CN108483960A - A kind of wear-resisting admixture for wear-resisting road concrete - Google Patents
A kind of wear-resisting admixture for wear-resisting road concrete Download PDFInfo
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- CN108483960A CN108483960A CN201810485883.8A CN201810485883A CN108483960A CN 108483960 A CN108483960 A CN 108483960A CN 201810485883 A CN201810485883 A CN 201810485883A CN 108483960 A CN108483960 A CN 108483960A
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- wear
- resisting
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- admixture
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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
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of wear-resisting admixtures for wear-resisting road concrete, include the component of following parts by weight：1~30 part of slag, 0.01~5 part of polymer dispersion powder, Nano-meter SiO_220.3~0.5 part, 0.01~0.05 part of graphene oxide, 1~10 part of staple fiber, 2~5 parts of SILICA FUME, 2~5 parts of miberal powder, 0.1~3 part of flyash；Concrete prepared by admixture of the present invention has high abrasion, high cracking resistance, durability good；With preferable workability；Resource in short supply has been saved, the intensity of the concrete prepared using this admixture is also improved；Prepared by the abrasion-proof concrete that can be used for road engineering, it can also be used to which airfield runway, hydraulic engineering etc. need the concrete works of high-wearing feature.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of wear-resisting blending for wear-resisting road concrete
Material.
Background technology
Concrete admixture is in order to improve concrete performance, using water wisely, adjustment strength grade of concrete, in concrete
The natural or artificial epipastic mineral that can improve concrete performance is mixed when mix；The items of concrete can be improved
Can, such as improve the working performance of concrete；With the extensive use of concrete material, begin to use in some special dimensions people
Different types of concrete admixture, the performance to change concrete material make it meet the needs in the field.
Road concrete is primarily referred to as the cement that cement concrete pavement, bridge floor, airport runway surface plate body structure use
Concrete；This be it is a kind of using and the more harsh harsh moving loading structure object of environmental condition, it is desirable that have higher flexural strength,
The advantages such as high-wearing feature；China's correlation engineering mainly uses normal concrete at present, however normal concrete only has compression strength
Advantage, flexural strength and wearability be not generally high；There is a large amount of early damage phenomenon in Common Concrete Pavement, as faulting of slab ends,
Undisguisedly, cracking and disconnected plate etc. are destructive；And it is one of cement concrete pavement most degradation phenomena to wear；Road surface and bridge floor are direct
By the structure that wheel wear destroys, therefore, wearability is the resistance to of pavement concrete common problem and pavement concrete
Most important, most one of distinct issues in long performance；The Current Highway volume of traffic rapidly increases, car speed is accelerated, overloading
Seriously, the traffic loading of different kinds of roads also greatly increases, and more stringent requirements are proposed for the wear-resisting property for the surface concrete that satisfies the need.
At present there are also abrasion-proof concrete, the patent if number of patent application is 2015106958273 discloses a kind of resist
Wear-resisting concrete is rushed, proposes to replace part of cement using flyash as mineral admixture, part of coarse aggregates is replaced with centimetre stone,
But the concrete material of the invention biases toward shock resistance；The patent that number of patent application is 2003101113282 discloses one
Kind scour and abrasion resistant concrete, proposition use Ma'an Mountain's iron ore as coarse aggregate, and 12%~30% processing silica flour glue is added
(011066121) it is used as extra material；Laboratory anti-abrasion strength is in 15h/cm or so, but the invention raw material are by territory restriction,
There is no be widely popularized in road engineering；Number of patent application discloses a kind of high wear resisting steel dregs for 2005100270995
Road concrete, the invention improve concrete abrasion-resistant by mixing appropriate slag in road concrete, and 28d abrasion resistances are
1.65~1.77, but be not obvious relative to the effect that normal concrete abrasion resistance improves.
Invention content
The present invention provide it is a kind of may make road concrete have high abrasion, high cracking resistance, workability is good, durability is good
The wear-resisting admixture of high-wearing feature road concrete.
The technical solution adopted by the present invention is：A kind of wear-resisting admixture for wear-resisting road concrete, including it is following heavy
Measure the component of part：1~30 part of slag, 0.01~5 part of polymer dispersion powder, Nano-meter SiO_220.3~0.5 part, graphene oxide
0.01~0.05 part, 1~10 part of staple fiber, 2~5 parts of SILICA FUME, 2~5 parts of miberal powder, 0.1~3 part of flyash.
