CN107522440A - A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment - Google Patents
A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment Download PDFInfo
- Publication number
- CN107522440A CN107522440A CN201710731380.XA CN201710731380A CN107522440A CN 107522440 A CN107522440 A CN 107522440A CN 201710731380 A CN201710731380 A CN 201710731380A CN 107522440 A CN107522440 A CN 107522440A
- Authority
- CN
- China
- Prior art keywords
- parts
- concrete
- water
- weight
- subway segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 111
- 239000000203 mixture Substances 0.000 claims abstract description 73
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 40
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 230000008961 swelling Effects 0.000 claims abstract description 34
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 239000004575 stone Substances 0.000 claims abstract description 23
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 19
- 229920000728 polyester Polymers 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 18
- 150000002790 naphthalenes Chemical class 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 12
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims description 18
- 239000004067 bulking agent Substances 0.000 claims description 10
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 9
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 8
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 8
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 7
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 7
- 235000011128 aluminium sulphate Nutrition 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 claims description 5
- 230000003467 diminishing effect Effects 0.000 claims description 4
- 239000010883 coal ash Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- PSDYQSWHANEKRV-UHFFFAOYSA-N [S]N Chemical compound [S]N PSDYQSWHANEKRV-UHFFFAOYSA-N 0.000 claims 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000052 comparative effect Effects 0.000 description 31
- 238000012360 testing method Methods 0.000 description 16
- 239000000523 sample Substances 0.000 description 12
- 239000013068 control sample Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 6
- -1 sulphur Aluminate Chemical class 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 150000007942 carboxylates Chemical class 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/065—Polyacrylates; Polymethacrylates
- C04B16/0658—Polyacrylonitrile
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0683—Polyesters, e.g. polylactides
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/086—Methods of making concrete lining segments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of manufacturing process for being used to pour the concrete and subway segment of subway segment, wherein, it is a kind of to be used to pour the concrete of subway segment, include the component of following parts by weight：325 355 parts of cement；Middle 680 705 parts of sand；1,100 1145 parts of stone；138 152 parts of water；78 88 parts of flyash；26 parts of water reducer；38 parts of swelling agent；35 parts of retarder；38 parts of fibre blend；25 parts of aqueous epoxy resins；Water reducer includes at least two in polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, Amino-sulfonic Acid-based Water-reducer；Fibre blend includes at least two in steel fibre, polyacrylonitrile fibre, polyester fiber.Concrete in the present invention has the good slump, and has higher early strength.
Description
Technical field
The present invention relates to Shield Method Tunnel for Metro technical field of construction, more specifically, it relates to which a kind of be used to pour ground iron pipe
The concrete of piece and the manufacturing process of subway segment.
Background technology
At present, most of known city underground is constructed using shield method execution.Shield construction is existed using machinery
Underground drills through a circular space, then forms a circular sky with reinforced concrete segment is assembled in the afterbody of Shield-type machinery
Between, this circular space is exactly the running space of underground railway track.
The slump is primarily referred to as the plasticizing capacity and pumpable performance of concrete, is to weigh its degree with a quantizating index
The height of (soffening and pumpable performance), for judging that can construction be normally carried out.
The excessive concrete disintegration of slump, water-cement ratio change are influential greatly on structure；If slump is too small, concrete
Workability is bad, poor fluidity pumping difficulties.And for the angle of construction, the early strength of the slump and concrete has necessarily
Relation, pour into a mould concrete when the slump it is bigger, then the early strength of concrete is poorer；Conversely, the slump is smaller, concrete
Early strength it is higher.Concrete for pouring subway segment has higher requirement to early strength, thus to section of jurisdiction
The requirement of the slump of concrete is very high.Therefore, it is a kind of that there is the good slump, and the use with higher early strength
It is market prospects to have wide in the concrete for pouring section of jurisdiction；On the other hand, the manufacturing process of section of jurisdiction also can be to the pipe after shaping
The early strength of piece has large effect.
The content of the invention
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide and a kind of is used to pour the mixed of subway segment
Solidifying soil, has the advantages of improving the slump and early strength.
To achieve the above object one, the invention provides following technical scheme：
A kind of concrete for being used to pour subway segment, include the component of following parts by weight：
Cement 325-355 parts；
Middle sand 680-705 parts；
Stone 1100-1145 parts；
Water 138-152 parts；
Flyash 78-88 parts；
Water reducer 2-6 parts；
Swelling agent 3-8 parts；
Retarder 3-5 parts；
Fibre blend 3-8 parts；
Aqueous epoxy resins 2-5 parts；
The water reducer includes polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, the efficient diminishing of sulfamate system
At least two in agent；
The fibre blend includes at least two in steel fibre, polyacrylonitrile fibre, polyester fiber.
