CN106630720B - A kind of nano modification composite granule for ocean engineering concrete structure - Google Patents
A kind of nano modification composite granule for ocean engineering concrete structure Download PDFInfo
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- CN106630720B CN106630720B CN201611118241.1A CN201611118241A CN106630720B CN 106630720 B CN106630720 B CN 106630720B CN 201611118241 A CN201611118241 A CN 201611118241A CN 106630720 B CN106630720 B CN 106630720B
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- 239000004567 concrete Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 238000012986 modification Methods 0.000 title claims abstract description 36
- 230000004048 modification Effects 0.000 title claims abstract description 36
- 239000008187 granular material Substances 0.000 title claims abstract description 31
- 239000002956 ash Substances 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 16
- 239000011707 mineral Substances 0.000 claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 33
- 238000000227 grinding Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- HJCCZIABCSDUPE-UHFFFAOYSA-N methyl 2-[4-[[4-methyl-6-(1-methylbenzimidazol-2-yl)-2-propylbenzimidazol-1-yl]methyl]phenyl]benzoate Chemical compound CCCC1=NC2=C(C)C=C(C=3N(C4=CC=CC=C4N=3)C)C=C2N1CC(C=C1)=CC=C1C1=CC=CC=C1C(=O)OC HJCCZIABCSDUPE-UHFFFAOYSA-N 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 3
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 238000000889 atomisation Methods 0.000 claims 1
- 230000031709 bromination Effects 0.000 claims 1
- 238000005893 bromination reaction Methods 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 5
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- 239000002994 raw material Substances 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 4
- 230000015271 coagulation Effects 0.000 abstract description 3
- 238000005345 coagulation Methods 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000002105 nanoparticle Substances 0.000 abstract description 2
- 230000036571 hydration Effects 0.000 abstract 1
- 238000006703 hydration reaction Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 12
- 235000010755 mineral Nutrition 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 4
- 235000010216 calcium carbonate Nutrition 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 239000003818 cinder Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000537371 Fraxinus caroliniana Species 0.000 description 2
- 235000010891 Ptelea trifoliata Nutrition 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- HRHBQGBPZWNGHV-UHFFFAOYSA-N azane;bromomethane Chemical compound N.BrC HRHBQGBPZWNGHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery 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
- 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
-
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The present invention relates to ocean engineering material and field of engineering technology, it is desirable to provide a kind of nano modification composite granule for ocean engineering concrete structure.The composite granule is mixed by the following raw material components of parts by weight: 20~30 parts of flyash, 25~40 parts of ground granulated blast furnace slag, 10~20 parts of silicon ash；5~10 parts of nm level CaCO_3,0.8~1 part of nano-dispersing agent.The limitation that the single mineral constituent of effective solution of the present invention influences concrete performance, composite multifunction component can effective optimised coagulation soil structure grain composition, achieve the purpose that greatly improve concrete structure durability.The present invention gives full play to the high activity and prestige nucleus effect of nano particle, to be far superior to common mineral admixture to the improvement effect of ocean engineering concrete structure impermeability and durability.The present invention promotes high-activity particle rational gradation composition, uniformly mixing, reaches the optimization of formula design, and product has excellent anti-corrosion, decrement, low hydration heat and compensation and the characteristics such as shrinks.
Description
Technical field
The present invention relates to ocean engineering material and field of engineering technology, and in particular to one kind is exclusively used in prevention of marine concrete structures
Nano modification composite superfine powder and preparation method thereof.
Background technique
With the high speed development of China's marine economy, numerous large ocean works such as sea port dock, bridge spanning the sea, seabed tunnel
Journey starts largely to invest to build, and ocean engineering construction scale has reached unprecedented degree, and construction material especially concrete is in ocean
Vital effect is played in engineering construction.But due to the particularity in ocean bad border, concrete structure is caused serious
Erosion and execution: on the one hand, since there are a large amount of Cl in seawater-、SO4 2-、Mg2+Equal erosion carbon dioxides and microorganism,
Concrete is asked to have excellent corrosion resistance；On the other hand, the effects of impact, abrasion of wave, fatigue and cavitation erosion, can be to mixed
Xtah Crude Clay structure causes a degree of destruction.Therefore, the concrete under marine environment not only requires sufficient intensity, should also have
There are the mechanical properties such as good shock resistance, antifatigue, wear-resistant.
