CN110255996A - A kind of fine coal lacquer putty polymers concrete and preparation method thereof - Google Patents
A kind of fine coal lacquer putty polymers concrete and preparation method thereof Download PDFInfo
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- CN110255996A CN110255996A CN201910659478.8A CN201910659478A CN110255996A CN 110255996 A CN110255996 A CN 110255996A CN 201910659478 A CN201910659478 A CN 201910659478A CN 110255996 A CN110255996 A CN 110255996A
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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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
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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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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
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Abstract
The present invention discloses a kind of fine coal lacquer putty polymers concrete, the concrete is using flyash and metakaolin as substrate, the combination of one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, potassium silicate and waterglass are alkali-activator, and addition modified ceramic microsphere particle, polymer fiber, coarse aggregate, fine aggregate, He Shui are prepared.The fine coal lacquer putty polymers concrete has good mechanical property, durability and corrosion resistance.
Description
Technical field
The invention belongs to concrete material technical fields, and in particular to a kind of fine coal lacquer putty polymers concrete and its preparation side
Method.
Background technique
Ancient times concrete, mortar building, such as Pyramids, the big arena in Rome, all with very excellent resistance to
Long performance, they can keep thousands of years, year even up to ten thousand without being destroyed in than relatively rugged environment.In comparison, exist
Under identical external condition, the modern concrete prepared with portland cement averagely only has the service life of 40-50, and longest is also no more than
100 years, short only several years with regard to subject to severe risks of damage.To find out its cause, since there are a kind of silicic acid in the durability concrete
Unexistent amorphous substance in salt cement, the structure of the substance and the three-dimensional rack-like structure of organic high molecular polymer are similar,
But its main body is inorganic SiO4And AlO4Tetrahedron, French material scholar J.Davidovits are referred to as geopolymer
(geopolymer)。
Geopolymer is by appropriate metakaolin and a small amount of alkaline excitation agent solution and a large amount of natural or artificial sial materials
Material mixes, and being gelled without clinker for obtained different intensity grades is conserved at lower than 150 DEG C or even under normal temperature condition
Material.Compared with previous inorganic Si-Al matter cementitious material, geopolymer has the characteristics that following: 1, excellent durability
Energy；2, without using " the two mills one are burnt " calcining for largely consuming resource and the energy as production portland cement in preparation process
Technique does not discharge CO substantially2, and the raw material used is resourceful, cheap natural or artificial low calcium Si-Al
Material；3, it is fast hard, early strong, and later strength is high, is achieved within geopolymer general 1 day the 70% of final strength, the later period is anti-
Compressive Strength can reach 20-100MPa；4, lower shrinkage, 7 days of geopolymer, 28 days shrinking percentages were only respectively 0.02% He
0.05%, and portland cement hardened paste 7 days, 28 days shrinking percentages are but up to 0.10%, 0.33%；5, low-permeability, if
The impermeability of concrete is characterized with chloride diffusion coefficient, then its chloride diffusion coefficient is close with granite, impervious good；
6, high temperature resistant, good heat-insulation effect can resist the vehement roasting without damaging of 1000-1200 DEG C of high temperature, and thermal coefficient can be with light-weight refractory
Clay brick compares favourably.These characteristics make geopolymer and its concrete municipal administration, bridge, road, water conservancy, underground, ocean with
And the fields such as military affairs have boundless application prospect, are expected to the substitute products as portland cement.
Flyash is the byproduct of steam power plant's production, and China's flyash annual emissions have been approached 300,000,000 tons at present, but only not
The flyash of sufficient half is utilized, and a large amount of flyash stacks not only land occupation, but also also causes the serious pollution of environment, is made
At the huge waste of the energy and resource.And so far, China is less than 30% to the utilization rate of flyash, it is contemplated that flyash
It is the Si-Al material of low calcium, there is potential activity, therefore, replaces part metakaolin to prepare to polymerize using flyash
Object can significantly improve the utilization rate of flyash, reduce environmental pollution, have important society, economy and technical benefits.
Fine coal lacquer putty polymers concrete (Fly Ash Geopolymer, FAG) is referred to as " green " material, there is research table
Bright, CO2 emissions reduce about 80% than ordinary portland cement in production process.Fine coal lacquer putty polymers concrete
It is polluted not only for environment smaller, and also has apparent advantage compared with ordinary fly ash concrete.In non-patent
In document " influence of the curing condition to fine coal lacquer putty polymers concrete early-age shrinkage performance ", researcher has found fine coal lacquer putty polymers
Early age compression strength is lower under concrete package curing condition, and gain in strength is very fast in 7-28 days, and intensity is greater than powder after 28 days
Coal ash concrete；Fine coal lacquer putty polymers concrete contraction percentage is smaller compared with flyash concrete.
