CN104802301A - Mould and method for preparing ultra-high performance concrete pipeline - Google Patents
Mould and method for preparing ultra-high performance concrete pipeline Download PDFInfo
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- CN104802301A CN104802301A CN201510214857.8A CN201510214857A CN104802301A CN 104802301 A CN104802301 A CN 104802301A CN 201510214857 A CN201510214857 A CN 201510214857A CN 104802301 A CN104802301 A CN 104802301A
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- performance concrete
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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
- B28B21/76—Moulds
- B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a mould for preparing an ultra-high performance concrete pipeline. The mould comprises an outer steel mould and an inner steel mould with grouting holes, wherein a steel wedge block is arranged at a joint of the inner steel mould; the steel wedge block is supported on an inner wall of the inner steel mould through a wedge block; the inner steel mould is formed by splicing two steel components and a rubber part which is connected between the two steel components; fixing devices for clamping and fastening the inner steel mould are arranged at the two ends of the inner steel mould. The invention also discloses a method for preparing the ultra-high performance concrete pipeline by adopting the mould. According to the mould, the steel mould is combined with the rubber, so that the advantages of high rigidity and capability of bearing higher pumping pressure of the steel mould are utilized, the excellent deformability of the rubber is also utilized, and the shrinkage crack phenomenon of the pipeline is effectively eliminated.
Description
Technical field
The invention belongs to plumbing building materials Design and manufacture field, specifically a kind of mould and method preparing ultra-high performance concrete pipeline.
Background technology
The mainly steel pipe, concrete duct and the plastic conduit that use in existing municipal supply and drain water system engineering.Steel pipe has good intensity, can bear higher external pressure and interior pressure, strong adaptability, but very easily corrode, and should not be used as the conveying of buried pipeline and the medium that is corrosive.Impermeabilisation, the resistance to corrosion of pipe of concrete are poor, pipe friction coefficient is low.Plastic tube wall is smooth, light weight, pollution-free without infiltration, but rigidity is poor, is easily out of shape under huge flowing pressure, and material is comparatively light, easily hydro-planing occurs in certain areas, and the regular maintenance of pipeline and emergency maintenance difficulty are increased.The each tool pluses and minuses of municipal administration water supply and sewerage pipeline, the selection of municipal water supply and sewerage pipeline tubing should consider the many factors such as technology, economy, construction, environmental protection.Domestic municipal works are still in the junior stage, and along with the birth of new material and improving constantly of construction technology, traditional piping material has been difficult to the needs of satisfied current municipal water supply and sewage work.
Ultra-high performance concrete is a kind of novel concrete based composites, is take cement as cementing agent, the hydraulic cementing materials that comprehensively variously to gather materials, additive etc. is formed, just the focus of the outer engineering material area research of Now Domestic.Ultra-high performance concrete goods have the compression strength of superelevation, can meet in municipal water supply and sewage work for flowing pressure and the needs burying soil pressure.Compared with common concrete material, the high-performance of ultra-high performance concrete can greatly reduce its consumption, plays the effect of saving material.Meanwhile, the excellent acidproof corrosion resistance that ultra-high performance concrete has also can solve the etching problem of drainage pipeline preferably.
Existing normal concrete pipeline forming technique mainly comprises centrifugal process and roller-suspending two kinds.Centrifugal process adopts centrifugal forming technology, and concrete mix high speed centrifugation is become pipe, and its advantage is that production 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 production 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 centrifugal process 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.
Pumping jacking technique is applied comparatively extensive in the comparatively complicated concrete cast-in-situ structure of body, and pumping jacking technique can make molding structure complete, not easily occurs pore, cellular defect.In pipeline forming process, owing to wanting shaping multiple different pipe joint, and interface shape mostly is complicated, therefore in the shaping middle technique having used for reference pumping jacking of superelevation durability concrete pipeline.The rigidity of steel+rubber internal mold is little, compared to the ultra-high performance concrete pipeline forming method based on steel-made internal mould, ultra-high performance concrete pipeline molding mode based on steel+rubber internal mold can adapt to ultra-high performance concrete and shrink large characteristic, overcome ultra-high performance concrete and shrink the problem of Cracking caused, be convenient to industrialization large-scale production.
