CN104832720A - Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof - Google Patents
Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof Download PDFInfo
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- CN104832720A CN104832720A CN201510214983.3A CN201510214983A CN104832720A CN 104832720 A CN104832720 A CN 104832720A CN 201510214983 A CN201510214983 A CN 201510214983A CN 104832720 A CN104832720 A CN 104832720A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement
- F16L9/085—Reinforced pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/86—Cores
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/005—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparing method of a novel reinforced bar type ultra-high-performance concrete pipeline. An adopted pipeline forming mold comprises a steel outer mold and an inner mold. The method comprises the following steps that (1) a steel bar framework is welded, a longitudinal bar of the framework is unchanged, and an annular bar is processed into an oval shape; (2) the mold is assembled, a steel bar framework is fixed, a pumping machine is connected with the mold, and the sealing performance is checked; (3) an ultra-high-performance concrete mixture is prepared; (4) the ultra-high-performance concrete mixture is added into the pumping machine, and a pumping jacking process is adopted for forming a pipeline; (5) after the pumping is completed, a closed grouting opening of the mold is sealed in time; (6) a pipeline with the mold is subjected to integral maintenance; (7) the mold is dismounted; (8) hydrothermal maintenance or natural maintenance is carried out after the pipeline mold dismounting. The invention also discloses the novel reinforced bar type ultra-high-performance concrete pipeline. The pipeline annular bar prepared by the method provided by the invention is in an oval shape, so that the strength of a reinforced bar is effectively utilized, and the pipeline strength is improved.
Description
Technical field
The invention belongs to building material field, be specifically related to ultra-high performance concrete pipeline of a kind of novel form of reinforcement and preparation method thereof.
Background technique
On water supply and drainage pipeline market now, general has two kinds of pipelines, and one is plastic pipe, and another kind is reinforced concrete pipiline.Also have in addition cast-iron pipe and concrete duct etc. due to defect obvious, performance is not widely used not as plastic tube and concrete reinforced pipe.It is little that plastic pipe has inwall friction factor, constructs convenient, the advantages such as anti-corrosion capacity is strong.But plastic pipe also has distortion large, and anti-pressure ability is not enough, the high obvious limitation of unit price.It is high that reinforced concrete pipiline has intensity, the feature that unit price is low, but relative to plastic pipe, have inner wall coarse again, from great, and the inferior positions such as constructional difficulties and corrosion resistance are not strong.Moreover, conventional steel bar concrete pipeline form of reinforcement is reasonable not, and cause pipeline local easily cracking, cracking resistance is not strong, extremely unfavorable to the impermeability of bearing pipe.In sum, inventing a kind of novel high-quality pipeline addresses these problems very urgent.
In pipeline material, what conventional pipelines was applied is all conventional concrete.Ultra-high performance concrete has obtained considerable research and development at present, its performance has high strength, high tenacity, high cracking resistance and well workability, at electric power cover plate, the application such as railway cover plate defines ripe technology, and according to the lid surface unusual light of practice by mold forming in plastics, be applicable to the shaping of inner-walls of duct, solve the problem that conventional concrete inner-walls of duct is coarse.As known from the above, ultra-high performance concrete and pipeline field can slitless connections.In arrangement of reinforcement, the Framework Of Steel Reinforcement of conventional pipelines overlaps form by indulging muscle and circular ring muscle, can concentrate at four local stress that produce up and down of pipeline when destroying, insides of pipes upper-lower position tension, left and right, outside tension, circular ring muscle arrangement of reinforcement is even, and can not adapt to the uneven stress condition of pipeline, therefore a kind of novel form of reinforcement can address this problem.
Existing normal concrete pipeline forming technique mainly comprises centrifuge method and roller-suspending two kinds.Centrifuge method adopts centrifugal forming technology, and concrete mix high speed centrifugation is become pipe, and its advantage is that manufacturing efficiency is high.Roller-suspending is rotated around the axle center of certain radius by steel rider, directly that concrete mix is extruded, has the advantage that manufacturing efficiency is high, the inwall of production pipeline is comparatively smooth.
These two kinds of concrete duct forming methods respectively have pluses and minuses, but all have no idea to adapt to the shaping of ultra-high performance concrete pipeline.The ultra-high performance concrete that ultra-high performance concrete pipeline adopts contains Steel Fibre and not containing coarse aggregate, adopts that centrifuge method is shaping easily causes ultra-high performance concrete layering, adopts rolling suspension process then easily to occur the problem being difficult to form body.Therefore, to adopt the method for pumping jacking to carry out pipeline shaping in the present invention.
