Fastening device comprising thread-forming screws and hardened aluminate-containing inorganic composition

Abstract

In particular, the present invention provides a fastening device that is easy and safe to manufacture, enables efficient and reliable fastening of threaded screws, and provides an increased load capacity that strengthens the bond and is maintained even in the event of high temperatures and fire during operation. [Solution] A fastening device comprising a screw having a shaft and at least one threaded helix, the threaded helix being positioned on the shaft, and a hardened compound, wherein the screw is positioned in a hole in a base material (material to be fastened), and the gap between the shaft and the wall of the hole is filled with the hardened aluminate-containing inorganic composition.

Claims

1. It has a shaft portion and at least one threaded helix, the threaded helix being positioned on the shaft portion. The screw, Aluminate-containing inorganic hardened compound and It consists of, The screw is positioned in a hole in the base material (the material to be fastened), and the shaft portion and the wall of the hole The fastening device has gaps filled with the hardened compound, The aluminate-containing inorganic curing compound is composed of at least one component in the aqueous phase. Aluminate-containing cement components of various types, as well as phosphoric acid, metaphosphoric acid, phosphorous acid, phosphate At least one blocking agent selected from the group consisting of vinic acid and boric acid, and further A multi-component compound containing an initiator for aluminate-containing cement components. It is characterized by being obtained by hardening a cementitious material. Fastening device.

2. The initiator includes a mixture of alkali metal salts and / or alkaline earth metal salts. The fastening device according to claim 1, characterized by the features described above.

3. Claim 1 or 2 is characterized in that the initiator comprises an activating component and an accelerating component. The fastening device described above.

4. Claims that the activating agent component contains an alkali hydroxide and the accelerator component contains a lithium salt The fastening device described in item 3.

5. The activating agent component is sodium hydroxide, and the accelerating agent component is lithium sulfate. The fastening device described in item 4.

6. The aforementioned further components include citric acid, tartaric acid, lactic acid, salicylic acid and gluconic acid, and the same A mixture of these, preferably selected from the group consisting of citric acid, tartaric acid, or a mixture thereof. A fastening device according to any one of claims 1 to 5, characterized by containing a retarder. 。

7. The aforementioned further components include limestone filler, sand, corundum, dolomite, and alkali-resistant glass. At least one mineral filler selected from the group consisting of crushed stone, gravel, medium gravel, and mixtures thereof. A fastening device according to any one of claims 1 to 6, characterized in that it contains a filler material.

8. The aluminate-containing cement component is calcium aluminate cement in an aqueous phase. (CA) or calcium sulfoaluminate cement (CAS) in an aqueous phase is based on The fastening device according to any one of claims 1 to 7, characterized by the above.

9. Any one of claims 1 to 8, characterized in that the pH of the further component is greater than 10. The fastening device described above.

10. Any one of 1 to 9, characterized in that the aluminate-containing component also includes a plasticizer. The fastening device described in item 1.

11. The aluminate-containing component and the further component are in the form of an aqueous suspension. A fastening device according to any one of claims 1 to 10, characterized by the following:

12. The base material is a mineral building material, particularly concrete, as described in the description 1 to 1. A fastening device as described in any one of item 1.

13. The screw thread helix is ​​characterized by screwing into the fitting screw thread on the base material. A fastening device as described in any one of items 1 to 12.

14. The threaded helix has a threaded outer diameter and a threaded pitch, and the threaded outer diameter and the threaded The ratio to the pitch is in the range of 1.0 to 2.0, preferably 1.2 to 1.

6. A fastening device according to any one of claims 1 to 13, characterized by the following:

15. Any one of claims 1 to 14, characterized in that the screw is a concrete screw. The fastening device described above.

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