SmartBox™ | Wireless Concrete Resistivity

Giatec SmartBox™ is a compact wireless device for the measurement and monitoring of electrical resistance and temperature in fresh concrete. The continuous measurements are recorded on SmartBox™ and can be downloaded using the mobile application on Android smartphone/tablet.

The electrical resistivity of fresh concrete has been shown to provide a good indication on the water content as well as setting and hardening of concrete. SmartBox™ provides an efficient tool for various research studies in these areas.

SmartBox™ can be used to monitor the electrical resistivity and temperature of fresh concrete. This can provide information on:

  • Water content in fresh concrete
  • Prediction of setting
  • Setting time measurement
  • Crack detection in concrete

Features

  • Wireless technology
  • Compact design
  • Simultaneous measurement of electrical resistance and temperature
  • Optimized frequency for fresh concrete
  • Long battery life on a single charge(about 3 months*)
  • Mobile application for Android smartphone and tablet
  • Easy data sharing
  • Patent pending

General

Reading RangeMeasurement FrequencyAccuracyMeasurement Time
1 – 3000 Ω10 kHz± 2%<1 second

 

Operating Conditions

TypeValue
Operating temperature-20 ~ 45 °C
Operating humidity10 ~ 90%
Battery Charger SpecificationInput:100-240Vac (50-60Hz)/Output:5Vdc(500mA)
Dimensions of SmartBox™ unit85 x 55 x 22 mm

This method of resistivity measurement is not standardized and is suitable for various research applications. However, AASHTO TP 95-11 provides the test standard for surface electrical resistivity measurement. An ASTM standard is also under development for this test. A copy of the AASHTO test specification entitled “Standard Method of Test for Surface Resistivity Indication of Concrete’s Ability to Resist Chloride Ion Penetration” can be obtained from here.

Giatec iCor™ | Wireless NDT Corrosion Detection

A non-destructive testing tool for detailed corrosion evaluation of reinforced concrete structures without the need to have an electrical connection to the rebar.

High Precision Sensors detect:

  • Corrosion rate mapping of rebar
  • Corrosion potential mapping of rebar
  • In-situ real electrical resistivity of concrete
  • Ambient temperature and relative humidity

 

ICOR® is a unique NDT device for the condition assessment of reinforced concrete structures that can be used for:

  • Detection of corrosion in the reinforcement
  • Measurement of corrosion rate in concrete structures
  • Measurement of real in-situ electrical resistivity of concrete
  • Determination of corrosion potential of rebar in concrete
  • Rehabiliation and repair of concrete structures

Giatec iCOR® benefits from the patented CEPRA technology that makes it possible to estimate the corrosion rate of rebar through a non-invasive approach. This means that the need for connecting the device to the rebar (which is the case for other commercial devices) is eliminated in iCOR®.

This makes iCOR® the most convenient corrosion rate measurement device in the field as well as offering an innovative research tool for laboratory studies.

Testing Time
5 to 15 seconds
6 measurements

Operating Temperature
0 ~ 45 °C (32 ~ 113 °F)

Operating Humidity
20 ~ 90%

Storage Temperature
0 ~ 70 °C

Storage Humidity
5 ~ 90%

Operating Voltage/Current
24 v

Dimensions
250 x 70 mm

XCell™ | Half-Cell Corrosion Mapping

Giatec XCell™ is a smart tablet-based NDT probe for fast, accurate and efficient detection and on-site analysis of corrosion in reinforced concrete structures. Giatec XCell™ meets all the requirements of the ASTM C876 standard specification.

Giatec XCell™ benefits from an advanced Wireless-enabled maintenance-free sensor that measures the corrosion potential and sends it wirelessly to a tablet for generating half-cell contour plots (i.e. corrosion maps) in real-time. The results can be shared easily with the engineering office. Giatec XCell™ significantly reduces the labor cost associated with the data collection and subsequent contour plot generation and reporting.

Giatec XCell™ can be used for efficient and accurate corrosion mapping according to the ASTM C876, “Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete”. The results are analyzed using the Android-based application onsite for the identification of locations with high probability of corrosion.

