Method and arrangement for improving soil and/or for lifting structures
DCFirst Claim
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1. A method for condensing, filling or replacing soil and/or for lifting structures, the method comprising:
- providing the soil or structure with a hole;
arranging into the hole an injection bar and an expansion element provided in connection therewith; and
injecting a substance into the expansion element, whereby the substance expands as a consequence of a chemical reaction inside the expansion element, so that a force pressing the expansion element against the soil is generated mainly by the chemical reaction.
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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).
15 Citations
27 Claims
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1. A method for condensing, filling or replacing soil and/or for lifting structures, the method comprising:
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providing the soil or structure with a hole; arranging into the hole an injection bar and an expansion element provided in connection therewith; and injecting a substance into the expansion element, whereby the substance expands as a consequence of a chemical reaction inside the expansion element, so that a force pressing the expansion element against the soil is generated mainly by the chemical reaction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An arrangement for condensing, filling or replacing soil and/or for lifting structures, the arrangement comprising:
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an injection bar to be arranged into a hole and provided in connection with an expansion element; a substance to be injected into the expansion element; and means for injecting the substance into the expansion element, wherein the substance to be injected into the expansion element is a substance which expands as a consequence of a chemical reaction inside the expansion element, so that a force pressing the expansion element against the soil is generated mainly by the chemical reaction, and further wherein the injection bar is drawn out of the expansion element after the substance is injected into the expansion element. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method for condensing, filling or replacing soil and/or for lifting structures, the method comprising:
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providing the soil or structure with a hole; arranging into the hole an injection bar and an expansion element provided in connection therewith; injecting a substance into the expansion element, whereby the substance expands as a consequence of a chemical reaction inside the expansion element, so that a force pressing the expansion element against the soil is generated mainly by the chemical reaction; determining, before injecting, a final compression strength of the substance to be injected; and determining the final compression strength of the substance to be injected on the basis of the resistance of the soil and the volume of the expansion element.
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Specification