The Fundamental purpose of measuring the strength of concrete test specimens is to estimate the strength of concrete in the actual structure . For procedure Please refer IS 516,IS 456 and IS 10262 ,SP 24 . In these you will find technical aspects of strength developments and testing of concrete . You should read for acceptance criteria of concrete thoroughly .
This is very interesting subject in Concrete Technology . But ANSWER for your question must be understood few concepts by yourself . I can answer your questions in form of some Theoretical data available as per IS but it will be very easy form of knowledge . It must have some efforts from your side too . Here in respect of your question I will share the format for testing of concrete core and its parameters only for your academic interests .
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