Pass through above-mentioned technical proposal, polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, sulfamate system are high
Effect water reducer is respectively provided with the effect for preferably reducing mixing water amount, and it is preferable to have the concrete in the application to be formed
Mobility, and be not easy to influence the slump of concrete, improve the bleeding situation of concrete, also contribute to early strength.
Cooperated by aqueous epoxy resins and fibre blend, help to form network structure, with cement, middle sand,
After the mixing of the components such as stone, the mobility of concrete is adjusted, further improves the slump of concrete.
Swelling agent after being mutually mixed with other components, discharge, and delays by the bubble contributed in the concrete by formation
Solidifying agent cooperates with swelling agent, makes the action time of swelling agent longer, and bubble is discharged more abundant.
Find that water reducer, fibre blend, aqueous epoxy resins form complex role through research (experiment one, experiment two),
So as to contribute to the bubble in the concrete by formation to discharge, reduce air content therein, so as to increase cement, middle sand, stone
Etc. the being completely embedded property between component, into the early strength for the section of jurisdiction for improving shaping.
More preferably：Include the component of following parts by weight：
345 parts of cement；
Middle 693 parts of sand；
1133 parts of stone；
145 parts of water；
85 parts of flyash；
3 parts of water reducer；
5 parts of swelling agent；
3 parts of retarder；
6 parts of fibre blend；
6 parts of aqueous epoxy resins.
Pass through above-mentioned technical proposal, find that each component of above-mentioned parts by weight coordinates shape through research (experiment one, experiment two)
Into the application in concrete there is more preferable mixed effect, and further improve the slump and improve early strength.
More preferably：In the fibre blend, the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber
Several ratio is 1-1.2:1.3-1.5:1, the length of the fibre blend is 6-15mm, a diameter of 10-20 μm.
Pass through above-mentioned technical proposal, found through research (experiment one), be favorably improved fibre blend and water-base epoxy tree
Cooperation between fat, so that the slump of concrete will not be too high, and the early strength of the subway segment after shaping is also higher.
More preferably：It is 1 that the water reducer, which includes ratio of weight and number,:3.2-3.5:1.3-1.5 polycarboxylate system
High-performance water reducing agent, naphthalene series high-efficiency water-reducing agent, Amino-sulfonic Acid-based Water-reducer.
Pass through above-mentioned technical proposal, found through research (experiment one, experiment two), the use of water reducer, be favorably improved and subtract
Water rate, the dosage of water is further reduced, makes the concrete in the application to be formed that there is the preferable slump, be easy to construction to grasp
Make.It is and high using the polycarboxylate series high-performance dehydragent in the range of aforementioned proportion, naphthalene series high-efficiency water-reducing agent, sulfamate system
Effect water reducer combines the water reducer to be formed, and forms complex role with fibre blend, aqueous epoxy resins, further reduces gassiness
Amount, so as to increase the being completely embedded property between the components such as cement, middle sand, stone, and then improve the early stage of the subway segment of shaping
Intensity.
More preferably：The retarder chooses retarder (HN) series；The swelling agent includes the ratio of parts by weight
It is worth for 1:1.5:1.8-2.1 aluminium sulfate type swelling agent, calcium hydroxide, bulking agent of calcium aluminate.
Pass through above-mentioned technical proposal, retarder (HN) series have excellent slump holding capacity, help to improve and mix
Coagulate the slump of soil.And the aluminium sulfate type swelling agent of corresponding parts by weight ratio, calcium hydroxide, bulking agent of calcium aluminate phase interworking
Close, with retarder collective effect, make swelling agent that there is more sufficient expansion, the gas contributed in the concrete by formation
Bubble discharge, the air content in concrete is further reduced, increase and be completely embedded degree between different components.
More preferably：The intensity of the cement is 52.5.
Pass through above-mentioned technical proposal, the intensity of cement is larger, the enabling capabilities for the subway segment being favorably improved after shaping
And mechanical property.
More preferably：The stone includes microlith and rubble, the parts by weight of microlith and rubble
Ratio be 0.4-0.5:1, the simple grain level of microlith is 5-10mm, and the simple grain level of rubble is 16-31.5mm.
Pass through above-mentioned technical proposal, microlith and rubble cooperate, and increase the filling effect between each component, reduce
Space between component, so as to improve the being completely embedded property between component, the early strength of the subway segment after increase shaping.
More preferably：The flyash is second class powered coal ash.
