CN109020421A - A kind of composite fibre fast repairing material and preparation method thereof - Google Patents

A kind of composite fibre fast repairing material and preparation method thereof Download PDF

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Publication number
CN109020421A
CN109020421A CN201811030005.3A CN201811030005A CN109020421A CN 109020421 A CN109020421 A CN 109020421A CN 201811030005 A CN201811030005 A CN 201811030005A CN 109020421 A CN109020421 A CN 109020421A
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fiber
water
inorganic long
composite fibre
short fiber
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佘伟
张云升
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Southeast University
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Southeast University
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/06Aluminous cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/023Chemical treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a kind of composite fibre fast repairing material and preparation method thereof, organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=0.9~1.1:2.0~2.5:100:0.5~1:0.03~0.05;Preparation method is as follows: 1) weighing each component and water according to mass ratio;2) water-reducing agent is soluble in water that aqueous solution, aqueous 1/3~1/2 are mixed with low alkali sulphate aluminium cement, it persistently stirs 30s~45s and obtains mortar;3) organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution are added into mortar, stirs 30s~45s.Organic staple fibers peacekeeping inorganic long fiber passes through organic solvent and pure-acrylic emulsion surface modification treatment.The fast repairing material overcomes the features such as ordinary cement patching material strength development is slow, flexural strength is low, contraction is big, is highly suitable for the Rapid-Repair of road surface.

Description

A kind of composite fibre fast repairing material and preparation method thereof
Technical field
The invention patent relates to a kind of composite fibre fast repairing materials and preparation method thereof, belong to civil engineering material neck Domain.
Background technique
In China, cement concrete pavement is one of primary structure form of high grade pavement, and main advantage is: being held Loading capability is strong, high-temperature stability is strong, fatigue life is long, long service life, material source are extensive etc..But cement concrete pavement Itself brittleness is larger, and engineering in practice, part raw material are unqualified, design with conserve it is not in place etc. due to, cement Often there is different degrees of destruction in concrete road surface, this can greatly influence comfortableness and security when driving, if too late When repair, it is also possible to satisfy the need base band to damage, in addition blocking entire road.
It is that its hydration time is long using the problem of more Cement Concrete Pavement Reconstruction material at present, generally requires 5 It can just come into operation after to 7 days, it is difficult to meet the needs of transport hubs such as current highway, urban road;Furthermore it is required that Patching material mechanical strength is high, durability is good, i.e., flexural strength, bond strength and toughness with higher, lower shrinking percentage Deng.
Sulphate aluminium cement has the characteristics that strength development is fast, volume microdilatancy, low alkalinity after hydration reaction, is very suitable to As fast repairing material, while also having the shortcomings that cement concrete bending strength is low, toughness is low etc.;And it is a certain amount of mixing After fiber, the flexural strength and toughness of cement concrete can be improved significantly.Current most widely used steel fiber reinforced concrete Although can meet the requirements in intensity and toughness, steel fibre easily gets rusty if dealing with improperly, and repairs in road surface In also to vehicle tyre, there are security risks.And high-intensitive, high elastic modulus inorganic long fiber, such as alkali-resistant glass fibre, then There is no getting rusty, traffic safety will not be influenced, be highly suitable as sulphate aluminium cement repairing when in mix fiber.
Fast repairing material requires to come into operation as early as possible after repairing, it means that its maintenance for being difficult to realize standard Condition, patching material surface is easy to generate drying because moisture evaporates and shrink at this time, or even cracking, seriously affects repairing effect Fruit;And organic short fiber can be fine in the appearance of aquation early stage inhibition dry shrinkage fracture, such as polypropylene fibre, polyvinyl alcohol Dimension, Peroxyacetyl nitrate fiber etc.;Organic fiber in fast repairing material disorderly to be distribution, can be to its early-age shrinkage Play the role of certain restrictions, patching material early-age shrinkage is made to decrease, thereby reduces the risk for early-age crack occur.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of composite fibre fast repairing materials and preparation method thereof, this is multiple Condensating fiber fast repairing material has fast microdilatancy, strength development, High anti bending strength, is not easy the advantages such as early-age crack, and it is made Preparation Method simple process is suitble to large-scale production and application.