Patent document CN201410856420.X is using alkali-activated carbonatite fly ash-based geopolymer as major gelled material, preparation one
Kind fly ash-based geopolymer concrete material, the component and mass percent of the fly ash-based geopolymer concrete material
Are as follows: flyash 25-45%, metakaolin 0-15%, cement 10-15%, gangue and slag 0-5%, alkali-activator 25-
35%, retarder 0.5-1%, deionized water 1-5%, the fly ash-based geopolymer concrete material are that common composition is matched
Side, has no other performance advantages outstanding.
In the prior art, someone realizes it by improving on the basis of fine coal lacquer putty polymers concrete common composition
His more novel feature.As patent document CN201611127977.5 discloses a kind of chitin modified geopolymer gelling material
Material.It adds chitosan into alkali-activator and dissolution is sufficiently stirred obtains mixed solution；Mixed solution is added step-wise to again
It is stirred and evenly mixed in sa solid material；It is reacted in injection mold, is conserved after demoulding, obtain gathering chitin modifiedly
Close object cementitious material.The backfin that the addition of chitosan can significantly reduce material when improves material bending toughness, but chitosan is finished
Unexpectedly it is a kind of biomaterial, will lead to cost for concrete preparation and increase.
Patent document CN201410601488.3 discloses a kind of fly ash-based geopolymer foam concrete composition, institute
It states composition and contains flyash, foaming agent, waterglass, aluminium powder and water.The foam concrete of preparation have light, heat-insulation and heat-preservation,
Many advantages, such as sound-proof refractory, anti-seismic performance are good.
Patent document CN201510974523.0 discloses a kind of fly ash-based geopolymer agglutination material and celluar concrete
Material, fly ash-based geopolymer agglutination material is by flyash, granulated blast-furnace slag, nano zeolite powder, land plaster and by potassium sodium
Compound alkali-activator composition prepared by waterglass, caustic alkali prepares the particular stages such as itself and basalt or granite with coarse aggregate
Celluar concrete, and it is applied to making highway surface layer, have porosity big, seepage of water, skid resistance and sqouynd absorption lowering noise are good, intensity
Height, volume stability, the features such as durability is excellent.
Under normal conditions, in the prior art researcher for ground polymers concrete modification focus mostly in the anti-receipts of resistance to compression
In contracting performance, and its corrosion resistance is paid close attention to less.Retrieval discovery, patent document CN201810595723.9 disclose one
The corrosion-resistant geopolymer filling concrete pile material of kind, including 100 parts of metakaolin, 10-40 parts of flyash, modulus 1.2-
1.8 150-250 parts of modified water glass, 400-600 parts of fine sand, 800-1500 parts of stone, 5-20 parts of vinal, boric acid
5-10 parts.
In order to make up the defect of the prior art, the present invention provides a kind of fine coal lacquer putty polymers concrete, the concrete tool
There is preferable corrosion resistance, suitable for the construction of salt-soda soil engineering, ocean engineering, aggressive product factory, such as chemical industry
Production workshop, drug or chemical fertilizer production workshop etc..
Summary of the invention
The object of the present invention is to provide a kind of fine coal lacquer putty polymers concrete and its preparation method and application.
In a first aspect, the present invention provides a kind of fine coal lacquer putty polymers concrete, the concrete is with flyash and higher ridge
Soil is substrate, and the combination of one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, potassium silicate and waterglass are alkali
Property exciting agent, addition modified ceramic microsphere particle, polymer fiber, coarse aggregate, fine aggregate, He Shui be prepared, the modification
Ceramic microsphere particle preparation raw material includes: ceramic microsphere, silica solution, anti-corrosive rust inhibitor and acrylic acid ester emulsion and/or phenylpropyl alcohol
Lotion.
Preferably, the fine coal lacquer putty polymers concrete includes that following mass fraction prepares material: flyash 1-400
Part, 1-400 parts of metakaolin, the group of one or more of sodium hydroxide, potassium hydroxide, sodium metasilicate, potassium silicate amounts to
Count 20-30 parts, 150-200 parts of waterglass, 40-100 parts of modified ceramic microsphere particle, 10-50 parts of polymer fiber, coarse aggregate
800-1500 parts, 400-500 parts of fine aggregate, 10-20 parts of water, wherein it includes: that ceramics are micro- that modified ceramic microsphere particle, which prepares raw material,
100-500 parts of ball, 20-60 parts of silica solution, 20-40 parts of anti-corrosive rust inhibitor and acrylic acid ester emulsion and/or styrene-acrylic emulsion are total
30-50 parts.
