CN204738453U - Prestress wire slowly bonds - Google Patents
Prestress wire slowly bonds Download PDFInfo
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- CN204738453U CN204738453U CN201520332934.5U CN201520332934U CN204738453U CN 204738453 U CN204738453 U CN 204738453U CN 201520332934 U CN201520332934 U CN 201520332934U CN 204738453 U CN204738453 U CN 204738453U
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- steel strand
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- adhesive
- plastic sheath
- prestress steel
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Abstract
The utility model discloses a prestress wire slowly bonds, prestress wire slowly bonds includes steel strand wires, adhesive, HDPE plastic sheath, the steel strand wires structure is 17, and the diameter is 15.20mm, and intensity is 1860MPa, the adhesive is the epoxy glue adhesion agent, the HDPE plastic sheath is high density polyethylene, 1.0-1.4mm of sheath thickness. The utility model has the advantages that the anticorrosive ability reinforce than steel strand wires, the construction is simple and convenient, swift, because the steel strand wires surface scribbles the adhesive, the outside package has the HDPE plastic sheath, need not lay the bellows during construction, does not also need to be in the milk, in addition, because adhesive abundant solidification in after the construction 9-24 months, just so make steel strand wires, adhesive. HDPE plastic sheath and concrete become a whole, and the security of concrete structure thing has obtained great improvement.
Description
Technical field
The utility model belongs to prestressed concrete steel technical field, is widely used in sea port dock and offshore oil production engineering; Oil tank, silo circular configuration; Industry and civilian construction; Sewage treatment project; Bridge engineering; The prestressed reinforced concrete constructions such as nuclear power plant concrete protective sleeve, particularly relate to a kind of slow-adhesion prestress steel strand.
Background technology
Current steel strand are generally post-tensioned prestressing steel strand, and executing man-hour requirement laying bellows, and needing grouting, construction is complicated, efficiency is lower, cost is higher, and security performance also has much room for improvement.
Summary of the invention
The purpose of this utility model is to provide a kind of slow-adhesion prestress steel strand, to solve the problem that construction is complicated, efficiency is lower, cost is higher and security performance has much room for improvement used existing for current techniques.
For realizing the purpose of this utility model, the utility model provides a kind of slow-adhesion prestress steel strand, described slow-adhesion prestress steel strand comprises from inside to outside three layers, wherein internal layer is steel strand, intermediate layer is bonding adhesive, skin is high density polyethylene (HDPE) (HDPE) plastic sheath, and described internal layer, intermediate layer and outer three layers of compact siro spinning technology, one-tenth is integrated.
Preferably, described outer field outer wall is provided with cross rib, and rib width is 0.4 ~ 0.6 times of helical pitch.
Preferably, the structure of described slow-adhesion prestress steel strand is 1 × 7, and nominal diameter is 15.20mm, and nominal tenacity is 1860MPa level.
Preferably, described bonding adhesive is epoxyn, and every meter of weight 180 ~ 210 grams, hardening time is 9 ~ 24 months.
Preferably, the jacket thickness 1.0 ~ 1.4mm of described HDPE plastic sheath.
The beneficial effects of the utility model are, the utility model is owing to have employed steel strand, bonding adhesive and HDPE plastic sheath, therefore when stretch-draw uses, can not need to add bellows APPENDIX MATERIALSThe again, do not need to pour water cement mortar after stretch-draw in bellows yet, thus save material and man-hour, more quick and convenient; This utility model is due to after stretch-draw, and the solidification in 9 ~ 24 months of the bonding adhesive in slow cohesion, therefore the security performance of concrete structure just substantially increases.
Accompanying drawing explanation
Fig. 1 is that master of the present utility model looks cross-sectional view;
Fig. 2 is side cross-sectional structural representation of the present utility model;
In figure, 1--steel strand, 2--bonding adhesive, 3--HDPE plastic sheath, 4-cross rib.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be understood to specific embodiment described herein only in order to explain the utility model, be not limited to protection domain of the present utility model.
