CN109020423A - A kind of high resistance to corrosion self-compacting concrete for ocean engineering - Google Patents
A kind of high resistance to corrosion self-compacting concrete for ocean engineering Download PDFInfo
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- CN109020423A CN109020423A CN201811219662.2A CN201811219662A CN109020423A CN 109020423 A CN109020423 A CN 109020423A CN 201811219662 A CN201811219662 A CN 201811219662A CN 109020423 A CN109020423 A CN 109020423A
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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
- C04B28/06—Aluminous 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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
- C04B2111/24—Sea water resistance
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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
- 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
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of high resistance to corrosion self-compacting concretes for ocean engineering.The raw material prepared including following weight: ante-sulphoaluminate cement 400-450 kg/m3；Levigate quartz sand 50-100 kg/m3；Washed-out sand 650-800 kg/m3；Rubble 950-1100 kg/m3；Boric acid or sodium tetraborate 6-8 kg/m3；Redispersable latex 4-6kg/m3；Polycarboxylate water-reducer 8-10 kg/m3；Sulphite 2-4 kg/m3；Sorbierite 1-5 kg/m3；Water 157-209kg/m3.Additive outstanding advantages produced by the present invention are: concrete initial extension degree can reach 600mm or more, and be able to maintain 2h divergence free of losses；Endurance performance of concrete is good, and seepage-resistant grade reaches P30, and resisting erosion of sulfate grade reaches KS150, and the RCM method resisting chloride ion penetration diffusion coefficient of 90d age is less than 1.1 × 10-12m2/s；Early strength of concrete is high, and 1d intensity reaches 50MPa or more, later strength sustainable growth；Phenomena such as concrete system is stablized, no isolation, bleeding.
Description
Technical field
The present invention relates to building material technical field more particularly to a kind of high resistance to corrosion self-compaction coagulations for ocean engineering
Soil.
Background technique
With the national formal national strategic aim for proposing construction ocean power, more and more bridge spanning the seas, harbour port
The ocean engineerings such as mouth, permanent islands and reefs start to prepare construction.Since maritime environment is severe, and large scale structure arrangement of reinforcement is intensive, is not easy to shake
It smashes, once concrete vibrating leakiness, concrete structure is loose, will result in concrete durability reduction, influencing building makes
Use the service life.Meanwhile there are also a large amount of Cl in ocean-、SO4 2-Plasma, these ions can all cause the erosion damage of concrete.
The patent of entitled " a kind of self-compacting concrete (Chinese patent application publication No.: CN101805160A) " discloses
A technique for replace natural aggregate to match preparation, regeneration self-compacting concrete using waste ceramic, which, which does not embody to prepare, mixes
The Specific construction performance for coagulating soil, to the industrial applications of self-compacting concrete without reference to value.
Entitled " a kind of superfluidity self-compacting concrete and preparation method thereof (Chinese patent application publication No.:
CN105016671A patent) " discloses a kind of superfluidity self-compacting concrete and preparation method thereof.What the invention mainly solved
Technical problem is to provide a kind of self-compacting concrete of superfluidity, does not have the ability of resistant to sea water erosion, therefore program system
Standby concrete is not used to ocean engineering.
