BS EN 12390-12:2020 PDF Download

The BS EN 12390-12:2020 standard is specifically focused on determining the carbonation resistance of hardened concrete using the accelerated carbonation method. The standard outlines the test conditions and procedures required to quantify the rate of carbonation in concrete.

The test involves subjecting the concrete specimens to controlled exposure conditions with increased levels of carbon dioxide. Prior to testing, the specimens undergo a period of preconditioning, which is then followed by the exposure period.

It is important to note that the standard specifies a minimum test duration of 112 days, which includes a minimum age of 28 days for specimen curing under water, a minimum preconditioning period of 14 days, and an exposure period to increased carbon dioxide levels of 70 days.

However, it is crucial to understand that this standard is not intended for determining the carbonation depths in existing concrete structures. Instead, it focuses on evaluating the carbonation resistance of hardened concrete using an accelerated testing method.