CN106866077A - A kind of immersed tube joint grouting concrete and preparation method thereof - Google Patents

A kind of immersed tube joint grouting concrete and preparation method thereof Download PDF

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Publication number
CN106866077A
CN106866077A CN201710149688.3A CN201710149688A CN106866077A CN 106866077 A CN106866077 A CN 106866077A CN 201710149688 A CN201710149688 A CN 201710149688A CN 106866077 A CN106866077 A CN 106866077A
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China
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concrete
immersed tube
tube joint
joint grouting
grouting concrete
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Inventor
周绍豪
阳俊
刘可心
刘豪雨
汪华文
高凡
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CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
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CCCC Wuhan Harbour Engineering Design and Research Institute Co Ltd
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Priority to CN201710149688.3A priority Critical patent/CN106866077A/en
Publication of CN106866077A publication Critical patent/CN106866077A/en
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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
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00293—Materials impermeable to liquids
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
    • 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
    • C04B2111/24—Sea water resistance
    • 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
    • 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
    • C04B2111/56—Compositions suited for fabrication of pipes, e.g. by centrifugal casting, or for coating concrete pipes
    • 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
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Sealing Material Composition (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a kind of immersed tube joint grouting concrete, including percentage by weight following components：25 50% concrete admixtures, 5 20% inert powders, 1 ~ 2% water reducer, 0.2 ~ 0.5% anti-dispersant, 1 ~ 5% thickener, 5 8% swelling agents, other Binder Materials and water；Wherein, total consumption of all Binder Materials is 450 500kg/m3, water-cement ratio 0.34 0.45；The partial properties of concrete are as follows：Slump flow test is 600 700mm；It is not dispersed under water：Cement number of dropouts is less than 3.0%, and suspended things content is less than 150mg/L, and bleeding rate is zero；Described concrete admixture refers to：One or more in flyash, granulated blast-furnace ore deposit；Described inert powder refers to：A kind of composition or several compositions in agstone, gangue, zeolite powder and quartzy fine powder.Immersed tube joint grouting concrete of the invention has the characteristic for preferably resisting seawater scouring in marine environment, component pore filling can be made full, it is to avoid cavity, is had outstanding performance the aspects such as sea water intrusion are prevented.

