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Chloride
Test System
A chloride laboratory in a briefcase for
wet or dry concrete.
Consumables:
Service life
prediction
Corrosion
analysis
Fast - Results within minutes at the
site.
Economical - Low cost per sample compared to laboratory
testing.
Accurate - Results are comparable to laboratory testing.
Covers wide range from 0.002% to 2% chloride by weight.
Automatic compensation for changes in ambient temperature.
Digital display for direct reading of lbs./cu.
yd.
and
percentage of chloride by weight.
Conforms to AASHTO-T- 260.
The 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 - is covered.
The 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.
A 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 used.
The 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 cu.
yd. or percentage by weight.
Once the sample is obtained, test results
can be determined and read in less than five minutes.
To 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 available. Five
calibration liquids each with known concentrations are supplied with
each pack.
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.
C-CL 3700 | Chloride
combination electrode with externally mounted
temperature
sensor, cable, and connectors. |
C-CL 2020
| Battery powered, high impedance,
electronic meter, with temperature compensation circuits and
microprocessor for direct conversion to percentage of chloride. |
C-CL 2012 | Replacement
pack of 12 jars each with 20 ml (0.67 fl. oz.) of extraction liquid and
5 jars of colored calibration liquid. |
C-CL 1030 | Bottle of electrode wetting agent. |
C-CL 2096 | Bulk pack
of 100 jars extraction liquid and 20 jars of colored calibration
liquid. |
C-CL 2050
| Optional 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. |