Therefore, on the one hand the self-compacting concrete for preparing a kind of high resistance to corrosion can reduce labor intensity of workers, without vibrating
Also it is closely knit to be able to achieve structure；On the other hand, the resistant to sea water erosion performance of concrete is improved, concrete durability improves, building
Service life extends, and can save a large amount of maintenance, reconstruction funds.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of high resistance to corrosion self-compacting concretes for ocean engineering.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of high resistance to corrosion self-compacting concrete for ocean engineering, the raw material prepared including following weight:
Ante-sulphoaluminate cement 400-450 kg/m3；
Levigate quartz sand 50-100 kg/m3；
Washed-out sand 650-800 kg/m3；
Rubble 950-1100 kg/m3；
Boric acid or sodium tetraborate 6-8 kg/m3；
Redispersable latex powder 4-6 kg/m3；
Polycarboxylate water-reducer 8-10 kg/m3；
Sulphite 2-4 kg/m3；
Sorbierite 1-5 kg/m3；
Water 157-209kg/m3。
Preferably, the high resistance to corrosion self-compacting concrete for ocean engineering, the component including following parts by weight:
Ante-sulphoaluminate cement 420-450 kg/m3；
Levigate quartz sand 70-90 kg/m3；
Washed-out sand 700-780 kg/m3；
Rubble 1000-1100 kg/m3；
Boric acid or sodium tetraborate 7-8 kg/m3；
Redispersable latex powder 5-6 kg/m3；
Polycarboxylate water-reducer 9-10 kg/m3；
Sulphite 3-4 kg/m3；
Sorbierite 3-4 kg/m3；
Water 186-205kg/m3。
Preferably, tricalcium silicate content is not more than 5% in the ante-sulphoaluminate cement.
Preferably, the levigate quartz sand average grain diameter is less than 3 microns.
Preferably, the washed-out sand gradation distribution: 4.75mm square hole screen is accumulative to tail over 0 ~ 5%；2.36mm square hole screen is tired
Meter tails over 5 ~ 20%；1.18mm square hole screen is accumulative to tail over 15 ~ 45%；0.6mm square hole screen is accumulative to tail over 45 ~ 60%；0.3mm square hole screen
It is accumulative to tail over 75 ~ 90%；0.15mm square hole screen is accumulative to tail over 90% ~ 100%.
Preferably, the macadam gradating distribution: 16mm square hole screen is accumulative to tail over 0 ~ 10%；The accumulative sieve of 9.5mm square hole screen
Remaining 30 ~ 50%；4.75mm square hole screen is accumulative to tail over 85 ~ 100%；2.36mm square hole screen is accumulative to tail over 95 ~ 100%.
Preferably, the polycarboxylic acids water reducing type mother liquor solid content is 40%.
Preferably, the redispersable latex powder is ethylene-vinyl acetate copolymer, vinylacetate-versatic acid second
One of enoate copolymer or acrylic styrene copolymer.
Preferably, the nitrite is one of sodium nitrite or calcium nitrite.
Preferably, the preparation method of the high resistance to corrosion self-compacting concrete for ocean engineering, comprising the following steps:
Step 1: weighing each component according to the proportion；
Step 2: polycarboxylate water-reducer, sorbierite, boric acid or sodium tetraborate, redispersable latex powder and sulphite are added water
3min or more is mixed afterwards；
Step 3: by ante-sulphoaluminate cement, washed-out sand, rubble, levigate quartz sand stirred in blender 5min with
On；
Step 4: mixed liquor made from step 2 is added in mixing material made from step 3,5min or more is stirred, that is, is made
The high resistance to corrosion self-compacting concrete of handy Yu Haiyang engineering.