Pass through above-mentioned technical proposal, the early strength for the subway segment being favorably improved after shaping.
More preferably：The water-reducing rate of the water reducer is 20%.
Pass through above-mentioned technical proposal, after adding water reducer, preferable water-reducing rate is can reach, the water of addition is smaller, but energy
The suitable slump is kept, is favorably improved efficiency of construction.
The purpose of the present invention two is to provide a kind of manufacturing process for being used to pour the concrete of subway segment.
To achieve the above object two, the invention provides following technical scheme：
A kind of manufacturing process of subway segment, including said components, in addition to following operating procedure：
S1, the fibre blend of corresponding parts by weight is placed in 180-190 DEG C of baking oven and handled, by the water of corresponding parts by weight
Property epoxy resin be heated to 60-65 DEG C and keeping temperature, fibre blend is added in aqueous epoxy resins, with speed of agitator
For 1550r/min, 30min is stirred, forms aqueous epoxy resins mixture；
S2, the cement of corresponding parts by weight, middle sand, stone, flyash, water reducer, swelling agent, retarder are sufficiently mixed, shape
Into first mixed thing, the aqueous epoxy resins mixture obtained in step S1 is added in the water of corresponding parts by weight and is sufficiently mixed
Blend is formed, blend is added in just mixed thing and is sufficiently stirred, forms concrete；
S3, the quality of punching block is detected, make framework of steel reinforcement and hang in framework of steel reinforcement in punching block；
S4, then by the concreting obtained in step S2 to punching block, shaping forms section of jurisdiction；
S5, carry out steam curing 6-7h successively to the section of jurisdiction obtained in step S4, pond conserves 7-14 days, natural curing to 28
My god, obtain subway segment；
In the step S5, when steam curing starts, programming rate is 10-13 DEG C/h；At the end of steam curing, cooling rate is
15-18 DEG C/h, the temperature in constant temperature stage is 50-58 DEG C, and relative humidity of the section of jurisdiction in the constant temperature stage is 93-96%.
Pass through above-mentioned technical proposal, fibre blend, aqueous epoxy resins are respectively heated processing in step S1, had
Help improve the dispersion effect and connection effect between fibre blend and aqueous epoxy resins.And will be by fibre blend and water
Property the aqueous epoxy resins mixture that is mixed to form of epoxy resin, formed and mix with water, then be sufficiently mixed with the first thing that mixes, contributed to
Make aqueous epoxy resins mixture more preferable evenly with the mixed effect between first mixed thing, so that the subway segment that shaping is formed
With more preferably early strength.
In summary, the invention has the advantages that：
1. in fibre blend, steel fibre, polyacrylonitrile fibre, polyester fiber cooperate, so as to improve what is formed after shaping
The early strength of subway segment；
2. water reducer, fibre blend, aqueous epoxy resins form complex role, the bubble contributed in the concrete by formation
Discharge, reduces air content therein, so as to increase the being completely embedded property between the components such as cement, middle sand, stone, and then improve into
The early strength of the subway segment of type；
3. swelling agent and retarder cooperate, the compression strength for the section of jurisdiction to be formed is favorably improved；
4. fibre blend is added in 60-65 DEG C of aqueous epoxy resins, fully mixed through being handled in 180-190 DEG C of baking oven
Close, there are majority fibers mixture and aqueous epoxy resins to form more adequately and uniformly compounding effect.
Embodiment
With reference to embodiment, the present invention will be described in detail.
Embodiment 1：It is a kind of to be used to pouring the concrete of subway segment, including component and its corresponding parts by weight such as table
Shown in 1.
Wherein, the second-class portland cement of cement, intensity 52.5；The ratio that stone includes parts by weight is 0.4:1 it is thin
Stone and rubble, the simple grain level of microlith is 5-10mm, and the simple grain level of rubble is 16-31.5mm；Flyash is second patent flour
Coal ash；It is 1 that water reducer, which includes ratio of weight and number,:3.2:1.3 polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent,
Amino-sulfonic Acid-based Water-reducer；The ratio that swelling agent includes parts by weight is 1:1.5:1.8 aluminium sulfate type swelling agent,
Calcium hydroxide, bulking agent of calcium aluminate；Retarder chooses retarder (HN) series；In fibre blend, steel fibre, polyacrylonitrile are fine
Dimension, the ratio of parts by weight in polyester fiber are 1:1.3:1, the length of fibre blend is 6-15mm, a diameter of 10-20 μ
m。
Acquisition subway segment is made by the steps：
S1, fibre blend is placed in 180-190 DEG C of baking oven, aqueous epoxy resins are heated to 60-65 DEG C and keep temperature
Degree, fibre blend is added in aqueous epoxy resins, using speed of agitator as 1550r/min, is stirred 30min, is formed water-based
Epoxy resin composition；
S2, cement, middle sand, stone, flyash, water reducer, swelling agent, retarder are sufficiently mixed, just mixed thing are formed, by step
The aqueous epoxy resins mixture obtained in S1 is added to the water and is thoroughly mixed to form blend, and blend is added into just mixed thing
In be sufficiently stirred, formed concrete；
S3, the quality of punching block is detected, make framework of steel reinforcement and hang in framework of steel reinforcement in punching block；
S4, then by the concreting obtained in step S2 to punching block, shaping forms section of jurisdiction；
S5, carry out steam curing 6-7h successively to the section of jurisdiction obtained in step S4, pond conserves 7-14 days, natural curing to 28
My god, obtain subway segment.