It is furthermore preferred that further including 5-15 parts of water-reducing agent in the fine coal lacquer putty polymers concrete, the water-reducing agent is selected from poly-
Carboxylic acid water reducing agent.
Preferably, polymer fiber of the present invention, it is fine selected from polypropylene fibre, polyacrylonitrile fibre, polyvinyl alcohol
The combination of one or more of dimension.In a preferred embodiment of the invention, the polymer fiber is selected from polypropylene
Nitrile fiber.
Preferably, the alkali-activator is selected from the potassium silicate solution that modulus is 2.5-3.0 and the water that modulus is 1.2-2.0
The combination of glass.
The coarse aggregate is selected from the lime stone rubble or stone of 5-15mm continuous grading；The fine aggregate is selected from fineness modulus
For the yellow ground of 1.2-1.5, cement content 0.7%, sieve takes 5mm particle below when use.
The metakaolin that the present invention uses is powder of the natural kaolin after 600-900 DEG C of calcining more than resulting 200 mesh
Body.
The flyash is the grey black powdered granule obtained after anthracite or bituminous coal burn in the boiler, and density exists
1900-2800kg/m3Between.Preferably, the flyash can be level-one or second class powered coal ash, chemical constituent silica and
Alumina content is greater than 70%.The flyash that the present invention uses is thermal power plant grade F class level-one flyash, particle size 1-
100 μm, main component includes silica, aluminium oxide, iron oxide, calcium oxide, titanium oxide, phosphorous oxide etc..Using F class flyash
Reason is that F class flyash is lower compared with other type fly ash calcium contents, belongs to Class F fly ash, and the content of calcium can make less
The enhancing of ground polymers concrete material sulfate-resistant corrosion ability, heat of hydration degree is low, and mechanical property and durability are more preferable.
The modified ceramic microsphere particle is to coat one layer of function containing anti-corrosive rust inhibitor in conventional ceramic microsphere surface
Energy coating in the three-dimensional rack-like structure that geopolymer is formed there is good filling to make since the partial size of ceramic microsphere is smaller
With keeping concrete structure closer, improve the mechanical property of concrete.Ceramic microsphere surface coats corrosion-prevention rust-resistance coating, makes to prevent
Rotten corrosion inhibitor is taken a walk more uniform stabilization with ceramic microsphere, and the work of acrylic acid ester emulsion and/or styrene-acrylic emulsion and silica solution
With being the contact force for increasing anti-corrosive rust inhibitor and ceramic microsphere surface, it is not easy to fall off in whipping process, and then concrete is resistance to
Long property and corrosion resistance increase.
Preferably, the ceramic microsphere particle can be selected from solid ceramic microballoon or hollow ceramic microspheres, it is furthermore preferred that institute
Stating ceramic microsphere is solid ceramic microballoon.Ceramic microsphere is a kind of high intensity, inertia, hard spherical super fine ceramic powders, this
In invention, ceramic microsphere partial size range is 10-30 μm.
In a preferred embodiment of the invention, the fine coal lacquer putty polymers concrete includes the preparation of following mass fraction
Material: 200-400 parts of flyash, 100-400 parts of metakaolin, 23-25 parts of potassium silicate, 180-200 parts of waterglass, polycarboxylic-acid
7-10 parts of water-reducing agent, 60-90 parts of modified ceramic microsphere particle, 20-30 parts of polymer fiber, 1000-1200 parts of coarse aggregate, thin bone
400-500 parts, 15-20 parts of water of material, wherein it includes: 300-500 parts of ceramic microsphere, third that modified ceramic microsphere particle, which prepares raw material,
Olefin(e) acid ester lotion and/or styrene-acrylic emulsion amount to 30-50 parts, 20-60 parts of silica solution, 20-40 parts of anti-corrosive rust inhibitor.
