CN108675710A - A kind of non-dispersible underwater concrete and its construction method - Google Patents
A kind of non-dispersible underwater concrete and its construction method Download PDFInfo
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- CN108675710A CN108675710A CN201810377632.8A CN201810377632A CN108675710A CN 108675710 A CN108675710 A CN 108675710A CN 201810377632 A CN201810377632 A CN 201810377632A CN 108675710 A CN108675710 A CN 108675710A
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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
- C04B28/02—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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
- C04B2111/275—Making materials water insoluble
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/74—Underwater applications
Abstract
The present invention relates to a kind of non-dispersible underwater concrete, the concrete includes that following components by mass percentage are made：Cementitious material 15% 25%, sand 27% 31%, stone 40% 46.5%, water-reducing agent 0.3% 0.7%, flocculant 0.3% 0.7% and water 7.5% 9.5%.Non-dispersible underwater concrete provided by the invention, its dispersion resistance can significantly improve, and coordinate corresponding underwater casting construction technology, can control concreting speed, it is substantially reduced the entrance of corrosive medium in concreting process, improves the compactness of concrete and the long durability of bored concrete pile.
Description
Technical field
The present invention relates to concrete field, more particularly to a kind of non-dispersible underwater concrete and its construction method.
Background technology
Standard GB/T 50046-2008《Code for design of corrosion prevention of industrial buildings》Bored concrete pile foundation is limited in deep-etching
The use of environment, one of main cause are that concrete contacts in casting process with corrosive medium, and Korrosionsmedium is entered
Inside green concrete, so as to influence the long durability energy of concrete hydrating quality and bored concrete pile.
Non-dispersible underwater concrete has good dispersion resistance energy and mobility, coordinates corresponding underwater casting construction skill
Art can effectively reduce the entrance of bored concrete pile corrosive medium in concreting process, reduce corrosive medium pair to the greatest extent
The harmful effect of concrete quality and bored concrete pile long durability.
Currently, common underwater concreting method includes tremie method, packed method, suspended bulkhead raising method and liter slurry processes etc..Wherein lead
Tube method is using a kind of relatively extensive underwater casting construction method, and advantage is exactly to pour that continuity is good, and speed of perfusion is fast, no
Aggregate separated is easily caused, construction and design requirement can be met to greatest extent, construction equipment is simple to operation, pours cost
It is low.At present tremie method frequently with conduit diameter be 30mm, just perfusion when conduit in concrete before must place 1 soft ball,
Underwater concrete by itself mobility soft top dome is gone out after spread out around.For Cracking of High Flowing Concrete (the high slump), adopt
It is difficult to control concreting speed with tremie method, is mismatched with the working performance of non-dispersible underwater concrete, is easy to happen stake
Lower concrete compactness is bad, or even voids and pits situation occurs.
Invention content
In order to solve the above-mentioned deficiency in the presence of the prior art, the present invention provide a kind of non-dispersible underwater concrete and its
Construction method.
Technical solution provided by the invention is：A kind of non-dispersible underwater concrete, the concrete include pressing quality percentage
Following components than meter are made：Cementitious material 15%-25%, sand 27%-31%, stone 40%-46.5%, water-reducing agent 0.3%-
0.7%, flocculant 0.3%-0.7% and water 7.5%-9.5%.
Preferably, the cementitious material includes：Portland cement 6%-15% and miberal powder 9%-18%.
Preferably, the concrete further includes thickener, and the concentration of aqueous solution of the thickener is 0.1-0.25%.
Preferably, the thickener is konjac glucomannan.
Preferably, ranging from the 9.5~10.7 of the pH value of the water.
Preferably, the water-reducing agent includes that the raw material based on following portions by weight is made：It is 4 parts of methylene diphenylhydantoin sodium, secondary
5 parts of methyl sodium naphthalene sulfonate, 2 parts of lignosulfonates, 3 parts of molasses, 6 parts of ripe glutinous rice flour, 5 parts of vinyl acetate, tripolyphosphate
5 parts of sodium, 5 parts of waterglass, 5 parts of potassium methyl silicate, 17 parts of water.
