CN105859228B - A kind of composite strengthening alkali-activated slag mortar plate and preparation method thereof - Google Patents
A kind of composite strengthening alkali-activated slag mortar plate and preparation method thereof Download PDFInfo
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- CN105859228B CN105859228B CN201610180613.7A CN201610180613A CN105859228B CN 105859228 B CN105859228 B CN 105859228B CN 201610180613 A CN201610180613 A CN 201610180613A CN 105859228 B CN105859228 B CN 105859228B
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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
- C04B28/08—Slag cements
- C04B28/082—Steelmaking slags; Converter slags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of composite strengthening alkali-activated slag mortar plate and preparation method thereof, the plate is collectively constituted by continuous carbon fibre fabric and chopped strand composite reinforcing material with alkali-activated slag mortar：Wherein continuous carbon fibre fabric and chopped strand are reinforcing material, and the alkali-activated slag mortar filled between fabric/fiber is basis material.The preparation method of composite strengthening alkali-activated slag mortar plate of the present invention is simple, and normal temperature and pressure maintenance preparation process of the use without heating pressurization, specific energy consumption is low and three-waste free discharge, is a kind of green preparation process.According to the bending property of composite strengthening alkali-activated slag mortar plate made from method made above is excellent, impact resistance, freezing-thawing resistance are stronger.
Description
Technical field
The invention belongs to building material technology (construction material structure) field, it is related to a kind of engineered fabrics/fiber composite
Reinforcing plate, is specifically a kind of composite strengthening alkali-activated slag mortar plate, available for Side fascia or battenboard etc..
Background technology
One of the pillar industry of construction industry as Chinese national economy, is developed rapidly in recent ten years, huge
Market is growing day by day to the demand of construction material.Non-bearing exterior wall hanging plate is a kind of new-type construction material, because its is pre-formed, matter
The characteristics of gently wall is thin, can not only coordinate cast-in-place concrete frame structure, Construction of Steel Structure, can also coordinate precast concrete frame
Frame structure construction, had not only reduced construction technology but also had reduced on-site construction processes, and beauty is also equipped with when coordinating exterior trim materials'use
Characteristic, it is more mature in state's research and development applications such as France, Germany, Australia, Japan.Rise in the non-bearing exterior wall hanging plate market in China
Walk later, use the conventional panels such as glass curtain wall, portland cement board mostly.Glass curtain wall has light pollution, stress collection
The shortcomings of easily bursting when middle.Cement industry is then typical high pollution high energy-consuming industry, and often producing 1 ton of portland cement need to be to big
Gas discharges 0.8 ton or so of carbon dioxide, two mill one firing technique consumption mass energies, while also results in noise and dust dirt
Dye.Therefore, the research and development plug-in plate of new green environment protection has environmental-friendly and sustainable development social demand.Alkali-activated slag
It is that ground blast furnace slag powder excites to form a kind of alkali-activated material of gelling ability through alkali-activator, due in same or like bar
Its mechanical property, endurance quality are equivalent under part or just receive larger concern better than portland cement, since the advent of the world.Alkali swashs
Hair slag mortar is collectively constituted by ground granulated blast-furnace slag powder, alkali-activator, Sha Heshui, in addition can also mix fine coal again
Ash, metakaolin etc., unit carbon dioxide discharge and energy expenditure are less than silicate cement cement mortar in production process, are a kind of green
Color environmental-friendly construction material.Therefore, alkali-activated slag mortar is a kind of more satisfactory silicate cement cement mortar substitute.
