Patent EA-004847-B1 (EA)
Title: Reinforcement fiber bundle and production method of such reinforcement fiber bundle
Inventor: VANCRAEYNEST YVES MAURITS RENE
IPC: E04C5/01
Filed: 2001-12-06
Abstract: 1. Reinforcement fiber bundle (1), comprising a number of substantially parallel reinforcement fibers (2) for reinforcing a curable material (11), which reinforcement fibers (2) are joined at least at the ends (3) thereof by means of an adhering substance (5) which loses its cohesion under the influence of mechanical forces during mixing of the reinforcement fiber bundles (1) with at least the curable material (11), characterized in that the adhering substance substantially comprises a material which is substantially inert with respect to the non-cured curable material (11), characterized in that the adhering substance (5) substance substantially comprises mortar, concrete, gypsum, cement or a mixture thereof. 2. Reinforcement fiber bundle (1) according to claim 1, characterized in that the adhering substance (5) comprises secondary reinforcement fibers (6). 3. Reinforcement fiber bundle (1) according to claim 2, characterized in that the secondary reinforcement fibers (6) comprise glass fibers and/or polypropylene fibers with a diameter of maximally 100 micrometer. 4. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the length-diameter ratio of the reinforcement fiber bundle (1) is at least 0.2 and maximally 5. 5. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the length-diameter ratio of the reinforcement fiber bundle (1) is at least 0.5 and maximally 1.5. 6. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the reinforcement fiber bundle (1) is substantially cylindrical. 7. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the length-diameter ratio of the reinforcement fibers (2) is at least 40. 8. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the reinforcement fibers (2) are made of steel with a tensile strength between 500 and 3000 N/mm<2>. 9. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the ends (3) of the reinforcement fibers (2) are hook-shaped. 10. Reinforcement fiber bundle (1) according to one or more of the preceding claims, characterized in that the bundle comprises end faces, which are substantially evenly covered with the adhering substance (5). 11. Reinforcement fiber bundle (1) according to claim 9 or 10, characterized in that substantially only the hook-shaped ends (3) of the reinforcement fibers (2) are comprised in the adhering substance (5). 12. Method for joining reinforcement fibers (2) to reinforcement fiber bundles (1) for reinforcing a curable material (11), in which reinforcement fibers (2) are bundled in a substantially parallel position and at least at their ends (3) are joined, characterized in that the reinforcement fibers (2) are joined by applying an adhering substance (5) to at least the ends of the reinforcement fiber bundle (1), which adhering substance is substantially inert in relation to the non-cured curable material (11) and which substance loses its cohesion under the influence of mechanical forces during the mixing process of the reinforcement fiber bundles (1) with at least the curable material (11). 13. Method according to claim 12, characterized in that a curing adhering substance (5) is applied and then cured. 14. Method according to claim 12 or 13, characterized in that the substantially parallel bundling of the reinforcement fibers (2) takes place under tension. 15. Reinforcement fiber bundle (1), comprising a number of substantially parallel reinforcement fibers (2) for reinforcing a curable material (11), which reinforcement fibers (2) are joined at least at the ends (3) thereof by means of an adhering substance (5) which loses its cohesion during the mixing of the reinforcement fiber bundles (1) with at least the curable material (11), characterized in that the adhering substance (5) comprises secondary reinforcement fibers (6). 16. Reinforcement fiber bundle (1) according to claim 15, characterized in that the secondary reinforcement fibers (6) comprise glass fibers and/or polypropylene fibers with a diameter of maximally 100 micrometer. 17. Reinforcement fiber bundle (1) according to claim 15 or 16, characterized in that it comprises end faces which are substantially evenly covered with the adhering substance (5). 18. Reinforcement fiber bundle (1) according to one of claims 15-17, characterized in that the ends (3) of the reinforcement fibers (2) are hook-shaped. 19. Reinforcement fiber bundle (1) according to claim 18, characterized in that substantially only the hook-shaped ends (3) of the reinforcement fibers (2) are comprised in the adhering substance (5). 20. Reinforcement fiber bundle (1), comprising a number of substantially parallel reinforcement fibers (2) for reinforcing a curable material (11), which reinforcement fibers (2) are joined at least at the ends (3) thereof by means of an adhering substance (5) which loses its cohesion during the mixing of the reinforcement fiber bundles (1) with at least the curable material (11), characterized in that substantially only the hook-shaped ends (3) of the reinforcement fibers (2) are comprised in the adhering substance (5).