Preferably, the preparation method of the water-reducing agent, includes the following steps：
S1, component is weighed；
S2, by methylene diphenylhydantoin sodium, methine methyl naphthalene sulfonic acid sodium, lignosulfonates, sodium tripolyphosphate, water glass
Blender is added in glass, potassium methyl silicate and water, and 45min is mixed under 5000r/min speed；
S3, molasses, ripe glutinous rice flour and vinyl acetate are added into step S2 resulting materials, stir 50min.
Preferably, the flocculant is including being by weight 1: 0.5 component A and B component；
The component A includes based on following portions by weight at being grouped as：Methylcellulose 1, formaldehyde condensation products 1.25, wood
Quality sulfoacid calcium 0.4, flyash 4 and zeolite powder 3.35；
The B component includes based on following portions by weight at being grouped as：Calcium formate 2, silicon ash 3 and calcium metasilicate 1.
Preferably, 45 μm of the flyash is tailed over equal to 14%；
45 μm of the zeolite powder is tailed over equal to 17%；
45 μm of the silicon ash is tailed over equal to 0.02%.
Based on same goal of the invention, a kind of non-dispersible underwater concrete that the present invention also provides a kind of as described in any of the above-described
Construction method, the construction method includes the following steps：
According to the water body amount of bored concrete pile foundation pit, the thickener that concentration of aqueous solution is 0.1-0.25% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.6m3The speed of/min is poured into bored concrete pile foundation pit as any of the above-described
The concrete.
Compared with the immediate prior art, technical solution provided by the invention has the advantages that：
(1) technical solution provided by the invention, using non-dispersible underwater concrete, dispersion resistance can significantly improve, and match
Corresponding underwater casting construction technology is closed, concreting speed is can control, hence it is evident that reduces and corrodes Jie in concreting process
The entrance of matter improves the compactness of concrete and the long durability of bored concrete pile.
(2) technical solution provided by the invention, the water-reducing agent of use is at low cost, and diminishing, retarding effect are good, water-reducing rate
Height reaches 15%-20%, and the application property of the water-reducing agent is good, and intensity is high, and adaptability is good, and mixing water amount can be greatly reduced, change
Kind concrete mix rheological property, has good economic benefit and social benefit.
(3) technical solution provided by the invention can make underwater grouting mix have excellent anti-dispersion using flocculant
Property, self-leveling, can reduce underwater grouting mix cast when water pollution, to close gap cast have excellent filling
Property, the loss of the hardening strength caused by grouting mix dispersion can be reduced, and the bonding of grouting hardening thing and reinforcing bar can be improved
Power.It can be applied to the slope protection works in rivers and lakes river sea, dam foundation is washed in a pan recovery project, the envelope of bridge foundation open caisson at empty position by water
Basic skill or training's journey.
(4) technical solution provided by the invention, the flocculant of use, the condensation during non-dispersible underwater concrete can be made to construct
Time, early strength improved 36%, and 30 minutes before concrete coagulation keep pumping energy in 15 minutes~10 hour adjustments
Power.
Description of the drawings
Fig. 1 is the tremie method concrete placed under water construction schematic diagram of the present invention；
Wherein, 1- hoppers；2- dish threshold switch；3- conduits；4- non-dispersible underwater concretes；The soft balls of 5-；6- bored concrete pile foundation pits.
Specific implementation mode
For a better understanding of the present invention, technical scheme of the present invention is described in further details below in conjunction with the accompanying drawings.
The object of the present invention is to provide a kind of non-dispersible underwater concretes so that concrete itself has to be poured under water
It can directly be contacted with ambient water in journey, and concrete mix each component has preferable anti-dispersibility.
