Methodology for Calculating the Composition of Fine-Grained Concrete with High Resolution

The article presents the methodology of designing the composition of fine-grained concrete, taking into account the method of compaction, the parameters of the aggregate and the binder obtained on the basis of a complex of experimental studies. The results of studies of the effect of the type of concrete mixtures and their method of compaction on the strength of fine-grained concrete and the relationship of strength with water-cement ratio are presented. An original method of determining the thickness of a cement paste film on aggregate grains is proposed, which allows one to calculate the ratio between the components of a concrete mix based on the physical model of the concrete structure. The developed calculation methodology can be used both on computer systems and manually thanks to the built nomograms. This methodology is suitable for practical application in determining the composition of concretes for fine-walled and thin-walled products, as well as for thick-reinforced, reactive-powder concretes and fiber concrete.