CN109336493B - A kind of nano material improvement cement-based material and its application in highway - Google Patents
A kind of nano material improvement cement-based material and its application in highway Download PDFInfo
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- CN109336493B CN109336493B CN201811119873.9A CN201811119873A CN109336493B CN 109336493 B CN109336493 B CN 109336493B CN 201811119873 A CN201811119873 A CN 201811119873A CN 109336493 B CN109336493 B CN 109336493B
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- cement
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of nano materials to improve cement-based material, by following weight percent at being grouped as: portland cement 35-50%, Bo Naite 1-2%, nano-material modified dose of 0.02-0.05%, water-reducing agent 0.5-0.8%, early strength agent 0.2-0.5%, swelling agent 2-4%, latex powder 5-8%, high purity aluminum powder 0.2-0.5%, methylhydroxypropylcellulose ether 0.1-0.2% and aggregate surplus.By the way that novel synthesis of densified refractory aggregate Bo Naite is added in the material, the corrosion resistance of cement-based material is improved, and in order to further increase the anti-seepage effect to chloride ion, the present invention is also added into nano-material modified dose of micro boron doping graphene；Nano material improvement cement-based material of the invention can be used as bridge bracket grouting material or repair materials are applied in highway.
Description
Technical field
The present invention relates to new material technology field more particularly to a kind of nano material improvement cement-based material and its in high speed
Application in highway.
Background technique
China in Recent Years highway is grown rapidly, and in order to improve quality, improves service life, it is desirable that is applied in support anchoring
The durability preferably inorganic mortar material of early epistasis is used in work.
But the bridge pad of highway is mostly in water level hereinafter, erosion by water flow, geological hydrology in addition
The vibration that other such environmental effects such as variation and vehicle driving generate, concrete structure will appear damage, be particularly due to
The influence of expansion effect causes part bump, and when reparation not only increases road surface cost, and can cause to traffic very big
Pressure.
Chinese invention patent CN101486545A discloses a kind of expansion controllable ultra high-early strength support saddle mortar material and its system
Preparation Method.The mortar has many advantages, such as that good mobility, early strength height, later strength not retraction, expansion character are good, but should
The swelling agent and sand material that mortar material uses are expensive, and the additive component volume of use is high, considerably increase material cost,
And contain chloride ion, harm is generated to mortar durability.
In order to further increase the corrosion resistance of material especially to the tolerance performance of chloride ion, the present invention provides one
Kind nano material improvement cement-based material and its application in highway.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of nano material improvement cement-based material and its
Application in highway.
Technical scheme is as follows:
A kind of nano material improves cement-based material, by following weight percent at being grouped as:
Portland cement 35-50%
Bo Naite 1-2%
Nano-material modified dose of 0.02-0.05%
Water-reducing agent 0.5-0.8%
Early strength agent 0.2-0.5%
Swelling agent 2-4%
Latex powder 5-8%
High purity aluminum powder 0.2-0.5%
Methylhydroxypropylcellulose ether 0.1-0.2%
Aggregate surplus.
Preferably, the portland cement is the portland cement that strength of cement grade is at or above 42.5.
Preferably, described nano-material modified dose is boron doping graphene.
Preferably, in the boron doping graphene, the doping of boron is 1-1.5%.
Preferably, the water-reducing agent is naphthalene sulfonate water-reducing agent；The early strength agent is calcium formate, the swelling agent
For ZY type swelling agent.
Preferably, the aluminium content in the high purity aluminum powder is higher than 99.9%.
Preferably, the aggregate is the fine sand that partial size is 1-3mm.
Preferably, the preparation method of nano material improvement cement-based material, comprising the following steps:
A, the portland cement for taking Bo Naite, nano-material modified dose and Bo Naite 3-5 times weight, carries out repeatedly after mixing
Dry grinding crosses 800 meshes, obtains admixed finepowder；
B, by remaining portland cement, water-reducing agent, early strength agent, swelling agent, latex powder, methylhydroxypropylcellulose ether and
Aggregate precise is placed in blender, is uniformly mixed；Admixed finepowder is added, continues to stir evenly；
C, it is passed through nitrogen in blender, excludes air, is then rapidly added high purity aluminum powder, continues to stir evenly, obtain
Cement base siccative；
D, the water of cement base siccative total weight 20-40% is added, is in the milk after mixing evenly.