Technical solution: the present invention provides a kind of composite fibre fast repairing materials, and the patching material is according to mass ratio packet Containing following components:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=0.9~1.1:2.0~ 2.5:100:0.5~1:0.03~0.05.
Wherein:
The organic short fiber is polypropylene fibre, vinal or Peroxyacetyl nitrate fiber, length It is 0.05mm~0.1mm for 2mm~6mm, diameter, elasticity modulus is not higher than 5GPa.
The inorganic long fiber is alkali-resistant glass fibre or carbon fiber, and the length is 6mm~15mm, filament diameters to be 7 μm~12 μm, elasticity modulus be higher than 70GPa.
The low alkali sulphate aluminium cement is 42.5 grades of low alkali sulphate aluminium cements, and cubical expansivity is greater than within 28 days 1%.
The water-reducing agent is polycarboxylate water-reducer, and solid content is 40%~50%, and water-reducing rate is 35%~36%;Institute The defoaming agent stated is polyether-type defoaming agent, is combined by modified silicon polyethers with modified siloxane, and pH value is 6.5~8.5.
The organic short fiber and inorganic long fiber is successively to carry out surface through organic solvent and pure-acrylic emulsion to be modified Treated is modified organic short fiber and modified inorganic long fibre.
The organic solvent is ethyl alcohol or acetone;The pure-acrylic emulsion is methyl acrylic ester, acrylate Class and acrylic acid ternary polymerization lotion, and the also acrylonitrile containing 0.2wt%~0.3wt%, 0.15wt% in the pure-acrylic emulsion The melamine of the propylene peptamine of~0.2wt%, 0.1wt%~0.14wt%.
The present invention also provides a kind of preparation method of composite fibre fast repairing material, which includes following step It is rapid:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are claimed according to mass ratio It measures spare, and weighs water according to mass ratio 100:32~38 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/3~1/2 and low alkali aluminium sulfate water Mud mixing persistently stirs 30s~45s and obtains mortar;
3) load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution are added into mortar, stirs The composite fibre fast repairing material can be obtained in 30s~45s.
Wherein:
The frequency of stirring described in step 2) and step 3) is 60r/min~80r/min.
Since fast hydraulic cement aquation is very fast, the sum of time used in step 2) and step 3) is less than 90s.
The organic short fiber, inorganic long fiber be successively through organic solvent and pure-acrylic emulsion carry out surface it is modified at Modification organic short fiber, modified inorganic long fibre after reason, modification procedure are as follows:
Organic short fiber or inorganic long fiber are impregnated in organic solvent first and use supersonic cleaning machine by step 1 3~5min is shaken, fiber surface organic solvent is washed away again later and is dried at 40 DEG C~60 DEG C;
The organic short fiber of drying or inorganic long fiber are immersed in 3~5min in pure-acrylic emulsion by step 2 again, it It takes out and dries at room temperature afterwards and obtain modified organic short fiber or modified inorganic long fibre.
The utility model has the advantages that compared with prior art, present invention has the advantage that
1, composite fibre fast repairing material workability provided by the invention is good, light weight, strength development rapidly, at Product intensity is reliable, has the potentiality of the infrastructure such as Rapid-Repair road, bridge, tunnel;
2, the present invention uses the low alkali sulphate aluminium cement of microdilatancy, and effective compensation aquation, moisture evaporation are too fast etc. makes At shrinkage cracking, greatly reduce repair materials volume stability risk;Using organic short fiber, inorganic long fiber is compound takes Match, fresh paste workability can be improved, improves construction efficiency, while enhancing repair materials and system cracking resistance risk ability, The Rapid-Repair for being very suitable to the application scenarios such as road, bridge tunnel uses;
3, composite fibre fast repairing material preparation method simple process provided by the invention, suitable large-scale production are answered With.
Specific embodiment
The present invention is further elaborated below with reference to embodiment.
Embodiment 1:
A kind of composite fibre fast repairing material includes following components according to mass ratio:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=0.9:2.5:100: 0.7:0.05.