To make the plug-in plate of portland cement obtain preferable bending property, toughness and anti-cracking performance, when manufacture, is usual
The materials such as reinforcing bar or chopped strand can be used to its toughness reinforcing.However, during using reinforcing bar as reinforcing material, construct complex tired
Difficulty, and there are the danger of corrosion for reinforcing bar.During using chopped strand as reinforcing material, because of its random distribution in the base, by force
Degree cannot give full play to, it is necessary to which large dosage uses.In addition, the puzzlement and again of fibrous caking can be subject in preparation and construction casting
The low-fiber enhancing effect for being uniformly distributed at random, weakening chopped strand, drops in the influence of stress effect, boundary effect.It is continuous fine
Dimensional fabric enhancing is a kind of efficient enhancing technology, continuous-filament woven fabric be continuous fiber rove is made into using knitting skill it is flat
Face or three-dimensional yarn fabric, because it can be arranged along the principal stress direction in matrix, its enhancing efficiency has larger relative to chopped strand
Improve；Again because of its corrosion resistant characteristic, the protective layer thickness of matrix can be very thin, beneficial to the structure for building light thin-wall.However,
Continuous-filament woven fabric strengthens plate there is also some shortcomings, is concentrated mainly on adhesive property of fabric and matrix etc..When knitting
When the cementitiousness of thing and matrix is deteriorated, the fabric phenomenon that unsticking is peeled off from matrix occurs in when plate stress, significantly
Reduce bearing capacity.Using continuous-filament woven fabric as enhancing main body, it is a kind of novel toughening technology to mix suitable chopped strand again,
When unsticking stripping occur in fabric and matrix, the chopped strand of incorporation can still transmit stress, limit the development in crack, mitigate because
Fabric unsticking is negatively affected caused by the bending property of plate.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of high-flexural strength, high tenacity, non-breakable, impact-resistant
Composite strengthening alkali-activated slag mortar plate and preparation method thereof, the Mortar Plates by continuous carbon fibre fabric, chopped strand and
Alkali-activated slag mortar collectively constitutes, and wherein continuous carbon fibre fabric and chopped strand are reinforcing material, fabric and fiber it
Between the alkali-activated slag mortar filled be basis material.Invention component composition is simple, and technique is more simple, the mechanical property of plate
It is excellent.
Technical solution：A kind of composite strengthening alkali-activated slag mortar plate of the present invention is to be achieved through the following technical solutions
's：
The slag Mortar Plates are combined into reinforcing material and alkali-activated slag sand by continuous carbon fibre fabric and chopped strand
Slurry is formed：Wherein continuous carbon fibre fabric and chopped strand are reinforcing material, and alkali-activated slag mortar is basis material, are formed
Composite strengthening alkali-activated slag mortar plate.
The continuous carbon fibre fabric, which is built in alkali-activated slag mortar, plays humidification, the continuous carbon fibre
The non-surface treated of fabric directly uses, or is used after epoxy resin-impregnated；The tensile strength of continuous carbon fibre fabric is more than
2500MPa, elasticity modulus are more than 200GPa, and elongation is more than 1.5%；Required according to properties of product, it is 1~5 that it, which is laid with the number of plies,
Layer, each interlamellar spacing are no more than 20mm, and protective layer thickness is not less than 5mm.
The chopped strand be in order to restriction plate by it is curved when crack extended, increase its toughness；Chopped strand is low bullet
Property modulus organic fiber, be polypropylene fibre or polyvinyl chloride fibre, the length of fiber is fine in the range of 0.6mm-1.5mm
Diameter is tieed up in 5 μm~200 μ ms；Required according to properties of product, fiber volume fraction is adjusted in the range of 0.5%~2.0%
It is whole.
The alkali-activated slag mortar is collectively constituted by cementitious material, alkali-activator, Sha Heshui.
In the alkali-activated slag mortar, cementitious material is ground granulated blast-furnace slag powder, or high with levigate granulation
Based on stove slag powders, metakaolin or nano material are individually mixed again, or mix both the above material again；Ground granulated blast-furnace slag powder
More than the 60% of cementitious material mass fraction is accounted for, metakaolin volume is no more than the 40% of cementitious material mass fraction, nanometer material
Expect that volume is no more than the 1% of cementitious material mass fraction；The grade of ground granulated blast-furnace slag powder should be not less than S95 grades, compare table
Area is more than 400m2/kg；The specific surface area of metakaolin is more than 1000m2/kg；Nano material is nano-titanium dioxide, or is received
Rice silica, grain diameter are not more than 100nm.
In the alkali-activated slag mortar, alkali-activator is collectively constituted by waterglass and sodium hydroxide, in alkali-activator
The mass fraction that sodium oxide molybdena accounts for cementitious material in alkali content, i.e. alkali-activator is 3.0%~6.0%, in modulus, i.e. alkali-activator
The ratio between amount of substance of silica and sodium oxide molybdena is 0.5~2.0.
