CN106630720A - Nano modified composite powder for ocean-engineering concrete structure - Google Patents
Nano modified composite powder for ocean-engineering concrete structure Download PDFInfo
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- CN106630720A CN106630720A CN201611118241.1A CN201611118241A CN106630720A CN 106630720 A CN106630720 A CN 106630720A CN 201611118241 A CN201611118241 A CN 201611118241A CN 106630720 A CN106630720 A CN 106630720A
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- 239000004567 concrete Substances 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 239000000843 powder Substances 0.000 title claims abstract description 25
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 33
- 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
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- 238000012986 modification Methods 0.000 claims description 39
- 230000004048 modification Effects 0.000 claims description 39
- 239000008187 granular material Substances 0.000 claims description 37
- 239000002956 ash Substances 0.000 claims description 17
- 239000004568 cement Substances 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000010881 fly ash Substances 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical group [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- 235000010755 mineral Nutrition 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 5
- 235000010216 calcium carbonate Nutrition 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract 1
- 230000036571 hydration Effects 0.000 abstract 1
- 238000006703 hydration reaction Methods 0.000 abstract 1
- 239000013081 microcrystal Substances 0.000 abstract 1
- 229910021487 silica fume Inorganic materials 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000003818 cinder Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 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
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 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
- 239000001569 carbon dioxide Substances 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
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000010348 incorporation Methods 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
- 239000002105 nanoparticle Substances 0.000 description 1
- 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 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
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005507 spraying 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical fields of ocean-engineering materials and engineering, and aims at providing nano modified composite powder for an ocean-engineering concrete structure. The composite powder is formed by mixing the following raw material components in parts by weight: 20 to 30 parts of pulverized fuel ash, 25 to 40 parts of blast-furnace slag powder, 10 to 20 parts of silica fume, 5 to 10 parts of nano CaCO3 and 0.8 to 1 part of nano dispersant. By using the nano modified composite powder, the limitation that a single mineral component influences concrete performance is effectively removed; a compound multifunctional component can be used for effectively optimizing the grain composition of the concrete structure; the purpose of greatly improving the durability of the concrete structure is achieved. According to the nano modified composite powder, the high activity and the microcrystal nucleus effect of nano grains are sufficiently exerted; the effects of improving the impermeability and the durability of the ocean-engineering concrete structure are far superior to those of an ordinary mineral admixture. By using the nano modified composite powder, the reasonable composition and the uniform mixing of the high-activity grains are promoted; the optimization of formula design is achieved; a product has the properties of excellent corrosion resistance, shrinkage reduction, low hydration heat, shrinkage compensation and the like.
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 technology
With numerous large ocean works such as the high speed development of China's marine economy, sea port dock, bridge spanning the sea, seabed tunnel
Journey starts to invest to build in a large number, and ocean engineering construction scale has reached unprecedented degree, and construction material especially concrete in ocean
Vital effect is played in engineering construction.But due to the particularity in ocean bad border, serious is caused to xoncrete structure
Corrode and execution：On the one hand, due to there are a large amount of Cl in seawater-、SO4 2-、Mg2+Deng erosion carbon dioxide and microorganism,
Concrete is asked to possess excellent decay resistance；On the other hand, the effect such as impact, abrasion, tired and cavitation erosion of wave can be to mixed
Xtah Crude Clay structure causes a certain degree of destruction.Therefore, the concrete under marine environment is not required nothing more than with sufficient intensity, should also be had
There is the mechanical property such as good shock resistance, antifatigue, wear-resistant.
It is to improve one of maritime concrete corrosion resistance important to arrange to prepare high performance concrete using mineral admixture
Apply, but after traditional mineral admixture is added, although also can preferably improve xoncrete structure packing, but while be likely to lead
Causing the basicity of armored concrete reduces, and the stability for causing concrete reinforcement surface passivated membrane declines, when chlorion oozes from outside
When entering the rebar surface to concrete, the corrosion of reinforcing bar is faster caused on the contrary, be extremely difficult to the design requirement of current 100 years.
The content of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art, develops a kind of nano modification and is combined
Superfine powder, improves offshore engineering structure concrete durability.
To solve technical problem, the solution of the present invention is：
A kind of nano modification composite granule for ocean engineering concrete structure is provided, is by following originals of parts by weight
Material component is mixed：20～30 parts of flyash, 25～40 parts of ground granulated blast furnace slag, 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 perform standard, specific surface area be 400～
600m2/kg。
In the present invention, the ground granulated blast furnace slag is S95 levels, meets GB/T18046-2008 and performs standard, and specific surface area is
400～600m2/kg。
In the present invention, the silicon ash meets GB/T27690-2011 and performs 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 perform standard, grain
Footpath is 15～40nm.
In the present invention, the nano-dispersing agent is SP-1800 polyesters hyper-dispersants, and its active ingredient is cetyl three
Methyl bromide ammonium.
