CN205115305U - High performance concrete is with many anchor points ripple shaped steel fibre - Google Patents
High performance concrete is with many anchor points ripple shaped steel fibre Download PDFInfo
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- CN205115305U CN205115305U CN201520831110.2U CN201520831110U CN205115305U CN 205115305 U CN205115305 U CN 205115305U CN 201520831110 U CN201520831110 U CN 201520831110U CN 205115305 U CN205115305 U CN 205115305U
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Abstract
The utility model provides a high performance concrete is with many anchor points ripple shaped steel fibre, including being the steel fibre of ripple type, be equipped with evenly distributed's cell type nick on the upper and lower surface of steel fibre, and the fluting orientation of cell type nick is mutually perpendicular with the ripple extending direction of steel fibre. This many anchor points ripple shaped steel fibre is through generating the cell type nick at steel fibre surface machining, and the mechanical frictional force and the mechanical anchor that have increased steel fibre and the concrete -based body are done all can, has improved the cohesiveness ability of steel fibre surface with cement stone, and the reinforcing that has improved the steel fibre increases tough effect, has better application prospect.
Description
Technical field
The utility model relates to concrete field, especially a kind of high performance concrete many anchor points ripple type steel fiber.
Background technology
Domestic and international fiber reinforced concrete steel fiber, can be divided into High Tensile Steel Wire to cut off type steel fibers, shear model steel fiber, milling pin-type steel fiber and melt from the mode of production and take out type steel fibers; Flat type steel fiber, ripple type steel fiber, arc steel fiber, Dumbbbell type steel fiber, impression type steel fibers can be divided into from fiber geometry.
Current, kinds of fibers conventional in concrete is flat type steel fiber, ripple type steel fiber, arc steel fiber and milling pin-type steel fiber.In practical engineering application process, flat type steel fiber due to production and processing technology simple, and there is good dispersiveness, achieve and apply widely, but due to flat type steel fiber and concrete water mudstone bond performance poor, easily extract from matrix in concrete structure load bearing process, greatly weaken the activeness and quietness effect of steel fiber.Opposite sex steel fiber (ripple type steel fiber, arc steel fiber and milling pin-type steel fiber) is due to the existence of variable cross-section and end hook, with original concrete, there is good mechanical friction and mechanical anchoring force, and then significantly improve the activeness and quietness effect of steel fiber, but very easily in concrete structure, there is fibrous caking phenomenon again when steel fiber volume volume is bigger than normal, form focal point of stress, and great disadvantageous effect is produced to the weather resistance of concrete structure and security.
High performance concrete should possess high workload performance and high-durability energy, possesses good pump-conveying property.But when after admixture steel fiber in original concrete, especially deformed steel fiber, the serviceability of concrete mix will obviously reduce, and also easily there is fibrous caking phenomenon when fiber volume volume is bigger than normal, therefore for guarantee the dispersed of fiber and mixture functional, the most often select flat type steel fiber as fiber reinforced material in Practical Project.But flat type steel fiber is due to poor with Behavior of Hardened Cement Paste bond performance, to the activeness and quietness limited efficiency of original concrete.Therefore, possessing high workload performance, high-durability energy and high intensity and high performance concrete to make, excavating the activeness and quietness prevent-crevice theory of steel fiber further, design being optimized to high performance concrete steel fiber and being extremely important.
Summary of the invention
The technical problems to be solved in the utility model is that poor to cause its activeness and quietness limited efficiency and deformed steel fiber to disperse in original concrete not good for existing existing high performance concrete flat type steel fiber and Behavior of Hardened Cement Paste bond performance, easily conglomeration occurs.
In order to solve the problems of the technologies described above, the utility model provides a kind of high performance concrete many anchor points ripple type steel fiber, comprise the steel fiber bending in ripple type, be provided with equally distributed grooved indentation in the upper and lower surface of steel fiber, and the fluting direction of each grooved indentation and steel fiber perpendicular at the tangent line at this grooved indentation place.
By generating grooved indentation in steel fiber surface processing, mechanical friction and the mechanical anchoring force of steel fiber and concrete substrate can be increased, improve the bond performance of steel fiber surface and Behavior of Hardened Cement Paste, improve the activeness and quietness effect of steel fiber; Steel fiber adopts ripple type structure, can improve the bond performance of fiber and Behavior of Hardened Cement Paste on the one hand, when steel fiber is extracted from Behavior of Hardened Cement Paste, fiber need take the lead in being straightened on the other hand, and this process can consume portion of energy, and then delay the destructive process of concrete structure, promote the toughening effect of steel fiber.
As further restriction scheme of the present utility model, the groove depth of grooved indentation is 0.08 ~ 0.12mm, and groove width is 0.24 ~ 0.32mm, and the spacing between adjacent grooved indentation is 0.20mm ~ 0.28mm.By the degree of depth of setting steel fiber surface grooved indentation, width and adjacent spacing, avoid that design pitch is bigger than normal, the degree of depth less than normally causes that Stainless-steel fibre toughening effect is not obvious or design pitch is less than normal, the degree of depth is bigger than normal causes steel fiber and Behavior of Hardened Cement Paste mechanical friction and mechanical anchoring force is excessive and disperse resistance to increase.