Further, the polymer dispersion powder is vinylacetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and the moon
Silicic acid vinyl acetate ternary polymerization rubber powder, vinylacetate and ethylene and higher aliphatic vinyl acetate ternary polymerization rubber powder, acetic acid second
Enester and higher aliphatic vinyl acetate copolymerization rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate
And in higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder, styrene and butadiene copolymer rubber powder
One or two kinds of or more mixtures constituted with arbitrary proportion.
Further, the slag grain size ranging from 0~10mm, iron-holder≤10%, f-CaO≤5%.
Further, the nano silicon dioxide particle size range is 1~100nm.
Further, the staple fiber is that one or both of basalt fibre or PE fibers are made up of arbitrary proportion
Mixture.
Further, the SILICA FUME average grain diameter is 0.1~0.3 μm.
Further, the miberal powder is one kind in two kinds of super finely ground slags of P800 and P1000 types.
The beneficial effects of the invention are as follows：
(1) present invention changes intergranular stress and cement granules and water, aggregate and mortar by adding slag
Between cohesive strength, the workability of concrete can be improved；
(2) present invention can refine the pore structure of concrete, the water conservation of reinforcing material by adding polymer dispersion powder
Property, prevent cement mortar from crossing rapid hardening, drying and cracking；
(3) present invention addition nano silicon dioxide, the chemism and catalytic activity of nano particle are all far above common
Grain, the particle filing effect of nano material also improve the density of concrete, improve the wearability of concrete；
(4) present invention can significantly reduce the generation of needle-shaped entringite so that Behavior of Hardened Cement Paste knot by adding graphene oxide
Structure is finer and close, has humidification for the intensity and wearability of road concrete；
(5) present invention, due to the effect of the prevent-crevice theory and refinement crack of fiber, can be improved mixed by adding staple fiber
Coagulate the wearability of soil；
(6) it is net that concrete density, early strength, durability, raising cement can be improved by adding SILICA FUME in the present invention
Adhesion strength between slurry and aggregate improves pore-size distribution in cement paste body, improves the wearability of concrete；
(7) miberal powder that the present invention adds makes the amount of crystals in concrete interface area and porosity reduce, makes Behavior of Hardened Cement Paste more
It is fine and close；
(8) road concrete prepared by the present invention has high abrasion, high cracking resistance, durability good, and with preferable
Workability.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.
A kind of wear-resisting admixture for wear-resisting road concrete includes the component of following parts by weight：1~30 part of slag,
0.01~5 part of polymer dispersion powder, Nano-meter SiO_220.3~0.5 part, 0.01~0.05 part of graphene oxide, staple fiber 1~10
Part, 2~5 parts of SILICA FUME, 2~5 parts of miberal powder, 0.1~3 part of flyash.
Polymer dispersion powder is vinylacetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and moon silicic acid vinyl acetate ternary
It is copolymerized rubber powder, vinylacetate and ethylene and higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate and higher aliphatic
Vinyl acetate is copolymerized rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate and higher fatty acids second
One or both of enester ternary polymerization rubber powder, vinylacetate homopolymerization rubber powder, styrene and butadiene copolymer rubber powder and with
On the mixture that is constituted with arbitrary proportion.
Slag grain size ranging from 0~10mm, iron-holder≤10%, f-CaO≤5%；Robustness loss≤5%, loose media
Product density >=2000kg/m3, apparent density >=2600kg/m3, Los Angeles abrasion loss≤16%；Slag is the slag of steel-making discharge,
It is a kind of aggregate being made of multi mineral and glass state material；Its main chemical compositions should be CaO, SiO2、MgO、Fe2O3、
MnO、Al2O3And P2O5Deng；Essential mineral mutually should be C3S and C2S, slag chemistry are more similar to mineralogical composition to cement；Slag
Has the advantages that high abrasion.
Nano silicon dioxide particle size range is 1~100nm, and the commercially available nano silicon dioxide of use, appearance is amorphous white
Color powder.
Staple fiber is the mixture that one or both of basalt fibre or PE fibers are made up of arbitrary proportion；It draws
Stretch 3000~4500MPa of intensity, 80~120GPa of elasticity modulus, elongation at break 2~3%, 2.5~3.0g/cm3 of density, length
Spend 2~12mm.
SILICA FUME average grain diameter is 0.1~0.3 μm, and fineness accounts for 80% or more less than 1 μm.
Miberal powder is one kind in two kinds of super finely ground slags of P800 and P1000 types, P800 specific surface areas >=800m2/ kg, P1000
Specific surface area >=1000m2/kg。
Embodiment 1
A kind of wear-resisting admixture for wear-resisting road concrete includes the component of following parts by weight：5 parts of slag can divide
Dissipate 0.2 part of latex powder, Nano-meter SiO_220.3 part, 0.01 part of graphene oxide, 1 part of staple fiber, 2 parts of SILICA FUME, 2 parts of miberal powder, powder
0.1 part of coal ash.