Summary of the invention
The object of the present invention is to provide a kind of mould and the method for preparing ultra-high performance concrete pipeline, the high-strength performance of ultra-high performance concrete can be made full use of.Compared with normal concrete pipeline, ultra-high performance concrete pipeline significantly can reduce wall thickness, thus realizes the object of saving material, and possesses the smooth inner wall not available for general concrete pipeline, the anti-pressure ability of superelevation and resistance to corrosion.
The present invention adopts following technical scheme to realize:
A kind of mould preparing ultra-high performance concrete pipeline, described mould comprises the steel external mold, the steel-made internal mould that are provided with grouting port, a junction of described steel-made internal mould is equipped with steel voussoir, described steel voussoir supports rest on steel-made internal mould inwall by voussoir, described steel-made internal mould is spliced by the rubber section between two pieces of steel assemblies and two pieces of steel assemblies successively, and described steel-made internal mould two ends clamp the fixture be provided with for fastening steel-made internal mould.
Further, described fixture comprises by the clip of Driven by Hydraulic Cylinder and machanical fastener.
Further, be provided with rubber spacer between described clip and steel-made internal mould periphery wall, the periphery wall at described steel-made internal mould two ends is provided with the draw-in groove placing described rubber spacer and machanical fastener.
The present invention also provides a kind of method adopting above-mentioned mould to prepare ultra-high performance concrete pipeline, comprises step:
1) assembled mould, is fixed with clip, is connected by pumping machine with mould, guarantees the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir supporting removal during mould release, steel voussoir is taken out, more respectively steel-made internal mould and steel external mold is split, until mould is dismantled completely;
7) proceed hydrothermal curing or natural curing after piping articles form removal, meet the demands to concrete strength.
Further, in described ultra-high performance concrete, the mass ratio of sand and Binder Materials is 0.8 ~ 1.5:1, the mass ratio of water and Binder Materials is 0.14 ~ 0.20:1, water reducer consumption is 1.6 ~ 3.0% of Binder Materials quality, fiber quality is 3% ~ 17% of Binder Materials quality, in described Binder Materials, 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 Binder Materials quality, and surplus is micro steel fiber.
Further, described organic fiber is PVA fiber or superhigh molecular weight polyethylene fibers.
Further, described ultra-high performance concrete pipeline adopts reinforcing bar, deformed bar, fiber bar, steel wire as arrangement of reinforcement.
Further, the time of described hydrothermal curing is 24h-72h, and curing temperature is 75-90 degree Celsius, and humidity is greater than 90%.
The present invention can reduce the problem of Cracking of ultra-high performance concrete in the process of pipeline blanks and moulding and conserving, to reach the object controlling piping articles cracking, makes the ultra-high performance concrete energy applications well of high strength in pipeline.
The present invention has the following advantages relative to prior art tool:
1, ultra-high performance concrete is applied to pipeline, the pipeline good endurance produced, high-strength, wall is thin, light weight.
2, adopt pumping jacking technique, effectively solve the shaping difficult problem of ultra-high performance concrete pipeline.
3, adopt steel+rubber internal mold, effectively solve the pipeline problem of Cracking that steel-made internal mould causes, and inner wall smooth, the coefficient of roughness is little, is conducive to current and passes through.
Accompanying drawing explanation
Fig. 1 is mould generalized section of the present invention;
Fig. 2 is steel-made internal mould device for fixing end part schematic diagram of the present invention.
Be: 1-grouting port, 2-steel external mold, 3-steel voussoir that 4-voussoir supports, 5-steel-made internal mould, 6-rubber section, 7-external mold junction, 8-hydraulic cylinder, 9-clip, 10-rubber spacer shown in figure.