As shown in Figure 1 and Figure 2, the utility model provides a kind of slow-adhesion prestress steel strand, described slow-adhesion prestress steel strand comprises from inside to outside three layers, wherein internal layer is steel strand, intermediate layer is bonding adhesive, skin is high density polyethylene (HDPE) (HDPE) plastic sheath, and described internal layer, intermediate layer and outer three layers of compact siro spinning technology, one-tenth is integrated.
Preferably, described outer field outer wall is provided with cross rib, and rib width is 0.4 ~ 0.6 times of helical pitch.
Preferably, the structure of described slow-adhesion prestress steel strand is 1 × 7, and nominal diameter is 15.20mm, and nominal tenacity is 1860MPa level.
Preferably, described bonding adhesive is epoxyn, and every meter of weight 180 ~ 210 grams, hardening time is 9 ~ 24 months.
Preferably, the jacket thickness 1.0 ~ 1.4mm of described HDPE plastic sheath.
The utility model slow-adhesion prestress steel strand be a kind of in prestressed structure construction the prestress wire without grouting agent, epoch-making, anticorrosion type.Compared with general post-tensioned prestressing steel strand, it is on the surface of steel strand, coat the resin adhesive not yet solidified as grouting agent, and this bonding adhesive can under normal temperature condition, along with the continuity of time is progressively solidified completely.On the surface of resin adhesive, cover and be pressed with screw-shaped polyethylene cannula.With the bonding adhesive of resin formulations, hardening time is long, ensure that without the time needed for bond stress state, and after works Shi Hanzhang, As time goes on spontaneous curing, makes prestress wire, bonding adhesive, pe sheath become to be integrated with structural concrete.
There is features:
(1) grouting agent is not needed
In the construction of engineering structures, by adhesion prestress steel strand after the position cloth muscle of design code, stretch-draw, anchoring, presstressed reinforcing steel duct bellows need not be configured, penetrate presstressed reinforcing steel, stretch-draw anchor post-grouting operation.
(2) slow-adhesion prestress steel strand after solidification and structural concrete formed one overall because of after being coated in the epoxy adhesive cures on prestress wire, steel strand and resin adhesive and polyethylene cannula are bonded together, the overcoat of prestress wire, bondd by cancavo-convex cross rib and structural concrete, make it formation entirety.
(3) higher corrosion resistance is had
Prestress wire applies epoxyn outward, and have HDPE plastic sheath at its outer cover again, after solidification, epoxyn, HDPE plastic sheath all have Corrosion Protection preferably, therefore it has higher corrosion resistance.
(4) there is good functional performance
Because HDPE plastic sheath diameter is less, be all easier to for the Reinforcement Design in thin-slab structure and construction, again because of ground tackle and the tensioner of slow-adhesion prestress steel strand use, all identical with general steel strand, therefore its functional performance is good.
The utility model provides a kind of slow-adhesion prestress steel strand not needing grouting agent, described slow-adhesion prestress steel strand is made up of steel strand, bonding adhesive, HDPE plastic sheath, the diameter of steel strand is 15.20mm, every meter of weight of bonding adhesive is 180 ~ 210 grams, HDPE plastic jacket thickness is 1.0 ~ 1.4mm, and described three layer construction is compact closely knit.
The utility model adopts the steel strand for prestressed concrete of high-quality to do raw material, auxiliary material made by bonding adhesive and HDPE polyethylene, completed by steel strand unwrapping wire → adhesive coated → HDPE plastic parcel → first water-cooled → roll mark → water-cooled → this technological process of traction → take-up, require in manufacturing process that line speed must not higher than 26 ms/min, water cooling is wanted fully, to make the HDPE sheath of roll forming shaping rapidly.
The utility model has following technique effect: slow-adhesion prestress steel strand compact conformation, and compactness is good, because surface is with ribbing, so better with concrete bond stress.Because the bonding adhesive adopted has certain curing time, therefore substantially increase its security performance.