Summary of the invention
Object of the present invention: ultra-high performance concrete pipeline of a kind of novel form of reinforcement and preparation method thereof.This pipeline adopts pumping-up method shaping, and pipeline material adopts skeleton and the ultra-high performance concrete of novel form of reinforcement.Compared to the pipeline that market exists, have high strength, high-durability, high cracking resistance, high reinforcing bar utilization ratio, arrangement of reinforcement is reasonable, inner wall smooth, the advantages such as moderate, easy construction of conducting oneself with dignity.
The object of the present invention is achieved like this:
A kind of ultra-high performance concrete pipeline of novel form of reinforcement, comprise pipe main body and be arranged on the Framework Of Steel Reinforcement in described pipe main body, described Framework Of Steel Reinforcement comprises the ring muscle evenly arranged along pipe main body length direction and the vertical muscle connecting each ring muscle, and the shape of described ring muscle is oval.
Further, described Framework Of Steel Reinforcement protective layer thickness is not less than 10mm, and pipe thickness is not less than 60mm.
The present invention provides a kind of ultra-high performance concrete pipeline preparation method of novel form of reinforcement on the other hand, and the pipeline shaping die of employing comprises steel external mold and internal mold, comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle is processed into ellipse.
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique to prepare pipeline;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) mould is removed;
8) carry out hydrothermal curing or natural curing after pipeline form removal, meet the demands to intensity.
Further, in described ultra-high performance concrete, the mass ratio of sand and gelatinization material is 0.8 ~ 1.5:1, the mass ratio of water and gelatinization material is 0.14 ~ 0.20:1, water reducing agent consumption is 1.6 ~ 3.0% of gelatinization material quality, fiber quality is 3% ~ 17% of gelatinization material quality, in described gelatinization material, cement quality percentage is 80% ~ 40%, and surplus is mineral admixture.
Further, described fiber is micro steel fiber.
Further, described fiber is micro steel fiber and organic fiber mixture, and wherein the addition content of organic fiber is 0.1% ~ 0.5% of gelatinization material quality, and surplus is micro steel fiber.
Further, described organic fiber is PVA fiber or superhigh molecular weight polyethylene fibers.
Further, the time of described hydrothermal curing is 24h-72h, and curing temperature is 75-90 degree Celsius, and humidity is greater than 90%.
Further, described Framework Of Steel Reinforcement protective layer thickness is not less than 10mm, and pipe thickness is not less than 60mm.
Further, described internal mold is rigid plastics internal mold or steel-rubber combined inner mold, and described steel-rubber combined inner mold is a kind of inner membrance be spliced by steel assembly and the rubber section between steel assembly.
Further, the material of described rigid plastics internal mold is acrylic acid copolymer PVC＝polyvinyl chloride, polyethylene, PVC＝polyvinyl chloride, rigid polyvinyl chloride, and rigid plastics internal mold thickness is more than or equal to 5mm.
Further, when internal mold is steel-rubber combined inner mold, when removing mould in described step 7, remove steel external mold and steel-rubber combined inner mold, when internal mold is rigid plastics internal mold, when removing mould in described step 7, remove steel external mold and rigid plastics internal mold, or only remove steel external mold, retain the part of rigid plastics internal mold as pipeline.
Beneficial effect of the present invention:
1, compared with the ultra-high performance concrete pipe of joining circular ring muscle, reinforcing bar is in tension side forever, makes the intensity of reinforcing bar obtain effective utilization, and collapse load improves more than 10%.
2, compared with plastic tube, intensity height of the present invention not easily produces distortion, and quality greatly not easily occurs floating;
3, compared with traditional reinforced concrete pipiline, inventive pipeline inner wall smooth, the roughness coefficient is little, be conducive to current to pass through, and the outer ultra-high performance concrete that adopts significantly can reduce pipeline wall thickness under the constant prerequisite of bearing capacity, reduces conduit volume, constructability, the reduction of erection time.
4, adopt pumping jacking technique, effectively solve the shaping difficult problem of ultra-high performance concrete pipeline.
Accompanying drawing explanation
Fig. 1 is the ultra-high performance concrete pipeline transverse cross-sectional view of a kind of novel form of reinforcement of the present invention.