Preparing high performance concrete using mineral admixture is to improve one of maritime concrete corrosion resistance important to arrange
It applies, after traditional mineral admixture is added, although also can preferably improve concrete structure compactness, but may also lead simultaneously
Causing the basicity of armored concrete reduces, and the stability of concrete reinforcement surface passivated membrane is caused to decline, when chloride ion is seeped from outside
When entering to the rebar surface of concrete, faster causes the corrosion of reinforcing bar instead, be extremely difficult to current 100 years design requirements.
Summary of the invention
The technical problem to be solved by the present invention is to overcome deficiency in the prior art, it is compound to develop a kind of nano modification
Superfine powder improves offshore engineering structure concrete durability.
In order to solve the technical problem, solution of the invention is:
A kind of nano modification composite granule for ocean engineering concrete structure is provided, is following originals by parts by weight
Material component mixes: 20~30 parts of flyash, 25~40 parts of ground granulated blast furnace slag, and 10~20 parts of silicon ash；Nano-meter CaCO335~10
Part, 0.8~1 part of nano-dispersing agent.
In the present invention, the flyash be II grade of ash, meet GB/T1596-2005 execute standard, specific surface area be 400~
600m2/kg。
In the present invention, the ground granulated blast furnace slag is S95 grades, meets GB/T18046-2008 and executes standard, specific surface area is
400~600m2/kg。
In the present invention, the silicon ash meets GB/T27690-2011 and executes standard, and specific surface area is 15~30m2/g。
In the present invention, the Nano-meter CaCO33For chain lock shape Nano-meter CaCO33, meet GB/T19590-2011 and execute standard, grain
Diameter is 15~40nm.
In the present invention, the nano-dispersing agent is SP-1800 polyesters hyper-dispersant, and effective component is cetyl three
Methyl bromide ammonium.
Invention further provides the preparation methods of the nano modification composite granule, include the following steps:
(1) by dry Nano-meter CaCO33It mixes with nano-dispersing agent according to the weight ratio, is stirred at 110 DEG C of constant temperature
30min is mixed, modified Nano-meter CaCO3 is made3；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed by the weight ratio, add after grinding aid in Vertical Mill equipment
Middle pre-grinding；Then it is added in ball-grinding machine with being atomized feed way, mix grinding obtains complex mineral superfine powder；
(3) by complex mineral superfine powder and modified Nano-meter CaCO33Continuous Roller press is sent into after mixing, grinding obtains
Nano modification composite granule.
It is with the nano modification composite granule the present invention also provides the application method of the nano modification composite granule
The cement for substituting equivalent is prepared for concrete；Specifically include the following steps:
(1) cement is added and gathers materials into mixing plant, wherein the weight gathered materials is based on ratio requirement prepared by concrete
It calculates, the weight of cement is calculated by the 75% of required dry cement total amount；
(2) it weighs nano modification composite granule and mixing plant is added, the weight of nano modification composite granule is mixed by preparation
15% of dry cement total amount needed for solidifying soil calculates；
(3) by nano modification composite granule and cement, gather materials after mixing evenly, be added by the ratio requirement of concrete preparation
Water；Continue to stir, until be uniformly mixed, it is spare.
Inventive principle description:
The present invention is from multi-angles such as the design of multicomponent mixture formula, process optimization, application technologies, by modified Nano
CaCO3It is effectively compound through special process with the conventional minerals admixture such as flyash, slag, silicon ash, it is excellent that gradation is carried out to each component
Change control, give full play to the superposition between each component function and synergy, improves structural strength and anti-permeability performance, substantially improve sea
Foreign engineering structure durability.
By Nano-meter CaCO33With conventional mineral admixture connected applications into concrete, Nano-meter CaCO3 can be given full play to3Fill out
Effect is filled, porosity is reduced, increases concrete structure compactness, while the Nano-meter CaCO3 of high activity3With the C in concrete3A is anti-
Calcium aluminate of hydrated carbon should be generated, promotes hydrated cementitious to improve hardenite intensity.In addition, with Nano-meter CaCO33Particle is nucleus,
Particle surface forms C-S-H gel, is formed with Nano-meter CaCO33Particle is the 3 D stereo reticular structure of nucleus, improves concrete
Sub- microstructure, improve concrete structure durability.
Compared with prior art, the beneficial effects of the present invention are:
1, the limitation that the single mineral constituent of effective solution of the present invention influences concrete performance, by flyash, super
The multifunctional components such as mineral fine, silicon ash combine, and reach component function superposition and synergy, composite multifunction component can be effective
Optimised coagulation soil structure grain composition, achievees the purpose that greatly improve concrete structure durability.