Second aspect, the present invention provide a kind of preparation method of fine coal lacquer putty polymers concrete, specifically comprise the following steps:
(1) prepared by modified ceramic microsphere particle: acrylic acid ester emulsion and/or styrene-acrylic emulsion being sufficiently stirred with silica solution mixed
It is even, anti-corrosive rust inhibitor is added, dispersion is stirred until homogeneous to obtain spray coating liquor, and it is micro- that spray coating liquor is uniformly sprayed on to ceramics using spray equipment
Ball surface, it is dry at a temperature of 60-90 DEG C, obtain modified ceramic microsphere particle；
(2) alkali-activator is prepared in advance: will be in water, waterglass, sodium hydroxide, potassium hydroxide, sodium metasilicate, potassium silicate
A combination of one or more is sufficiently mixed, and it is spare that stirring and dissolving is placed on room temperature；
(3) prepared by oligomer gel material: first mixing flyash with metakaolin, adds the alkalinity prepared in advance and swash
Agent is sent out, is sufficiently stirred, polymer fiber is added, is mixed；
(4) prepared by polymers concrete: coarse aggregate and fine aggregate being added in agitating device, ground oligomer gel material is added
Stirring, adds modified ceramic microsphere particle, is sufficiently stirred and fine coal lacquer putty polymers concrete is prepared.
Preferably, ceramic microsphere is reunited in spraying process in order to prevent in the step (1), accelerates microsphere surface spraying
Liquid is dry, and spraying process carries out at a temperature of 50-60 DEG C.
It is furthermore preferred that obtained modified ceramic microballoon is crossed into 300-400 mesh in the step (1), it will be without the group of being formed
Poly- ceramic microsphere filters out.
It preferably, further include that water-reducing agent is added after alkali-activator is added in the step (3).
The third aspect, the present invention provide a kind of fine coal lacquer putty polymers concrete in salt-soda soil engineering, ocean engineering, chemical plant
It is applied in room, drug or the construction of chemical fertilizer production workshop.
The beneficial effects of the present invention are using flyash and metakaolin as substrate, in preparation ground polymers concrete mistake
The ingredients such as ceramic microsphere, the polymer fiber of surface coating anti-corrosive rust inhibitor are added in journey, the mechanical performance of concrete of preparation is good,
Durability is good, and corrosion resistance is strong.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only section Example of the invention, rather than all.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
The preparation of 1 fine coal lacquer putty polymers concrete of embodiment
The metakaolin that the present invention uses is to calcine kaolin at 700 DEG C 12 hours to be made, the chemistry of metakaolin
Ingredient is as shown in the table:
1 metakaolin chemical component of table
| Ingredient | SiO2 | Al2O3 | Fe2O3 | CaO | TiO2 | MnO | K2O | P2O5 | SO3 | MgO |
| Content % | 64.9 | 26.6 | 3.7 | 0.9 | 1.8 | 0.1 | 0.8 | 0.9 | - | - |
The flyash that the present invention uses is that certain thermal power plant grade F class level-one does ash discharge, and the chemical composition of PCA is such as
Shown in following table:
2 chemical composition of PCA of table
| Ingredient | SiO2 | Al2O3 | Na2O | CaO | Fe2O3 | MgO | SO3 | K2O | TiO2 | P2O5 | Cl- | MnO |
| Content % | 39.4 | 32.7 | 7.9 | 6.0 | 3.9 | 2.3 | 2.1 | 2.0 | 0.6 | 0.8 | 0.5 | 0.1 |
Fine coal lacquer putty polymers concrete the preparation method is as follows:
S1: being sufficiently stirred mixing with 20 parts of silica solution for 20 parts of acrylic acid ester emulsion, 10 parts of styrene-acrylic emulsion, while stirring plus
Enter 30 parts of anti-corrosive rust inhibitor, in agitating solution without particulate matter until, obtain spray coating liquor；Spray coating liquor is fitted into spray equipment,
Spray coating liquor is uniformly sprayed on to ceramic microsphere surface in 50 DEG C of drying boxes, spraying, which finishes, increases temperature to 90 DEG C, keeps microballoon quick
It is dry, 400 meshes are crossed, modified ceramic microsphere particle is obtained；
S2: 23 parts of potassium silicate, 8 parts of water, 184 parts of waterglass that modulus is 1.2-2.0 are sufficiently mixed, after mixing evenly
To alkali-activator, it is spare to be placed in room temperature；
S3: it first is placed in stirrer for mixing with 200 parts of metakaolin by 200 parts of flyash, the alkali of step S2 preparation is added
Property exciting agent, be sufficiently stirred, be added 20 parts of polyacrylonitrile fibre, be mixed, obtain ground oligomer gel material；
S4: being added lime stone rubble and 1200 parts of stone, 480 parts of yellow ground in large-scale blender, and step S3 preparation is added
Ground oligomer gel material, stirring, then be added step S1 preparation 70 parts of modified ceramic microsphere particle, add suitable quantity of water sufficiently to stir
It mixes and fine coal lacquer putty polymers concrete is prepared.