Admixture manufactured in the present embodiment is used for concrete, under the conditions of the concrete 28d standard curings of preparation, unit plane
Product abrasion loss is 1.11kg/m2, only normal concrete unit area abrasion loss 2.23kg/m21/2.
Embodiment 2
A kind of wear-resisting admixture for wear-resisting road concrete includes the component of following parts by weight：15 parts of slag can divide
Dissipate 0.5 part of latex powder, Nano-meter SiO_220.4 part, 0.03 part of graphene oxide, 5 parts of staple fiber, 3 parts of SILICA FUME, 3 parts of miberal powder, powder
1 part of coal ash.
Admixture manufactured in the present embodiment is used for concrete, under the conditions of the concrete 28d standard curings of preparation, unit plane
Product abrasion loss is 0.65kg/m2, only normal concrete unit area abrasion loss 2.23kg/m21/3.
Embodiment 3
A kind of wear-resisting admixture for wear-resisting road concrete includes the component of following parts by weight：30 parts of slag can divide
Dissipate 1 part of latex powder, Nano-meter SiO_220.5 part, 0.05 part of graphene oxide, 10 parts of staple fiber, 5 parts of SILICA FUME, 5 parts of miberal powder, fine coal
3 parts of ash.
Admixture manufactured in the present embodiment is used for concrete, under the conditions of the concrete 28d standard curings of preparation, unit plane
Product abrasion loss is 0.43kg/m2, only normal concrete unit area abrasion loss 2.23kg/m21/5.
Slag grain size ranging from 0~10mm that the present invention uses, performance requirement are：Iron-holder≤10%, f-CaO≤5%,
Robustness loss≤5%, loose bulk density >=2000kg/m3, apparent density >=2600kg/m3, Los Angeles abrasion loss≤
16%；Slag is spiked into as mineral admixture in concrete, can change intergranular stress and cement granules and water,
Cohesive strength between aggregate and mortar；Slag activity it is low, aquation initial reaction degree is low, and water requirement is few, with Steel-slag for etc. matter
The cement of amount is equivalent under the premise of water consumption is constant and increases the ratio of mud, therefore incorporation slag can improve the work of concrete
The property made；A certain amount of polymer dispersion powder is mixed, the admixture of polymer dispersion powder can not only refine the pore structure of concrete,
Can with can reinforcing material water-retaining property, prevent cement mortar from crossing rapid hardening, drying and cracking phenomena；Mix a certain amount of nanometer
For silicon dioxide granule size range at 1~100 nanometer, micro-structure is spherical shape, is in cotton-shaped and netted quasi- grain structure；Using receiving
Rice material surface effect and small-size effect, so that the surface atom number of nano particle, surface area and surface energy are all rapid
Increase, so the chemism and catalytic activity of nano particle are all far above plain particles；In addition, the particle filling of nano material
Effect also improves the density of concrete, so as to improve the wearability of concrete；Graphene oxide is the oxide of graphene,
Its color is brown color, appearance powdery；The incorporation of graphene oxide can significantly reduce the hole inside Behavior of Hardened Cement Paste, improve cement
The pore structure of stone；Meanwhile after adding graphene oxide, the more uniform densification of gel in cement；In addition, graphene oxide
Incorporation can significantly reduce the generation of needle-shaped entringite so that water mudrock structure is finer and close；Therefore, the incorporation of graphene oxide
There is humidification for the intensity and wearability of road concrete；Staple fiber is one kind or two of basalt fibre or PE fibers
Kind, incorporation staple fiber can improve the wearability of concrete, the reason is that the work of the prevent-crevice theory of fiber and refinement crack
With and fiber fracture overlap joint effect and to the restraining function of separated cement fragment, the volume of fiber is bigger, these effect
It should be more apparent with effect；The fineness of SILICA FUME accounts for 80% or more less than 1 μm, and average grain diameter is at 0.1-0.3 μm；SILICA FUME has
Very high potential pozzolanic activity mixes and concrete density, early strength, durability can be improved in concrete, improves cement
Adhesion strength between net slurry and aggregate improves pore-size distribution in cement paste body, and then improves the wearability of concrete；Miberal powder
For super finely ground slag, high fineness, the high activity of super finely ground slag make it have preferable fillibility and pozzolanic activity to make in concrete
With, make concrete interface area amount of crystals and porosity reduce, keep Behavior of Hardened Cement Paste finer and close.