This utility model, owing to employing bonding adhesive and HDPE plastic sheath, therefore no longer needs when stretching construction to use bellows, does not also just need to use grouting agent, brings convenience to construction, fast.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a slow-adhesion prestress steel strand, it is characterized in that, described slow-adhesion prestress steel strand comprises from inside to outside three layers, wherein internal layer is steel strand, intermediate layer is bonding adhesive, skin is high density polyethylene plastic sheath, and described internal layer, intermediate layer and outer three layers of compact siro spinning technology, one-tenth is integrated.
2. slow-adhesion prestress steel strand according to claim 1, is characterized in that, described outer field outer wall is provided with cross rib, and rib width is 0.4 ~ 0.6 times of helical pitch.
3. slow-adhesion prestress steel strand according to claim 1 and 2, is characterized in that, the structure of described slow-adhesion prestress steel strand is 1 × 7, and nominal diameter is 15.20mm, and nominal tenacity is 1860MPa level.
4. slow-adhesion prestress steel strand according to claim 1 and 2, is characterized in that, described bonding adhesive is epoxyn, and every meter of weight 180 ~ 210 grams, hardening time is 9 ~ 24 months.
5. slow-adhesion prestress steel strand according to claim 1 and 2, is characterized in that, the jacket thickness 1.0 ~ 1.4mm of described HDPE plastic sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332934.5U CN204738453U (en) | 2015-05-21 | 2015-05-21 | Prestress wire slowly bonds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332934.5U CN204738453U (en) | 2015-05-21 | 2015-05-21 | Prestress wire slowly bonds |
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| CN204738453U true CN204738453U (en) | 2015-11-04 |
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| CN201520332934.5U Active CN204738453U (en) | 2015-05-21 | 2015-05-21 | Prestress wire slowly bonds |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412130A (en) * | 2018-04-11 | 2018-08-17 | 桂林理工大学 | A kind of delayed bonding prestressed tendon and preparation method thereof that tack time is controllable |
| CN109083329A (en) * | 2018-09-29 | 2018-12-25 | 沈阳建筑大学 | The application method of recyclable delayed bonding prestressed tendon |
| CN109294035A (en) * | 2018-09-29 | 2019-02-01 | 沈阳建筑大学 | Recyclable delayed bonding prestressed tendon and preparation method thereof |
| CN109322442A (en) * | 2018-09-29 | 2019-02-12 | 沈阳建筑大学 | A kind of recyclable delayed bonding prestressed tendon and preparation method thereof |
| CN110821046A (en) * | 2019-11-20 | 2020-02-21 | 北京市建筑工程研究院有限责任公司 | Slow-bonding prestressed tendon and preparation method thereof |
| CN115162731A (en) * | 2022-06-16 | 2022-10-11 | 北京市政路桥股份有限公司 | Pool construction method based on prestress engineering |
-
2015
- 2015-05-21 CN CN201520332934.5U patent/CN204738453U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412130A (en) * | 2018-04-11 | 2018-08-17 | 桂林理工大学 | A kind of delayed bonding prestressed tendon and preparation method thereof that tack time is controllable |
| CN109083329A (en) * | 2018-09-29 | 2018-12-25 | 沈阳建筑大学 | The application method of recyclable delayed bonding prestressed tendon |
| CN109294035A (en) * | 2018-09-29 | 2019-02-01 | 沈阳建筑大学 | Recyclable delayed bonding prestressed tendon and preparation method thereof |
| CN109322442A (en) * | 2018-09-29 | 2019-02-12 | 沈阳建筑大学 | A kind of recyclable delayed bonding prestressed tendon and preparation method thereof |
| CN110821046A (en) * | 2019-11-20 | 2020-02-21 | 北京市建筑工程研究院有限责任公司 | Slow-bonding prestressed tendon and preparation method thereof |
| CN115162731A (en) * | 2022-06-16 | 2022-10-11 | 北京市政路桥股份有限公司 | Pool construction method based on prestress engineering |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |