CN108585740A - A kind of high-strength waterproof underground pipe culvert and preparation method thereof - Google Patents
A kind of high-strength waterproof underground pipe culvert and preparation method thereof Download PDFInfo
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- CN108585740A CN108585740A CN201810447512.0A CN201810447512A CN108585740A CN 108585740 A CN108585740 A CN 108585740A CN 201810447512 A CN201810447512 A CN 201810447512A CN 108585740 A CN108585740 A CN 108585740A
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- pipe culvert
- underground pipe
- strength waterproof
- carbon fiber
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Classifications
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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
- C04B28/18—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 mixtures of the silica-lime type
- C04B28/186—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step
- C04B28/188—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step the Ca-silicates being present in the starting mixture
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1033—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The present invention provides a kind of high-strength waterproof underground pipe culvert and preparation method thereof, is related to concrete pipe culvert technical field, high-strength waterproof underground of the present invention pipe culvert is made of following raw material：Modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide, toughener, water.High-strength waterproof underground pipe culvert mechanical property of the present invention is good, tension, High anti bending strength, and inner wall visible crack caused by pipe culvert can be inhibited to shrink, the impervious and cracking resistance of the pipe culvert is good, and durability is good, and service life is long；The dispersibility of modified carbon fiber in the base uniformly, makes pipe culvert obtained have significant raising in terms of wear-resisting property, and maintain excellent mechanical property.
Description
Technical field
The present invention relates to concrete pipe culvert technical fields, and in particular to a kind of high-strength waterproof underground pipe culvert and its preparation side
Method.
Background technology
Culvert refers to the culvert that barrel is built with reinforced concrete box shaped tube coupling.Underground pipe culvert refer to one kind be embedded in earth's surface with
Under pipeline, formed with steel bar concrete casting, be commonly called as pipe of cement, the conduit pipe being typically used as under confferdam and dyke-dam.Common
Pipe culvert is made of cement concrete, and cement concrete is a kind of typical fragile material, and bending tensile strength is low with deformability,
Antifatigue and external erosiveness is weaker, using pipe culvert made from cement concrete, inside have more gap structure, manage
Contain the gap structure that it is internal after being chronically in moist environment will increase, or even crack occurs, in actual use,
Since pipe culvert is typically buried in underground, it can be under this environment, can lead for a long time by various acid or alkalinity liquid corrosion
It causes the mechanical strength straight line of pipe culvert to decline, and then underground pipe culvert is caused to seep water.Therefore, intensity, the waterproof buried pipe contained
Performance has prodigious requirement, and in the prior art, the water resistance of underground pipe culvert is poor.
Currently, production concrete pipe culvert is to use Portland cement by a certain percentage for cementitious material and sand, stone
Equal coarse-fine aggregates, add suitable water-reducing agent, add water and stir into normal concrete in blender, the pipe of concrete of production,
Cylinder concrete pipe, since normal concrete is there are certain brittleness, compactness and flexibility and under by outer force effect
Impact resistance is poor, easily generates interior parietal suture, influences pipe of concrete, the durability of cylinder concrete pipe, impermeability and cracking resistance
Performance.
Invention content
For technical problem in the prior art, the present invention provides a kind of high-strength waterproof underground pipe culvert and preparation method thereof.
In order to achieve the above object, technical scheme of the present invention is achieved by the following technical programs：
A kind of high-strength waterproof underground pipe culvert, is made of the raw material of following parts by weight：10-20 parts of modified carbon fiber, silicon ash
30-60 parts of stone, 8-16 parts of mineral fibres, 15-35 parts of barium sulfate, 30-50 parts of talcum powder, 3-10 parts of sulfosalicylic acid, dimethyl
3-7 parts of formamide, 2-5 parts of toughener, 80-180 parts of water.
Preferably, a kind of high-strength waterproof underground pipe culvert is made of the raw material of following parts by weight：Modified carbon fiber 13-
18 parts, 40-56 parts of wollastonite, 10-14 parts of mineral fibres, 20-30 parts of barium sulfate, 36-45 parts of talcum powder, sulfosalicylic acid 5-8
Part, 4-6 parts of dimethylformamide, 3-4 parts of toughener, 100-160 parts of water.
Preferably, a kind of high-strength waterproof underground pipe culvert is made of the raw material of following parts by weight：Modified carbon fiber 15
Part, 45 parts of wollastonite, 12 parts of mineral fibres, 25 parts of barium sulfate, 40 parts of talcum powder, 6 parts of sulfosalicylic acid, dimethylformamide 5
Part, 3.5 parts of toughener, 130 parts of water.
Preferably, the talcum powder, barium sulfate grain size be 2000-3000 mesh.
Preferably, the mineral fibres be the magnesium sulfate crystal whisker of a diameter of 10-16um, silica whisker, aluminium borate whisker,
At least one of glass fibre.
Preferably, the modified carbon fiber is carbon fiber after polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid impregnation
Obtained modified carbon fiber.
Preferably, the polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid is the polytetrafluoro that average grain diameter is 0.4-0.5 μm
Vinyl and polyvinylidene fluoride resin, according to mass ratio 1：The colloidal solution that 1 mix suspending is formed in liquid water, and colloid
The viscosity of solution is 0.04Pas, a concentration of 55wt%, pH value 9-10.
Preferably, the polytetrafluoroethylene (PTFE) relative molecular weight is 100-120 ten thousand, crystallinity 85-90%；It is described to gather inclined fluorine
Ethylene relative molecular weight is 80-100 ten thousand, moisture content≤0.05%.
Preferably, the toughener be ethylene propylene diene rubber, ethylene octene copolymer elastomer, in butadiene rubber at least
It is a kind of.
A kind of preparation method of high-strength waterproof underground pipe culvert, includes the following steps：Each raw material is weighed according to parts by weight；
By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide, toughener, water
It is added in the blender that mixing speed is 100-200r/min after stirring 10-15min, is added, stirs evenly, obtain mixture；
Mixture is put into mold, carry out cloth tensioning, apply prestressing force be placed in steam-cured pond under normal pressure, it is quiet stop 2-4h after,
It is warming up to 65-75 DEG C with 20-23 DEG C/h, then constant temperature 3-5h is cooled to room temperature, form removal in 1-2h, you can.
A kind of high durability concrete component of present invention offer and preparation method thereof, advantage is compared with prior art：
High-strength waterproof underground pipe culvert mechanical property of the present invention is good, tension, High anti bending strength, and pipe culvert contraction can be inhibited to cause
Inner wall visible crack, the impervious and cracking resistance of the pipe culvert is good, and durability is good, and service life is long；Modified carbon fiber is to utilize
Polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid carries out impregnation to carbon fiber and obtains, and carbon fiber fiber in dipping process soaks
Stain is efficient, and dipping is complete, and fiber is not in disconnected fine situation, can obtain the preferable modified carbon fiber of performance, greatly change
The dispersibility of carbon fiber in the base has been apt to it, and pipe culvert obtained is made to have significant raising in terms of wear-resisting property, and has kept
Excellent mechanical property.
The preparation method of high-strength waterproof underground of the present invention pipe culvert is simple, and modified carbon fiber, wollastonite, mine are added in raw material
Fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide, toughener, synergistic effect, the addition of fiber to manage
Contain with preferable intensity, high-durability, pipe culvert obtained either in mild environment, or in the environment of severe cold
With excellent mechanical property.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
The every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of high-strength waterproof underground pipe culvert of the present embodiment is made of the raw material of following parts by weight：10 parts of modified carbon fiber,
30 parts of wollastonite, 15 parts of barium sulfate, 30 parts of talcum powder, 3 parts of sulfosalicylic acid, 3 parts of dimethylformamide, increases 8 parts of mineral fibres
Tough dose 2 parts, 80 parts of water；
Wherein, talcum powder, barium sulfate grain size be 2000 mesh；Mineral fibres is the magnesium sulfate crystal whisker of a diameter of 10um；Change
Property carbon fiber be the modified carbon fiber that is obtained after polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid impregnation of carbon fiber, poly- four
Vinyl fluoride/Kynoar dispersion liquid is the polyflon and polyvinylidene fluoride resin that average grain diameter is 0.4 μm, is pressed
According to mass ratio 1：The colloidal solution that 1 mix suspending is formed in liquid water, and the viscosity of colloidal solution is 0.04Pas, a concentration of
55wt%, pH value 9；Polytetrafluoroethylene (PTFE) relative molecular weight is 1,000,000, crystallinity 85%；Kynoar relative molecular weight
It is 800,000, moisture content≤0.05%；Toughener is ethylene propylene diene rubber；
A kind of preparation method of high-strength waterproof underground pipe culvert of the present embodiment, includes the following steps：It is weighed according to parts by weight
Each raw material；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide,
Toughener, water are added in the blender that mixing speed is 100r/min after stirring 10min, are added, stir evenly, mixed
Object；Mixture is put into mold, carry out cloth tensioning, apply prestressing force be placed in steam-cured pond under normal pressure, it is quiet stop 2h after,
65 DEG C are warming up to 20 DEG C/h, then constant temperature 3h is cooled to room temperature, form removal in 1h, you can.
Embodiment 2：
A kind of high-strength waterproof underground pipe culvert of the present embodiment is made of the raw material of following parts by weight：20 parts of modified carbon fiber,
60 parts of wollastonite, 16 parts of mineral fibres, 35 parts of barium sulfate, 50 parts of talcum powder, 10 parts of sulfosalicylic acid, 7 parts of dimethylformamide,
5 parts of toughener, 180 parts of water；
Wherein, talcum powder, barium sulfate grain size be 3000 mesh；Mineral fibres is the aluminium borate whisker of a diameter of 16um；Change
Property carbon fiber be the modified carbon fiber that is obtained after polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid impregnation of carbon fiber, poly- four
Vinyl fluoride/Kynoar dispersion liquid is the polyflon and polyvinylidene fluoride resin that average grain diameter is 0.5 μm, is pressed
According to mass ratio 1：The colloidal solution that 1 mix suspending is formed in liquid water, and the viscosity of colloidal solution is 0.04Pas, a concentration of
55wt%, pH value 10；Polytetrafluoroethylene (PTFE) relative molecular weight is 1,200,000, crystallinity 85-90%；Opposite point of Kynoar
Son amount is 1,000,000, moisture content≤0.05%；Toughener is ethylene octene copolymer elastomer；
A kind of preparation method of high-strength waterproof underground pipe culvert of the present embodiment, includes the following steps：It is weighed according to parts by weight
Each raw material；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide,
Toughener, water are added in the blender that mixing speed is 200r/min after stirring 15min, are added, stir evenly, mixed
Object；Mixture is put into mold, carry out cloth tensioning, apply prestressing force be placed in steam-cured pond under normal pressure, it is quiet stop 4h after,
75 DEG C are warming up to 23 DEG C/h, then constant temperature 5h is cooled to room temperature, form removal in 2h, you can.
Embodiment 3：
A kind of high-strength waterproof underground pipe culvert of the present embodiment is made of the raw material of following parts by weight：15 parts of modified carbon fiber,
45 parts of wollastonite, 12 parts of mineral fibres, 25 parts of barium sulfate, 40 parts of talcum powder, 6 parts of sulfosalicylic acid, 5 parts of dimethylformamide,
3.5 parts of toughener, 130 parts of water；
Wherein, talcum powder, barium sulfate grain size be 2500 mesh；Mineral fibres is magnesium sulfate crystal whisker, the oxygen of a diameter of 13um
SiClx whisker, aluminium borate whisker, glass fibre mix；Modified carbon fiber is carbon fiber through polytetrafluoroethylene (PTFE)/polyvinylidene fluoride
The modified carbon fiber obtained after alkene dispersion liquid impregnation, polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid are for average grain diameter
0.4-0.5 μm of polyflon and polyvinylidene fluoride resin, according to mass ratio 1：1 mix suspending is in liquid
The colloidal solution formed in water, and the viscosity of colloidal solution is 0.04Pas, a concentration of 55wt%, pH value 10；Polytetrafluoroethylene (PTFE)
Relative molecular weight is 1,100,000, crystallinity 88%；Kynoar relative molecular weight is 900,000, moisture content≤0.05%；Toughening
Agent is ethylene propylene diene rubber, ethylene octene copolymer elastomer, butadiene rubber mix；
A kind of preparation method of high-strength waterproof underground pipe culvert of the present embodiment, includes the following steps：It is weighed according to parts by weight
Each raw material；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide,
Toughener, water are added in the blender that mixing speed is 150r/min after stirring 13min, are added, stir evenly, mixed
Object；Mixture is put into mold, carry out cloth tensioning, apply prestressing force be placed in steam-cured pond under normal pressure, it is quiet stop 3h after,
70 DEG C are warming up to 22 DEG C/h, then constant temperature 4h is cooled to room temperature, form removal in 1.5h, you can.
Embodiment 4：
A kind of high-strength waterproof underground pipe culvert of the present embodiment is made of the raw material of following parts by weight：13 parts of modified carbon fiber,
40 parts of wollastonite, 10 parts of mineral fibres, 20 parts of barium sulfate, 36 parts of talcum powder, 5 parts of sulfosalicylic acid, 4 parts of dimethylformamide,
3 parts of toughener, 100 parts of water；
Wherein, talcum powder, barium sulfate grain size be 2200 mesh；Mineral fibres is magnesium sulfate crystal whisker, the oxygen of a diameter of 12um
SiClx whisker, glass fibre mix；Modified carbon fiber is that carbon fiber is impregnated through polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid
The modified carbon fiber obtained after processing, polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid are the polytetrafluoro that average grain diameter is 0.4 μm
Vinyl and polyvinylidene fluoride resin, according to mass ratio 1：The colloidal solution that 1 mix suspending is formed in liquid water, and colloid
The viscosity of solution is 0.04Pas, a concentration of 55wt%, pH value 9；Polytetrafluoroethylene (PTFE) relative molecular weight is 1,000,000, and crystallinity is
86%；Kynoar relative molecular weight is 850,000, moisture content≤0.05%；Toughener is ethylene propylene diene rubber, ethylene octene
Copolymer elastomer, butadiene rubber mix；
A kind of preparation method of high-strength waterproof underground pipe culvert of the present embodiment, includes the following steps：It is weighed according to parts by weight
Each raw material；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide,
Toughener, water are added in the blender that mixing speed is 120r/min after stirring 11min, are added, stir evenly, mixed
Object；Mixture is put into mold, cloth tensioning is carried out, applies prestressing force and is placed in steam-cured pond under normal pressure, it is quiet to stop 2.5h
Afterwards, 68 DEG C are warming up to 21 DEG C/h, then constant temperature 3.5h is cooled to room temperature, form removal in 1.2h, you can.
Embodiment 5：
A kind of high-strength waterproof underground pipe culvert of the present embodiment is made of the raw material of following parts by weight：18 parts of modified carbon fiber,
56 parts of wollastonite, 14 parts of mineral fibres, 30 parts of barium sulfate, 45 parts of talcum powder, 8 parts of sulfosalicylic acid, 6 parts of dimethylformamide,
4 parts of toughener, 160 parts of water；
Wherein, talcum powder, barium sulfate grain size be 2800 mesh；Mineral fibres is magnesium sulfate crystal whisker, the oxygen of a diameter of 14um
SiClx whisker, aluminium borate whisker, glass fibre mix；Modified carbon fiber is carbon fiber through polytetrafluoroethylene (PTFE)/polyvinylidene fluoride
The modified carbon fiber obtained after alkene dispersion liquid impregnation, polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid are for average grain diameter
0.5 μm of polyflon and polyvinylidene fluoride resin, according to mass ratio 1：The glue that 1 mix suspending is formed in liquid water
Liquid solution, and the viscosity of colloidal solution is 0.04Pas, a concentration of 55wt%, pH value 10；Polytetrafluoroethylene (PTFE) relative molecular weight is
1200000, crystallinity 88%；Kynoar relative molecular weight is 1,000,000, moisture content≤0.05%；Toughener is ternary second
Third rubber, ethylene octene copolymer elastomer, butadiene rubber mix；
A kind of preparation method of high-strength waterproof underground pipe culvert of the present embodiment, includes the following steps：It is weighed according to parts by weight
Each raw material；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum powder, sulfosalicylic acid, dimethylformamide,
Toughener, water are added in the blender that mixing speed is 180r/min after stirring 14min, are added, stir evenly, mixed
Object；Mixture is put into mold, cloth tensioning is carried out, applies prestressing force and is placed in steam-cured pond under normal pressure, it is quiet to stop 3.5h
Afterwards, 72 DEG C are warming up to 22 DEG C/h, then constant temperature 4h is cooled to room temperature, form removal in 1.8h, you can.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although ginseng
According to previous embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；And
These modifications or replacements, the spirit and model of various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of high-strength waterproof underground pipe culvert, which is characterized in that a kind of high-strength waterproof underground pipe culvert is by following weight
The raw material of part is made：10-20 parts of modified carbon fiber, 8-16 parts of mineral fibres, 15-35 parts of barium sulfate, is slided 30-60 parts of wollastonite
30-50 parts of mountain flour, 3-10 parts of sulfosalicylic acid, 3-7 parts of dimethylformamide, 2-5 parts of toughener, 80-180 parts of water.
2. a kind of high-strength waterproof underground pipe culvert according to claim 1, which is characterized in that a kind of high-strength waterproof
Underground pipe culvert is made of the raw material of following parts by weight：13-18 parts of modified carbon fiber, 40-56 parts of wollastonite, mineral fibres 10-14
Part, 20-30 parts of barium sulfate, 36-45 parts of talcum powder, 5-8 parts of sulfosalicylic acid, 4-6 parts of dimethylformamide, 3-4 parts of toughener,
100-160 parts of water.
3. a kind of high-strength waterproof underground pipe culvert according to claim 1, which is characterized in that a kind of high-strength waterproof
Underground pipe culvert is made of the raw material of following parts by weight：15 parts of modified carbon fiber, 45 parts of wollastonite, 12 parts of mineral fibres, barium sulfate
25 parts, 40 parts of talcum powder, 6 parts of sulfosalicylic acid, 5 parts of dimethylformamide, 3.5 parts of toughener, 130 parts of water.
4. a kind of high-strength waterproof underground pipe culvert according to claim 1 or 2 or 3, which is characterized in that the talcum powder,
The grain size of barium sulfate is 2000-3000 mesh.
5. a kind of high-strength waterproof underground pipe culvert according to claim 1 or 2 or 3, which is characterized in that the mineral fibres
For at least one of the magnesium sulfate crystal whisker of a diameter of 10-16um, silica whisker, aluminium borate whisker, glass fibre.
6. a kind of high-strength waterproof underground pipe culvert according to claim 1 or 2 or 3, which is characterized in that the modified carbon fiber
Dimension is the modified carbon fiber that carbon fiber obtains after polytetrafluoroethylene (PTFE)/Kynoar dispersion liquid impregnation.
7. a kind of high-strength waterproof underground pipe culvert according to claim 6, which is characterized in that the polytetrafluoroethylene (PTFE)/poly-
Vinylidene dispersion liquid is the polyflon and polyvinylidene fluoride resin that average grain diameter is 0.4-0.5 μm, according to matter
Measure ratio 1：The colloidal solution that 1 mix suspending is formed in liquid water, and the viscosity of colloidal solution is 0.04Pas, a concentration of
55wt%, pH value 9-10.