The sand of the alkali-activated slag mortar is river sand, or quartz sand, the maximum particle diameter of sand are not more than 1.18mm.
In the match ratio of alkali-activated slag mortar, mass ratio, that is, water-cement ratio of water and cementitious material 0.35~0.55 it
Between, mass ratio, that is, gelatine ratio of sand and cementitious material is according to properties of product between 1.5~3.0.
The thickness of the composite strengthening alkali-activated slag mortar plate is in the range of 20~50mm.
The preparation method of the composite strengthening alkali-activated slag mortar plate of the present invention comprises the steps of：
The first step：Required according to properties of product, select the number of plies, spacing, protective layer thickness of continuous carbon fibre fabric, be chopped
The species of fiber, length, diameter, the thickness of volume fraction and plate；
Second step：The parameter selected according to the first step, continuous carbon fibre fabric is fixed in a mold and to every layer of fabric
Apply some tension to keep formation state；
3rd step：Required according to properties of product, select suitable alkali-activated slag mortar Stock allotment right；
4th：The alkali-activated slag mortar Stock allotment right selected according to the 3rd step, by the cementitious material of precise
First it is uniformly mixed with sand, then the alkali-activator and water with preparation are mixed together, and are eventually adding chopped strand and are uniformly mixed, and are made
Fiber reinforcement alkali-activated slag mortar；
5th step：Alkali-activated slag mortar prepared by the 4th step is poured into the fixed continuous carbon fibre of second step preparation
In the mould of fabric, when maintenance 24 is small in 20 DEG C~25 DEG C environment, four sides of plate are polished flat with sander after the demoulding
It is whole, continue maintenance in identical environment to 14 day age, you can the composite strengthening alkali-activated slag mortar plate is made.
Beneficial effect：The present invention has the following advantages that compared with prior art and good effect：
Composite strengthening alkali-activated slag mortar plate of the present invention and reinforced concrete base Mortar Plates or fibre reinforced cement base mortar
Plate is compared, and has the characteristics that environmentally protective, light mass and thin wall, and cementitious material used is mainly industrial residue so that industrial solid gives up
Gurry obtains rationally and effectively recycling, and without considering the corrosion of reinforcing bar or the dispersion performance of fiber, plate can be very thin；Even
Continuous carbon fibre fabric is inorganic fibre fabric, excellent performance, and raw material is easily obtained, is easy to produce, will not be produced in manufacturing process
Toxic and harmful gas, environmental pollution are small；Chopped strand production technology is ripe.
The preparation method of composite strengthening alkali-activated slag mortar plate of the present invention is simple, and use is normal without the room temperature for heating pressurization
Pressure maintenance preparation process, specific energy consumption is low and three-waste free discharge, is a kind of green preparation process.
The excellent performance of composite strengthening alkali-activated slag mortar plate of the present invention, linear bending strength reach more than 8.0MPa,
Ultimate bending strength reaches more than 20.0MPa, and impact strength is more than 9.0kJ/m3, water absorption rate be less than 10.0%, 25 can be born
Secondary above Frozen-thawed cycled.It may be noted that country there is no fabric/fiber composite reinforced slab standard and alkali-activated slag mortar mark at present
Standard, performance indicator of the invention according to《Glass fiber reinforced cement Side fascia》(JC/T 1057-2007) is detected.The present invention is multiple
The performance indicator for closing enhancing alkali-activated slag mortar plate complies fully with《Glass fiber reinforced cement Side fascia》(JC/T 1057-
2007) relevant technical requirements in.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the schematic diagram of composite strengthening alkali-activated slag mortar plate.
Wherein have：Continuous carbon fibre fabric 1, chopped strand 2, alkali-activated slag mortar 3, the layer of continuous carbon fibre fabric
Number, spacing and upper and lower protective layer thickness are adjustable, and the species of chopped strand, physical dimension and volume fraction are adjustable.
Embodiment
A kind of composite strengthening alkali-activated slag mortar plate, it is characterised in that the plate is by continuous carbon fibre fabric 1, be chopped fibre
Dimension 2 and alkali-activated slag mortar collectively constitute：Wherein continuous carbon fibre fabric and chopped strand are reinforcing material, in fiber with knitting
The alkali-activated slag mortar 3 filled between thing is basis material.
