This European Standard, a part of the BS EN 12504 series, specifies a method for taking cores from hardened concrete, their examination, preparation for testing and determination of compressive strength.
The standard includes simple guidance on the process of taking cores but does not consider a sampling plan. It also provides procedures for visual examination and compressive strength testing but not the interpretation of results.
An annex to this standard provides information on the effect of aggregate size and core diameter on core specimen strength.
This standard does not give guidance on the decision to drill cores or on the locations for drilling. It does not provide procedures for interpreting the core strength results.