2, the present invention introduces modified Nano CaCO in mineral constituent system3Particle utilizes Nano-meter CaCO33To concrete knot
While structure carries out grain composition optimization, the high activity and prestige nucleus effect of nano particle are given full play to, to ocean engineering coagulation
Soil structure impermeability and the improvement effect of durability will be far superior to common mineral admixture.
3, present invention exploitation is the super finely ground slag powder process for activating of characteristic with pre-grinding, mix grinding, spraying charging, promotes height
Active particle rational gradation composition, uniformly mixing, reach the optimization of formula design, and product has excellent anti-corrosion, decrement, low aquation
The characteristics such as heat and compensation contraction.
Detailed description of the invention
Fig. 1 is the Technology Roadmap of nano modification composite superfine powder；
Fig. 2 is nano modification composite superfine powder production technology figure.
Specific embodiment
Embodiment below can make the technical staff of this professional skill field more fully understand the present invention, but not to appoint
Where formula limitation is of the invention.
The heretofore described nano modification composite granule for ocean engineering concrete structure, is by under parts by weight
Raw material components are stated to mix: 20~30 parts of flyash, 25~40 parts of ground granulated blast furnace slag, 10~20 parts of silicon ash；Nano-meter CaCO335
~10 parts, 0.8~1 part of nano-dispersing agent.The flyash is II grade of ash, meets GB/T1596-2005 and executes standard, specific surface
Product is 400~600m2/kg.Ground granulated blast furnace slag is S95 grades, meets GB/T18046-2008 and executes standard, specific surface area 400
~600m2/kg.Silicon ash meets GB/T27690-2011 and executes standard, and specific surface area is 15~30m2/g.Nano-meter CaCO33For chain lock
Shape Nano-meter CaCO33, meet GB/T19590-2011 and execute standard, partial size is 15~40nm.The nano-dispersing agent is SP-1800
Polyesters hyper-dispersant, effective component are cetyl trimethylammonium bromide, commercially available acquisition.
The preparation method of nano modification composite granule, includes the following steps:
(1) by dry Nano-meter CaCO33It mixes with nano-dispersing agent according to the weight ratio, is stirred at 110 DEG C of constant temperature
30min is mixed, modified Nano-meter CaCO3 is made3；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed by the weight ratio, add after grinding aid in Vertical Mill equipment
Middle pre-grinding；Then it is added in ball-grinding machine with being atomized feed way, mix grinding obtains complex mineral superfine powder；
(3) by complex mineral superfine powder and modified Nano-meter CaCO33Continuous Roller press is sent into after mixing, grinding obtains
Nano modification composite granule.
The application method of nano modification composite granule is used for the cement of nano modification composite granule substitution equivalent
Concrete preparation；Specifically include the following steps:
(1) cement is added and gathers materials into mixing plant, wherein the weight gathered materials is based on ratio requirement prepared by concrete
It calculates, the weight of cement is calculated by the 75% of required dry cement total amount；
(2) it weighs nano modification composite granule and mixing plant is added, the weight of nano modification composite granule is mixed by preparation
15% of dry cement total amount needed for solidifying soil calculates；
(3) by nano modification composite granule and cement, gather materials after mixing evenly, be added by the ratio requirement of concrete preparation
Water；Continue to stir, until be uniformly mixed, it is spare.
Embodiment 1
Nano modification composite granule is mixed by the following raw material components of parts by weight: 20 parts of flyash, blast-furnace cinder
40 parts of powder, 15 parts of silicon ash；Nano-meter CaCO337 parts, 1 part of nano-dispersing agent.
It is operated by preceding method, realize the preparation of nano modification composite granule and is preparing the use in Concrete.
Embodiment 2
Nano modification composite granule is mixed by the following raw material components of parts by weight: 30 parts of flyash, blast-furnace cinder
25 parts of powder, 20 parts of silicon ash；Nano-meter CaCO335 parts, 0.8 part of nano-dispersing agent.
It is operated by preceding method, realize the preparation of nano modification composite granule and is preparing the use in Concrete.
Embodiment 3
Nano modification composite granule is mixed by the following raw material components of parts by weight: 25 parts of flyash, blast-furnace cinder
30 parts of powder, 10 parts of silicon ash；Nano-meter CaCO3310 parts, 0.9 part of nano-dispersing agent.
It is operated by preceding method, realize the preparation of nano modification composite granule and is preparing the use in Concrete.
Embodiment 4
The nano modification composite granule prepared with embodiment 1-3 is used to prepare concrete, should set water ash in the process
Than being 0.33, sand coarse aggregate ratio 0.43, high-efficiency water-reducing agent of poly-carboxylic acid volume 0.4%.Uniformly mixed concreting is formed, after demoulding
Maintenance, obtains high-durability ocean engineering concrete.