Continuous carbon fibre fabric, which is built in alkali-activated slag mortar, plays humidification.The continuous carbon fibre fabric
Can non-surface treated directly use, can also be used after epoxy resin-impregnated, the tensile strength of continuous carbon fibre fabric is big
In 2500MPa, elasticity modulus is more than 200GPa, and elongation is more than 1.5%.Required according to properties of product, its be laid with number of plies for 1~
5 layers, each interlamellar spacing 0mm~20mm, upper and lower protective layer thickness is not less than 5mm.
The chopped strand is the organic fiber of low elastic modulus, can be polypropylene fibre or polyvinyl chloride fibre, root
Required according to properties of product, the length of fiber is in the range of 0.6mm-1.5mm, and fibre diameter is in 5 μm~200 μ ms, volume
Fraction adjusts in the range of 0.5%~2.0%.
The alkali-activated slag mortar is made by following components：
1. cementitious material can be ground granulated blast-furnace slag powder or using ground granulated blast-furnace slag powder as
It is main, metakaolin or nano material are mixed again.Ground granulated blast-furnace slag powder accounts for the 60%~100% of cementitious material mass fraction,
Metakaolin volume is no more than the 40% of cementitious material mass fraction, and nano material volume is no more than cementitious material mass fraction
1%.The grade of ground granulated blast-furnace slag powder should be not less than S95 grades, and specific surface area is more than 400m2/kg；The ratio table of metakaolin
Area is more than 1000m2/kg；Nano material can be nano-titanium dioxide or nano silicon dioxide, and grain diameter is not
More than 100nm；
2. alkali-activator is collectively constituted by waterglass and sodium hydroxide, alkali content (aoxidizes in alkali-activator in alkali-activator
Sodium accounts for the mass fraction of cementitious material) it is 3.0%~6.0%, the modulus (amount of substance of silica and sodium oxide molybdena in alkali-activator
The ratio between) it is 0.5~2.0；
3. sand can be river sand or quartz sand, the maximum particle diameter of sand is not more than 1.18mm；
4. in alkali-activated slag mortar match ratio, the mass ratio (water-cement ratio) and sand of water and cementitious material and cementitious material
Mass ratio (gelatine ratio) can be adjusted according to properties of product between 0.35~0.55 and between 1.5~3.0.
The thickness of the composite strengthening alkali-activated slag mortar plate is in the range of 20~50mm.
The preparation method comprises the steps of：
The first step：Required according to properties of product, select the number of plies, up and down spacing, the protection of suitable continuous carbon fibre fabric
Layer thickness, the species of chopped strand, physical dimension, the thickness of volume fraction and plate；
Second step：The parameter selected according to the first step, continuous carbon fibre fabric is fixed in suitable mould and to every
Layer fabric applies some tension to keep formation state；
3rd step：Required according to properties of product, select suitable alkali-activated slag mortar Stock allotment right, such as：Be gelled material
Expect species, the alkali content and modulus, water-cement ratio, gelatine ratio etc. of alkali-activator；
4th：The alkali-activated slag mortar Stock allotment right selected according to the 3rd step, by the cementitious material of precise
First it is uniformly mixed with sand, then the alkali-activator and water with preparation are mixed together, and are eventually adding chopped strand and are uniformly mixed, and are made
Fiber reinforcement alkali-activated slag mortar；
5th step：Alkali-activated slag mortar prepared by the 4th step is poured into the fixed continuous carbon fibre of second step preparation
In the mould of fabric, when maintenance 24 is small in 20 DEG C~25 DEG C environment, four sides of plate are polished flat with sander after the demoulding
It is whole, continue maintenance in identical environment to 14 day age, you can the composite strengthening alkali-activated slag mortar plate is made.