As further restriction scheme of the present utility model, the horizontal throw between adjacent two crests of steel fiber and adjacent two troughs is 8 ~ 12mm, and the vertical range between adjacent crest and trough is 1.8 ~ 3.2mm.By setting the ripple parameter of steel fiber, can avoid fiber ripple curvature too small Stainless-steel fibre toughening effect significantly or the excessive steel fiber loading process that causes of curvature be pulled off.
The beneficial effects of the utility model are: (1) is by generating grooved indentation in steel fiber surface processing, mechanical friction and the mechanical anchoring force of steel fiber and concrete substrate can be increased, improve the bond performance of steel fiber surface and Behavior of Hardened Cement Paste, improve the activeness and quietness effect of steel fiber; (2) steel fiber adopts ripple type structure, the bond performance of fiber and Behavior of Hardened Cement Paste can be improved on the one hand, when steel fiber is extracted from Behavior of Hardened Cement Paste, fiber need take the lead in being straightened on the other hand, this process can consume portion of energy, and then delay the destructive process of concrete structure, promote the toughening effect of steel fiber.
Accompanying drawing explanation
Fig. 1 is steel fiber lateral plan of the present utility model;
Fig. 2 is steel fiber end view of the present utility model.
In figure: 1, ripple type steel fiber, 2, grooved indentation.
Embodiment
As illustrated in fig. 1 and 2, high performance concrete of the present utility model many anchor points ripple type steel fiber comprises: the steel fiber 1 bending in ripple type, be provided with equally distributed grooved indentation 2 in the upper and lower surface of steel fiber 1, and the fluting direction of each grooved indentation 2 and steel fiber 1 perpendicular at the tangent line at this grooved indentation 2 place.
Wherein, the groove depth of grooved indentation 2 is 0.08 ~ 0.12mm, is preferably 0.1mm; Groove width is 0.24 ~ 0.32mm, is preferably 0.28mm; Spacing between adjacent grooved indentation 2 is 0.20mm ~ 0.28mm, is preferably 0.22mm; Horizontal throw between adjacent two crests of steel fiber 1 and adjacent two troughs is 8 ~ 12mm, is preferably 10mm; Vertical range between adjacent crest and trough is 1.8 ~ 3.2mm, is preferably 2mm.
High performance concrete of the present utility model many anchor points ripple type steel fiber production technique is, select the steel sheet met design requirement, steel plate thickness is 0.5 ~ 1.0mm, generate at selected steel sheet upper and lower surface milling pin the grooved indentation 2 that spacing and the degree of depth meet design requirement by machining tool, as steel fiber 1 in concrete structure with Behavior of Hardened Cement Paste cohere anchor point; Steel plate stamping is pressed into by machining tool the ripple type that curvature meets design requirement; By cutting technique, steel sheet is cut into the steel bar with one fixed width, steel bar width can be set to 30 ~ 50mm; By cutting technique, thin steel bar is cut into the steel fiber 1 with one fixed width again, cutting width and steel sheet thickness are consistent as far as possible, and absolute error is no more than 5%.
Many anchor points ripple type steel fiber of the present utility model in use, the advantage of flat type steel fiber and deformed steel fiber can be had concurrently, good dispersing property is possessed in concrete mix, effectively can improve the pump-conveying property after concrete mix adding of fiber, and mechanical friction and the mechanical anchoring force of itself and Behavior of Hardened Cement Paste is increased by fiber upper and lower surface anchor point, significantly promote toughness and the endurance quality of concrete structure.
Claims (3)
1. high performance concrete many anchor points ripple type steel fiber, it is characterized in that: comprise the steel fiber (1) bending in ripple type, be provided with equally distributed grooved indentation (2) in the upper and lower surface of steel fiber (1), and the fluting direction of each grooved indentation (2) and steel fiber (1) perpendicular at the tangent line at this grooved indentation (2) place.
2. high performance concrete according to claim 1 many anchor points ripple type steel fiber, it is characterized in that: the groove depth of grooved indentation (2) is 0.08 ~ 0.12mm, groove width is 0.24 ~ 0.32mm, and the spacing between adjacent grooved indentation (2) is 0.20mm ~ 0.28mm.
3. high performance concrete according to claim 1 and 2 many anchor points ripple type steel fiber, it is characterized in that: the horizontal throw between adjacent two crests of steel fiber (1) and adjacent two troughs is 8 ~ 12mm, and the vertical range between adjacent crest and trough is 1.8 ~ 3.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831110.2U CN205115305U (en) | 2015-10-26 | 2015-10-26 | High performance concrete is with many anchor points ripple shaped steel fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831110.2U CN205115305U (en) | 2015-10-26 | 2015-10-26 | High performance concrete is with many anchor points ripple shaped steel fibre |
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| Publication Number | Publication Date |
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| CN205115305U true CN205115305U (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520831110.2U Active CN205115305U (en) | 2015-10-26 | 2015-10-26 | High performance concrete is with many anchor points ripple shaped steel fibre |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252465A1 (en) * | 2021-05-31 | 2022-12-08 | 华南理工大学 | Milled steel fiber and application thereof in ultra-high performance concrete and wear-resistant terrace |
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2015
- 2015-10-26 CN CN201520831110.2U patent/CN205115305U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252465A1 (en) * | 2021-05-31 | 2022-12-08 | 华南理工大学 | Milled steel fiber and application thereof in ultra-high performance concrete and wear-resistant terrace |
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