Wherein, in step S5 when steam curing starts, programming rate is 10-13 DEG C/h；At the end of steam curing, cooling
Speed is 15-18 DEG C/h, and the temperature in constant temperature stage is 50-58 DEG C, and relative humidity of the section of jurisdiction in the constant temperature stage is 93-96%.
Embodiment 2-8：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, component therein
And its parts by weight are as shown in table 1 accordingly.
Component and its corresponding parts by weight in the embodiment 1-8 of table 1
Embodiment 9：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that water reducer is chosen poly-
Carboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, both ratios of weight and number are 1:3.2.
Embodiment 10：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that water reducer is chosen
Polycarboxylate series high-performance dehydragent, Amino-sulfonic Acid-based Water-reducer, both ratios of weight and number are 1:1.3.
Embodiment 11：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that water reducer is chosen
Naphthalene series high-efficiency water-reducing agent, Amino-sulfonic Acid-based Water-reducer, both ratios of weight and number are 3.2:1.3.
Embodiment 12：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in water reducer, gathers
Carboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of Amino-sulfonic Acid-based Water-reducer are 1:
3.2:1.5。
Embodiment 13：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in water reducer, gathers
Carboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of Amino-sulfonic Acid-based Water-reducer are 1:
3.5:1.3。
Embodiment 14：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in water reducer, gathers
Carboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of Amino-sulfonic Acid-based Water-reducer are 1:
3.5:1.5。
Embodiment 15：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
Steel fibre, polyacrylonitrile fibre are chosen, both ratios of weight and number are 1:1.3.
Embodiment 16：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
Steel fibre, polyester fiber are chosen, both ratios of weight and number are 1:1.
Embodiment 17：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
Polyacrylonitrile fibre, polyester fiber are chosen, both ratios of weight and number are 1.3:1.
Embodiment 18：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1:1.4:1.
Embodiment 19：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1:1.5:1.
Embodiment 20：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1.1:1.3:1.
Embodiment 21：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1.1:1.5:1.
Embodiment 22：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1.2:1.3:1.
Embodiment 23：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1.2:1.4:1.
Embodiment 24：A kind of to be used to pour the concrete of subway segment, the difference with embodiment 1 is, fibre blend
In, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1.2:1.5:1.
Embodiment 25：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in swelling agent, sulphur
Aluminate type swelling agent, calcium hydroxide, bulking agent of calcium aluminate parts by weight ratio be 1:1.5:1.9.
Embodiment 26：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in swelling agent, sulphur
Aluminate type swelling agent, calcium hydroxide, bulking agent of calcium aluminate parts by weight ratio be 1:1.5:2.0.
Embodiment 27：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 is, in swelling agent, sulphur
Aluminate type swelling agent, calcium hydroxide, bulking agent of calcium aluminate parts by weight ratio be 1:1.5:2.1.
Embodiment 28：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that microlith is sub and thick
The ratio of the parts by weight of stone is 0.43:1.
Embodiment 29：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that microlith is sub and thick
The ratio of the parts by weight of stone is 0.46:1.
Embodiment 30：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that microlith is sub and thick
The ratio of the parts by weight of stone is 0.48:1.
Embodiment 31：A kind of concrete for being used to pour subway segment, the difference with embodiment 1 are that microlith is sub and thick
The ratio of the parts by weight of stone is 0.50:1.
Comparative example 1-4：A kind of concrete, the difference with embodiment 1 be, component therein and its corresponding parts by weight
As shown in table 2.
Component and its corresponding parts by weight in the comparative example 1-4 of table 2
Comparative example 5-8：A kind of concrete, the difference with embodiment 1 be, component therein and its corresponding parts by weight
As shown in table 3.