The work of several main raw material(s)s is now used as following elaboration by technical solution of the present invention for ease of understanding:
1. the present invention is using ante-sulphoaluminate cement as major gelled material.Ante-sulphoaluminate cement is that one kind contains
The sulphate aluminium cement of tricalcium silicate, compared to common sulphate aluminium cement, its setting time is shorter, and (10min be can reach
Initial set), early strength is higher (1d intensity can achieve 50MPa), and later strength constantly increases.Since it contains alite
Phase, compared to common sulphate aluminium cement, its resistant to sea water erosiveness is stronger, can be used as the dedicated highly resistance of reliable ocean engineering
Lose cement；
2. the present invention is using levigate quartz sand as packing material.The average grain diameter of levigate quartz sand is at 3 microns hereinafter, can be fine
Make up the insufficient defect of cement small size particle.According to closestpacking principle, after levigate quartz sand is added, concrete is popular
Property increase, concrete structure compactness increases substantially, and porosity significantly reduces；
3. the present invention is using boric acid or sodium tetraborate as slow setting component.The Ca in boric acid molecules of salt and solution in sodium tetraborate2+Shape
At complex compound, to inhibit Ca2+Crystallization is precipitated.Complex compound is mainly with C3A·3Ca(BO2)2·H2The form of O is in cement granules
Surface forms one layer of unbodied barrier layer, so that the aquation of cement and crystallization delayed to be precipitated；
4. the cracking resistance component of high resistance to corrosion self-compacting concrete of the present invention using redispersable latex powder as ocean engineering.It can divide again
It dissipates and forms a film after latex powder is dispersed in cement and play humidification as second of adhesive, protecting colloid is by concrete bodies
System absorbs (will not be fallen by water destruct after film forming, or " twice dispersing "), and the fluoropolymer resin to form a film is distributed as reinforcing material
In entire concrete system, to increase the cohesive force of concrete, concrete cracking is prevented；
5. the present invention is using nitrite as accelerating component.Nitrite can accelerate the hydration process of cement, these salts can not only
It as the early strength agent component of concrete, and can be used as the use of concrete antifreezer component, fundamentally overcome concrete
Middle alkali and the defect of electrochemical corrosion improve the physical and mechanical property and durability of concrete, to obtain
Good concrete；
6. the anti-isolation of the invention using sorbierite as concrete, bleeding component.Sorbierite has certain sequestering power, and has
Stronger auxiliary fluid effect.In actual use, be added the component fresh concrete it is soft be not adhered, no isolation, bleeding etc.
Phenomenon occurs.
Compared with prior art, the invention has the benefit that
1. concrete initial extension degree can reach 600mm or more, and be able to maintain 2h divergence free of losses；
2. endurance performance of concrete is good, seepage-resistant grade reaches P30, and resisting erosion of sulfate grade reaches KS150, the RCM of 90d age
Method resisting chloride ion penetration diffusion coefficient is less than 1.1 × 10-12m2/s；
3. early strength of concrete is high, 1d intensity reaches 50MPa or more, later strength sustainable growth；
Phenomena such as 4. concrete system is stablized, no isolation, bleeding.
Specific embodiment
The present invention will be further described with reference to embodiments, but the invention is not limited to these embodiments.
Embodiment 1
A kind of high resistance to corrosion self-compacting concrete for ocean engineering, by weight percentage, including following components:
The high resistance to corrosion self-compacting concrete for ocean engineering, the component including following parts by weight:
420 kg/m of ante-sulphoaluminate cement3；
Levigate 70 kg/m of quartz sand3；
780 kg/m of washed-out sand3；
1000 kg/m of rubble3；
7 kg/m of boric acid or sodium tetraborate3；
6 kg/m of redispersable latex powder3；
10 kg/m of polycarboxylate water-reducer3；
4 kg/m of sulphite3；
3 kg/m of sorbierite3；
186 kg/m of water3。
Tricalcium silicate content is 4% in the ante-sulphoaluminate cement；The levigate quartz sand average grain diameter is 2.8
Micron；The washed-out sand gradation distribution: 4.75mm square hole screen is accumulative to tail over 3%；2.36mm square hole screen is accumulative to tail over 12%；
1.18mm square hole screen is accumulative to tail over 37%；0.6mm square hole screen is accumulative to tail over 56%；0.3mm square hole screen is accumulative to tail over 86%；0.15mm
Square hole screen is accumulative to tail over 100%；The macadam gradating distribution: 16mm square hole screen is accumulative to tail over 8%；9.5mm square hole screen is accumulative
Tail over 32%；4.75mm square hole screen is accumulative to tail over 86%；2.36mm square hole screen is accumulative to tail over 100%；The polycarboxylic acids water reducing type mother liquor
Solid content is 40%；The redispersable latex powder is ethylene-vinyl acetate copolymer；The nitrite is calcium nitrite.