Detailed description of the invention
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 depicted in figs. 1 and 2, a kind of mould preparing ultra-high performance concrete pipeline, described mould comprises the steel external mold 2 and steel-made internal mould 5 that are provided with grouting port 1, a junction of described steel-made internal mould 5 is equipped with steel voussoir 3, its symmetrical centre is pointed in the external mold junction 7 of steel external mold 2, described steel voussoir 3 supports 4 rests on steel-made internal mould 5 inwall by voussoir, described steel-made internal mould 5 is spliced by the rubber section 6 between two pieces of steel assemblies and two pieces of steel assemblies, the clamping of described steel-made internal mould 5 two ends is provided with fixture, described fixture comprises the clip 9 and machanical fastener that are driven by hydraulic cylinder 8, rubber spacer 10 is provided with between described clip 9 and steel-made internal mould 5 periphery wall, the outer wall of steel-made internal mould 5 is also provided with the draw-in groove placing described rubber spacer 10 and machanical fastener.
embodiment
2
Adopt described mould to prepare a method for ultra-high performance concrete pipeline, comprise step:
1) assembled mould, is fixed with clip 9, is connected by pumping machine with mould, guarantees the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir is supported 4 during mould release to remove, steel voussoir 3 is taken out, more respectively steel-made internal mould 5 and steel external mold 2 are split, until mould is dismantled completely;
7) proceed hydrothermal curing or natural curing after piping articles form removal, meet the demands to concrete strength.
Specifically, in ultra-high performance concrete described in the present embodiment, the mass ratio of sand and Binder Materials is 0.8:1, the mass ratio of water and Binder Materials is 0.14:1, water reducer consumption is 3.0% of Binder Materials quality, fiber quality is 17% of Binder Materials quality, in described Binder Materials, cement quality percentage is 80%, and surplus is mineral admixture.
Specifically, fiber described in the present embodiment is micro steel fiber, and water reducer is the polycarboxylate water-reducer of 40% solid content.
Specifically, the present embodiment carries out hydrothermal curing by steam, and the time of described hydrothermal curing is 24h, and curing temperature is 90 degrees Celsius, and humidity is greater than 90%.
Internal diameter of the pipeline 400mm prepared by the present embodiment, wall thickness 30mm, carry out external load test according to GBT 16752-2006 " Test methods of concrete and reinforced concrete drainage and sewer pipes ", test load at first crack is 42.10kN/m, failing load is 47.15kN/m.This pipeline external pressure load has reached II grade of concrete reinforced pipe cracking load 27kN/m of wall thickness 40mm, the standard of failing load 41kN/m, and its intensity compared with the concrete duct of joining reinforcing bar, and can reduce the wall thickness of 25%.
embodiment
3
Adopt described mould to prepare a method for ultra-high performance concrete pipeline, comprise step:
1) assembled mould, is fixed with clip 9, is connected by pumping machine with mould, guarantees the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir is supported 4 during mould release to remove, steel voussoir 3 is taken out, more respectively steel-made internal mould 5 and steel external mold 2 are split, until mould is dismantled completely;
Specifically, in the present embodiment specifically, in the described ultra-high performance concrete of the present embodiment, the mass ratio of sand and Binder Materials is 1.0:1, the mass ratio of water and Binder Materials is 0.16:1, water reducer consumption is 2.5% of Binder Materials quality, and fiber quality is 10% of Binder Materials quality.In described Binder Materials, cement quality percentage is 70%, and surplus is mineral admixture.
Specifically, fiber described in the present embodiment is micro steel fiber, and water reducer is the polycarboxylate water-reducer of 40% solid content.
Specifically, the present embodiment carries out hydrothermal curing by steam, and the time of described hydrothermal curing is 72h, and curing temperature is 75 degrees Celsius, and humidity is greater than 90%.
Specifically, the pipeline of ultra-high performance concrete described in the present embodiment join 6 pre-stressed longitudinal reinforced, hoop muscle spacing 150mm.
