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as the replacement.
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laboratory in a briefcase for wet or dry concrete.
Fast - Results
within minutes at the site.
Low cost per sample compared to laboratory testing.
Results are comparable to laboratory testing.
range from 0.002% to 2% chloride by weight.
compensation for changes in ambient temperature.
Digital display for direct reading
and percentage of
chloride by weight.
Chloride Field Test System
measures the amount of chloride present in wet or dry concrete.
The C-CL-2000 produces
results on-site, within minutes that are accurate and comparable to
expensive laboratory tests. It measures the electrochemical reaction of
a weighted sample placed in an extraction liquid. It automatically
shows a temperature compensated reading of percent of chlorides on its
digital display. A wide range - from 0.002 to 2% chloride by weight -
determination of the chloride ion concentration in concrete is
essential in assessing the need for maintenance on, for example, bridge
decks and parking structures. The test can also be used to ensure that
materials used in new construction are free from potentially harmful
chloride ion levels.
With this method, the concentration
of acid soluble chlorides is measured. In most cases, this
is equivalent to total chloride concentration.
sample of powder is obtained
by drilling and careful quartering. Then an accurately weighed 3 gr.
(0.1 oz) sample is dissolved in 20 ml (0.67 fl. oz.) of extraction
liquid which consists of a precise, measured concentration of acid. For sampling wet concrete
a 3 gr. (0.1 oz.) sample of mortar (i.e. without coarse aggregate) is
chloride ions react with the acid of the extraction liquid in an electrochemical reaction. An electrode, with
integral temperature sensor, is inserted into the liquid and the
electrochemical reaction measured. A uniquely designed instrument
converts the voltage generated by the chloride concentration.
The instrument automatically applies the temperature correction and it
shows the chloride concentration on a LCD display in either lbs. per
yd. or percentage by weight.
Once the sample is obtained, test
can be determined and read in less than five minutes.
avoid contamination, the electrode should be thoroughly washed with de-ionized water after each test.
Replacement packs, containing
twelve bottles of extraction liquid, each for one time use, are
calibration liquids each with known concentrations are supplied with
These liquids are used to establish
the calibration curve, and
to check that the system is functioning correctly. Calibration is not
required for each use. The calibration liquids are colored to avoid
confusion between them and with the extraction liquid.
All equipment necessary to complete
the chloride test is supplied in a standard size carrying case.
Chloride combination electrode with
sensor, cable, and connectors.
powered, high impedance, electronic meter, with temperature
compensation circuits and microprocessor for direct conversion to
percentage of chloride.
pack of 12 jars each with 20 ml (0.67 fl. oz.) of extraction liquid and
5 jars of colored calibration liquid.
electrode wetting agent.
of 100 jars extraction liquid and 20 jars of colored calibration liquid.
system for compliance with AASHTO-T260.
To meet AASHTO's specification the
3 gm (0.1 oz.) sample is digested in sufficient extraction liquid to
bring the volume to 20 ml (0.67 fl. oz).
After 24 hours
digestion period this is titrated with 80 ml (2.7 fl. oz.) of solution.
The C-CL 2020 electronic meter, in AASHTO mode is then used with
chloride electrode to read the concentration of chloride.