Component and its corresponding parts by weight in the comparative example 5-8 of table 3
Comparative example 9：A kind of concrete, the difference with embodiment 1 is, in fibre blend, only contains steel fibre.
Comparative example 10：A kind of concrete, the difference with embodiment 1 is, only fine containing polyacrylonitrile in fibre blend
Dimension.
Comparative example 11：A kind of concrete, the difference with embodiment 1 is, in fibre blend, only contains polyester fiber.
Comparative example 12：A kind of concrete, the difference with embodiment 1 is, in fibre blend, steel fibre, polyacrylonitrile
The ratio of parts by weight in fiber, polyester fiber is 1:1:1.
Comparative example 13：A kind of concrete, the difference with embodiment 1 is, in fibre blend, steel fibre, polyacrylonitrile
The ratio of parts by weight in fiber, polyester fiber is 5:1:3.
Comparative example 14：A kind of concrete, the difference with embodiment 1 are that the length of fibre blend is 25-30mm, directly
Footpath is 5-7 μm.
Comparative example 15：A kind of concrete, the difference with embodiment 1 be, the length of fibre blend is 2-5mm, diameter
For 10-20 μm.
Comparative example 16：A kind of concrete, the difference with embodiment 1 be, all polycarboxylate series high-performances of water reducer
Water reducer.
Comparative example 17：A kind of concrete, the difference with embodiment 1 be, all naphthalene series high-efficiency water-reducing agents of water reducer.
Comparative example 18：A kind of concrete, the difference with embodiment 1 are that all sulfamate systems of water reducer are efficient
Water reducer.
Comparative example 19：A kind of concrete, the difference with embodiment 1 is, in water reducer, polycarboxylate series high-performance diminishing
Agent, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of Amino-sulfonic Acid-based Water-reducer are 1:1:1.
Comparative example 20：A kind of concrete, the difference with embodiment 1 is, in water reducer, polycarboxylate series high-performance diminishing
Agent, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of Amino-sulfonic Acid-based Water-reducer are 1:2:3.
Comparative example 21：A kind of concrete, the difference with embodiment 1 are that retarder is lignosulfonates.
Comparative example 22：A kind of concrete, the difference with embodiment 1 be, all aluminium sulfate type swelling agents of swelling agent.
Comparative example 23：A kind of concrete, the difference with embodiment 1 be, all calcium hydroxide of swelling agent.
Comparative example 24：A kind of concrete, the difference with embodiment 1 be, all bulking agent of calcium aluminate of swelling agent.
Comparative example 25：A kind of concrete, the difference with embodiment 1 is, in swelling agent, aluminium sulfate type swelling agent, hydrogen
Calcium oxide, bulking agent of calcium aluminate parts by weight ratio be 1:1:1.
Comparative example 26：A kind of concrete, the difference with embodiment 1 is, in swelling agent, aluminium sulfate type swelling agent, hydrogen
Calcium oxide, bulking agent of calcium aluminate parts by weight ratio be 2:1:3.
Comparative example 27：A kind of concrete, the difference with embodiment 1 are that the intensity of cement is 42.5.
Comparative example 28：A kind of concrete, the difference with embodiment 1 are that all microliths of stone are sub, the simple grain of microlith
Level is 5-10mm.
Comparative example 29：A kind of concrete, the difference with embodiment 1 are that all rubbles of stone are sub, the simple grain of rubble
Level is 16-31.5mm.
Comparative example 30：A kind of concrete, the difference with embodiment 1 be, the ratio of the parts by weight of microlith and rubble
It is worth for 0.1:1.
Comparative example 31：A kind of concrete, the difference with embodiment 1 be, the ratio of the parts by weight of microlith and rubble
It is worth for 1:1.
Comparative example 32：A kind of concrete, the difference with embodiment 1 are, during subway segment is manufactured, by water
Mud, middle sand, stone, flyash, water reducer, swelling agent, retarder, fibre blend, aqueous epoxy resins are stirred, then are added
Enter water to be stirred.
Comparative example 33：A kind of concrete, the difference with embodiment 1 are, during subway segment is manufactured, step S1
In, fibre blend is placed in 60-65 DEG C of baking oven, and the aqueous epoxy resins of corresponding parts by weight are heated into 60-65 DEG C simultaneously
Keeping temperature, fibre blend is added in aqueous epoxy resins, using speed of agitator as 1550r/min, stirs 30min, shape
Into aqueous epoxy resins mixture.
Experiment one, the slump, air content test
Subjects：Using the concrete prepared in embodiment 1-31 as test sample 1-31, using in comparative example 1-35
The concrete prepared is as control sample 1-35.