The present invention above-mentioned technical purpose technical scheme is that：One kind not disperseing coagulation under water
Soil, the concrete include that following components by mass percentage are made：Cementitious material 15%-25%, sand 27%-31%,
Stone 40%-46.5%, water-reducing agent 0.3%-0.7%, flocculant 0.3%-0.7% and water 7.5%-9.5%；Normal silicate water
Mud 6%-15% and miberal powder 9%-18%；P.O.42.5 grades of Portland cements, S105 grades of miberal powders, fine aggregate fineness modulus
2.6, clay content≤0.5%；5~25mm of coarse aggregate size；The concrete further includes thickener, the aqueous solution of the thickener
A concentration of 0.1-0.25%；The thickener is konjac glucomannan；Ranging from the 9.5~10.7 of the pH value of the water；The water-reducing agent
Include that raw material based on following portions by weight is made：4 parts of methylene diphenylhydantoin sodium, 5 parts of methine methyl naphthalene sulfonic acid sodium, lignin
2 parts of sulfonate, 3 parts of molasses, 6 parts of ripe glutinous rice flour, 5 parts of vinyl acetate, 5 parts of sodium tripolyphosphate, 5 parts of waterglass, potassium methyl silicate 5
Part, 17 parts of water；The flocculant is including being by weight 1: 0.5 component A and B component；The component A includes by following heavy
Amount number meter at being grouped as：Methylcellulose 1, formaldehyde condensation products 1.25, calcium lignosulfonate 0.4, flyash 4 and zeolite powder
3.35；The B component includes based on following portions by weight at being grouped as：Calcium formate 2, silicon ash 3 and calcium metasilicate 1；The powder
45 μm of coal ash is tailed over equal to 14%；45 μm of the zeolite powder is tailed over equal to 17%；45 μm of the silicon ash is tailed over equal to 0.02%.
The slump of non-dispersible underwater concrete is between 230~260mm.
Based on same inventive concept, the present embodiment also provides a kind of preparation method of water-reducing agent, includes the following steps：
S1, component is weighed；
S2, by methylene diphenylhydantoin sodium, methine methyl naphthalene sulfonic acid sodium, lignosulfonates, sodium tripolyphosphate, water glass
Blender is added in glass, potassium methyl silicate and water, and 45min is mixed under 5000r/min speed；
S3, molasses, ripe glutinous rice flour and vinyl acetate are added into step S2 resulting materials, stir 50min.
Based on same inventive concept, the present embodiment also provides a kind of construction method of non-dispersible underwater concrete, described to apply
Work method includes the following steps：
According to the water body amount of bored concrete pile foundation pit, the thickener that concentration of aqueous solution is 0.1-0.25% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.6m3The speed of/min is poured into bored concrete pile foundation pit as any of the above-described
The concrete.
The soft ball for controlling concreting speed can be equipped in conduit, there are for mixed between soft ball and pipe inner wall
Solidifying soil by gap, after conduit lower end is inserted into water, soft ball is jacked up by water to float in conduit.
A kind of non-dispersible underwater concrete of the present invention, using tremie method, conduit diameter 150mm-200mm, and
Equipped with butterfly control valve door, soft ball is pre-placed in conduit before concrete, convenient for control concreting speed.
The pH value of water solution of non-dispersible underwater concrete of the present invention is between 9.5-10.7, the water of general concrete
Solution ph is 12.5 or more；Between 100-150mg/L, general concrete hangs non-dispersible underwater concrete suspended things content
Absurd creature content is in 500mg/L or more.
Compared with prior art, non-dispersible underwater concrete dispersion resistance of the present invention can significantly improve, and coordinate phase
The underwater casting construction technology answered can control concreting speed, hence it is evident that reduce corrosive medium in concreting process
Into improving the compactness of concrete and the long durability of bored concrete pile.
High efficiency water reducing agent of the present invention is at low cost, and diminishing, retarding effect are good, and water-reducing rate is high, reaches 15%-20%, the diminishing
The application property of agent is good, and intensity is high, and adaptability is good, and mixing water amount can be greatly reduced, and improves concrete mix rheological property,
With good economic benefit and social benefit.
The flocculant of the present invention can make underwater grouting mix have excellent dispersion resistance, self-leveling, can reduce water
Water pollution when lower grouting mix cast has excellent fillibility to close gap cast, can reduce because grouting is mixed and stirred
The loss of hardening strength caused by object disperses, and the cohesive force of grouting hardening thing and reinforcing bar can be improved.It can be applied to rivers and lakes He Hai
Slope protection works, dam foundation recovery project, the back cover engineering of bridge foundation open caisson at empty position are washed in a pan by water.Can make under water regardless of
The setting time in concrete construction is dissipated in 15 minutes~10 hour adjustments, and early strength improves 36%, and solidifying in concrete
Knot keeps pumpability in first 30 minutes.