Internal diameter of the pipeline 600mm prepared by the present embodiment, wall thickness 35mm, test load at first crack is 62.28kN/m, failing load is 82.51 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 53 kN/m of wall thickness 60mm, the standard of failing load 80kN/m.The strength ratio ordinary reinforced concrete pipeline of the ultra-high performance concrete pipeline after arrangement of reinforcement significantly improves, inner-walls of duct is also smooth than ordinary reinforced concrete pipeline, and can reduce the wall thickness of 41.7%, the water supply and sewerage pipeline that Performance Ratio conventional concrete makes is excellent.
embodiment
4
Adopt described mould to prepare a method for ultra-high performance concrete pipeline, comprise step:
1) assembled mould, is fixed with clip 9, is connected by pumping machine with mould, guarantees the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir is supported 4 during mould release to remove, steel voussoir 3 is taken out, more respectively steel-made internal mould 5 and steel external mold 2 are split, until mould is dismantled completely;
Specifically, in the described ultra-high performance concrete of the present embodiment, the mass ratio of sand and Binder Materials is 1.2:1, the mass ratio of water and Binder Materials is 0.18:1, water reducer consumption is 2.1% of Binder Materials quality, fiber quality is 3% of Binder Materials quality, in described Binder Materials, cement quality percentage is 40%, 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 Binder Materials quality, and surplus is micro steel fiber.
Specifically, the described organic fiber of the present embodiment is PVA fiber, and water reducer is the polycarboxylate water-reducer of 40% solid content.
Specifically, 6 longitudinal fiber muscle joined by the pipeline of ultra-high performance concrete described in the present embodiment, hoop fiber bar spacing 240mm.
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%.
Internal diameter of the pipeline 400mm prepared by the present embodiment, wall thickness 30mm, test load at first crack is 42.17kN/m, failing load is 48.51 kN/m.External load test method is with embodiment 1.This pipeline external pressure load has reached II grade of concrete reinforced pipe cracking load 27kN/m of wall thickness 40mm, the standard of failing load 41kN/m, and the wall thickness that can reduce by 25%.
embodiment
5
Adopt described mould to prepare a method for ultra-high performance concrete pipeline, comprise step:
1) assembled mould, is fixed with clip 9, is connected by pumping machine with mould, guarantees the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir is supported 4 during mould release to remove, steel voussoir 3 is taken out, more respectively steel-made internal mould 5 and steel external mold 2 are split, until mould is dismantled completely;
Specifically, in the described ultra-high performance concrete of the present embodiment, the mass ratio of sand and Binder Materials is 1.5:1, the mass ratio of water and Binder Materials is 0.20:1, water reducer consumption is 1.6% of Binder Materials quality, fiber quality is 13% of Binder Materials quality, in described Binder Materials, 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 is 0.1% of Binder Materials quality, and all the other are micro steel fiber.
Specifically, the organic fiber described in the present embodiment is superhigh molecular weight polyethylene fibers, and water reducer is the polycarboxylate water-reducer of 40% solid content.
Specifically, the pipeline of ultra-high performance concrete described in the present embodiment adopts steel wire as arrangement of reinforcement.
Internal diameter of the pipeline 400mm prepared by the present embodiment, wall thickness 30mm, test load at first crack is 38.74kN/m, failing load is 43.28kN/m.External load test method is with embodiment 1.Pipeline external pressure load prepared by the present embodiment has reached II grade of concrete reinforced pipe cracking load 27 kN/m of wall thickness 40mm, the standard of failing load 41kN/m, and the wall thickness reducing 25%.
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 technical 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. prepare the mould of ultra-high performance concrete pipeline for one kind, it is characterized in that: described mould comprises the steel external mold (2) being provided with grouting port (1), steel-made internal mould (5), a junction of described steel-made internal mould (5) is equipped with steel voussoir (3), described steel voussoir (3) supports (4) rest on steel-made internal mould (5) inwall by voussoir, described steel-made internal mould (5) is spliced by the rubber section (6) between two pieces of steel assemblies and two pieces of steel assemblies successively, described steel-made internal mould (5) two ends clamp the fixture be provided with for fastening steel-made internal mould (5).