Test method：According to GBT14902-2012, the slump is carried out to test sample 1-31 and control sample 1-35 respectively, is contained
The detection of tolerance, record and analyze.
Result of the test：The test sample 1-31 slump, air content is as shown in table 4；The control sample 1-35 slump, air content
As shown in table 5.
From table 4 and table 5, the air content in test sample 1-31 is relatively low, and the slump is relatively mild, helps to make shaping
Subway segment air entrapment afterwards is less, so as to be not likely to produce the relatively low phenomenon of intensity；And the air content base in control sample 1-35
This is higher than test sample 1-31 air content, and the slump is relatively low, easily cause shaping after subway segment inside bubble it is more and
The relatively low situation of intensity, and the slump too low the problems such as easily causing pumping difficulties, so as to be unfavorable for improving efficiency of construction.In appearance
The reason for stating situation is：Component, dosage in water reducer, fibre blend, aqueous epoxy resins is different, is easily caused what is formed
Bubble in concrete is difficult to be discharged, and influences the being completely embedded property between each component；And the addition of water reducer is less and add
The water entered is less, and the slump for the concrete to be formed can be caused too small；The mistake of composite fibre mixture and aqueous epoxy resins
Cheng Zhong, hybrid mode is unreasonable, and mixing can be caused not uniform enough, and is not easy the discharge of the bubble in concrete, influences the slump
Meanwhile also easily influence air content.
The test sample 1-31 of table 4 slump, air content
The control sample 1-35 of table 5 slump, air content
Experiment two, compressive strength test
Subjects：Specification made of the concrete prepared in embodiment 1-31 is used as 150mm × 150mm × 150mm
Cube specimen as test sample 1-31, use specification made of the concrete prepared in comparative example 1-35 as 150mm
× 150mm × 150mm cube specimen is as control sample 1-35.
Test method：1. viewing test sample 1-31 and control sample 1-35 visual condition；2. according to GB50107-2010, divide
It is other that the 7th day, the 14th day, the detection of the compression strength of the 28th day are carried out to test sample 1-31 and control sample 1-35.
Result of the test：Test sample 1-31 outward appearance, compression strength is as shown in table 6；Control sample 1-35 outward appearance, compression strength
As shown in table 7.
The test sample 1-31 of table 6 outward appearance, compression strength
The control sample 1-35 of table 7 outward appearance, compression strength
From table 6 and table 7, test sample 1-31 outside is more smooth and without hollow, and the 7th day, the 14th day, the 28th day
When compression strength it is larger, the subway segment after shaping has preferable ability to bear.And control sample 1-35 outside substantially compared with
It is not smooth enough for hollow, and the 7th day, the 14th day, the compression strength of the 28th day rise it is smaller, so as to the ground for being not easy to make after shaping
Iron pipe piece has preferable ability to bear.The reason for appearance the above situation, is：
1. the component, dosage in water reducer, fibre blend, aqueous epoxy resins are different, the connection between component can be caused
Compactness, and then improve the early strength of the subway segment of shaping；
2. fibre blend does not meet corresponding condition with the mixing of aqueous epoxy resins, fibre blend and water-based ring are easily caused
The mixing of oxygen tree fat is not abundant enough, so as to influence the intensity of the subway segment after shaping.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of concrete for being used to pour subway segment, it is characterised in that include the component of following parts by weight：
Cement 325-355 parts；
Middle sand 680-705 parts；
Stone 1100-1145 parts；
Water 138-152 parts；
Flyash 78-88 parts；
Water reducer 2-6 parts；
Swelling agent 3-8 parts；
Retarder 3-5 parts；
Fibre blend 3-8 parts；
Aqueous epoxy resins 2-5 parts；
The water reducer includes polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, the efficient diminishing of sulfamate system
At least two in agent；
The fibre blend includes at least two in steel fibre, polyacrylonitrile fibre, polyester fiber.
A kind of 2. concrete for being used to pour subway segment according to claim 1, it is characterised in that：Including following weight
The component of number：
345 parts of cement；
Middle 693 parts of sand；
1133 parts of stone；
145 parts of water；
85 parts of flyash；
3 parts of water reducer；
5 parts of swelling agent；
3 parts of retarder；
6 parts of fibre blend；
6 parts of aqueous epoxy resins.
A kind of 3. concrete for being used to pour subway segment according to claim 1 or 2, it is characterised in that the fiber
In mixture, the ratio of the parts by weight in steel fibre, polyacrylonitrile fibre, polyester fiber is 1-1.2:1.3-1.5:1, it is described
The length of fibre blend is 6-15mm, a diameter of 10-20 μm.