Embodiment 1
The non-dispersible underwater concrete that strength grade is C40 is configured, using P.O.42.5 grades of Portland cements 6%,
S105 grades of miberal powders 9%, sand 27%, stone 40%, mixing water 7.5%, water-reducing agent 0.3%, flocculant 0.3%；
Sand during fine aggregate uses, fineness modulus 2.6, clay content 0.1%；Coarse aggregate size 5mm；
The fresh concrete slump is 230mm, and divergence 500mm, pH value of water solution 9.5, suspended things content is
100mg/L。
The construction method of non-dispersible underwater concrete, the construction method include the following steps：
According to the water body amount of bored concrete pile foundation pit, the konjac glucomannan that concentration of aqueous solution is 0.1% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.5m3The speed of/min casting concrete into bored concrete pile foundation pit.
Non-dispersible underwater concrete provided in this embodiment, dispersion resistance can significantly improve, and cooperation is poured under water accordingly
Construction technology is built, concreting speed is can control, hence it is evident that the entrance for reducing corrosive medium in concreting process improves
The compactness of concrete and the long durability of bored concrete pile.
Water-reducing agent provided in this embodiment, at low cost, diminishing, retarding effect are good, and water-reducing rate is high, reach 15%, this subtracts
The application property of aqua is good, and intensity is high, and adaptability is good, and mixing water amount can be greatly reduced, and improves concrete mixing rheology
Can, there is good economic benefit and social benefit.
Flocculant provided in this embodiment can make underwater grouting mix have excellent dispersion resistance, self-leveling, can
Reduce the water pollution when cast of underwater grouting mix, there is excellent fillibility to close gap cast, can reduce because filling
The loss of hardening strength caused by starching mix dispersion, and the cohesive force of grouting hardening thing and reinforcing bar can be improved；It can be applied to river
Slope protection works, the dam foundation of Hu Hehai are washed in a pan recovery project, the back cover engineering of bridge foundation open caisson at empty position by water；It can make water
Setting time in lower concrete capable of not dispersing construction, early strength improved 36%, and 30 before concrete coagulation at 15 minutes
Minute keeps pumpability.
Embodiment 2
The non-dispersible underwater concrete that strength grade is C40 is configured, using P.O.42.5 grades of Portland cements 15%,
S105 grades of miberal powders 18%, sand 31%, stone 46.5%, mixing water 9.5%, water-reducing agent 0.7%, flocculant 0.7%；
Sand during fine aggregate uses, fineness modulus 2.6, clay content 0.5%；Coarse aggregate size 25mm；
The fresh concrete slump is 260mm, and divergence 700mm, pH value of water solution 10.7, suspended things content is
150mg/L。
The construction method of non-dispersible underwater concrete, the construction method include the following steps：
According to the water body amount of bored concrete pile foundation pit, the konjac glucomannan that concentration of aqueous solution is 0.25% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.6m3The speed of/min casting concrete into bored concrete pile foundation pit.
Non-dispersible underwater concrete provided in this embodiment, dispersion resistance can significantly improve, and cooperation is poured under water accordingly
Construction technology is built, concreting speed is can control, hence it is evident that the entrance for reducing corrosive medium in concreting process improves
The compactness of concrete and the long durability of bored concrete pile.
Water-reducing agent provided in this embodiment, at low cost, diminishing, retarding effect are good, and water-reducing rate is high, reach 20%, this subtracts
The application property of aqua is good, and intensity is high, and adaptability is good, and mixing water amount can be greatly reduced, and improves concrete mixing rheology
Can, there is good economic benefit and social benefit.
Flocculant provided in this embodiment can make underwater grouting mix have excellent dispersion resistance, self-leveling, can
Reduce the water pollution when cast of underwater grouting mix, there is excellent fillibility to close gap cast, can reduce because filling
The loss of hardening strength caused by starching mix dispersion, and the cohesive force of grouting hardening thing and reinforcing bar can be improved；It can be applied to river
Slope protection works, the dam foundation of Hu Hehai are washed in a pan recovery project, the back cover engineering of bridge foundation open caisson at empty position by water；It can make water
Setting time in lower concrete capable of not dispersing construction, early strength improved 50%, and 40 before concrete coagulation at 10 hours
Minute keeps pumpability.
