CN106747021A - A kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material - Google Patents
A kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material Download PDFInfo
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- CN106747021A CN106747021A CN201710051676.7A CN201710051676A CN106747021A CN 106747021 A CN106747021 A CN 106747021A CN 201710051676 A CN201710051676 A CN 201710051676A CN 106747021 A CN106747021 A CN 106747021A
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- automatically cleaning
- cement
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- high tenacity
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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
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/48—Metal
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0641—Polyvinylalcohols; Polyvinylacetates
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- 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
- C04B2111/40—Porous or lightweight materials
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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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- 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)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material, belong to concrete applied technical field.The composite includes raw material and additive, and raw material includes cement, flyash, water, fine husky, water reducer；Additive includes nano titanium oxide, chopped fiber, EPS particles.Raw material is the basic composition of the composite, and additive is the feature composition of the composite.Additive is uniformly filled in raw material.The density of automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention is the 70% of normal concrete density, improves the excessive problem of normal concrete deadweight；Due to adding fiber, the tensile capacity of lightweight concrete can be effectively improved, improve the stress performance of lightweight concrete.Due to add nano titanium oxide, can allow the organic pollution being attached on concrete surface in the presence of ultraviolet in time degraded and these degradation products fallen by rain drop erosion, concrete surface is remained cleaning.
Description
Technical field
The present invention relates to a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material, belong to concrete application technology neck
Domain.
Background technology
Concrete is high due to its compression strength, and materials are easy, simple production process and be widely applied to architectural engineering, but
That toughness is low because its tensile strength is low, from it is great and easily be stained with pollutant the shortcomings of can not well meet people couple
The requirement of building materials.
With the development of building trade, people have new requirement to concrete performance, and have made corresponding research.
Fiber concrete is that, with concrete as matrix, the cement composite substrate material made by with fiber as reinforcing material is total
Claim.The mechanical property of concrete can be improved by mixing fiber.Big Wei Keduo Prof Lees team of Michigan of the U.S. uses poly-
Alcohol fibers strengthen technology, and high tenacity cement-base composite material is obtained first【Li Vc.On engineered
cementitious composites(ECC)[J],J.Adv.Concr.Technol.2003,1(3):201-203】.The country,
Xu Shi Lang professors team also uses high strength and high flexibility modulus fibre and have developed a kind of high tenacity cement-base composite material【Patent of invention
CM 101665342A】.Fiber concrete has good tension, anti-cracking performance, but its deadweight is excessive and does not possess automatically cleaning work(
Energy.
Italcementi Cement Groups are mixed with titanium dioxide in concrete, develop automatically cleaning concrete, Ke Yifen
Solve the dirt of concrete surface.Zang Jun et al. discloses a kind of automatically cleaning concrete special additive and preparation method thereof【Invention
Patent CN 102674737A】.
Zhang Xuesong discloses a kind of EPS light aggregate concretes【A kind of EPS light aggregate concretes of Zhang Xuesong and preparation method thereof
Patent of invention CN 102875181A】.EPS light aggregate concretes have the performance of good insulation, with regular-type foam coagulation
Soil compares, and the permeability of EPS light aggregate concretes is relatively low, can effectively prevent the infiltration of liquid.
But for a long time, most of concrete technologies are only focused on improves a kind of performance of concrete, and ignores other
Defect, so as to limit the use scope of concrete.
Number of patent application 201410390127.9 discloses a kind of automatically cleaning high tenacity cement-base composite material, this material
With good tension, anti-cracking performance, while having white cleaning function.Can be widely applied to building construction, road and bridge engineering and
The fields such as defence engineering, economic results in society are notable.But its deadweight is excessive, and building material can be made in Practical Project is applied to
Amount is excessive, causes the load-carrying members heavy burden of building excessive.To solve this problem it is necessary to design a kind of automatically cleaning lightweight prevent
Ooze high tenacity concrete.
The content of the invention
The purpose of the present invention is the shortcoming for overcoming prior art, there is provided a kind of automatically cleaning lightweight antiseepage high tenacity cement base is answered
Condensation material, the material not only have lightweight the characteristics of, also with tension, self-cleaning function.