2. the mould preparing ultra-high performance concrete pipeline according to claim 1, is characterized in that: described fixture comprises the clip (9) and machanical fastener that are driven by hydraulic cylinder (8).
3. the mould preparing ultra-high performance concrete pipeline according to claim 2, it is characterized in that: be provided with rubber spacer (10) between described clip (9) and steel-made internal mould (5) periphery wall, the periphery wall at described steel-made internal mould (5) two ends is provided with the draw-in groove placing described rubber spacer (10) and machanical fastener.
4. adopt mould as described in any one of Claims 1-4 to prepare a method for ultra-high performance concrete pipeline, comprise step:
1) assembled mould, is fixed with clip (9), is connected by pumping machine with mould, guarantee the sealing of mould;
2) ultra-high performance concrete mixture is prepared;
3) ultra-high performance concrete mixture is added in pumping machine, adopt pumping jacking technique formed pipe;
4) after pumping, the grouting port of timely closed mould;
5) pipeline connects mold integral maintenance, until ultra-high performance concrete possesses strength of mould stripping can carry out mould release;
6) first voussoir is supported (4) during mould release to remove, steel voussoir (3) is taken out, more respectively steel-made internal mould (5) and steel external mold (2) are split, until mould is dismantled completely;
7) proceed hydrothermal curing or natural curing after piping articles form removal, meet the demands to concrete strength.
5. the method preparing ultra-high performance concrete pipeline according to claim 4, it is characterized in that: in described ultra-high performance concrete, the mass ratio of sand and Binder Materials is 0.8 ~ 1.5:1, the mass ratio of water and Binder Materials is 0.14 ~ 0.20:1, water reducer consumption is 1.6 ~ 3.0% of Binder Materials quality, fiber quality is 3% ~ 17% of Binder Materials quality, in described Binder Materials, cement quality percentage is 80% ~ 40%, and surplus is mineral admixture.
6. the method preparing ultra-high performance concrete pipeline according to claim 5, is characterized in that: described fiber is micro steel fiber.
7. the method preparing ultra-high performance concrete pipeline according to claim 5, 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 Binder Materials quality, and surplus is micro steel fiber.
8. the method preparing ultra-high performance concrete pipeline according to claim 7, is characterized in that: described organic fiber is PVA fiber or superhigh molecular weight polyethylene fibers.
9. the method preparing ultra-high performance concrete pipeline according to claim 4, is characterized in that: described ultra-high performance concrete pipeline adopts reinforcing bar, deformed bar, fiber bar, steel wire as arrangement of reinforcement.
10. the method preparing ultra-high performance concrete pipeline according to claim 4, 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%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106049759A (en) * | 2016-07-29 | 2016-10-26 | 华南理工大学 | Cylindrical ultra-high performance concrete permanent formwork and preparation method thereof |
| CN106116360A (en) * | 2016-06-30 | 2016-11-16 | 山东爱地高分子材料有限公司 | UHMWPE fiber cement-based high ductibility composite and preparation method thereof |
| CN108798190A (en) * | 2018-08-09 | 2018-11-13 | 江西荣仁电力器材有限公司 | Electric pole, mold |
| CN111636539A (en) * | 2020-06-09 | 2020-09-08 | 湘潭大学 | Assembled longitudinal and transverse guide drainage system for refuse landfill and construction method thereof |
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| CN112628482A (en) * | 2020-12-22 | 2021-04-09 | 安徽华奇管业有限公司 | Steel socket type PP inner wall reinforced concrete pipe |
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| CN108798190A (en) * | 2018-08-09 | 2018-11-13 | 江西荣仁电力器材有限公司 | Electric pole, mold |
| CN108798190B (en) * | 2018-08-09 | 2023-12-05 | 江西荣仁电力器材有限公司 | Telegraph pole and mould |
| CN111663572A (en) * | 2020-06-08 | 2020-09-15 | 湘潭大学 | Composite liner structure for refuse landfill and construction method thereof |
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