The preparation of 2 fine coal lacquer putty polymers concrete of embodiment
S1: the preparation method is the same as that of Example 1 for modified ceramic microsphere particle；
S2: the preparation method is the same as that of Example 1 for alkali-activator；
S3: it first is placed in stirrer for mixing with 200 parts of metakaolin by 200 parts of flyash, the alkali of step S2 preparation is added
Property exciting agent, 7.5 parts of poly carboxylic acid series water reducer, be sufficiently stirred, be added 20 parts of polyacrylonitrile fibre, be mixed；
S4: ground polymers concrete is prepared with embodiment 1.
The preparation of fine coal lacquer putty polymers concrete of the comparative example 1 without modified ceramic microballoon
S1: the preparation method is the same as that of Example 1 for alkali-activator；
S2: ground oligomer gel material is prepared with embodiment 1；
S3: being added lime stone rubble and 1200 parts of stone, 480 parts of yellow ground in large-scale blender, and step S2 preparation is added
Ground oligomer gel material, stirring, add suitable quantity of water to be sufficiently stirred and fine coal lacquer putty polymers concrete be prepared.
The preparation of the fine coal lacquer putty polymers concrete of 2 non-polymer fiber of comparative example
S1: the preparation method is the same as that of Example 1 for modified ceramic microsphere particle；
S2: the preparation method is the same as that of Example 1 for alkali-activator；
S3: it first is placed in stirrer for mixing with 200 parts of metakaolin by 200 parts of flyash, the alkali of step S2 preparation is added
Property exciting agent, is sufficiently stirred；
S4: ground polymers concrete is prepared with embodiment 1.
The preparation of 3 Portland cement concrete (PCC) of comparative example
Lime stone rubble and 1200 parts of stone, 680 parts of yellow ground, ordinary portland cement (wave are added in large-scale blender
Lactel cement) 300 parts, 50 parts of flyash, 20 parts of additive, suitable quantity of water is added, is sufficiently stirred and normal silicate water is prepared
Cement concrete.
The comparison of 1 fine coal lacquer putty polymers concrete basic performance of effect example
By embodiment 1-2, the concreting test specimen of comparative example 1-3 preparation passes through the anti-of detection concrete sample
Compressive Strength, flexural strength, shrinkage, impermeability carry out fine coal lacquer putty polymers concrete basic performance prepared by the present invention comprehensive
Evaluation is closed, it is shown that the specific method is as follows:
1, compression strength, flexural strength test: according to " the normal concrete mechanical property test side GB/T 50081-2002
Method standard " it carries out, preparation test test specimen, having a size of 100mm × 100mm × 100mm, reduction coefficient 0.95.
2, shrinkage test: according to GB/T 50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete
Standard " in contact method carry out, preparation test sample dimensions be 100mm × 100mm × 515mm.Shrinkage experimental condition is as follows: pouring
It builds to complete that test specimen is placed in standard curing box after demoulding in 24 hours and conserve 48 hours, moving into temperature later is 20 ± 2 DEG C, phase
The constant-temperature constant-humidity environment for being 60 ± 5% to humidity, measures the initial length of test specimen, 28 days test specimens is measured under the conditions of standard curing
Length, shrinkage from mold dimensions.
3, Standard Test Method for Permeation Resistance: the electricity according to JTJ 270-98 " agent on crack resistance of concrete chloride permeability is quickly tested " measurement concrete
Resistance and opposite chloride diffusion coefficient.
Every test result is comprehensive as shown in the table:
The comparison of 3 fine coal lacquer putty polymers concrete basic performance of table
| Compression strength (MPa) | Flexural strength (MPa) | Shrinking percentage | Chloride diffusion coefficient (cm2/s) | |
| Embodiment 1 | 47.1 | 6.24 | 154×10-6 | 1.40×10-9 |
| Embodiment 2 | 49.6 | 6.94 | 167×10-6 | 1.33×10-9 |
| Comparative example 1 | 36.9 | 4.73 | 335×10-6 | 2.56×10-9 |
| Comparative example 2 | 40.5 | 5.11 | 301×10-6 | 1.93×10-9 |
| Comparative example 3 | 30.7 | 4.02 | 420×10-6 | 4.02×10-9 |
It can be seen that the fine coal lacquer putty polymers agent on crack resistance of concrete of method preparation provided by the invention according to the data comparison of table 3
Compressive Strength and flexural strength, shrinkage, impermeability are all more preferable compared with comparative example.After water-reducing agent is added in embodiment 2, mechanical property
Energy and impermeability slightly improve；Comparative example 1 is the concrete that modified ceramic microsphere particle is not added, it can be seen that its mechanical property
It can be remarkably decreased, shrinking percentage becomes larger, impermeability weakens, this is because the three-dimensional rack-like knot that ceramic microsphere is formed in ground polymers
It is effectively filled in structure, its compression strength and contraction distortion is made to have apparent reduction；Comparative example 2 is that polymer fiber is not added
Concrete, although compressive property and impermeability are weakened, its Weaken degree does not have ceramic microsphere bring significant effect；It is right
Than embodiment 3 be common Portland cement concrete (PCC), compression strength, flexural strength, shrinking percentage and impermeability be it is worst,
It is significant in every basic performance to illustrate that fine coal lacquer putty polymers concrete prepared by the present invention has really compared to normal concrete
It improves.