To achieve the above object, the technical solution adopted by the present invention for a kind of automatically cleaning lightweight antiseepage high tenacity cement base it is multiple
Condensation material, the composite includes raw material and additive, and raw material includes cement, flyash, water, fine husky, water reducer；Additive
Including nano titanium oxide, chopped fiber, EPS particles.Raw material is the basic composition of the composite, and additive is the composite
Feature composition.Additive is uniformly filled in raw material.
The mass ratio of each raw material is as follows, cement：Flyash：Water：It is fine husky：Water reducer=1：(1.9~2.2)：(0.8~
1.1)：(0.7~1.0)：(0.01~0.03).Nano titanium oxide volume is the 1%~5% of concrete cumulative volume, chopped fiber
Volume is the 15%~20% of concrete cumulative volume for 2%~4%, the EPS particles of concrete cumulative volume.
The chopped fiber is the combination of PVA chopped fibers and steel fibre, and the length of chopped fiber is 5.0mm~20.0mm, and PVA is fine
The volume ratio of peacekeeping steel fibre is 5:1.
The nano titanium oxide is Wastewater by Nanometer Anatase titanium dioxide.
The EPS particles are that the particle diameter of polystyrene spherical particle is 3mm~5mm.
The preparation method of automatically cleaning lightweight antiseepage high tenacity cement-base composite material provided by the present invention is as follows：
Specific steps：According to design proportion by cement, flyash, fine sand, water reducer, automatically cleaning component nanometer titanium dioxide
Titanium, EPS particles add mixer in, stirring be allowed to be uniformly dispersed within 2-3 minute, after according to design proportion add water, stirring 4-5 divide
Clock is made slurries；Chopped fiber is eventually adding, is stirred for 3-4 minutes, that is, obtained automatically cleaning lightweight antiseepage high tenacity cement base and be combined
Material.
Compared with prior art, cement-base composite material of the invention has the advantages that：
1) lightweight.
The density of automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention is normal concrete density
70%, improve the excessive problem of normal concrete deadweight.
2) material mechanical performance is good.
Automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention can be carried effectively due to adding fiber
The tensile capacity of lightweight concrete high, improves the stress performance of lightweight concrete.
3) with self-cleaning function.
Automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention can make due to adding nano titanium oxide
Be attached to the organic pollution on concrete surface in the presence of ultraviolet in time degraded and these degradation products can be by rainwater
Wash away, concrete surface is remained cleaning.
4) isolation property that insulates against sound is good, permeability is low.
Automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention has preferably relative to regular-type foam concrete
Barrier properties.
Specific embodiment
Embodiment 1
Automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention, its matrix material constituents and mass ratio：
Cement：Flyash：Water：It is fine husky：Water reducer=1：2.100：0.928：0.744：0.015.
Nano titanium oxide volume is the 1.5% of concrete cumulative volume, and chopped fiber volume is concrete cumulative volume
2.5%, EPS particle are the 15% of concrete cumulative volume, and original concrete accounts for the 81% of concrete cumulative volume.
Specific steps：According to aforementioned proportion by cement, flyash, fine sand, water reducer, automatically cleaning component nanometer titanium dioxide
Stirring is allowed to be uniformly dispersed for 2 minutes during titanium, EPS particles add mixer, after add water according to certain ratio, stir 5 minutes
It is made slurries；Fiber is eventually adding, is stirred for 3 minutes, you can obtain automatically cleaning lightweight antiseepage high tenacity cement-base composite material.
Embodiment 2
Automatically cleaning lightweight antiseepage high tenacity cement-base composite material of the invention, its matrix material constituents and mass ratio：
Cement：Flyash：Water：It is fine husky：Water reducer=1：2.080：0.930：0.744：0.025.
Nano titanium oxide volume is the 3% of concrete cumulative volume, and chopped fiber volume is the 2.5% of concrete cumulative volume,
EPS particles account for the 15% of concrete cumulative volume, and original concrete accounts for the 79.5% of concrete cumulative volume.
