What is BS EN 13295 - Resistance to carbonation of concrete structures about?
BS EN 13295 specifies an accelerated laboratory method for measuring the resistance against carbon dioxide penetration through repair products and systems, as defined in pr EN 1504-3. The method is based on the measurement of the depth of carbonation of the sample in a concentrated carbon dioxide atmosphere over a fixed time interval.
Note: The method does not measure the resistance to a reduction in pH value that may occur by absorption of other acidic gases (e.g., SO2, HCl).
Who is BS EN 13295 - Resistance to carbonation of concrete structures for?
BS EN 13295 on resistance to carbonation of concrete structures is useful for:
- Construction industries
- Architects
- Civil engineers
- Manufacturers of concrete
- Designers
- Testing laboratories of concrete structures
Why should you use BS EN 13295 - Resistance to carbonation of concrete structures?
Carbonation is alkaline components (e.g., calcium hydroxide) in the cement paste that react with atmospheric carbon dioxide, after which the pH of the mortar or concrete is reduced.
BS EN 13295 specifies the resistance of the repaired product or system against carbonation that is measured by an accelerated laboratory test, where samples are exposed to an atmosphere containing 1 % CO2 at a temperature of (21 ± 2) °C and relative humidity (RH) of (60 ± 10) %. BS EN 13295 also specifies the carbonation depth that is measured by applying a phenolphthalein indicator on a freshly broken piece of the specimen.
Overall, BS EN 13295 assists you in assessing the performance of repair grouts, mortars, and concrete structures without a protective coating system applied.