Concrete prepared by admixture of the present invention has high abrasion, high cracking resistance, durability good；With preferable and easy
Property；Resource in short supply has been saved, the intensity of the concrete prepared using this admixture is also improved；It can be used for the resistance to of road engineering
Prepared by grinding concrete, it can also be used to which airfield runway, hydraulic engineering etc. need the concrete works of high-wearing feature.
Claims (10)
1. a kind of wear-resisting admixture for wear-resisting road concrete, which is characterized in that include the component of following parts by weight：Slag
1~30 part, 0.01~5 part of polymer dispersion powder, Nano-meter SiO_220.3~0.5 part, 0.01~0.05 part of graphene oxide, short fibre
1~10 part of dimension, 2~5 parts of SILICA FUME, 2~5 parts of miberal powder, 0.1~3 part of flyash.
2. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that it is described can
Dispersed latex powder be vinylacetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and moon silicic acid vinyl acetate ternary polymerization rubber powder,
Vinylacetate and ethylene and higher aliphatic vinyl acetate ternary polymerization rubber powder, vinylacetate and higher aliphatic vinyl acetate are total
Poly- rubber powder, acrylate and styrene copolymerized rubber powder, vinylacetate and acrylate and higher aliphatic vinyl acetate ternary are total
One or both of poly- rubber powder, vinylacetate homopolymerization rubber powder, styrene and butadiene copolymer rubber powder or more are arbitrarily to compare
The mixture that example is constituted.
3. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that the steel
Slag particle diameter ranging from 0~10mm, iron-holder≤10%, f-CaO≤5%.
4. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that described to receive
Rice silica particle size range is 1~100nm.
5. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that described short
Fiber is the mixture that one or both of basalt fibre or PE fibers are made up of arbitrary proportion.
6. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that described micro-
Silica flour average grain diameter is 0.1~0.3 μm.
7. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that the mine
Powder is one kind in two kinds of super finely ground slags of P800 and P1000 types.
8. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that including with
The component of lower parts by weight：5 parts of slag, 0.2 part of polymer dispersion powder, Nano-meter SiO_220.3 part, 0.01 part of graphene oxide, short fibre
1 part of dimension, 2 parts of SILICA FUME, 2 parts of miberal powder, 0.1 part of flyash.
9. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that including with
The component of lower parts by weight：15 parts of slag, 0.5 part of polymer dispersion powder, Nano-meter SiO_220.4 part, it is 0.03 part of graphene oxide, short
5 parts of fiber, 3 parts of SILICA FUME, 3 parts of miberal powder, 1 part of flyash.
10. a kind of wear-resisting admixture for wear-resisting road concrete according to claim 1, which is characterized in that including
The component of following parts by weight：30 parts of slag, 1 part of polymer dispersion powder, Nano-meter SiO_220.5 part, it is 0.05 part of graphene oxide, short
10 parts of fiber, 5 parts of SILICA FUME, 5 parts of miberal powder, 3 parts of flyash.
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| CN201810485883.8A CN108483960A (en) | 2018-05-21 | 2018-05-21 | A kind of wear-resisting admixture for wear-resisting road concrete |
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| CN201810485883.8A CN108483960A (en) | 2018-05-21 | 2018-05-21 | A kind of wear-resisting admixture for wear-resisting road concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266199A (en) * | 2018-09-20 | 2019-01-25 | 李秀利 | A kind of anti-corrosion building coating |
| CN109734407A (en) * | 2019-03-23 | 2019-05-10 | 周口师范学院 | A kind of inorganic gel materials and preparation method thereof |
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| CN106277896A (en) * | 2015-06-10 | 2017-01-04 | 嘉华特种水泥股份有限公司 | A kind of concrete duct impact-resistant wearable agent |
| CN106517957A (en) * | 2016-11-22 | 2017-03-22 | 江苏苏博特新材料股份有限公司 | Concrete with common strength and high elastic modulus and preparation method thereof |
-
2018
- 2018-05-21 CN CN201810485883.8A patent/CN108483960A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277896A (en) * | 2015-06-10 | 2017-01-04 | 嘉华特种水泥股份有限公司 | A kind of concrete duct impact-resistant wearable agent |
| CN106517957A (en) * | 2016-11-22 | 2017-03-22 | 江苏苏博特新材料股份有限公司 | Concrete with common strength and high elastic modulus and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266199A (en) * | 2018-09-20 | 2019-01-25 | 李秀利 | A kind of anti-corrosion building coating |
| CN109734407A (en) * | 2019-03-23 | 2019-05-10 | 周口师范学院 | A kind of inorganic gel materials and preparation method thereof |
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Application publication date: 20180904 |