Embodiment 3
The non-dispersible underwater concrete that strength grade is C40 is configured, using P.O.42.5 grades of Portland cements
10.5%, S105 grades of miberal powders 13.5%, sand 29%, stone 43.5%, mixing water 8.5%, water-reducing agent 0.5%, flocculant 0.5%；
Sand during fine aggregate uses, fineness modulus 2.6, clay content 0.3%；Coarse aggregate size 15mm；
The fresh concrete slump is 245mm, and divergence 600mm, pH value of water solution 10.1, suspended things content is
125mg/L。
The construction method of non-dispersible underwater concrete, the construction method include the following steps：
According to the water body amount of bored concrete pile foundation pit, the konjac glucomannan that concentration of aqueous solution is 0.18% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.6m3The speed of/min casting concrete into bored concrete pile foundation pit.
Non-dispersible underwater concrete provided in this embodiment, dispersion resistance can significantly improve, and cooperation is poured under water accordingly
Construction technology is built, concreting speed is can control, hence it is evident that the entrance for reducing corrosive medium in concreting process improves
The compactness of concrete and the long durability of bored concrete pile.
Water-reducing agent provided in this embodiment, at low cost, diminishing, retarding effect are good, and water-reducing rate is high, reach 18%, this subtracts
The application property of aqua is good, and intensity is high, and adaptability is good, and mixing water amount can be greatly reduced, and improves concrete mixing rheology
Can, there is good economic benefit and social benefit.
Flocculant provided in this embodiment can make underwater grouting mix have excellent dispersion resistance, self-leveling, can
Reduce the water pollution when cast of underwater grouting mix, there is excellent fillibility to close gap cast, can reduce because filling
The loss of hardening strength caused by starching mix dispersion, and the cohesive force of grouting hardening thing and reinforcing bar can be improved；It can be applied to river
Slope protection works, the dam foundation of Hu Hehai are washed in a pan recovery project, the back cover engineering of bridge foundation open caisson at empty position by water；It can make water
Setting time in lower concrete capable of not dispersing construction, early strength improved 43%, and 35 points before concrete coagulation at 5 hours
Clock keeps pumpability.
It these are only the embodiment of the present invention, be not intended to restrict the invention, it is all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. a kind of non-dispersible underwater concrete, which is characterized in that
The concrete includes that following components by mass percentage are made：Cementitious material 15%-25%, sand 27%-31%,
Stone 40%-46.5%, water-reducing agent 0.3%-0.7%, flocculant 0.3%-0.7% and water 7.5%-9.5%.
2. a kind of non-dispersible underwater concrete as described in claim 1, which is characterized in that the cementitious material includes：Commonly
Portland cement 6%-15% and miberal powder 9%-18%.
3. a kind of non-dispersible underwater concrete as described in claim 1, which is characterized in that the concrete further includes thickening
The concentration of aqueous solution of agent, the thickener is 0.1-0.25%.
4. a kind of non-dispersible underwater concrete as claimed in claim 3, which is characterized in that the thickener is konjac glucomannan.
5. a kind of non-dispersible underwater concrete as described in claim 1, which is characterized in that the pH value of the water is ranging from
9.5~10.7.
6. a kind of non-dispersible underwater concrete as described in claim 1, which is characterized in that the water-reducing agent includes by following heavy
The raw material of amount number meter is made：4 parts of methylene diphenylhydantoin sodium, 5 parts of methine methyl naphthalene sulfonic acid sodium, 2 parts of lignosulfonates, sugar
3 parts of honey, 6 parts of ripe glutinous rice flour, 5 parts of vinyl acetate, 5 parts of sodium tripolyphosphate, 5 parts of waterglass, 5 parts of potassium methyl silicate, 17 parts of water.
7. a kind of non-dispersible underwater concrete as claimed in claim 6, which is characterized in that the preparation method of the water-reducing agent,
Include the following steps：
S1, component is weighed；
S2, by methylene diphenylhydantoin sodium, methine methyl naphthalene sulfonic acid sodium, lignosulfonates, sodium tripolyphosphate, waterglass, first
Blender is added in base potassium silicate and water, and 45min is mixed under 5000r/min speed；
S3, molasses, ripe glutinous rice flour and vinyl acetate are added into step S2 resulting materials, stir 50min.