A kind of 4. concrete for being used to pour subway segment according to claim 3, it is characterised in that：The water reducer bag
Ratio of weight and number is included as 1:3.2-3.5:1.3-1.5 polycarboxylate series high-performance dehydragent, naphthalene series high-efficiency water-reducing agent, amino sulphur
Hydrochlorate series high-efficiency water-reducing agent.
A kind of 5. concrete for being used to pour subway segment according to claim 4, it is characterised in that：The retarder choosing
Take retarder（HN）Series；The ratio that the swelling agent includes parts by weight is 1:1.5:1.8-2.1 aluminium sulfate type expansion
Agent, calcium hydroxide, bulking agent of calcium aluminate.
A kind of 6. concrete for being used to pour subway segment according to claim 1 or 2, it is characterised in that the cement
Intensity be 52.5.
7. a kind of concrete for being used to pour subway segment according to claim 6, it is characterised in that the stone includes
Microlith and rubble, the ratio of the parts by weight of microlith and rubble is 0.4-0.5:1, the simple grain of microlith
Level is 5-10mm, and the simple grain level of rubble is 16-31.5mm.
8. a kind of it is used to pour the concrete of subway segment according to claim 7, it is characterised in that the flyash is
Second class powered coal ash.
9. a kind of concrete for being used to pour subway segment according to claim 8, it is characterised in that the water reducer
Water-reducing rate is 20%.
A kind of 10. manufacturing process of subway segment, it is characterised in that including the component in claim 1-2, in addition to following behaviour
Make step：
S1, the fibre blend of corresponding parts by weight is placed in 180-190 DEG C of baking oven and handled, by the water of corresponding parts by weight
Property epoxy resin be heated to 60-65 DEG C and keeping temperature, fibre blend is added in aqueous epoxy resins, with speed of agitator
For 1550r/min, 30min is stirred, forms aqueous epoxy resins mixture；
S2, the cement of corresponding parts by weight, middle sand, stone, flyash, water reducer, swelling agent, retarder are sufficiently mixed, shape
Into first mixed thing, the aqueous epoxy resins mixture obtained in step S1 is added in the water of corresponding parts by weight and is sufficiently mixed
Blend is formed, blend is added in just mixed thing and is sufficiently stirred, forms concrete；
S3, the quality of punching block is detected, make framework of steel reinforcement and hang in framework of steel reinforcement in punching block；
S4, then by the concreting obtained in step S2 to punching block, shaping forms section of jurisdiction；
S5, carry out steam curing 6-7h successively to the section of jurisdiction obtained in step S4, pond conserves 7-14 days, natural curing to 28
My god, obtain subway segment；
In the step S5, when steam curing starts, programming rate is 10-13 DEG C/h；At the end of steam curing, cooling rate is
15-18 DEG C/h, the temperature in constant temperature stage is 50-58 DEG C, and relative humidity of the section of jurisdiction in the constant temperature stage is 93-96%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731380.XA CN107522440A (en) | 2017-08-23 | 2017-08-23 | A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731380.XA CN107522440A (en) | 2017-08-23 | 2017-08-23 | A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107522440A true CN107522440A (en) | 2017-12-29 |
Family
ID=60681932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710731380.XA Pending CN107522440A (en) | 2017-08-23 | 2017-08-23 | A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107522440A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279594A (en) * | 2020-11-03 | 2021-01-29 | 浙江银泰水泥构件股份有限公司 | F-shaped steel bell mouth reinforced concrete drain pipe and processing technology thereof |
| CN116675481A (en) * | 2023-03-06 | 2023-09-01 | 江西龙正科技发展有限公司 | Preparation method and application of ultra-high performance concrete UHPC thin subway segment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060185562A1 (en) * | 2005-02-18 | 2006-08-24 | Ogden J H | Fiber reinforced concrete products and method of preparation |
| CN101003428A (en) * | 2006-12-26 | 2007-07-25 | 武汉理工大学 | Low shrinken, fireproof, high leakage resisted material of duct piece for shield tunnel, and preparation method |
| CN104773988A (en) * | 2015-04-03 | 2015-07-15 | 东南大学 | Steam-curing-free early-strength steel fiber concrete pipe segment and preparation method thereof |
| CN106186966A (en) * | 2016-07-26 | 2016-12-07 | 蚌埠市方阵商品混凝土有限公司 | A kind of concrete with excellent durability energy |