Embodiment 5
The nano modification composite granule prepared with embodiment 1-3 is used to prepare concrete, should set water ash in the process
Than being 0.33, sand coarse aggregate ratio 0.43, high-efficiency water-reducing agent of poly-carboxylic acid volume 0.4%.The different intensity grades such as C30, C40, C50 are prepared respectively
High durability concrete, and compared with not mixing the normal concrete of nano modification composite granule, the Zhoushan island Zhai Ruoshan into
The test of row real Gaussian fields, tests maritime concrete mechanical property after certain age and endurance quality (is mainly seeped with resisting chloride ion penetration
Permeability characterization), each age concrete durability is much better than normal concrete.
Concrete test data are as follows:
Mechanical performance of concrete
Ion penetration resistance of concrete
By benchmark group J-C30, J-C40, J-C50 and incorporation nano modification composite superfine powder G-C30, G-C40, G-C50
Data comparison discovery in strength grade, is on active service age under the same conditions, can be effective after incorporation nano modification composite superfine powder
It improves concrete crushing strength and substantially reduces concrete charge pass, improve resistance of chloride ion penetration, concrete durability is substantially
Enhancing.
Based on foregoing description, the actual scope of the present invention not only includes the disclosed embodiments, further includes in claim
All equivalent schemes of the invention are practiced or carried out under book.
Claims (5)
1. a kind of method for preparing the nano modification composite granule for ocean engineering concrete structure, which is characterized in that including
Following step:
(1) by dry Nano-meter CaCO33After mixing with nano-dispersing agent, 30min is stirred at 110 DEG C of constant temperature, is made modified and receives
Rice CaCO3 ；The nano-dispersing agent is SP-1800 polyesters hyper-dispersant, and effective component is cetyl trimethyl bromination
Ammonium；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed, the pre-grinding in Vertical Mill equipment after grinding aid is added；Then added with atomization
Material mode is added in ball-grinding machine, and mix grinding obtains complex mineral superfine powder；
(3) by complex mineral superfine powder and modified Nano-meter CaCO33Continuous Roller press is sent into after mixing, grinding obtains nanometer
Modified composite powder body；It include the component of following portions by weight: 20 ~ 30 parts of flyash, Blast Furnace Ore in the nano modification composite granule
25 ~ 40 parts of ground-slag, 10 ~ 20 parts of silicon ash；Nano-meter CaCO335 ~ 10 parts, 0.8 ~ 1 part of nano-dispersing agent.
2. meeting GB/T1596-2005 the method according to claim 1, wherein the flyash is II grade of ash
Execution standard, specific surface area are 400~600 m2/kg。
3. meeting GB/T18046- the method according to claim 1, wherein the ground granulated blast furnace slag is S95 grades
2008 execute standard, and specific surface area is 400~600 m2/kg。
4. the method according to claim 1, wherein the silicon ash meet GB/T27690-2011 execute standard,
Specific surface area is 15~30 m2/g。
5. the method according to claim 1, wherein the Nano-meter CaCO33For chain lock shape Nano-meter CaCO33, meet
GB/T19590-2011 executes standard, and partial size is 15 ~ 40nm.
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| CN108546009B (en) * | 2018-04-27 | 2021-01-08 | 湖北工业大学 | CaCO doped with multi-scale particle size3High performance concrete slurry admixture |
| CN115057642A (en) * | 2022-07-07 | 2022-09-16 | 山东顺科建材科技有限公司 | High-performance composite powder applied to cement and concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101234861A (en) * | 2008-01-31 | 2008-08-06 | 浙江大学 | Method for preparing nano modified concrete complex mineral blending material |
| CN103224374A (en) * | 2013-04-24 | 2013-07-31 | 东南大学 | Ecological type nanometer super high performance cement based composite material and preparation method thereof |
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| KR20150142769A (en) * | 2014-06-11 | 2015-12-23 | 한미이엔씨 주식회사 | The Magnesia Cemnent Composte Containing Modified Sulfur And The Method For Preparing Thereof, Lightweight Panel Comprising The Magnesia Cement Composite and Method for preparing the Same |
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Effective date of registration: 20231128 Address after: 618, West Shifu Avenue, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: RESEARCH INSTITUTE OF ZHEJIANG University TAIZHOU Address before: 618, West Shifu Avenue, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: TAIZHOU BRANCH, ZHEJIANG CALIFORNIA INTERNATIONAL NANOSYSTEMS INSTITUTE |