of concrete geometry testing equipment and their importance for the job:
  • Foundation test gauge – The device is a compact shaft and pile inspection tool that uses sonic echo testing method, which is also known as ‘pile integrity test’ (PTI). Sonic echo investigations are conducted to determine the length and integrity of deep foundations. They may be conducted on a shallow wall structure, too, and on different materials such as steel, concrete, and wooden piles. The various applications of a foundation test gauge include week and uncured concrete in cast piles, determining the foundation depth, and assessment of the condition of foundations. It may be used to investigate bulbs and damage to foundations, as well as the inclusion of water or soil in cast piles.
  • Borehole probe cover meter – This meter detects reinforcing bars near a hole drilled in the concrete. The system consists of a handheld battery-power device with a diameter probe that measures 10mm. It can be used for measuring clearance from reinforcing bars for a hole where anodes for cathodic protection are placed after drilling. However, it may not be efficient in measuring the depth of the reinforcing steel or determining where the reinforcing bars are.
  • Devices for ultra-seismic investigations – Ultra-seismic investigations, as a form of concrete geometry testing, can determine and evaluate the length and integrity of deep and shallow piles or foundation elements. Hence, it is suitable for many different structures, including deep-drilled piles, shallow wall-shaped substructures, and when it is impossible to access the foundation element’s top surface. Structures can be analysed properly as long as the structure is exposed from one to 1.8m where the instrument can be mounted. Using ultra-seismic devices, you can conduct structural investigations, assess the foundation’s condition for geotechnical assessment, and investigate damage and bulbs in foundations.

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