Carbo Detect
CARBO
DETECT—SIMPLE COLORED DYE FIELD TEST FOR CARBONATION
FEATURES
• Test can be carried out completely on site
• Gives depth of carbonation.
• Minimal operator training and no special equipment required.
• Utilizes only one environmentally safe dye.
• Results obtained in less than five minutes are easy to interpreter.
• Economic, fast and easy to use.
TECHNICAL
SPECIFICATIONS
Carbonation is one if the two main causes of corrosion of steel
in concrete, the other is chloride attack. The result of the interaction
of carbon dioxide gas in the atmosphere with the alkaline hydroxides
in the concrete, the carbonation process effectively drops the pH
of the concrete to a level where the steel will corrode. The carbon
dioxide dissolves in water to form carbonic acid, which can migrate
to the reinforcing steel if the concrete is of poor quality(open
pore structure, low cement content, high water cement ratio, or
poor curing of the concrete).
Carbonation is more common in old structures, particularly buildings.
METHOD
Carbo
detect reagent is a type of pH indicator which will indicate the
change of pH on a freshly exposed concrete surface to be checked.
The indicator will change to pink in un carbonated concrete and
remain colorless when sprayed on carbonated (low pH) concrete.
If
the concrete test area is very dry, a light misting with water will
help show the color. By spraying the indicator along a core drilled
from the top surface down to the reinforcement bar it can be readily
seen how far the carbonation has progressed and therefore the outlook
for corrosion,, which will only occur after carbonation reaches
the reinforcement bar. Care should be taken to prevent drilling
and coring dust from contaminating the surface to be tested.
COMPONENTS
CB-6000 Test Kit
200 ml of reagent – sufficient for approximately 100 tests
Sprayer
Carrying Case
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Concrete
Core showing uncarbonated area at the left |
Concrete
NDT Test Main Page
Building
Materials Testing Main Page
For
more information, please E-mail our sales department at: sales@qualitest-inc.com,
or
call us toll-free at: 1-877-884-TEST.
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