Description

A kind of immersed tube joint grouting concrete and preparation method thereof
Technical field
The invention belongs to civil engineering construction field, it is related to a kind of ocean engineering tube coupling girder injecting paste material under water, especially It is related to a kind of maritime concrete mixture, it is adaptable to narrow and small closing space slip casting under briny environment.The concrete have flowing high, Low dispersion, corrosion-resistant, microdilatancy characteristic, construction application feedback is good under briny environment.
Background technology
Domestic existing immersed tube is in fresh water environment joint more under water at present, and mortar or common coagulation are used injecting paste material more Soil.Under marine environment, coherency is poor under water for injecting paste material, empty hole easily occurs, seawater corrosion is faced, to structural defence Not enough, narrow and small closing space slip casting requirement under briny environment can not be met.
The state of current in marine environment, and the concentration of various ions is significantly different than general fresh water in water body Environment, the severe water body environment for needing to resist after concrete setting proposes high requirement, therefore urgent need one kind can The concrete special of the effective corrosiveness for solving various ocean ions in marine environment.
The content of the invention
It is an object of the invention to overcome normal concrete mortar to be in the prior art difficult to meet ocean water body complex environment The requirement of lower application, the coherency for existing is poor, easily by the deficiency of seawater corrosion, there is provided the immersed tube used in a kind of briny environment connects Head girder grouting concrete mixture, with meet abyssal environment sinking pipe joint girder slip casting plumpness, do not disperse, it is corrosion-resistant, Impermeabilisation, the requirement of microdilatancy.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of immersed tube joint grouting concrete, including percentage by weight following components：25-50% concrete admixtures, 5-20% inert powders, 1~2% water reducer, 0.2~0.5% anti-dispersant, 1~5% thickener, 5-8% swelling agents, other Binder Materials and water.
Wherein, total consumption of all Binder Materials is 450-500kg/m3, water-cement ratio 0.34-0.45.
(part) performance of concrete is as follows：Slump flow test is 600-700mm, not dispersed under water：Cement number of dropouts Less than 3.0%, suspended things content is less than 150mg/L, and bleeding rate is zero.Preferably, preferably suspended things content 50-120mg/L.
Described concrete admixture refers to：One or more in flyash, granulated blast-furnace ore deposit.
Described inert powder refers to：Agstone, gangue, zeolite powder, quartzy fine powder etc., can be one kind of the above Composition or several compositions.
Immersed tube joint grouting concrete of the invention be inventor by substantial amounts of experimental study find with excellent spy The immersed tube joint grouting concrete of the suitable submerged applications of property, with good mobility, not dispersed, corrosion resistance and micro- swollen Swollen property, meets the performance requirements of immersed tube joint grouting concrete in briny environment, ensure that the full of grouting concrete Degree, sealing, play good immersed tube joint protective effect, and the quality effect for improving ocean Underwater Engineering is notable.In the present invention Other Binder Materials refer to the routine Binder Materials such as portland cement；Wherein, the total amount of all Binder Materials is calculated and included： Flyash, ground granulated blast furnace slag, other gel rubber materials (conventional Binder Materials, such as cement) etc..Flyash fine coal containing high-quality Ash.Preferably, described other gel rubber materials are cement, particularly portland cement etc..
Grouting concrete of the invention mixes appropriate inert powder, improves volume stability of concrete so that coagulation Good anti-impact is shown during native construction application under water dissipate ability.Meanwhile, appropriate swelling agent is also mixed, by optimization Swelling agent application, preferably ensure that concrete after the setting for enclosed environment produce microdilatancy structure is more encrypted It is real, play outstanding closely knit enclosed construction effect, the strict leakage problems for preventing Underwater Engineering Structure.
Further, described immersed tube joint grouting concrete is the concrete that strength grade is C30-C50.By additive Composition and volume are adjusted, and balance the mobility and dispersion resistance energy of concrete, it is possible to achieve the optimization of every characteristic of concrete Adjustment, is allowed to strength grade and meets engineering demand, controls its characteristic more to optimize rationally.
Further, the chloride diffusion coefficient of described immersed tube joint grouting concrete is less than 4.5 × 10-12m2/s.Especially Refer to 28d or 56d chloride diffusion coefficients.Grouting concrete of the invention has good chlorion isolation performance, Neng Gougeng Chlorine ion concentration is high under good reply marine environment reclaimed water, and osmosis is strong, and the framework of steel reinforcement structure for Underwater Engineering is provided More preferable protective effect.Preferably chloride diffusion coefficient is less than 3.5 × 10-12m2/s.Chloride diffusion coefficient inspection of the invention Survey generally refers to the result that 28d or 56d after concrete final set are tested and analyzed, and refers to《Chloride Diffusion Coefficient in Concrete Analyzer》(JG/T262-2009) corresponding test analysis are carried out.