Fig. 2 is the ultra-high performance concrete pipeline B-B sectional drawing of a kind of novel form of reinforcement of the present invention.
Fig. 3 is the ultra-high performance concrete pipeline C-C sectional drawing of a kind of novel form of reinforcement of the present invention.
Shown in figure be: 1-ring muscle; 2-pipe main body.
Embodiment
Be described in further detail object of the present invention below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
embodiment 1
As shown in Figure 1 to Figure 3; a kind of ultra-high performance concrete pipeline of novel form of reinforcement; comprise pipe main body 2 and be arranged on the Framework Of Steel Reinforcement in described pipe main body 2; described Framework Of Steel Reinforcement comprises the ring muscle 1 evenly arranged along pipe main body 2 length direction and the vertical muscle connecting each ring muscle 1; the shape of described ring muscle 1 is oval; described Framework Of Steel Reinforcement protective layer thickness is not less than 10mm, and pipe thickness is not less than 60mm.
embodiment 2
A kind of ultra-high performance concrete pipeline preparation method of novel form of reinforcement, the pipeline shaping die adopted comprises steel external mold and rigid plastics internal mold, in rigid plastics, mold materials is acrylic acid copolymer PVC＝polyvinyl chloride, thickness is 8mm, internal diameter of the pipeline 1000mm, wall thickness 60mm (see Fig. 1 to Fig. 3), comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle 1 is processed into ellipse, joins 16 vertical muscle, vesica piscis muscle spacing 240mm;
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) remove mould, remove steel external mold and rigid plastics internal mold;
8) carry out hydrothermal curing after pipeline form removal, meet the demands to intensity.
Specifically, in ultra-high performance concrete described in the present embodiment, the mass ratio of sand and gelatinization material is 0.8:1, the mass ratio of water and gelatinization material is 0.14:1, water reducing agent consumption is 3.0% of gelatinization material quality, fiber blends amount of substance is 17% of gelatinization material quality, in described gelatinization material, cement quality percentage is 80%, and surplus is mineral admixture.
Specifically, the described fiber of the present embodiment is micro steel fiber, and water reducing agent is the polycarboxylate water-reducer of 40% solid content.
Specifically, the time of the described hydrothermal curing of the present embodiment is 24h, and curing temperature is 90 degrees Celsius, and humidity is greater than 90%.
Specifically, the described Framework Of Steel Reinforcement of the present embodiment is positioned at pipe main body 2, and protective layer thickness is not less than 10mm.
Pipeline external load test method prepared by the present embodiment is according to GBT 16752-2006 " Test methods of concrete and reinforced concrete drainage and sewer pipes ".Test to obtain cracking load 100.36kN/m, collapse load 155.32 kN/m.This pipeline external pressure load has reached III grade of concrete reinforced pipe cracking load 89 KN/m of internal diameter 1000, wall thickness 100mm, the standard of collapse load 134KN/m, and wall thickness reduces 40%, during installation, as shown in Figure 1, A in figure need be faced up.
embodiment 2
A ultra-high performance concrete pipeline preparation method for novel form of reinforcement, the pipeline shaping die of employing comprises steel external mold and steel-rubber combined inner mold, internal diameter of the pipeline 1200mm, and wall thickness 90mm, comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle 1 is processed into ellipse, joins 20 vertical muscle, hoop muscle spacing 150mm;
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) remove mould, remove steel external mold and steel-rubber combined inner mold;
8) carry out natural curing after pipeline form removal, meet the demands to intensity.
Specifically, in the described ultra-high performance concrete of the present embodiment, the mass ratio of sand and gelatinization material is 1.0:1, the mass ratio of water and gelatinization material is 0.16:1, and water reducing agent consumption is 2.5% of gelatinization material quality, and fiber quality is 10% of gelatinization material quality.In described gelatinization material, cement quality percentage is 70%, and surplus is mineral admixture.
Specifically, the described fiber of the present embodiment is micro steel fiber and organic fiber mixture, and wherein organic fiber addition content is 0.5% of gelatinization material quality, and surplus is micro steel fiber, and water reducing agent is the polycarboxylate water-reducer of 40% solid content.
Specifically, the described organic fiber of the present embodiment is PVA fiber.
Specifically, the described Framework Of Steel Reinforcement of the present embodiment is positioned at pipe main body 2, and protective layer thickness is not less than 10mm.