Nano material improvement cement-based material of the invention can be used as bridge bracket grouting material or repair materials application
In highway.
The invention has the beneficial effects that:
Bo Naite is a kind of novel synthesis of densified refractory aggregate based on calcium hexaluminate (CA6) mineral facies.CA6 have with
Lower main performance: very high refractoriness；Solubility in iron content slag is low；It is steady in reducing atmosphere (such as carbon monoxide)
Qualitative height；Chemical stability in alkaline environment is good；(steel and non-ferrous metal) low to the wetability of molten metal and slag.
Bo Naite is applied in refractory material as aggregate to which the corrosion resistance for improving refractory material has obtained extensively
General report, but Bo Naite's is expensive, but Bo Naite is applied in highway material, rather than in refractory material not yet
It appears in the newspapers；The present invention joined Bo Naite not only in order to reach the better high-strength corrosion resistant effect of antiseepage, and in order into one
Step improves the anti-seepage effect to chloride ion, is also added into nano-material modified dose of micro boron doping graphene, which can
It chloride ion to be fixed in the microcellular structure of Bo Naite, permeate it can not further to material internal.
In conclusion nano material of the invention improves cement-based material, by the way that calcium hexaluminate (CA6) is added in the material
A kind of novel synthesis of densified refractory aggregate Bo Naite of mineral facies, improves the corrosion resistance of cement-based material, and in order into
One step improves the anti-seepage effect to chloride ion, and the present invention is also added into nano-material modified dose of micro boron doping graphene；This
The nano material improvement cement-based material of invention can be used as bridge bracket grouting material or repair materials are applied to highway
In.
Specific embodiment
Embodiment 1:
A kind of nano material improves cement-based material, by following weight percent at being grouped as:
Portland cement 42%
Bo Naite 1.5%
Nano-material modified dose 0.03%
Water-reducing agent 0.7%
Early strength agent 0.4%
Swelling agent 3.5%
Latex powder 7%
High purity aluminum powder 0.3%
Methylhydroxypropylcellulose ether 0.15%
Aggregate surplus.
The portland cement is the portland cement that strength of cement grade is at or above 42.5.
Described nano-material modified dose is boron doping graphene；In the boron doping graphene, the doping of boron is
1.25%。
The water-reducing agent is naphthalene sulfonate water-reducing agent；The early strength agent is calcium formate, and the swelling agent is ZY type
Swelling agent.
Aluminium content in the high purity aluminum powder is higher than 99.9%.
The aggregate is the fine sand that partial size is 1-3mm.
The preparation method of the nano material improvement cement-based material, comprising the following steps:
A, the portland cement for taking Bo Naite, nano-material modified dose and 4 times of weight of Bo Naite, is done repeatedly after mixing
Mill crosses 800 meshes, obtains admixed finepowder；
B, by remaining portland cement, water-reducing agent, early strength agent, swelling agent, latex powder, methylhydroxypropylcellulose ether and
Aggregate precise is placed in blender, is uniformly mixed；Admixed finepowder is added, continues to stir evenly；
C, it is passed through nitrogen in blender, excludes air, is then rapidly added high purity aluminum powder, continues to stir evenly, obtain
Cement base siccative；
D, the water of cement base siccative total weight 35% is added, is in the milk after mixing evenly.
Embodiment 2:
A kind of nano material improves cement-based material, by following weight percent at being grouped as:
Portland cement 50%
Bo Naite 1%
Nano-material modified dose 0.05%
Water-reducing agent 0.5%
Early strength agent 0.5%
Swelling agent 2%
Latex powder 8%
High purity aluminum powder 0.2%
Methylhydroxypropylcellulose ether 0.2%
Aggregate surplus.
The portland cement is the portland cement that strength of cement grade is at or above 42.5.
Described nano-material modified dose is boron doping graphene；In the boron doping graphene, the doping of boron is
1%。
The water-reducing agent is naphthalene sulfonate water-reducing agent；The early strength agent is calcium formate, and the swelling agent is ZY type
Swelling agent.
Aluminium content in the high purity aluminum powder is higher than 99.9%.