Embodiment one
Composite strengthening alkali-activated slag mortar plate, its composition are as follows：
1. reinforcing material is continuous carbon fibre fabric and chopped polypropylene fibre.The tensile strength of continuous carbon fibre fabric is
3200MPa, elasticity modulus 215GPa, elongation 2.0%, it is 2 layers to be laid with the number of plies, interlamellar spacing 10mm, and upper lower protective layer is thick
Spend for 10mm；The length of polypropylene fibre of being chopped is 12mm, a diameter of 25 μm, volume fraction 1.0%；
2. the thickness of plate is 20mm；
3. the cementitious material in alkali-activated slag mortar is made of S95 grades of ground granulated blast-furnace slag powder, levigate granulation is high
Stove slag powder content accounts for cementitious material quality 100%；
4. the alkali-activator in alkali-activated slag mortar is waterglass and sodium hydroxide, alkali content is in alkali-activator
5.0%, modulus 1.5；
5. the water-cement ratio of alkali-activated slag mortar is 0.4, gelatine ratio is 1.5: 1；
The related performance indicators of composite strengthening alkali-activated slag mortar plate are as follows as made of matching the present embodiment：
28 days bending strengths：Bending resistance proportional limit intensity 9.0MPa, beaming resistance limit intensity 22.4MPa；
Impact strength：9.8kJ/m3；
Water absorption rate：7.3%；
Bear freezing-thawing cycles：92 times.
Embodiment two
Composite strengthening alkali-activated slag mortar plate, its composition are as follows：
1. reinforcing material is continuous carbon fibre fabric and chopped polypropylene fibre.The tensile strength of continuous carbon fibre fabric is
3100MPa, elasticity modulus 210GPa, elongation 2.0%, it is 3 layers, interlamellar spacing 5mm to be laid with the number of plies, upper and lower protective layer thickness
For 10mm；The length of polypropylene fibre of being chopped is 8mm, a diameter of 25 μm, volume fraction 1.5%；
2. the thickness of plate is 35mm；
3. the cementitious material in alkali-activated slag mortar is by S95 grades of ground granulated blast-furnace slag powder and common group of metakaolin
Into ground granulated blast-furnace slag powder content accounts for cementitious material quality 90%, and metakaolin accounts for cementitious material quality 10%；
4. the alkali-activator in alkali-activated slag mortar is waterglass and sodium hydroxide, alkali content is in alkali-activator
4.5%, modulus 1.5；
5. the water-cement ratio of alkali-activated slag mortar is 0.36, gelatine ratio is 2.0: 1.
The related performance indicators of composite strengthening alkali-activated slag mortar plate are as follows as made of matching the present embodiment：
28 days bending strengths：Bending resistance proportional limit intensity 9.7MPa, beaming resistance limit intensity 22.6MPa；
Impact strength：10.2kJ/m3；
Water absorption rate：8.7%；
Bear freezing-thawing cycles：107 times.
Embodiment three
Composite strengthening alkali-activated slag mortar plate, its composition are as follows：
1. reinforcing material is continuous carbon fibre fabric and chopped polypropylene fibre.The tensile strength of continuous carbon fibre fabric is
3000MPa, elasticity modulus 210GPa, elongation 2.0%, it is 4 layers to be laid with the number of plies, interlamellar spacing 10mm, and upper lower protective layer is thick
Spend for 5mm；The length of polypropylene fibre of being chopped is 12mm, a diameter of 25 μm, volume fraction 2.0%；
2. plate thickness is 50mm；
3. the cementitious material in alkali-activated slag mortar is total to by S95 grades of ground granulated blast-furnace slag powder and nano-titanium dioxide
With composition, ground granulated blast-furnace slag powder content accounts for cementitious material quality 99.25%, and nano-titanium dioxide accounts for cementitious material quality
0.75%；
4. the alkali-activator in alkali-activated slag mortar is waterglass and sodium hydroxide, alkali content is in alkali-activator
4.0%, modulus 1.0；
5. the water-cement ratio of alkali-activated slag mortar is 0.45, gelatine ratio is 2.5: 1.
The related performance indicators of composite strengthening alkali-activated slag mortar plate are as follows as made of matching the present embodiment：
28 days bending strengths：Bending resistance proportional limit intensity 13.6MPa, beaming resistance limit intensity 28.3MPa；
Impact strength：13.3kJ/m3；
Water absorption rate：6.8%；
Bear freezing-thawing cycles：110 times.