2 fine coal lacquer putty polymers concrete corrosion resistant performance comparison of effect example
By embodiment 1-2, the concreting test specimen of comparative example 1-3 preparation passes through those skilled in the art's routine
Detection method carries out corrosion resistance detection, and the specific method is as follows:
Anticorrosive property test: test test specimen is poured, having a size of 100mm × 100mm × 100mm, is conserved at the standard conditions
After 28 days, taking-up is dried 16 hours under the conditions of cleaning 75 ± 5 DEG C in drying box, measures compression strength.Then test specimen is put into Jie
It is impregnated 6 months in matter solution (Adlerika that concentration is 1%), takes out test specimen and clean, dry 16 hours, measure compression strength,
Etch factor is calculated by formula " compression strength/original compression strength after erosion ", numerical value is smaller, illustrates that the degree of weathering is got over
Height, concrete corrosion resistant performance are poorer.Testing result is as shown in the table:
4 fine coal lacquer putty polymers concrete corrosion resistant performance comparison of table
| Original compression strength | Compression strength after erosion | Etch factor | |
| Embodiment 1 | 47.1 | 45.2 | 0.96 |
| Embodiment 2 | 49.6 | 47.6 | 0.96 |
| Comparative example 1 | 36.9 | 31.7 | 0.86 |
| Comparative example 2 | 40.5 | 36.5 | 0.90 |
| Comparative example 3 | 30.7 | 24.6 | 0.80 |
The test specimen of concreting is in routine use, and most vulnerable to the erosion of sulfate, mechanism is, with sulphur
In the environment of hydrochlorate, concrete sucks sulfate liquid in concrete bodies under the action of capillary, and is exposed to the atmosphere
Concrete due to capillary effect will transmit moisture evaporation.The minerals being dissolved in water are concentrated and are precipitated, with dampening
The surface and inside for dividing evaporation to remain in concrete, show white mark, bloom, make turgor pressure of the concrete by sulphate crystal
Power promotes concrete to destroy since surface layer, and destruction first occurs at SEA LEVEL VARIATION area, alternation of wetting and drying area.In section of getting damp
By erosion, there is the crystallization of white shape salt in certain locations on ground, and some areas are presented bean curd scoriform, make the concrete of building
Strength reduction finally results in complete destruction.
By table 4 test data find, the corrosion resistance of embodiment 1-2 is best, when in concrete be free of modified ceramic
When microsphere particle, corrosion resistance is remarkably decreased, this is because modified ceramic microsphere surface coats anti-corrosive rust inhibitor first,
Slow down erosive velocity to a certain extent, in addition, the inactive surfaces of ceramic microsphere are also resistant to even if anti-corrosive rust inhibitor exhausts or falls off
Chemical attack, it is most important that, ceramic microsphere arranges closely between concrete pore, reduces foregoing concrete capillary
Pipe effect, to play good protective action to concrete.The result of comparative example 2 illustrates that polymer fiber can also be helped
Help the corrosion resistance of enhancing concrete.
Fly ash content optimizes in 3 fine coal lacquer putty polymers concrete of embodiment
S1: the preparation method is the same as that of Example 1 for modified ceramic microsphere particle；
S2: the preparation method is the same as that of Example 1 for alkali-activator；
S3: ground oligomer gel material preparation method is with embodiment 1, in order to screen flyash optimal addn, with flyash
Amount to 400 parts with metakaolin, it is 0,10%, 30%, 50%, 70%, 90%, 100% totally 7 groups that flyash accounting, which is respectively set,
Test；
S4: ground polymers concrete is prepared with embodiment 1.