| CN106495621A (en) * | 2016-09-22 | 2017-03-15 | 黄贺明 | A kind of inorganic high-performance duct pieces of shield tunnel |
-
2017
- 2017-08-23 CN CN201710731380.XA patent/CN107522440A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060185562A1 (en) * | 2005-02-18 | 2006-08-24 | Ogden J H | Fiber reinforced concrete products and method of preparation |
| CN101003428A (en) * | 2006-12-26 | 2007-07-25 | 武汉理工大学 | Low shrinken, fireproof, high leakage resisted material of duct piece for shield tunnel, and preparation method |
| CN104773988A (en) * | 2015-04-03 | 2015-07-15 | 东南大学 | Steam-curing-free early-strength steel fiber concrete pipe segment and preparation method thereof |
| CN106186966A (en) * | 2016-07-26 | 2016-12-07 | 蚌埠市方阵商品混凝土有限公司 | A kind of concrete with excellent durability energy |
| CN106495621A (en) * | 2016-09-22 | 2017-03-15 | 黄贺明 | A kind of inorganic high-performance duct pieces of shield tunnel |
Non-Patent Citations (3)
| Title |
|---|
| 李青山等: "《材料加工助剂原理及应用》", 31 March 2002, 哈尔滨工程大学出版社 * |
| 杨医博: "《土木工程材料》", 31 December 2016, 华南理工大学出版社 * |
| 高丹盈等: "《钢纤维混凝土基本理论》", 31 December 1994, 科学文献出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279594A (en) * | 2020-11-03 | 2021-01-29 | 浙江银泰水泥构件股份有限公司 | F-shaped steel bell mouth reinforced concrete drain pipe and processing technology thereof |
| CN112279594B (en) * | 2020-11-03 | 2022-04-26 | 浙江银泰水泥构件股份有限公司 | F-shaped steel bell mouth reinforced concrete drain pipe and processing technology thereof |
| CN116675481A (en) * | 2023-03-06 | 2023-09-01 | 江西龙正科技发展有限公司 | Preparation method and application of ultra-high performance concrete UHPC thin subway segment |
| CN116675481B (en) * | 2023-03-06 | 2024-05-21 | 江西龙正科技发展有限公司 | Preparation method and application of ultra-high performance concrete UHPC thin subway segment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105948660B (en) | A kind of high-strength superhigh tenacity concrete and preparation method thereof | |
| CN102060482B (en) | Self-compacting concrete | |
| CN105541384B (en) | A kind of ultralight foam concrete and preparation method thereof | |
| CN112960952B (en) | High-crack-resistance light-weight high-strength self-compacting concrete and preparation method thereof | |
| CN109293317A (en) | High-strength self-compacting concrete and preparation method thereof | |
| CN105801053A (en) | Self-compacting concrete with high content of fly ash C40 | |
| CN102126848B (en) | Cement-based self-leveling dry powder mortar for high-cracking-resistance ground | |
| CN103896527A (en) | Lightweight high-strength cement based composite material | |
| CN102745964B (en) | Grouting material | |
| CN101182139A (en) | Masonry cement having higher strength and water retention | |
| CN106830988A (en) | A kind of light-weight aggregate high performance concrete and preparation method thereof | |
| CN104386969B (en) | A kind of high-strength high-durability lightweight aggregate concrete and preparation method thereof | |
| CN107382216B (en) | High-strength concrete doped with iron tailings and construction waste and preparation method thereof | |
| CN104150840A (en) | C60 full-manufactured sand super high-rise pump concrete | |
| CN102173629A (en) | Volume stabilizer of cement-based materials and application method thereof | |
| CN113387649A (en) | Green and environment-friendly C80 high-strength high-performance machine-made sand concrete and preparation method thereof | |
| CN103130464B (en) | C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof | |
| CN115073093A (en) | Low-shrinkage high-strength self-compacting recycled concrete and preparation method thereof | |
| CN103086627B (en) | Mineral blending material for producing PHC (Pyrolysis Hydrocarbon) tubular pipe free from high pressure steaming process as well as application | |
| CN106630882A (en) | Medium/high-strength concrete prepared from modified phosphogypsum based binding material and manufacturing method of concrete | |
| CN107522440A (en) | A kind of manufacturing process for being used to pour the concrete and subway segment of subway segment | |
| CN107973555A (en) | A kind of glass fibre self-compacting concrete | |
| CN102690093A (en) | High-strength water resistance phosphogypsum steam-cured brick and preparation method thereof | |
| CN108046704A (en) | It is a kind of for grouting material of railway bridge bearing and preparation method thereof | |
| CN104557124B (en) | Lightweight anti-crack concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171229 |
|
| RJ01 | Rejection of invention patent application after publication |