Example IV
Composite strengthening alkali-activated slag mortar plate, its composition are as follows：
1. the tensile strength of continuous carbon fibre fabric is 3200MPa, elasticity modulus 215GPa, elongation 2.0%, it is laid with
The number of plies is 5 layers, interlamellar spacing 5mm, and upper and lower protective layer thickness is 10mm；The length of polyvinyl chloride fibre of being chopped is 12mm, diameter
For 35 μm, volume fraction 1.0%；
2. plate thickness is 45mm；
3. the cementitious material in alkali-activated slag mortar is by S95 grades of ground granulated blast-furnace slag powder, metakaolin and nanometer
Silica collectively constitutes, and ground granulated blast-furnace slag powder content accounts for cementitious material quality 89.5%, and metakaolin accounts for gelling material
Expect quality 10.0%, nano silicon dioxide accounts for cementitious material quality 0.5%；
4. the alkali-activator in alkali-activated slag mortar is waterglass and sodium hydroxide, alkali content is in alkali-activator
5.0%, modulus 2.0；
5. the water-cement ratio of alkali-activated slag mortar is 0.35；Gelatine ratio is 3: 1.
The related performance indicators of composite strengthening alkali-activated slag mortar plate are as follows as made of matching the present embodiment：
28 days bending strengths：Bending resistance proportional limit intensity 12.1MPa, beaming resistance limit intensity 33.7MPa；
Impact strength：12.3kJ/m3；
Water absorption rate：5.9%；
Bear freezing-thawing cycles：97 times.
Composite strengthening alkali-activated slag mortar plate is made according to the preparation method of the foregoing description in above-mentioned four embodiments.
Above-mentioned four embodiments be all according to《Glass fiber reinforced cement Side fascia》In (JC/T 1057-2007) standard
Prescriptive procedure is tested.
The indices of composite strengthening alkali-activated slag mortar plate are met or exceeded in above-mentioned four embodiments《Glass fibers
Dimension enhancing cement Side fascia》Indices requirement in (JC/T 1057-2007), illustrates the flexing resistance of alkali-activated slag mortar
Can be excellent, limit anti-bending strength, shock resistance and the freezing and thawing performance of composite strengthening alkali-activated slag mortar plate obtain significantly
Lifting, enhancing effect are extremely notable.
Certainly, described above is not the limitation to invention, and the present invention is also not limited to the example above, the art
Those of ordinary skill, the variations, modifications, additions or substitutions made in the essential scope of the present invention, should also belong to the present invention's
Protection domain.
Claims (7)
1. a kind of composite strengthening alkali-activated slag mortar plate, it is characterised in that the slag Mortar Plates are by continuous carbon fibre fabric
(1) it is combined into reinforcing material with chopped strand (2) and is formed with alkali-activated slag mortar (3)：Wherein continuous carbon fibre fabric (1)
It is reinforcing material with chopped strand (2), alkali-activated slag mortar (3) is basis material, forms composite strengthening alkali-activated slag sand
Pulpboard；
The continuous carbon fibre fabric (1), which is built in alkali-activated slag mortar, plays humidification, the continuous carbon fibre
The non-surface treated of fabric directly uses, or is used after epoxy resin-impregnated；The tensile strength of continuous carbon fibre fabric is more than
2500MPa, elasticity modulus are more than 200GPa, and elongation is more than 1.5%；Required according to properties of product, it is 1~5 that it, which is laid with the number of plies,
Layer, each interlamellar spacing are no more than 20mm, and protective layer thickness is not less than 5mm；
The chopped strand (2) be in order to restriction plate by it is curved when crack extended, increase its toughness；Chopped strand is low elasticity
The organic fiber of modulus, is polypropylene fibre or polyvinyl chloride fibre, the length of fiber is in the range of 0.6mm-1.5mm, fiber
Diameter is in 5 μm~200 μ ms；Required according to properties of product, fiber volume fraction adjusts in the range of 0.5%~2.0%；
The alkali-activated slag mortar (3) is collectively constituted by cementitious material, alkali-activator, Sha Heshui.