Duct test prepared by the present embodiment obtains cracking load 120.25kN/m, collapse load 230.37 kN/m.External load test method is with embodiment 1.
This pipeline external pressure load has reached III grade of concrete reinforced pipe cracking load 107 KN/m of internal diameter 1200, wall thickness 120mm, the standard of collapse load 161KN/m, and wall thickness reduces 25%, and mounting type is identical with embodiment 1.
embodiment 3
A ultra-high performance concrete pipeline preparation method for novel form of reinforcement, the pipeline shaping die of employing comprises steel external mold and rigid plastics internal mold, and in rigid plastics, mold materials is PVC＝polyvinyl chloride, thickness is 5mm, internal diameter of the pipeline 1000mm, wall thickness 80mm, comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle 1 is processed into ellipse, joins 16 vertical muscle, vesica piscis muscle spacing 240mm;
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) remove mould, only remove steel external mold, do not remove rigid plastics internal mold;
8) carry out hydrothermal curing after pipeline form removal, meet the demands to intensity.
Specifically, in ultra-high performance concrete described in the present embodiment, the mass ratio of sand and gelatinization material is 1.2:1, the mass ratio of water and gelatinization material is 0.18:1, water reducing agent consumption is 2.1% of gelatinization material quality, fiber blends amount of substance is 3% of gelatinization material quality, in described gelatinization material, cement quality percentage is 40%, and surplus is mineral admixture.
Specifically, the described fiber of the present embodiment is micro steel fiber, and water reducing agent is the polycarboxylate water-reducer of 40% solid content.
Specifically, the time of the described hydrothermal curing of the present embodiment is 72h, and curing temperature is 75 degrees Celsius, and humidity is greater than 90%.
Specifically, the described Framework Of Steel Reinforcement of the present embodiment is positioned at pipe main body 2, and protective layer thickness is not less than 10mm.
Duct test prepared by the present embodiment obtains cracking load 95.45kN/m, collapse load 145.36 kN/m.External load test method is with embodiment 1.This pipeline external pressure load has reached III grade of concrete reinforced pipe cracking load 89 KN/m of internal diameter 1000, wall thickness 100mm, the standard of collapse load 134KN/m.Mounting type is identical with embodiment 1.
embodiment 4
A ultra-high performance concrete pipeline preparation method for novel form of reinforcement, the pipeline shaping die of employing comprises steel external mold and rigid plastics internal mold, and in rigid plastics, mold materials is rigid polyvinyl chloride, thickness is 10mm, internal diameter of the pipeline 1200mm, wall thickness 80mm, comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle 1 is processed into ellipse, joins 20 vertical muscle, hoop muscle spacing 90mm;
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) remove mould, remove steel external mold and steel-made internal mould;
8) carry out hydrothermal curing after pipeline form removal, meet the demands to intensity.
Specifically, in the described ultra-high performance concrete of the present embodiment, the mass ratio of sand and gelatinization material is 1.5:1, the mass ratio of water and gelatinization material is 0.2:1, and water reducing agent consumption is 1.6% of gelatinization material quality, and fiber quality is 13% of gelatinization material quality.In described gelatinization material, cement quality percentage is 70%, and surplus is mineral admixture.
Specifically, the described fiber of the present embodiment is micro steel fiber and organic fiber mixture, and wherein organic fiber addition content is 0.1% of gelatinization material quality, and surplus is micro steel fiber, and water reducing agent is the polycarboxylate water-reducer of 40% solid content.
Specifically, the described organic fiber of the present embodiment is superhigh molecular weight polyethylene fibers.
Specifically, the time of the described hydrothermal curing of the present embodiment is 48h, and curing temperature is 85 degrees Celsius, and humidity is greater than 90%.
Specifically, the described Framework Of Steel Reinforcement of the present embodiment is positioned at pipe main body 2, and protective layer thickness is not less than 10mm.
Duct test prepared by the present embodiment obtains cracking load 120.34kN/m, collapse load 210.58kN/m.External load test method is with embodiment 1.
This pipeline external pressure load has reached III grade of concrete reinforced pipe cracking load 107 KN/m of internal diameter 1200, wall thickness 120mm, the standard of collapse load 161KN/m, and wall thickness reduces 33%, and mounting type is identical with embodiment 1.