  • Single-person operation device
  • Maintenance-free electrode
  • Tablet/Smart-phone operation device
  • Upside down operation capability
  • Easy grid generation (on Tablet or Smartphone)
  • Fast data assignment to grid points
  • Real-time contour plotting
  • Automated temperature correction
  • Easy data sharing
  • Wireless V4.0 LE technology

General

TypeValue
Voltage Measurement Range± 1,000 mV
Measurement Resolution0.1 mV
Sampling Rate1 s
Input Impedance>10 M ohm
Temperature Measurement Range-10 ~ 50 °C
Temperature Measurement Accuracy0.5 °C
Communication ProtocolWireless V4.0 LE
Probe Weight250 gr



Operating conditions

TypeValue
Operating temperature0 ~ 45 °C
Operating humidity20 ~ 90%
Storage temperature-20 ~ 70°C
Storage humidity10 ~ 90%
Dimensions of XCell™ Probe32 mm x 260 mm (D x L)
  • ASTM C876 Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete.
  • RILEM TC 154
  • UNI 10174
  • DGZfP B3
  • SIA 2006
  • BS 1881, Part 201

Perma2™ | Rapid Chloride Permeability

Giatec Perma2™ is a completely re-engineered laboratory test device for the measurement of the electrical resistance of concrete against the penetration of chloride (RCPT) according to the standard methods such as ASTM C1202, AASHTO T277 and ASTM C1760. The measurement data can be used to estimate the chloride diffusion coefficient of concrete for the service life prediction and design of concrete structures as well as the durability-based quality control of concrete.

Perma2™ is electrically certified for test in concrete laboratories and its measuring cell sizes are according to the ASTM and AASHTO specifications. Equipped with a verification kit, Perma2™ is an accurate test device for concrete labs.

 

In concrete materials, the DC electrical resistance of concrete is correlated with important durability parameters of concrete such as chloride diffusion coefficient and the chloride migration coefficient that are used for the durability design or service life design of concrete structures.

Perma2™ is a laboratory device for testing the durability of concrete exposed chloride-contaminated environment including:

  • Concrete’s ability to resist chloride ion penetration (ASTM C1202, AASHTO T277)
  • Bulk electrical conductivity of concrete (ASTM C1760)
  • Performance-based quality control of concrete
  • Estimation of chloride diffusion coefficient of concrete
  • Estimation of chloride migration coefficient of concrete
  • Stand alone operation
  • Easy-to-assemble
  • Accurate (±0.1 mA)
  • Auto-seal cells with rubber gasket and spacer (i.e. does not require caulking)
  • Flexible logging interval time (1 to 10 min)
  • Automatic temperature control system
  • Four measurement channels
  • User-friendly PC software (optional)
  • Customizable setup
  • USB connection to computer (optional)
  • Verification kit accessory (optional)

General

TypeValue
Applied Voltage60 ± 0.1 V
Range of current measurement0 ~ 500 mA ± 0.1 mA
Temperature measurement range0 ~ 100°C
Measurement channels4
Short circuit protection systemYes
Measurement display on LCDYes
Remaining time display on LCDYes
LCD display area65×33 mm
Dimensions of Perma2™ Device280x240x104 mm
Weight2 Kg



Operating conditions

TypeValue
Operating temperature15 ~ 45 °C
Operating humidity30 ~ 80%
Storage temperature0 ~ 70°C
Operating voltage/current100 ~ 240 V, 50-60Hz

RCON2™ | Concrete Bulk Resistivity

Giatec RCON2™ is a non-destructive device for measuring the electrical resistivity of concrete specimens in the laboratory without any additional sample preparation requirements. This measurement can easily be made on the same concrete samples that are currently used for the compressive strength testing of concrete.
 
RCON2™ is fast (measurement time is less than 5 seconds), accurate (utilizing variable frequency method) and flexible (the measurement can be taken with different settings for verification). RCON2™ also allows for continuous measurement of electrical resistivity over time, which can be used to monitor several other parameters such as cracking, moisture transfer and time of setting in concrete specimens.