It is carried out according to GB/T 50081-2002 " standard for test methods of mechanical properties of ordinary concrete ", preparation test test specimen,
Having a size of 100mm × 100mm × 100mm, after standard curing in 28 days, the compression strength of ground polymers concrete sample is tested,
Flexural strength, test result are as shown in the table:
Fly ash content optimizes in 5 fine coal lacquer putty polymers concrete of table
It can be seen that the addition of flyash compared with the ground polymers concrete for not adding flyash completely from upper table data
The flexural strength of concrete can be improved, it may be possible to because metakaolin relative flexibility is not strong, but when flyash additional amount is super
When 50%, flexural strength can decline again；Flyash is also in this way, when flyash accounting is 30% for concrete crushing strength
When, compression strength is most strong, and content changes unobvious when being 50%, and when additional amount is more than 50%, compression strength also will appear significantly
Downward trend comprehensively considers, and the incorporation accounting of flyash selects 30-50%.
4 modified ceramic microsphere particle of embodiment influences concrete corrosion resistant
In the present invention, it is modified by coating one layer of coating containing anti-corrosive rust inhibitor to conventional ceramic microsphere surface
Ceramic microsphere particle is allowed to be not easy to fall off in whipping process to enhance the adhesion strength between coating and ceramic microsphere, uses
Acrylic acid ester emulsion, styrene-acrylic emulsion and silica solution cooperate, and anti-corrosive rust inhibitor is helped to be securely fastened on ceramic microsphere.Although traditional
Concrete in can also add anti-corrosive rust inhibitor and improve corrosion resistance, but a small amount of anti-corrosion is added in the biggish concrete of volume
Corrosion inhibitor will lead to dispersion unevenly, and the effect of anti-corrosive rust inhibitor plays simultaneously bad.And in the present invention, adhere to anti-corrosive rust inhibitor
On ceramic microsphere surface, the good mobility of ceramic microsphere is filled in microballoon in ground polymers three-dimensional rack-like structure interval, at this time
The anti-corrosive rust inhibitor of microsphere surface disperses wherein, to play corrosion-prevention rust-resistance effect more preferable also with ceramic microsphere.
Imagine to verify inventor's initial stage, four groups of tests, ground oligomer gel is arranged for modified ceramic microballoon in this test
Material preparation method with embodiment 1, is added coarse-fine aggregate and prepares in Concrete respectively by the preparation of following four kinds of methods
Four kinds of concrete out are respectively: method 1, are normally added 70 parts of modified ceramic microsphere particle prepared by the present invention；Method 2, ceramics
70 parts of microballoon are individually separately added into 7 parts of anti-corrosive rust inhibitor；Method 3 is only added 70 parts of ceramic microsphere；Anti-corrosion is only added in method 4
7 parts of corrosion inhibitor.
Test test specimen is poured, having a size of 100mm × 100mm × 100mm, after conserving 28 days at the standard conditions, taking-up is washed
Only it is dried 16 hours under the conditions of 75 ± 5 DEG C in drying box, measures compression strength.Then test specimen being put into medium solution, (concentration is
1% Adlerika) middle immersion 6 months, it takes out test specimen and cleans, dry 16 hours, measurement compression strength, calculating etch factor,
Testing result is as shown in the table:
6 modified ceramic microsphere particle of table influences concrete corrosion resistant
| Original compression strength | Compression strength after erosion | Etch factor | |
| Method 1 | 47.1 | 45.2 | 0.96 |
| Method 2 | 47.6 | 42.8 | 0.90 |
| Method 3 | 45.9 | 40.4 | 0.88 |
| Method 4 | 37.0 | 29.6 | 0.80 |
It can be seen that the original compression strength base of concrete prepared by method 1, method 2, method 3 according to the comparing result of table 6
This is without significant difference, this is because the time is short after pouring 28 days, there are no causing to corrode, so even ceramic microsphere and anti-corrosion
Corrosion inhibitor individually adds or only adds ceramic microsphere, and compression strength is all similar, the difference that data are shown in table, we analyze more
Be measurement error, but in method 4 only addition anti-corrosive rust inhibitor without ceramic microsphere when, original compression strength obviously drops
It is low.After impregnating 6 months in Adlerika, the concrete crushing strength that method 1 adds modified ceramic microsphere particle weakens width
Degree is minimum, etch factor highest, is 0.96；Method 2 is taken second place, and illustrates that ceramic microsphere and anti-corrosive rust inhibitor separate independent additive effect
And it is bad；The concrete corrosion resistant effect only added ceramic microsphere or only add anti-corrosive rust inhibitor is lower.Above-mentioned test result
Foregoing imagination has been confirmed, anti-corrosive rust inhibitor is coated in ceramic microsphere surface, allows ceramic microsphere with anti-corrosive rust inhibitor
It is filled in ground polymers rack-like structure, plays corrosion-prevention rust-resistance performance more preferable.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of fine coal lacquer putty polymers concrete, the concrete is using flyash and metakaolin as substrate, sodium hydroxide, hydrogen-oxygen
Changing potassium, the combination of one or more of potassium silicate and waterglass is alkali-activator, add modified ceramic microsphere particle,
Polymer fiber, coarse aggregate, fine aggregate, He Shui are prepared, and it includes: that ceramics are micro- that the modified ceramic microsphere particle, which prepares raw material,
Ball, silica solution and anti-corrosive rust inhibitor and acrylic acid ester emulsion and/or styrene-acrylic emulsion.
2. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the fine coal lacquer putty polymers concrete
Material is prepared including following mass fraction: 1-400 parts of flyash, 1-400 parts of metakaolin, sodium hydroxide, potassium hydroxide, silicon
The combination of one or more of sour potassium amounts to 20-30 parts, 150-200 parts of waterglass, modified ceramic microsphere particle 40-
100 parts, 10-50 parts of polymer fiber, 800-1500 parts of coarse aggregate, 400-500 parts of fine aggregate, 10-20 parts of water, wherein modified
Ceramic microsphere particle preparation raw material includes: 100-500 parts of ceramic microsphere, 20-60 parts of silica solution and 20-40 parts of anti-corrosive rust inhibitor,
And acrylic acid ester emulsion and/or styrene-acrylic emulsion amount to 30-50 parts.
3. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the fine coal lacquer putty polymers concrete
In further include 5-15 parts of water-reducing agent, the water-reducing agent be selected from poly carboxylic acid series water reducer.
4. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the polymer fiber is selected from
The combination of one or more of polypropylene fibre, polyacrylonitrile fibre, vinal；The alkali-activator choosing
From modulus be 2.5-3.0 potassium silicate solution and modulus be 1.2-2.0 waterglass combination.
5. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the coarse aggregate connects selected from 5-15mm
The lime stone rubble or stone of continuous gradation；The yellow ground that the fine aggregate is 1.2-1.5 selected from fineness modulus, cement content 0.7%,
Partial size is 5mm or less.
6. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the metakaolin is natural high
Powder of the ridge soil after 600-900 DEG C of calcining more than resulting 200 mesh；Fly ash grain is having a size of 1-100 μm, silica and oxygen
Change aluminium content and is greater than 70%.
7. fine coal lacquer putty polymers concrete according to claim 1, which is characterized in that the modified ceramic microsphere particle
It is to coat one layer of functional coating containing anti-corrosive rust inhibitor in conventional ceramic microsphere surface, the ceramic microsphere particle can be selected from
Solid ceramic microballoon or hollow ceramic microspheres, ceramic microsphere partial size range are 10-30 μm.
8. a kind of preparation method of fine coal lacquer putty polymers concrete described in claim 1, specifically comprises the following steps:
(1) prepared by modified ceramic microsphere particle: mixing is sufficiently stirred in acrylic acid ester emulsion and/or styrene-acrylic emulsion and silica solution,
Anti-corrosive rust inhibitor is added, dispersion is stirred until homogeneous to obtain spray coating liquor, and spray coating liquor is uniformly sprayed on ceramic microsphere using spray equipment
Surface, it is dry at a temperature of 60-90 DEG C, obtain modified ceramic microsphere particle；
(2) alkali-activator is prepared in advance: by one of water, waterglass, sodium hydroxide, potassium hydroxide, sodium metasilicate, potassium silicate
Or two or more combinations is sufficiently mixed, it is spare that stirring and dissolving is placed on room temperature；
(3) prepared by oligomer gel material: first mixing flyash with metakaolin, adds the alkaline excitation prepared in advance
Agent is sufficiently stirred, and polymer fiber is added, and is mixed；
(4) prepared by polymers concrete: coarse aggregate and fine aggregate being added in agitating device, ground oligomer gel material is added and stirs
It mixes, adds modified ceramic microsphere particle, be sufficiently stirred and fine coal lacquer putty polymers concrete is prepared.
9. preparation method according to claim 8, which is characterized in that spraying process is in 50-60 DEG C of temperature in the step (1)
Degree is lower to carry out, and obtained modified ceramic microballoon crosses 300-400 mesh.
10. a kind of fine coal lacquer putty polymers concrete described in claim 1 is in salt-soda soil engineering, ocean engineering, chemical factory, medicine
Application in product or the construction of chemical fertilizer production workshop.
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