Injection concrete is known in the country under the names: "colcret", "Polcret" or "prepact - concret". The method of its execution consists in filling the mold with a thick aggregate constituting the concrete skeleton, that is, about the diameters 40 do 80 mm, and then injecting voids in this aggregate with cement mortar.

Injection concreting must not be used in a clay suspension. The advantages of the injection method are:
— low risk of segregation of the concrete mix and low loss of binder due to leaching, because the velocity of water flow in the aggregate is insignificant,
— obtaining practically homogeneous concrete,
— high accuracy of execution of the top of the underwater structure at the design level and only slight irregularities of the upper surface of the concrete.
An interesting example of the application of injection concreting is the construction of the foundations of the Yokohama bridge, a description of which can be found in the book by A.. Jarominiak and others (1981).
The injection concreting method is also used in the construction of land structures, when concrete is to surround unstiffened reinforcement, pipes or other fittings, and for fear of damaging them, pouring and compacting the concrete mix cannot be used.