8. a kind of non-dispersible underwater concrete as described in claim 1, which is characterized in that the flocculant includes by weight
Than the component A and B component for 1: 0.5；
The component A includes based on following portions by weight at being grouped as：Methylcellulose 1, formaldehyde condensation products 1.25, lignin
Sulfoacid calcium 0.4, flyash 4 and zeolite powder 3.35；
The B component includes based on following portions by weight at being grouped as：Calcium formate 2, silicon ash 3 and calcium metasilicate 1.
9. a kind of non-dispersible underwater concrete as claimed in claim 8, which is characterized in that
45 μm of the flyash is tailed over equal to 14%；
45 μm of the zeolite powder is tailed over equal to 17%；
45 μm of the silicon ash is tailed over equal to 0.02%.
10. a kind of a kind of construction method of non-dispersible underwater concrete as described in claim 1-9 is any, which is characterized in that
The construction method includes the following steps：
According to the water body amount of bored concrete pile foundation pit, the thickener that concentration of aqueous solution is 0.1-0.25% is added into water；
The lower end of conduit is inserted into water and the fixed frame by being arranged above bored concrete pile foundation pit fixes conduit；
By the way that the hopper in catheter tip is arranged with 0.6m3The speed of/min pours claim 1-9 such as into bored concrete pile foundation pit and appoints
Concrete described in one.
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| CN110041036A (en) * | 2019-03-20 | 2019-07-23 | 安徽理工大学 | A kind of alkali-activated carbonatite concrete material being specially adapted for underwater casting |
| CN110054434A (en) * | 2019-06-05 | 2019-07-26 | 杭州中齐新材料科技有限公司 | A kind of non-dispersible underwater concrete flocculant |
| CN110981306A (en) * | 2019-12-17 | 2020-04-10 | 广东省水利水电第三工程局有限公司 | Concrete for cast-in-place pile and preparation method thereof |
| CN112028568A (en) * | 2020-08-10 | 2020-12-04 | 青岛鑫岩建材有限公司 | Underwater non-diffusion concrete and preparation method thereof |
| CN112851276A (en) * | 2021-02-23 | 2021-05-28 | 中建商品混凝土有限公司 | Light underwater undispersed plugging concrete and preparation method thereof |
| CN113955968A (en) * | 2021-10-09 | 2022-01-21 | 河南漏行天下工程技术有限公司 | Underwater undispersed grouting material |
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| CN110041036A (en) * | 2019-03-20 | 2019-07-23 | 安徽理工大学 | A kind of alkali-activated carbonatite concrete material being specially adapted for underwater casting |
| CN110054434A (en) * | 2019-06-05 | 2019-07-26 | 杭州中齐新材料科技有限公司 | A kind of non-dispersible underwater concrete flocculant |
| CN110981306A (en) * | 2019-12-17 | 2020-04-10 | 广东省水利水电第三工程局有限公司 | Concrete for cast-in-place pile and preparation method thereof |
| CN112028568A (en) * | 2020-08-10 | 2020-12-04 | 青岛鑫岩建材有限公司 | Underwater non-diffusion concrete and preparation method thereof |
| CN112028568B (en) * | 2020-08-10 | 2021-12-10 | 青岛鑫岩建材有限公司 | Underwater non-diffusion concrete and preparation method thereof |
| CN112851276A (en) * | 2021-02-23 | 2021-05-28 | 中建商品混凝土有限公司 | Light underwater undispersed plugging concrete and preparation method thereof |
| CN113955968A (en) * | 2021-10-09 | 2022-01-21 | 河南漏行天下工程技术有限公司 | Underwater undispersed grouting material |
| CN115677260A (en) * | 2022-10-18 | 2023-02-03 | 中建西部建设(广东)有限公司 | Additive for slow-setting type underwater undispersed concrete and preparation method thereof |
| CN115784691A (en) * | 2022-12-15 | 2023-03-14 | 杭州每步材料科技有限公司 | Underwater sealant for concrete and preparation method thereof |
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