Surf™ Concrete Surface Resistivity
Concrete Surface Resistivity
Surf™ is a laboratory test device for rapid, easy and accurate measurement of the surface electrical resistivity of concrete based on the four-probe (Wenner-Array) technique. The Surf™ patented technology automatically measures resistivity around the concrete specimen using four channels of 4-probe array (located at 90° from each other). The PC software generates the required reports according to the standard specifications.
Surf™ can be used to determine the chloride permeability of concrete in accordance with AASHTO TP95 and the upcoming ASTM standard. The measurement data can be used for durability-based quality control of concrete as well as the service life design of concrete structures.
Surf™ is a unique device for automatic 4-channel resistivity measurement suitable for investigating the micro-structural properties of concrete including:
- Durability-based quality control of concrete
- Diffusion of chloride in concrete
- Setting time of fresh concrete
- Crack detection in concrete
- Water content in fresh concrete
Features
- Patented technology
- The only device in the market fully compliant with both AASHTO T95 and the upcoming ASTM standard
- Easy to use (see demo on Youtube)
- Variable frequency (13 - 100 Hz)
- Wide resistivity range (0.1 - 1,000 kΩ.cm)
- Fast measurement (8 measurements < 15s)
- Four-channel four-probe measurement
- Limiting moisture loss
- Automatic report generation with PC software
- Fresh concrete testing/crack detection applications
- Continuous measurement mode
- USB connection to computer