The above, be only patent preferred embodiment of the present invention, but the protection domain of patent of the present invention is not limited thereto.Anyly be familiar with those skilled in the art in the scope disclosed in patent of the present invention, be equal to according to the technological scheme of patent of the present invention and inventive concept thereof and replace or change, all belong to the protection domain of patent of the present invention.
Claims (10)
1. the ultra-high performance concrete pipeline of a novel form of reinforcement, the Framework Of Steel Reinforcement comprising pipe main body (2) and be arranged in described pipe main body (2), it is characterized in that: described Framework Of Steel Reinforcement comprises the ring muscle (1) evenly arranged along pipe main body (2) length direction and the vertical muscle connecting each ring muscle (1), the shape of described ring muscle (1) is oval.
2. the ultra-high performance concrete pipeline of novel form of reinforcement according to claim 1, is characterized in that: described Framework Of Steel Reinforcement protective layer thickness is not less than 10mm, and pipe thickness is not less than 60mm.
3. a ultra-high performance concrete pipeline preparation method for novel form of reinforcement, is characterized in that: the pipeline shaping die of employing comprises steel external mold and internal mold, comprises step:
1) welded reinforcement skeleton, the vertical muscle of skeleton is constant, and ring muscle (1) is processed into ellipse;
2) assembly jig fix Framework Of Steel Reinforcement, is connected pumping machine with mould, and checks its sealability;
3) ultra-high performance concrete mixture is prepared;
4) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
5), after pumping, that seals mould in time closes grouting port;
6) pipeline band mold integral maintenance, treats that ultra-high performance concrete possesses strength of mould stripping and can carry out form removal;
7) mould is removed;
8) carry out hydrothermal curing or natural curing after pipeline form removal, meet the demands to intensity.
4. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 3, it is characterized in that: in described ultra-high performance concrete, the mass ratio of sand and gelatinization material is 0.8 ~ 1.5:1, the mass ratio of water and gelatinization material is 0.14 ~ 0.20:1, water reducing agent consumption is 1.6 ~ 3.0% of gelatinization material quality, fiber quality is 3% ~ 17% of gelatinization material quality, in described gelatinization material, cement quality percentage is 80% ~ 40%, and surplus is mineral admixture.
5. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 4, is characterized in that: described fiber is micro steel fiber.
6. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 4, it is characterized in that: described fiber is micro steel fiber and organic fiber mixture, wherein the addition content of organic fiber is 0.1% ~ 0.5% of gelatinization material quality, surplus is micro steel fiber, and described organic fiber is PVA fiber or superhigh molecular weight polyethylene fibers.
7. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 3, is characterized in that: the time of described hydrothermal curing is 24h-72h, and curing temperature is 75-90 degree Celsius, and humidity is greater than 90%.
8. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 3, is characterized in that: described internal mold is rigid plastics internal mold or steel-rubber combined inner mold.
9. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 8, it is characterized in that: the material of described rigid plastics internal mold is acrylic acid copolymer PVC＝polyvinyl chloride, polyethylene, PVC＝polyvinyl chloride, rigid polyvinyl chloride, and rigid plastics internal mold thickness is more than or equal to 5mm.
10. the ultra-high performance concrete pipeline preparation method of novel form of reinforcement according to claim 8, is characterized in that: when internal mold is steel-rubber combined inner mold, when removing mould in described step 7, removes steel external mold and steel-rubber combined inner mold; When internal mold is rigid plastics internal mold, when removing mould in described step 7, remove steel external mold and rigid plastics internal mold, or only remove steel external mold, retain the part of rigid plastics internal mold as pipeline.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107166106A (en) * | 2017-07-28 | 2017-09-15 | 谭颖 | A kind of construction pipe of concrete |
| WO2017194248A1 (en) * | 2016-05-10 | 2017-11-16 | Duktus (Production) Gmbh | Pipe and method for producing a pipe |
| CN109611617A (en) * | 2019-02-02 | 2019-04-12 | 张景儒 | A kind of large-diameter steel reinforced concrete drainage pipe and its production method |
| CN110397797A (en) * | 2019-08-03 | 2019-11-01 | 宁夏青龙管业股份有限公司 | Prestressing force ultra-high performance concrete pressure pipe |
| CN112661448A (en) * | 2020-12-25 | 2021-04-16 | 北京金隅混凝土有限公司 | Self-compacting jacking concrete and application method thereof |
| CN113623467A (en) * | 2020-05-07 | 2021-11-09 | 西北工业大学 | Directional reinforced pipe and preparation method thereof |
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