Further, described immersed tube joint grouting concrete water resistant oozes grade more than P12.Immersed tube joint slip casting of the invention Concrete has good water resistant Penetration Signature, can mortar depositing construction after provide good to corresponding Underwater Engineering main part Protective effect.
Further, the expansion rate of described immersed tube joint grouting concrete is 0.01%~0.04%.Slip casting of the invention Concrete has high fluidity, low dispersiveness, microdilatancy, is a kind of excellent the characteristics of anticorrosive, Anti-Chloride Ion Penetration is excellent Elegant extra large work immersed tube joint grouting concrete, coordinates FS final spice technique, and concrete can fill full, self waterproofing safety and stability.
Further, described water reducer is polycarboxylate water-reducer.Polycarboxylate water-reducer has consumption few, good excellent of effect Feature, can preferably reduce the ratio of mud, improve the intensity and durability of concrete, and particularly preferably application poly-carboxylic high-performance subtracts Aqua.
Further, described water reducer, anti-dispersant, thickener and swelling agent are mixed by complex process Compound additive.The compound additive mixed by complex process is had and is uniformly dispersed, using convenient, in grouting concrete With good chemiluminescence, each component can be preferably given play to and increase for the performance of the grouting concrete of submerged applications Strong or facilitation.Using the performance that can have preferably given play to additive after several additives are mixed, improve The quality grade of concrete.
Further, the education resistance energy of described immersed tube joint grouting concrete：Laitance percentage is not more than 15%.This hair Bright immersed tube joint grouting concrete coordinates suitable into component selections, with good synergistic function, can be good at control The underwater isolation amount of concrete, it is ensured that the ability water that concrete is designed in can showing experimentation during application It is flat.
Further, the pH value of described immersed tube joint grouting concrete is not less than 12, and effectively its inner structure can be carried out Protection, suppression steel bar corrosion.Alkaline concrete main body material can preferably for reinforcing bar, working environment provides good under water Protection, on the basis of the ultralow chloride diffusion coefficient of concrete, is formed in rebar surface by concrete alkaline pH and is passivated Protective layer, improves life-span and the long-time stability of concrete.
Further, described swelling agent is to meet JC476-2001《Cement expansive material》The swelling agent of regulation.It is described swollen Swollen dose of alkali content≤0.75%.For example, aluminium sulfate expanding agent can be selected.
Washing away for water can be effectively resisted in immersed tube joint grouting concrete construction of the invention, the loss of glue material is reduced, from And the pollution to waters of constructing is reduced, it is a kind of Novel environment-friendlymaterial material.
Compared with prior art, beneficial effects of the present invention：
1. the slump flow test of immersed tube joint grouting concrete of the invention is 600-700mm, in marine environment, can be made Component pore filling is full, it is to avoid cavity.
2. immersed tube joint grouting concrete of the invention is not dispersed under water：Cement number of dropouts is less than 3.0%, and suspended things contain Amount is less than 150mg/L, and bleeding rate is zero, and working condition is extremely outstanding under concrete water, its long service life in marine environment, Component can be formed and be effectively protected, as a kind of extra large work novel slurry filling material, prevent sea water intrusion (resisting chloride ion penetration, water resistant Ooze), compared with common material ratio, cost performance is higher.
3. immersed tube joint grouting concrete of the invention can produce 0.01%~0.04% expansion effect after hardening under water, Ensure the tight connection of concrete and slip casting component.
4th, substantial amounts of industrial waste has been selected in immersed tube joint grouting concrete raw material of the invention, has not only realized coagulation Coherency is strong under water for soil, there is the characteristic for preferably resisting seawater scouring, and slurry number of dropouts is few, is a kind of outstanding environment-friendly type Green engineering material.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood For the scope of above-mentioned theme of the invention is only limitted to following embodiment, all technologies realized based on present invention belong to this The scope of invention.Not specified percentage is typically weight percentage in the present invention.
Embodiment 1
Immersed tube joint grouting concrete, by following percentage by weight into being grouped into：Immersed tube joint grouting concrete, by with Lower percentage by weight into being grouped into：200kg portland cements, 100kg flyash, 75kg granulated blast-furnaces ore deposit, 20kg lime stones Powder, 20kg gangues, 10kg zeolite powders, 40kg swelling agents, 1.5kg anti-dispersants, 2kg thickeners, 156kg drinking water, 5.0kg , first be well mixed for sandstone by high performance water reducing agent of polyocarboxy acid, natural sand 760kg, rubble 980kg, and add water stirring 3 after input powder Minute, you can grouting concrete is obtained, its partial properties is as follows：Slump flow test is 680mm, 7d compression strength 45.9MPa, 28d compression strength 62.8MPa, 28d resisting chloride ion penetration diffusion coefficient 2.8 × 10-12m2/ s, it is not dispersed under water：Cement number of dropouts 2.0%, suspended things content 60mg/L, bleeding rate is zero.
Embodiment 2-6
The immersed tube joint grouting concrete of the present embodiment is similar with the concrete that embodiment 1 is provided, its material composition Application percentage and partial test results of property are as shown in the table.
