DEVELOPMENT OF A NATIONAL STANDARD FOR TESTING METHODS FOR SELF-COMPACTING CONCRETE MIXTURE

In world practice, self-compacting concrete is increasingly used due to its unique properties and advantages. Self-compacting concrete mixtures have high ductility, better fluidity, high density with low water content due to the use of special effective mineral and chemical additives that provide high performance for concrete. The rheological properties of SCC differ significantly from those of conventional concrete. In this regard, when designing the composition of concrete and controlling its quality in laboratory and production conditions, several methods for controlling the quality of a self-compacting concrete mixture were created. The purpose of this standard was to create a single regulatory document regulating the assessment of the quality of a self-compacting concrete mixture. Concrete from a self-compacting mixture can be used for underground and hydrotechnical construction for the erection of structures of large length, complex geometric shape and densely reinforced structures.