Invention further provides the preparation method of the nano modification composite granule, comprises the steps：
(1) by dry Nano-meter CaCO33Mix according to described part by weight with nano-dispersing agent, stir at 110 DEG C of constant temperature
30min is mixed, modified Nano-meter CaCO3 is obtained3；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed by described part by weight, in Vertical Mill equipment after addition grinding aid
Middle pre-grinding；Then 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 is obtained
Nano modification composite granule.
Present invention also offers the using method of the nano modification composite granule, is with the nano modification composite granule
The cement of equivalent is substituted for concrete preparation；Specifically include following step：
(1) add cement and gather materials in mixing plant, wherein the weight gathered materials is based on ratio requirement prepared by concrete
Calculate, the weight of cement is calculated by the 75% of required dry cement total amount；
(2) weigh nano modification composite granule and add mixing plant, the weight of nano modification composite granule is mixed by preparing
15% calculating of dry cement total amount needed for solidifying soil；
(3) by nano modification composite granule and cement, after gathering materials and stirring, the ratio requirement prepared by concrete is added
Water；Continue to stir, until be well mixed, it is standby.
Inventive principle is described：
The present invention from multi-angles such as the design of multicomponent mixture formula, process optimization, application technologies, by modified Nano
CaCO3Effectively it is combined with the conventional mineral admixture Jing special processes such as flyash, slag, silicon ash, level is carried out to each component with excellent
Change control, give full play to the superposition between each component function and synergy, improve structural strength and anti-permeability performance, substantially improve sea
Foreign engineering structure durability.
By Nano-meter CaCO33In conventional mineral admixture connected applications to concrete, Nano-meter CaCO3 can be given full play to3Fill out
Effect is filled, reduces porosity, increase xoncrete structure packing, while highly active Nano-meter CaCO33With 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 gels, is formed with Nano-meter CaCO33Particle is the 3 D stereo network structure of nucleus, improves concrete
Sub- microstructure, improve concrete structure durability.
Compared with prior art, the invention has the beneficial effects as follows：
1st, the present invention effectively solves the limitation that single mineral constituent affects on concrete performance, by flyash, surpasses
The multifunctional components such as mineral fine, silicon ash combine, and reach component function superposition and synergy, and composite multifunction component can be effective
Optimised coagulation soil structure grain composition, reaches the purpose for greatly improving concrete structure durability.
2nd, the present invention introduces modified Nano CaCO in mineral constituent system3Particle, using Nano-meter CaCO33Concrete is tied
While structure carries out grain composition optimization, the high activity and prestige nucleus effect of nano particle is given full play to, to ocean engineering coagulation
The impervious raising effect with durability of soil structure will be far superior to common mineral admixture.
3rd, super finely ground slag powder process for activating of the present invention exploitation with pre-grinding, mix grinding, spraying charging as characteristic, promotes height
Active particle rational gradation composition, uniform mixing, reach the optimization of formula design, product possess it is excellent it is anti-corrosion, reduce, low aquation
The characteristic such as heat and compensation contraction.
Description of the drawings
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
Below example can make the technical staff of this professional skill field more fully understand the present invention, but not appointing
Where formula limits the present invention.
The heretofore described nano modification composite granule for ocean engineering concrete structure, by under parts by weight
State raw material components 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 performs standard, specific surface
Product is 400～600m2/kg.Ground granulated blast furnace slag is S95 levels, meets GB/T18046-2008 and performs standard, and specific surface area is 400
～600m2/kg.Silicon ash meets GB/T27690-2011 and performs standard, and specific surface area is 15～30m2/g.Nano-meter CaCO33For chain lock
Shape Nano-meter CaCO33, meeting GB/T19590-2011 and perform standard, particle diameter is 15～40nm.The nano-dispersing agent is SP-1800
Polyesters hyper-dispersant, its active ingredient be cetyl trimethylammonium bromide, commercially available acquisition.
The preparation method of nano modification composite granule, comprises the steps：
(1) by dry Nano-meter CaCO33Mix according to described part by weight with nano-dispersing agent, stir at 110 DEG C of constant temperature
30min is mixed, modified Nano-meter CaCO3 is obtained3；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed by described part by weight, in Vertical Mill equipment after addition grinding aid
Middle pre-grinding；Then 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 is obtained
Nano modification composite granule.
The using method of nano modification composite granule, is that the cement for substituting equivalent with the nano modification composite granule is used for
It is prepared by concrete；Specifically include following step：
(1) add cement and gather materials in mixing plant, wherein the weight gathered materials is based on ratio requirement prepared by concrete
Calculate, the weight of cement is calculated by the 75% of required dry cement total amount；
(2) weigh nano modification composite granule and add mixing plant, the weight of nano modification composite granule is mixed by preparing
15% calculating of dry cement total amount needed for solidifying soil；
(3) by nano modification composite granule and cement, after gathering materials and stirring, the ratio requirement prepared by concrete is added
Water；Continue to stir, until be well mixed, it is standby.
