Laboratory device for measuring the surface electrical resistivity of concrete
- GIATEC - Surf
AASTHO T358
Rapid, Easy, & Accurate Measurements
Surf is a laboratory device for testing the surface electrical resistivity of concrete based on the four-probe (Wenner-Array) technique. These measurements are used to estimate the resistance of chloride penetration in the concrete. This shows the qualitative relationship between the rapid chloride penetrability test (RCPT) and the surface electrical resistivity of concrete. This surface resistivity meter can also be used for durability-based quality control of concrete and for monitoring the service life design of a structure.
Applications
- Performance-based quality control of concrete
- Estimation of chloride diffusion of concrete
- Service life design of concrete structures
- Crack detection in concrete
- Water content of fresh concrete
Four Measurement Channels
Automatically measure resistivity around the concrete specimen using four channels of 4-probe array, located at 90° from each other.
Fast & Accurate Data
As an alternative to the RCPT test, electrical resistivity evaluates the quality and durability of hardened concrete in minutes.
Automatic Report Generation
Easily export and share reports on concrete durability and service-life with project partners and stakeholders.
Hardware
- Optional hand-held probe
- Fast measurements (8 measurements < 15s)
- Four-channel four-probe surface resistivity meter
Software
- Accurate data (±2%)
- Variable frequency (13 – 100 Hz)
- Automatic report generation
- Free user-friendly PC software
| Single Measurement Time | 1.5 seconds |
| Testing Time | (8 measurements) |
| Measurement Channels | 4 |
| Frequency | 13 – 100 Hz |
Reading Range
| Reading Range | Frequency range | Accuracy |
| 0.1 – 100 KΩ.cm | 13 – 100 Hz | ± (0.1+1%) |
| 100 – 1000 KΩ.cm | 13 – 100 Hz | ± (1+1%) |
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