The aggregate is the fine sand that partial size is 1-3mm.
The preparation method of the nano material improvement cement-based material, comprising the following steps:
A, the portland cement for taking Bo Naite, nano-material modified dose and 5 times of weight of Bo Naite, is done repeatedly after mixing
Mill crosses 800 meshes, obtains admixed finepowder；
B, by remaining portland cement, water-reducing agent, early strength agent, swelling agent, latex powder, methylhydroxypropylcellulose ether and
Aggregate precise is placed in blender, is uniformly mixed；Admixed finepowder is added, continues to stir evenly；
C, it is passed through nitrogen in blender, excludes air, is then rapidly added high purity aluminum powder, continues to stir evenly, obtain
Cement base siccative；
D, the water of cement base siccative total weight 20% is added, is in the milk after mixing evenly.
Embodiment 3:
A kind of nano material improves cement-based material, by following weight percent at being grouped as:
Portland cement 35%
Bo Naite 2%
Nano-material modified dose 0.02%
Water-reducing agent 0.8%
Early strength agent 0.2%
Swelling agent 4%
Latex powder 5%
High purity aluminum powder 0.5%
Methylhydroxypropylcellulose ether 0.1%
Aggregate surplus.
The portland cement is the portland cement that strength of cement grade is at or above 42.5.
Described nano-material modified dose is boron doping graphene；In the boron doping graphene, the doping of boron is
1.5%。
The water-reducing agent is naphthalene sulfonate water-reducing agent；The early strength agent is calcium formate, and the swelling agent is ZY type
Swelling agent.
Aluminium content in the high purity aluminum powder is higher than 99.9%.
The aggregate is the fine sand that partial size is 1-3mm.
The preparation method of the nano material improvement cement-based material, comprising the following steps:
A, the portland cement for taking Bo Naite, nano-material modified dose and 3 times of weight of Bo Naite, is done repeatedly after mixing
Mill crosses 800 meshes, obtains admixed finepowder；
B, by remaining portland cement, water-reducing agent, early strength agent, swelling agent, latex powder, methylhydroxypropylcellulose ether and
Aggregate precise is placed in blender, is uniformly mixed；Admixed finepowder is added, continues to stir evenly；
C, it is passed through nitrogen in blender, excludes air, is then rapidly added high purity aluminum powder, continues to stir evenly, obtain
Cement base siccative；
D, the water of cement base siccative total weight 40% is added, is in the milk after mixing evenly.
Comparative example 1
By the Bo Naite removal in embodiment 1, remaining proportion and preparation method are constant.
Comparative example 2
By the boron doping graphene removal in embodiment 1, remaining proportion and preparation method are constant.
Comparative example 3
By the boron doping graphene removal in embodiment 1, the ratio of Bo Naite is promoted to 7.5%；Remaining proportion and preparation side
Method is constant.
Comparative example 4
Boron doping graphene in embodiment 1 is replaced with into boron-undoped graphene；Remaining proportion and preparation method are not
Become.
It is applied to height for the cement-based material sample of embodiment 1-3 and comparative example 1-4 as bridge bracket grouting material below
In fast highway, and coherent detection is carried out, obtains coherent detection data.
Table 1: the physical property detection data of bridge bracket grouting material；
| Setting time/min | Initial flow degree/mm | 1d compression strength/MPa | 3d compression strength/MPa | 28d compression strength/MPa | |
| Embodiment 1 | 157 | 341 | 29.5 | 52.8 | 81.5 |
| Embodiment 2 | 152 | 344 | 29.2 | 52.4 | 81.2 |
| Embodiment 3 | 155 | 347 | 29.4 | 52.3 | 81.3 |
| Comparative example 1 | 154 | 338 | 29.2 | 51.7 | 80.4 |
| Comparative example 2 | 157 | 340 | 29.5 | 52.7 | 81.7 |
| Comparative example 3 | 142 | 314 | 29.8 | 53.1 | 82.5 |
| Comparative example 4 | 157 | 341 | 29.4 | 52.8 | 81.5 |
By the above detection data it is recognised that cement-based material of the invention can satisfy the construction of bridge bracket grouting material
It is required that and intensity requirement.
