Review article

In the article, there is proposed an alternative statistically substantiated value of the minimum strength of concrete in a series of samples when determining and evaluating the strength of control samples for all established classes of concrete in terms of compression strength. The calculation was made using the statistical method of acceptance quality control on a quantitative basis for the normal distribution law. This method makes it possible to implement a risk-based approach and reflects the concept of reliability in terms of using probabilistic-statistical methods to substantiate the normative and design characteristics of materials. There is demonstrated the relationship between the proposed minimum strength value and the strength values of concrete, which are laid down in the design for the second group of limit states. The authors have confirmed the necessity of tracking the heredity of the materials` properties at all stages of the life cycle of construction products in order to ensure the required reliability of buildings and structures under construction. The implementation of a quality management system complying with the requirements of ISO 9000 series standards, which is based on a risk-oriented approach and customer orientation in the construction industry in general (at all stages) and in the control system in particular, can be regarded as promising. This will make it possible to implement statistical quality control, which is the basis of reliability.