The fuzzy method in the compound conformity criteria of concrete strength as quality and safety control

Non-random uncertainty character connected with the evaluation and classification of concrete compressive strength, and also faults and disadvantages of statistical compliance criteria, were reasons to formulate a new fuzzy criterion of concrete strength assessment and classification procedure of produced concrete. Membership functions of mean value of compressive strength, included in conformity criteria, have been determined in the contribution on the basis of fuzzy-statistical experiment.