A kind of preparation process of the high resistance to corrosion self-compacting concrete for ocean engineering carries out as follows:
Step 1: weighing each component according to the proportion；
Step 2: mixing 3min after polycarboxylate water-reducer, sorbierite, boric acid, redispersable latex powder and sulphite are added water
More than；
Step 3: by ante-sulphoaluminate cement, washed-out sand, rubble, levigate quartz sand stirred in blender 5min with
On；
Step 4: mixed liquor made from step 2 is added in mixing material made from step 3,5min or more is stirred, that is, is made
The high resistance to corrosion self-compacting concrete of handy Yu Haiyang engineering.
Embodiment 2
A kind of high resistance to corrosion self-compacting concrete for ocean engineering, by weight percentage, including following components:
The high resistance to corrosion self-compacting concrete for ocean engineering, the component including following parts by weight:
435 kg/m of ante-sulphoaluminate cement3；
Levigate 80 kg/m of quartz sand3；
740 kg/m of washed-out sand3；
1050 kg/m of rubble3；
7.5 kg/m of boric acid or sodium tetraborate3；
6.5 kg/m of redispersable latex powder3；
10 kg/m of polycarboxylate water-reducer3；
3.5 kg/m of sulphite3；
3.5 kg/m of sorbierite3；
196 kg/m of water3。
Tricalcium silicate content is 4% in the ante-sulphoaluminate cement；The levigate quartz sand average grain diameter is 2.8
Micron；The washed-out sand gradation distribution: 4.75mm square hole screen is accumulative to tail over 3%；2.36mm square hole screen is accumulative to tail over 12%；
1.18mm square hole screen is accumulative to tail over 37%；0.6mm square hole screen is accumulative to tail over 56%；0.3mm square hole screen is accumulative to tail over 86%；0.15mm
Square hole screen is accumulative to tail over 100%；The macadam gradating distribution: 16mm square hole screen is accumulative to tail over 8%；9.5mm square hole screen is accumulative
Tail over 32%；4.75mm square hole screen is accumulative to tail over 86%；2.36mm square hole screen is accumulative to tail over 100%；The polycarboxylic acids water reducing type mother liquor
Solid content is 40%；The redispersable latex powder is ethylene-vinyl acetate copolymer；The nitrite is calcium nitrite.
A kind of preparation process of the high resistance to corrosion self-compacting concrete for ocean engineering carries out as follows:
Step 1: weighing each component according to the proportion；
Step 2: mixing 3min after polycarboxylate water-reducer, sorbierite, boric acid, redispersable latex powder and sulphite are added water
More than；
Step 3: by ante-sulphoaluminate cement, washed-out sand, rubble, levigate quartz sand stirred in blender 5min with
On；
Step 4: mixed liquor made from step 2 is added in mixing material made from step 3,5min or more is stirred, that is, is made
The high resistance to corrosion self-compacting concrete of handy Yu Haiyang engineering.
Embodiment 3
A kind of high resistance to corrosion self-compacting concrete for ocean engineering, by weight percentage, including following components:
The high resistance to corrosion self-compacting concrete for ocean engineering, the component including following parts by weight:
450 kg/m of ante-sulphoaluminate cement3；
Levigate 90 kg/m of quartz sand3；
700 kg/m of washed-out sand3；
1100 kg/m of rubble3；
8 kg/m of boric acid or sodium tetraborate3；
6 kg/m of redispersable latex powder3；
10 kg/m of polycarboxylate water-reducer3；
3 kg/m of sulphite3；
4 kg/m of sorbierite3；
205 kg/m of water3。
Tricalcium silicate content is 4% in the ante-sulphoaluminate cement；The levigate quartz sand average grain diameter is 2.8
Micron；The washed-out sand gradation distribution: 4.75mm square hole screen is accumulative to tail over 3%；2.36mm square hole screen is accumulative to tail over 12%；
1.18mm square hole screen is accumulative to tail over 37%；0.6mm square hole screen is accumulative to tail over 56%；0.3mm square hole screen is accumulative to tail over 86%；0.15mm
Square hole screen is accumulative to tail over 100%；The macadam gradating distribution: 16mm square hole screen is accumulative to tail over 8%；9.5mm square hole screen is accumulative
Tail over 32%；4.75mm square hole screen is accumulative to tail over 86%；2.36mm square hole screen is accumulative to tail over 100%；The polycarboxylic acids water reducing type mother liquor
Solid content is 40%；The redispersable latex powder is ethylene-vinyl acetate copolymer；The nitrite is calcium nitrite.