The concrete composition proportioning and testing partial performances result (unit of the embodiment 2-6 of table 1：kg)
Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6
Portland cement 260 200 200 190 150
Flyash 30 130 70 100 130
Granulated blast-furnace ore deposit 75 80 100 140 120
Agstone 50 20 40 0 0
Gangue 0 30 0 0 25
Zeolite powder 0 0 10 50 25
Quartzy fine powder 0 0 10 10 0
Water reducer 5 5 4 6 5
Anti-dispersant 2.0 1.9 0.2 0.5 0.3
Thickener 2 2 2 1 5
Swelling agent 50 40 40 25 30
Water consumption 160 150 165 140 130
Slump flow test 600mm 580mm 700mm 620mm 540mm
Cement number of dropouts 3.0% 2.3% 4.0% 3.5% 1.0%
Suspended things content 80mg/L 67mg/L 120mg/L 90mg/L 43mg/L
28d chloride diffusion coefficients
28d compression strength 60.9MPa 62.6MPa 56.8MPa 58.3MPa 66.2MPa
Be can be seen that when the various composition ratio control included in the application of concrete exists by the data with upper table 1：25- 50% concrete admixture, 5-20% inert powders, 1~2% water reducer, 0.2~0.5% anti-dispersant, 1~5% thickener, The consumption of 5-8% swelling agents, Binder Materials and water, wherein Binder Materials is 450-500kg/m3, water-cement ratio 0.34-0.45 scopes When interior, grouting concrete it is functional, can have dispersion resistance energy and endurance quality higher, while its appropriateness Microdilatancy characteristic, can meet abyssal environment sinking pipe joint girder slip casting plumpness, do not disperse, corrosion-resistant, impermeabilisation, microdilatancy Requirement
Embodiment 7-11
The immersed tube joint grouting concrete of the present embodiment is similar with the concrete that embodiment 1 is provided, configuration concrete Process is as follows：Sandstone powder is dry-mixed uniform, 1/3rd water and additive appropriateness mix are subsequently adding, subsequently add remaining Water, mix 2min obtains homogeneous concrete, and the application percentage and partial test results of property of its material composition are as follows Shown in table.
The concrete composition proportioning and testing partial performances result of the embodiment 7-11 of table 2
Embodiment 7 Embodiment 8 Embodiment 9 Embodiment 10 Embodiment 11
Portland cement 120 160 250 300 200
Flyash 160 120 130 20 100
Granulated blast-furnace ore deposit 40 50 130 150 100
Agstone 0 0 100 0 0
Gangue 10 100 0 30 60
Zeolite powder 0 0 0 10 0
Quartzy fine powder 30 20 0 0 0
Water reducer 8 5 2 7 5
Anti-dispersant 3 2 1 5 2
Thickener 4 3 2 3 6
Swelling agent 20 50 100 0 40
Water consumption 160 150 167 140 150
Slump flow test 660mm 570mm 660mm 700mm 690mm
Cement number of dropouts 2.7% 2.9% 3.7% 1.7% 2.5%
Suspended things content 53mg/L 56mg/L 110mg/L 70mg/L 30mg/L
28d chloride diffusion coefficients
28d compression strength 50.9MPa 67.6MPa 72.8MPa 66.3MPa 63.2MPa
Be can be seen that when the various composition ratio control included in the application of concrete exists by the data with upper table 2：25- 50% concrete admixture, 5-20% inert powders, 1~2% water reducer, 0.2~0.5% anti-dispersant, 1~5% thickener, The consumption of 5-8% swelling agents, Binder Materials and water, wherein Binder Materials is 450-500kg/m3, water-cement ratio 0.34-0.45 scopes When interior, grouting concrete it is functional, can have dispersion resistance energy and endurance quality higher, while its appropriateness Microdilatancy characteristic, can meet abyssal environment sinking pipe joint girder slip casting plumpness, do not disperse, corrosion-resistant, impermeabilisation, microdilatancy Requirement
Comparative example 1-4
The immersed tube joint grouting concrete of comparative example 1-4 is similar to the concrete preparation process that embodiment 7-11 is provided, and matches somebody with somebody The process for putting concrete is as follows：Sandstone powder is dry-mixed uniform, 1/3rd water and additive appropriateness mix are subsequently adding, then so After add remaining water, mix 2min obtains homogeneous concrete, the application percentage and partial test of its material composition Energy result is as shown in the table.
The concrete composition proportioning and testing partial performances result of the comparative example 1-4 of table 3
Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4
Portland cement 170 180 160 310
Flyash 160 90 0 0
Granulated blast-furnace ore deposit 0 0 130 80
Agstone 0 0 50 0
Gangue 30 0 0 10
Zeolite powder 0 45 0 10
Quartzy fine powder 10 0 0 10
Water reducer 6 7 5 7
Anti-dispersant 2 2 3 4
Thickener 3 3 4 3
Swelling agent 30 40 50 10
Water consumption 170 150 170 165
Slump flow test 620mm 660mm 680mm 550mm
Cement number of dropouts 3.7% 3.5% 3.1% 3.8%
Suspended things content 190mg/L 160mg/L 110mg/L 70mg/L
28d chloride diffusion coefficients
28d compression strength 51.1MPa 48.9MPa 50.8MPa 53.9MPa
The concrete of the immersed tube joint grouting concrete application of comparative example 1-4 preparations is can be seen that by the data with upper table When admixture, inert powder, Binder Materials and water ratio change, the combination property of concrete occurred in that and significantly drop It is low, it is difficult to meet the performance requirement of the expected immersed tube joint grouting concrete of the present invention.It can be seen that, immersed tube slip casting of the invention Concrete has good mobility, under water not dispersed, erosion-resisting characteristics etc., and the components matching ratio with concrete has emphatically The relation wanted, is not that the formula components of any selection adjustment concrete are capable of achieving expected effect.If using contrast Concrete described in example 1-4 require in being difficult to meet the construction of immersed tube joint, especially for special-shaped narrow and small enclosed construction and compared with The special circumstances used under deep water.The aspects such as the corrosion penetration for chlorion in seawater scouring, seawater can not reach engineering It is required that rank, it is impossible to suitable for operating mode of the invention.

