ABSTRACT
The work deals with using of mortar injection for building construction, reconstruction and their reinforcement. It concerns technological details of the preparation of concrete, reinforced concrete structures in factory conditions as well. Taking into consideration that the ultimate strength of concrete is due to the amount of broken stone contained in the mass, our aim is to find the best option in which the mortar will be best fit in its empty spaces. As it is shown in the diagrams there is the version where a single particle is situated in the middle of two ones.