A kind of preparation process of the high resistance to corrosion self-compacting concrete for ocean engineering carries out as follows:
Step 1: weighing each component according to the proportion；
Step 2: mixing 3min after polycarboxylate water-reducer, sorbierite, boric acid, redispersable latex powder and sulphite are added water
More than；
Step 3: by ante-sulphoaluminate cement, washed-out sand, rubble, levigate quartz sand stirred in blender 5min with
On；
Step 4: mixed liquor made from step 2 is added in mixing material made from step 3,5min or more is stirred, that is, is made
The high resistance to corrosion self-compacting concrete of handy Yu Haiyang engineering.
Comparative example 1
A kind of marine engineering self-compacting high-performance concrete, the following component including following weight fraction:
52.5 ordinary portland cement 243kg/m3;
145.8 kg/m3 of flyash；
97.2 kg/m3 of slag powders;
901 kg/m3 of sand;
810 kg/m3 of stone;
170 kg/m3 of water;
7.78 kg/m3 of water-reducing agent.
Comparative example 2
A kind of marine engineering self-compacting high-performance concrete, the following component including following weight fraction:
52.5 ordinary portland cement 194.4kg/m3;
194.4 kg/m3 of flyash；
97.2 kg/m3 of slag powders;
896 kg/m3 of sand;
810 kg/m3 of stone;
170 kg/m3 of water;
7.53 kg/m3 of water-reducing agent.
Comparative example 3
A kind of marine engineering self-compacting high-performance concrete, the following component including following weight fraction:
52.5 ordinary portland cement 194.4kg/m3;
194.4 kg/m3 of flyash；
145.8 kg/m3 of slag powders;
886 kg/m3 of sand;
810 kg/m3 of stone;
170 kg/m3 of water;
7.53 kg/m3 of water-reducing agent.
Application implementation case
Concrete prepared by the embodiment of the present invention 1 ~ 3 and comparative example 1 ~ 3 is subjected to application performance comparative test.Agent on crack resistance of concrete pressure
Degree test is carried out according to " standard for test methods of mechanical properties of ordinary concrete " GB/T 50081-2002, concrete durability examination
It tests and is carried out according to " Standard for test methods of longterm performance and durability of ordinary concrete standard " GB/T50082-2009.
A kind of high resistance to corrosion self-compacting concrete implementation result for ocean engineering of table 1.
| Number | 1d compression strength (MPa) | Initial extension degree (mm) | 2h divergence (mm) |
| Embodiment 1 | 52.2 | 715 | 714 |
| Embodiment 2 | 56.6 | 722 | 721 |
| Embodiment 3 | 60.4 | 743 | 744 |
| Comparative example 1 | 18.2 | 720 | 547 |
| Comparative example 2 | 17.5 | 735 | 612 |
| Comparative example 3 | 19.4 | 740 | 589 |
A kind of high resistance to corrosion self-compacting concrete durability test effect for ocean engineering of table 2.
| Number | Seepage-resistant grade | Resisting erosion of sulfate grade | RCM method 90d chloride diffusion coefficient (× 10-12m2/ s) |
| Embodiment 1 | P30 | KS150 | 1.082 |
| Embodiment 2 | P30 | KS150 | 1.046 |
| Embodiment 3 | P30 | KS150 | 1.013 |
| Comparative example 1 | P16 | KS100 | 1.621 |
| Comparative example 2 | P16 | KS100 | 1.352 |
| Comparative example 3 | P16 | KS100 | 1.215 |
The above is only a preferred embodiment of the present invention, it is noted that come for those of ordinary skill in the art
It says, without departing from the concept of the premise of the invention, several modifications and variations can also be made, these belong to of the invention
Protection scope.