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.
Operate by preceding method, realize the preparation and the use in Concrete is prepared of nano modification composite granule.
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.
Operate by preceding method, realize the preparation and the use in Concrete is prepared of nano modification composite granule.
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.
Operate by preceding method, realize the preparation and the use in Concrete is prepared of nano modification composite granule.
Embodiment 4
The nano modification composite granule prepared with embodiment 1-3 is used to prepare concrete, and water ash is set during being somebody's turn to do
Than for 0.33, sand coarse aggregate ratio 0.43, high-efficiency water-reducing agent of poly-carboxylic acid volume 0.4%.By the concreting being well mixed shaping, after form removal
Maintenance, obtains high-durability ocean engineering concrete.
Embodiment 5
The nano modification composite granule prepared with embodiment 1-3 is used to prepare concrete, and water ash is set during being somebody's turn to do
Than for 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 contrasted with the normal concrete for not mixing nano modification composite granule, enter on Zhoushan Zhai Ruoshan islands
Row real Gaussian fields are tested, and test maritime concrete mechanical property after certain age and endurance quality (is mainly oozed with resisting chloride ion penetration
Permeability is characterized), 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 finds, under the conditions of strength grade, age identical of being on active service, mixing can be effective after nano modification composite superfine powder
Improve concrete crushing strength and substantially reduce concrete charge pass, improve resistance of chloride ion penetration, concrete durability is significantly
Strengthen.
Based on foregoing description, the actual range of the present invention not only includes the disclosed embodiments, is additionally included in claim
All equivalents of the present invention are practiced or carried out under book.
Claims (8)
1. a kind of nano modification composite granule for ocean engineering concrete structure, it is characterised in that be by parts by weight
Following raw material components are mixed：20～30 parts of flyash, 25～40 parts of ground granulated blast furnace slag, 10～20 parts of silicon ash；Nano-meter CaCO33
5～10 parts, 0.8～1 part of nano-dispersing agent.
2. composite granule according to claim 1, it is characterised in that the flyash is II grade of ash, meets GB/T1596-
2005 perform standard, and specific surface area is 400～600m2/kg。
3. composite granule according to claim 1, it is characterised in that the ground granulated blast furnace slag is S95 levels, meets GB/
T18046-2008 performs standard, and specific surface area is 400～600m2/kg。
4. composite granule according to claim 1, it is characterised in that the silicon ash meets GB/T27690-2011 and performs mark
Standard, specific surface area is 15～30m2/g。
5. composite granule according to claim 1, it is characterised in that the Nano-meter CaCO33For chain lock shape Nano-meter CaCO33, symbol
Close GB/T19590-2011 and perform standard, particle diameter is 15～40nm.
6. composite granule according to claim 1, it is characterised in that the nano-dispersing agent is that SP-1800 polyesters surpass
Dispersant, its active ingredient is cetyl trimethylammonium bromide.
7. the preparation method of nano modification composite granule described in claim 1, it is characterised in that comprise the steps：
(1) by dry Nano-meter CaCO33Mix according to described part by weight with nano-dispersing agent, stir at 110 DEG C of constant temperature
30min, is obtained modified Nano-meter CaCO33；
(2) flyash, ground granulated blast furnace slag and silicon ash are weighed by described part by weight, it is pre- in Vertical Mill equipment after addition grinding aid
Mill；Then 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 nanometer
Modified composite powder body.
8. the using method of nano modification composite granule described in claim 1, it is characterised in that be compound with the nano modification
Powder substitutes the cement of equivalent for concrete preparation；Specifically include following step：
(1) add cement and gather materials in mixing plant, wherein the weight gathered materials is calculated by ratio requirement prepared by concrete, water
The weight of mud is calculated by the 75% of required dry cement total amount；
(2) weigh nano modification composite granule and add mixing plant, the weight of nano modification composite granule is by preparing concrete
15% calculating of required dry cement total amount；
(3) by nano modification composite granule and cement, after gathering materials and stirring, the ratio requirement prepared by concrete adds water；
Continue to stir, until be well mixed, it is standby.
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| CN201611118241.1A CN106630720B (en) | 2016-12-07 | 2016-12-07 | A kind of nano modification composite granule for ocean engineering concrete structure |
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| CN201611118241.1A CN106630720B (en) | 2016-12-07 | 2016-12-07 | A kind of nano modification composite granule for ocean engineering concrete structure |
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| CN106630720B CN106630720B (en) | 2019-03-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108546009A (en) * | 2018-04-27 | 2018-09-18 | 湖北工业大学 | Mix multiple dimensioned grain size CaCO3High performance concrete pulpous state 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN108546009A (en) * | 2018-04-27 | 2018-09-18 | 湖北工业大学 | Mix multiple dimensioned grain size CaCO3High performance concrete pulpous state admixture |
| 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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| CN106630720B (en) | 2019-03-01 |
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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 |