Abstract: The invention relates to a method and an apparatus for injecting a material into soil. A material (3) which expands as a consequence of a chemical reaction is injected into the soil (2) through an injection bar (5). During injection, a quantity related to a feed volume flow of the injectable material (3) is monitored. When the quantity indicates that the feed volume flow has dropped below a determined limit value, a reaction regarding a procedure related to the injection follows.

Abstract: The invention relates to a method and arrangement for preventing movement of a structure. An expansion element (6) is arranged in soil. A material which expands inside the expansion element (6) as a consequence of a chemical reaction is injected into the expansion element (6). The expanded expansion element (6) remains in its place in the soil owing to friction and cohesive forces, and it is fastened to the structure (2), the expansion element (6) thus preventing movement of the structure (2).

Abstract: The invention relates to a method and an apparatus for injecting a material into soil. A material (3) which expands as a consequence of a chemical reaction is injected into the soil (2) through an injection bar (5). During injection, a quantity related to a feed volume flow of the injectable material (3) is monitored. When the quantity indicates that the feed volume flow has dropped below a determined limit value, a reaction regarding a procedure related to the injection follows.

Abstract: A hole (6) is provided in soil or a structure, and an injection bar (1) having a fillable expansion element (2) in connection therewith is arranged into the hole. A substance which expands as a consequence of a chemical reaction is injected into the expansion element (2). The expansion element (2) filled with the reacted substance condenses, fills or replaces surrounding soil or lifts as well as stabilizes ground-based structures. A force pressing the expansion element (2) against the soil is generated by the chemical reaction which expands the substance injected into the expansion element (2).