Claims (10)

1. a kind of following components of immersed tube joint grouting concrete, including percentage by weight：25-50% concrete admixtures, 5- 20% inert powder, 1 ~ 2% water reducer, 0.2 ~ 0.5% anti-dispersant, 1 ~ 5% thickener, 5-8% swelling agents, other Binder Materials and Water；
Wherein, total consumption of all Binder Materials is 450-500kg/m3, water-cement ratio 0.34-0.45；
The performance of concrete is as follows：
Slump flow test is 600-700mm；
It is not dispersed under water：Cement number of dropouts is less than 3.0%, and suspended things content is less than 150mg/L, and bleeding rate is zero；
Described concrete admixture refers to：One or more in flyash, granulated blast-furnace ore deposit；
Described inert powder refers to：A kind of composition in agstone, gangue, zeolite powder and quartzy fine powder or it is several into Point.
2. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete is Strength grade is the concrete of C30-C50.
3. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete Chloride diffusion coefficient is less than 4.5 × 10-12m2/s。
4. immersed tube joint grouting concrete as claimed in claim 3, it is characterised in that chloride diffusion coefficient is less than 3.5 × 10-12m2/s。
5. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete resists Water oozes grade more than P12.
6. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete Expansion rate is 0.01% ~ 0.04%.
7. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described water reducer is polycarboxylic acids diminishing Agent.
8. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described water reducer, anti-dispersant, thickening Agent and swelling agent are the compound additives mixed by complex process.
9. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete Education resistance energy：Laitance percentage is not more than 15%.
10. immersed tube joint grouting concrete as claimed in claim 1, it is characterised in that described immersed tube joint grouting concrete PH value be not less than 12.
CN201710149688.3A 2017-03-14 2017-03-14 A kind of immersed tube joint grouting concrete and preparation method thereof Pending CN106866077A (en)

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CN108675710A (en) * 2018-04-25 2018-10-19 中国电力科学研究院有限公司 A kind of non-dispersible underwater concrete and its construction method
CN109987896A (en) * 2017-12-31 2019-07-09 中国人民解放军63653部队 The high-strength micro-expansion cement base grouting material of low-heat
CN112299796A (en) * 2020-12-01 2021-02-02 宁波中淳高科股份有限公司 Wall pile inter-pile grouting material for building envelope and construction method thereof
CN112592127A (en) * 2020-12-16 2021-04-02 江苏诺邦建材有限公司 Slow-release grouting material for steel shell immersed tube grouting and construction method thereof
CN112759320A (en) * 2020-12-21 2021-05-07 中国石油大学(华东) High-fluidity low-density grouting material for offshore wind power suction pile foundation

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CN104211358A (en) * 2014-09-11 2014-12-17 中国中材国际工程股份有限公司 Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof
CN104692730A (en) * 2015-02-16 2015-06-10 中交武汉港湾工程设计研究院有限公司 Fair-faced concrete and application thereof
CN104743995A (en) * 2015-03-19 2015-07-01 中国水利水电第七工程局有限公司 High-strength concrete cementitious composition and high-strength concrete thereof

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CN102180628A (en) * 2011-03-02 2011-09-14 中国科学院武汉岩土力学研究所 High-strength micro-expansion prestress anchoring grouting material and preparation method thereof
CN104211358A (en) * 2014-09-11 2014-12-17 中国中材国际工程股份有限公司 Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109987896A (en) * 2017-12-31 2019-07-09 中国人民解放军63653部队 The high-strength micro-expansion cement base grouting material of low-heat
CN108675710A (en) * 2018-04-25 2018-10-19 中国电力科学研究院有限公司 A kind of non-dispersible underwater concrete and its construction method
CN112299796A (en) * 2020-12-01 2021-02-02 宁波中淳高科股份有限公司 Wall pile inter-pile grouting material for building envelope and construction method thereof
CN112592127A (en) * 2020-12-16 2021-04-02 江苏诺邦建材有限公司 Slow-release grouting material for steel shell immersed tube grouting and construction method thereof
CN112592127B (en) * 2020-12-16 2022-09-16 江苏诺邦建材有限公司 Slow-release grouting material for steel shell immersed tube grouting and construction method thereof
CN112759320A (en) * 2020-12-21 2021-05-07 中国石油大学(华东) High-fluidity low-density grouting material for offshore wind power suction pile foundation

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Application publication date: 20170620