8. a kind of high-strength waterproof underground pipe culvert according to claim 6, which is characterized in that the polytetrafluoroethylene (PTFE) is opposite
Molecular weight is 100-120 ten thousand, crystallinity 85-90%；The Kynoar relative molecular weight be 80-100 ten thousand, moisture content≤
0.05%.
9. a kind of high-strength waterproof underground pipe culvert according to claim 1 or 2 or 3, which is characterized in that the toughener is
At least one of ethylene propylene diene rubber, ethylene octene copolymer elastomer, butadiene rubber.
10. a kind of preparation method of such as claim 1-9 any one of them high-strength waterproofs underground pipe culvert, which is characterized in that
Include the following steps：Each raw material is weighed according to parts by weight；By modified carbon fiber, wollastonite, mineral fibres, barium sulfate, talcum
Powder, sulfosalicylic acid, dimethylformamide, toughener, water are added in the blender that mixing speed is 100-200r/min and stir
After 10-15min, it is added, stirs evenly, obtain mixture；Mixture is put into mold, cloth tensioning is carried out, application is answered in advance
Power is placed in steam-cured pond under normal pressure, it is quiet stop 2-4h after, be warming up to 65-75 DEG C, constant temperature 3-5h with 20-23 DEG C/h, then
Room temperature, form removal are cooled in 1-2h, you can.
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| CN105236844A (en) * | 2015-08-24 | 2016-01-13 | 安徽砼宇特构科技有限公司 | Spliced-type underground pipe culvert and preparation method thereof |
| CN105754266A (en) * | 2014-12-15 | 2016-07-13 | 天津滨浦生产力促进有限公司 | Preparation method of carbon fiber reinforced polytetrafluoroethylene composite material |
| CN105819768A (en) * | 2016-03-24 | 2016-08-03 | 安徽砼宇特构科技有限公司 | Waterproof underground pipe culvert and preparing method thereof |
| CN105906252A (en) * | 2016-04-15 | 2016-08-31 | 安徽砼宇特构科技有限公司 | Seepage prevention underground pipe culvert and preparation method thereof |
| CN106316267A (en) * | 2016-08-26 | 2017-01-11 | 蚌埠市淮上区昊天新型建材厂 | Preparation method of waterproof high tensile steam-pressing fly ash brick |
| CN107056193A (en) * | 2017-06-03 | 2017-08-18 | 合肥慧林建材有限公司 | A kind of antiseepage resistance to compression Ecological Road pipe culvert and preparation method thereof |
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2018
- 2018-05-11 CN CN201810447512.0A patent/CN108585740A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597765A (en) * | 2004-08-12 | 2005-03-23 | 上海交通大学 | Preparation process for composite of rare earth modified carbon-fibre/polytetrafluoroethylene |
| CN105754266A (en) * | 2014-12-15 | 2016-07-13 | 天津滨浦生产力促进有限公司 | Preparation method of carbon fiber reinforced polytetrafluoroethylene composite material |
| CN105236844A (en) * | 2015-08-24 | 2016-01-13 | 安徽砼宇特构科技有限公司 | Spliced-type underground pipe culvert and preparation method thereof |
| CN105819768A (en) * | 2016-03-24 | 2016-08-03 | 安徽砼宇特构科技有限公司 | Waterproof underground pipe culvert and preparing method thereof |
| CN105906252A (en) * | 2016-04-15 | 2016-08-31 | 安徽砼宇特构科技有限公司 | Seepage prevention underground pipe culvert and preparation method thereof |
| CN106316267A (en) * | 2016-08-26 | 2017-01-11 | 蚌埠市淮上区昊天新型建材厂 | Preparation method of waterproof high tensile steam-pressing fly ash brick |
| CN107056193A (en) * | 2017-06-03 | 2017-08-18 | 合肥慧林建材有限公司 | A kind of antiseepage resistance to compression Ecological Road pipe culvert and preparation method thereof |
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