2. composite strengthening alkali-activated slag mortar plate described in accordance with the claim 1, it is characterised in that：The alkali-activated slag
In mortar, cementitious material is ground granulated blast-furnace slag powder, or based on ground granulated blast-furnace slag powder, is individually mixed again higher
Ridge soil or nano material, or both the above material is mixed again；Ground granulated blast-furnace slag powder accounts for the 60% of cementitious material mass fraction
More than, metakaolin volume is no more than the 40% of cementitious material mass fraction, and nano material volume is no more than cementitious material quality
The 1% of fraction；The grade of ground granulated blast-furnace slag powder should be not less than S95 grades, and specific surface area is more than 400m2/kg；Metakaolin
Specific surface area be more than 1000m2/kg；Nano material is nano-titanium dioxide, or nano silicon dioxide, grain diameter are little
In 100nm.
3. composite strengthening alkali-activated slag mortar plate described in accordance with the claim 1, it is characterised in that：The alkali-activated slag
In mortar, alkali-activator is collectively constituted by waterglass and sodium hydroxide, sodium oxide molybdena in alkali content in alkali-activator, i.e. alkali-activator
The mass fraction for accounting for cementitious material is 3.0%~6.0%, the amount of substance of silica and sodium oxide molybdena in modulus, i.e. alkali-activator
The ratio between be 0.5~2.0.
4. composite strengthening alkali-activated slag mortar plate described in accordance with the claim 1, it is characterised in that：The alkali-activated slag
The sand of mortar is river sand, or quartz sand, the maximum particle diameter of sand are not more than 1.18mm.
5. composite strengthening alkali-activated slag mortar plate described in accordance with the claim 1, it is characterised in that：Alkali-activated slag mortar
In match ratio, between 0.35~0.55, the mass ratio of sand and cementitious material is mass ratio, that is, water-cement ratio of water and cementitious material
Gelatine ratio is according to properties of product between 1.5~3.0.
6. composite strengthening alkali-activated slag mortar plate described in accordance with the claim 1, it is characterised in that：The composite strengthening alkali swashs
The thickness of slag Mortar Plates is sent out in the range of 20~50mm.
7. a kind of preparation method of composite strengthening alkali-activated slag mortar plate as described in claim 1,2,3,4,5 or 6, its
It is characterized in that the preparation method comprises the steps of：
The first step：Required according to properties of product, select the number of plies, spacing, protective layer thickness of continuous carbon fibre fabric, chopped strand
Species, length, diameter, the thickness of volume fraction and plate；
Second step：The parameter selected according to the first step, continuous carbon fibre fabric is fixed in a mold and every layer of fabric is applied
Some tension is to keep formation state；
3rd step：Required according to properties of product, select suitable alkali-activated slag mortar Stock allotment right；
4th：The alkali-activated slag mortar Stock allotment right selected according to the 3rd step, by the cementitious material and sand of precise
First it is uniformly mixed, then the alkali-activator and water with preparation are mixed together, and are eventually adding chopped strand and are uniformly mixed, and fiber is made
Strengthen alkali-activated slag mortar；
5th step：Alkali-activated slag mortar prepared by the 4th step is poured into the fixed continuous carbon fibre fabric of second step preparation
Mould in, in 20 DEG C~25 DEG C environment conserve 24 it is small when, four sides of plate are polished flat with sander after the demoulding,
Continue maintenance in identical environment to 14 day age, you can the composite strengthening alkali-activated slag mortar plate is made.
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| CN106747227A (en) * | 2017-01-17 | 2017-05-31 | 哈尔滨理工大学 | Assorted fibre enhancing alkali--activated slag cement and preparation method thereof |
| CN108147743A (en) * | 2017-12-28 | 2018-06-12 | 湖南大学 | A kind of self-compaction glass decoration method for preparing mortar sterilized |
| CN108193768A (en) * | 2018-01-11 | 2018-06-22 | 华南理工大学 | A kind of construction floor lightweight vibration insulation structure and preparation method thereof |
| CN109081643B (en) * | 2018-09-18 | 2021-02-02 | 广州大学 | Carbon fiber/alkali-activated composite pressure-sensitive material and preparation method thereof |
| CN112388801A (en) * | 2020-10-26 | 2021-02-23 | 北京马普新材料有限公司 | Composite slurry composition, composite slurry and composite sandwich panel |
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