 

In concrete materials, the electrical resistivity is correlated well with important durability parameters such as permeability, diffusivity and in general the micro-structure characteristics of concrete.

RCON2™ is a unique device for investigating the micro-structural properties of concrete including:

  • Diffusion of chloride in concrete
  • Rebar corrosion in concrete
  • Setting time of fresh concrete
  • Moisture transfer in concrete
  • Curing of concrete
  • Cathodic protection design
  • Fast (<5 Second)
  • Accurate (±2%)
  • AC measurement (Galvanostatic)
  • Wide range of measurement frequencies (1Hz to 30kHz)
  • Phase detection (0-180 degree)
  • Stand alone operation
  • Continuous measurement
  • User-friendly PC software
  • Flexible sample holders
  • Customizable setup
  • USB connection to computer

More Information

Giatec RCON2™ provides a reliable method that utilizes electrical resistivity measurement for the quality control of concrete based on the required durability performance. This measurement can easily be made on the same concrete samples that are currently used for the compressive strength testing of concrete. RCON2™ employs an AC impedance technique for the accurate and fast readings that can be continuously obtained using its customizable and user-friendly operating software for various concrete materials.

The electrical resistivity of concrete can simply be related to their pore network characteristics such as pore size and their connectivity, moisture content in the pores and pore solution chemistry. In concrete materials, the electrical resistivity has been well correlated with important durability parameters such as permeability and diffusivity. In addition, this non-destructive test can easily be conducted on fresh or hardened concrete specimens at different ages or various stages of hydration in order to study workability, setting and durability performance of concrete.

The electrical resistivity method has also been applied to investigate corrosion of rebar in concrete, creep, aggregate segregation and freeze and thaw of concrete since they affect the pore network properties. The concrete electrical resistivity techniques is also a suitable replacement for the Rapid Chloride Permeability Test of concrete (as per ASTM C1202) since there is a strong correlation between the electrical resistivity and durability performance of concrete.

Reading Range  Frequency spectrumPhase measurementImpedance accuracyPhase accuracy
1 ~100 Ω  1Hz ~ 30KHz0 ~ 180°± 2% ± 2digit5 % ± 3digit
100Ω~1000Ω
1 ~10 KΩ
10 ~ 100 KΩ
100 KΩ ~1 MΩ  1Hz ~ 10KHz



Measurement Time

FrequencySampling timeReading time (minimum)
1 Hz ~ 4 Hz5 seconds10 seconds
5 Hz ~ 30 KHz1 second2 seconds



Operating conditions

TypeValue
Operating temperature15 ~ 45 °C
Operating humidity30 ~ 80%
Storage temperature0 ~ 60°C
Operating voltage/current100-250 V ± 10%, 60Hz
Dimensions of RCON2™200 x 230 x 70 mm

Surf | Concrete Surface Resistivity

Giatec 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

The electrical resistivity of concrete is correlated well with important durability parameters such as permeability, diffusivity and in general the micro-structure characteristics of concrete. It is a fast and easy method of quality control during new construction.

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
  • 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

 

Reading RangeFrequency rangeAccuracy
0.1 – 100 KΩ.cm13 – 100 Hz± (0.1+1%)
100 – 1000 KΩ.cm13 – 100 Hz± (1+1%)

Measurement Time

FrequencySingle measurement timeTesting time (8 measurements)
13 – 100 Hz1.5 seconds<15 seconds

Operating Conditions

TypeValue
Operating temperature15 ~ 45 °C
Operating humidity30 ~ 80%
Storage temperature0 ~ 60°C
Operating voltage/current100-250 V ± 10%, 60Hz
Dimensions of Surf™200 x 160 x 70 mm



AASHTO TP 95-11 provides the test standard for surface electrical resistivity measurement. An ASTM standard is also under development for this test. A copy of the AASHTO test specification entitled “Standard Method of Test for Surface Resistivity Indication of Concrete’s Ability to Resist Chloride Ion Penetration” can be obtained from here.