Detection can be carried out to the anti-chloride ion permeability of cement-based material sample below, specific detection method is as follows: will
After the test block of cement-based material sample is impregnated 180 days in 3.5% sodium chloride solution, the Water soluble chloride ion of test block different depth
Concentration.
Table 2: the anti-chloride permeability performance detection data of cement-based material sample；
| 2mm | 5mm | 8mm | 11mm | 14mm | |
| Embodiment 1 | 0.127 | 0.058 | 0.015 | 0.001 | 0 |
| Embodiment 2 | 0.138 | 0.065 | 0.019 | 0.002 | 0 |
| Embodiment 3 | 0.129 | 0.059 | 0.015 | 0.001 | 0 |
| Comparative example 1 | 0.587 | 0.279 | 0.189 | 0.039 | 0.019 |
| Comparative example 2 | 0.348 | 0.212 | 0.088 | 0.025 | 0.013 |
| Comparative example 3 | 0.312 | 0.187 | 0.075 | 0.022 | 0.011 |
| Comparative example 4 | 0.287 | 0.153 | 0.062 | 0.019 | 0.009 |
By the above test data it is recognised that the boron doping graphene and Bo Naite that are added in the present invention have collaboration effect
Fruit, and boron doping graphene is well many than conventional graphene anti-chloride permeability effect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of nano material improves cement-based material, which is characterized in that by following weight percent at being grouped as:
Portland cement 35-50%
Bo Naite 1-2%
Nano-material modified dose of 0.02-0.05%
Water-reducing agent 0.5-0.8%
Early strength agent 0.2-0.5%
Swelling agent 2-4%
Latex powder 5-8%
High purity aluminum powder 0.2-0.5%
Methylhydroxypropylcellulose ether 0.1-0.2%
Aggregate surplus；
Described nano-material modified dose is boron doping graphene.
2. nano material as described in claim 1 improves cement-based material, which is characterized in that the portland cement is water
Mud strength grade is at or above 42.5 portland cement.
3. nano material as described in claim 1 improves cement-based material, which is characterized in that the boron doping graphene
In, the doping of boron is 1-1.5%.
4. nano material as described in claim 1 improves cement-based material, which is characterized in that the water-reducing agent is naphthalene sulfonic acids
Salt water-reducing agent；The early strength agent is calcium formate, and the swelling agent is ZY type swelling agent.
5. nano material as described in claim 1 improves cement-based material, which is characterized in that the aluminium in the high purity aluminum powder
Content is higher than 99.9%.
6. nano material as described in claim 1 improves cement-based material, which is characterized in that the aggregate is that partial size is 1-
The fine sand of 3mm.
7. the nano material as described in claim 1-6 is any improves cement-based material, which is characterized in that preparation method, packet
Include following steps:
A, the portland cement for taking Bo Naite, nano-material modified dose and Bo Naite 3-5 times weight, is done repeatedly after mixing
Mill crosses 800 meshes, obtains admixed finepowder；
B, by remaining portland cement, water-reducing agent, early strength agent, swelling agent, latex powder, methylhydroxypropylcellulose ether and aggregate
Precise is placed in blender, is uniformly mixed；Admixed finepowder is added, continues to stir evenly；
C, it is passed through nitrogen in blender, excludes air, is then rapidly added high purity aluminum powder, continues to stir evenly, obtain cement
Backbone material；
D, the water of cement base siccative total weight 20-40% is added, is in the milk after mixing evenly.
8. the nano material as described in claim 1-6 is any improves cement-based material, which is characterized in that nano material improvement
Cement-based material can be used as bridge bracket grouting material or repair materials are applied in highway.
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| CN110723918A (en) * | 2019-10-15 | 2020-01-24 | 沈阳大学 | Nano material for freeze-thaw resistant concrete and use method thereof |
| CN110563351B (en) * | 2019-10-16 | 2021-12-28 | 河海大学 | Cement-based material for improving chloride ion binding rate and preparation method thereof |
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| CN105294027B (en) * | 2015-12-04 | 2017-03-22 | 武汉理工大学 | Graphene oxide modified cement-based composite material and preparation method thereof |
| CN108424085B (en) * | 2018-05-02 | 2021-03-23 | 张翼航 | Preparation method of graphene oxide reinforced cement-based mortar material |
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