Specific steps：According to aforementioned proportion by cement, flyash, fine sand, water reducer, automatically cleaning component nanometer titanium dioxide
Stirring is allowed to be uniformly dispersed for 2 minutes during titanium, EPS particles add mixer, after add water according to certain ratio, stir 5 minutes
It is made slurries；Fiber is eventually adding, is stirred for 3 minutes, you can obtain automatically cleaning lightweight antiseepage high tenacity cement-base composite material.
Due to replacing coarse aggregate with EPS particles in the present invention so that the density of concrete only has the 70% of normal concrete,
And fibrous material is with the addition of in concrete so that the tension of concrete, compressive property has obtained certain improvement, concrete
Compression strength can reach 20Mpa, and its tensile strength can reach 2.1Mpa, and when test specimen is impacted, show good
Toughness.
Volume of the EPS particles in the automatically cleaning lightweight antiseepage high tenacity cement-base composite material designs very crucial, EPS
Particles filled volume is excessive to cause the concrete loosely to cause shock resistance not enough；EPS particles filled volume is too small, causes
The concrete compaction causes that its deadweight is excessive, and lightweight nature is substantially reduced；The present invention propose nano titanium oxide, chopped fiber with
EPS particles are blended in cement raw material matrix, lightweight, the high-ductility of the match ratio energy effective guarantee cement-base composite material of optimization
And with self-cleaning function, realize green construction.
In application, the present invention is made test specimen, and in automatically cleaning experiment, the outdoor degradation rate of test specimen of the invention reaches
75%, embody good automatical cleaning ability.
Claims (5)
1. a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material, it is characterised in that：The composite include raw material and
Additive, raw material includes cement, flyash, water, fine husky, water reducer；Additive includes nano titanium oxide, chopped fiber, EPS
Particle；Raw material is the basic composition of the composite, and additive is the feature composition of the composite；Additive is uniformly filled
In the feed；
The mass ratio of each raw material is as follows, cement：Flyash：Water：It is fine husky：Water reducer=1：(1.9~2.2)：(0.8~1.1)：
(0.7~1.0)：(0.01~0.03)；Nano titanium oxide volume is the 1%~5% of concrete cumulative volume, and chopped fiber volume is
2%~4%, the EPS particles of concrete cumulative volume are the 15%~20% of concrete cumulative volume.
2. a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material according to claim 1, it is characterised in that：Institute
It is PVA chopped fibers and the combination of steel fibre to state chopped fiber, and the length of chopped fiber is 5.0mm~20.0mm, PVA fibers and steel fibre
Volume ratio be 5:1.
3. a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material according to claim 1, it is characterised in that：Institute
Nano titanium oxide is stated for Wastewater by Nanometer Anatase titanium dioxide.
4. a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material according to claim 1, it is characterised in that：Institute
The EPS particles i.e. particle diameter of polystyrene spherical particle is stated for 3mm~5mm.
5. a kind of automatically cleaning lightweight antiseepage high tenacity cement-base composite material according to claim 1, it is characterised in that：From
The preparation method for cleaning lightweight antiseepage high tenacity cement-base composite material is comprised the following steps that：
Cement, flyash, fine sand, water reducer, automatically cleaning component nano titanium oxide, EPS particles are added according to design proportion
In entering mixer, stirring is allowed to be uniformly dispersed for 2-3 minute, after add water according to design proportion, stir and be made slurries in 4-5 minutes；
Chopped fiber is eventually adding, is stirred for 3-4 minutes, that is, obtain automatically cleaning lightweight antiseepage high tenacity cement-base composite material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263706A (en) * | 2017-06-14 | 2017-10-20 | 河南交通职业技术学院 | Improve the stirring technique for mixing nano silicon strength cement-based grouting material performance |
| CN107602021A (en) * | 2017-10-16 | 2018-01-19 | 东南大学 | Nanometer very-high performance hybrid fiber enhancing cement-base composite material and preparation method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107263706A (en) * | 2017-06-14 | 2017-10-20 | 河南交通职业技术学院 | Improve the stirring technique for mixing nano silicon strength cement-based grouting material performance |
| CN107602021A (en) * | 2017-10-16 | 2018-01-19 | 东南大学 | Nanometer very-high performance hybrid fiber enhancing cement-base composite material and preparation method |
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