Claims (9)
1. a kind of high resistance to corrosion self-compacting concrete for ocean engineering, it is characterised in that: the raw material prepared including following weight:
Ante-sulphoaluminate cement 400-450 kg/m3；
Levigate quartz sand 50-100 kg/m3；
Washed-out sand 650-800 kg/m3；
Rubble 950-1100 kg/m3；
Boric acid or sodium tetraborate 6-8 kg/m3；
Redispersable latex powder 4-6 kg/m3；
Polycarboxylate water-reducer 8-10 kg/m3；
Sulphite 2-4 kg/m3；
Sorbierite 1-5 kg/m3；
Water 157-209kg/m3。
2. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: the A Li
Tricalcium silicate content is not more than 5% in spy-sulphate aluminium cement.
3. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: described levigate
Quartz sand average grain diameter is less than 3 microns.
4. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: the washing
Sand gradation distribution: 4.75mm square hole screen is accumulative to tail over 0 ~ 5%；2.36mm square hole screen is accumulative to tail over 5 ~ 20%；1.18mm square hole
Sieve is accumulative to tail over 15 ~ 45%；0.6mm square hole screen is accumulative to tail over 45 ~ 60%；0.3mm square hole screen is accumulative to tail over 75 ~ 90%；The side 0.15mm
Hole sizer is accumulative to tail over 90% ~ 100%.
5. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: the rubble
Gradation distribution: 16mm square hole screen is accumulative to tail over 0 ~ 10%；9.5mm square hole screen is accumulative to tail over 30 ~ 50%；4.75mm square hole screen is tired
Meter tails over 85 ~ 100%；2.36mm square hole screen is accumulative to tail over 95 ~ 100%.
6. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: the poly- carboxylic
Sour water reducing type mother liquor solid content is 40%.
7. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: it is described can be again
Dispersed latex powder is ethylene-vinyl acetate copolymer, vinylacetate-vinyl versatate copolymer or acrylate-benzene
One of ethylene copolymer.
8. the high resistance to corrosion self-compacting concrete according to claim 1 for ocean engineering, it is characterised in that: the nitrous
Hydrochlorate is one of sodium nitrite or calcium nitrite.
9. the preparation method of the described in any item high resistance to corrosion self-compacting concretes for ocean engineering of claim 1 ~ 8, including
Following steps:
Step 1: weighing each component according to the proportion；
Step 2: polycarboxylate water-reducer, sorbierite, boric acid or sodium tetraborate, redispersable latex powder and sulphite are added water
3min or more is mixed afterwards；
Step 3: by ante-sulphoaluminate cement, washed-out sand, rubble, levigate quartz sand stirred in blender 5min with
On；
Step 4: mixed liquor made from step 2 is added in mixing material made from step 3,5min or more is stirred, that is, is made
The high resistance to corrosion self-compacting concrete of handy Yu Haiyang engineering.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109914469A (en) * | 2019-04-13 | 2019-06-21 | 福州大学 | A kind of armored concrete mixed structure and its construction method |
| CN110451918A (en) * | 2019-08-28 | 2019-11-15 | 辽宁科大中驰镁建材科技有限公司 | A kind of boron mud chlorine oxygen magnesium marine ecology fish shelter and preparation method thereof |
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| CN110451918B (en) * | 2019-08-28 | 2021-09-14 | 辽宁科大中驰镁建材科技有限公司 | Boric sludge magnesium oxychloride marine ecological fish reef and preparation method thereof |
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