Organic short fiber selects vinal, density 1.3g/cm3, length 3mm, diameter 0.05mm, bullet Property modulus be 4.7GPa, and it successively passes through acetone and pure-acrylic emulsion and carries out surface modification treatment;
Inorganic long fiber selects alkali-resistant glass fibre, is 7 μm the length is 6mm, filament diameter, elasticity modulus 80GPa, It successively passes through acetone and pure-acrylic emulsion carries out surface modification treatment;
Low alkali sulphate aluminium cement selects fast 42.5 grades of gravity die low alkali sulphate aluminium cements, and cubical expansivity is greater than within 28 days 1%;
Water-reducing agent selects high-efficiency polycarboxylic acid water reducer, solid content 40%, water-reducing rate 35%;
Defoaming agent selects polyether-type defoaming agent, is combined by modified silicon polyethers with modified siloxane, pH value 8.
A kind of preparation method of composite fibre fast repairing material, the preparation method the following steps are included:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are claimed according to mass ratio It measures spare, and weighs water according to the mass ratio 100:38 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/3 and low alkali sulphate aluminium cement are mixed It closes and is added in blender, persistently stir 30s under the conditions of stirring frequency is 60r/min and obtain mortar;
3) load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution solution are added into mortar, The composite fibre fast repairing material can be obtained in stirring 30s under the conditions of stirring frequency is 60r/min.
Wherein:
The organic short fiber, inorganic long fiber are successively after acetone and pure-acrylic emulsion carry out surface modification treatment Modification organic short fiber, modified inorganic long fibre, modification procedure is as follows:
Organic short fiber or inorganic long fiber are impregnated shaken in acetone and using supersonic cleaning machine first by step 1 Fiber surface organic solvent is washed away again later and is dried at 40 DEG C by 3min;
The organic short fiber of drying or inorganic long fiber are immersed in 3min in pure-acrylic emulsion, Zhi Houqu by step 2 again It dries out and at room temperature and obtains modified organic short fiber or modified inorganic long fibre.
The pure-acrylic emulsion is the ternary copolymer emulsion of methyl acrylic ester, esters of acrylic acid, acrylic acid, pure C cream The also melamine of the acrylonitrile containing 0.2wt%, the propylene peptamine of 0.15wt%, 0.1wt% in liquid.
Finally obtained composite fibre fast repairing material is detected, 28d expansion rate is 1% or so, and compression strength is 40MPa or so, flexural strength are not less than 10MPa, are less prone to early-age crack.
Embodiment 2:
A kind of composite fibre fast repairing material includes following components according to mass ratio:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=0.9:2.5:100: 1.0:0.05.
Organic short fiber selects polypropylene fibre, density 0.91g/cm3, length 4mm, diameter 0.06mm, bullet Property modulus be 4.6GPa, and it successively passes through acetone and pure-acrylic emulsion and carries out surface modification treatment;
Inorganic long fiber selects carbon fiber, and length 9mm, filament diameter be 8 μm, elasticity modulus 230GPa, successively Surface modification treatment is carried out by acetone and pure-acrylic emulsion;
Low alkali sulphate aluminium cement selects fast 42.5 grades of gravity die low alkali sulphate aluminium cements, and cubical expansivity is greater than within 28 days 1%;
Water-reducing agent selects high-efficiency polycarboxylic acid water reducer, solid content 47%, water-reducing rate 35.3%;
Defoaming agent selects polyether-type defoaming agent, is combined by modified silicon polyethers with modified siloxane, pH value 7.
A kind of preparation method of composite fibre fast repairing material, the preparation method the following steps are included:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are claimed according to mass ratio It measures spare, and weighs water according to the mass ratio 100:35 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/2 and low alkali sulphate aluminium cement are mixed It closes and is added in blender, persistently stir 45s under the conditions of stirring frequency is 70r/min and obtain mortar;
3) load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution solution are added into mortar, The composite fibre fast repairing material can be obtained in stirring 45s under the conditions of stirring frequency is 70r/min.
Wherein:
The organic short fiber, inorganic long fiber are successively after acetone and pure-acrylic emulsion carry out surface modification treatment Modification organic short fiber, modified inorganic long fibre, modification procedure is as follows:
Organic short fiber or inorganic long fiber are impregnated shaken in acetone and using supersonic cleaning machine first by step 1 Fiber surface organic solvent is washed away again later and is dried at 40 DEG C by 5min;
The organic short fiber of drying or inorganic long fiber are immersed in 5min in pure-acrylic emulsion, Zhi Houqu by step 2 again It dries out and at room temperature and obtains modified organic short fiber or modified inorganic long fibre.
The pure-acrylic emulsion is methyl acrylic ester, esters of acrylic acid, acrylic acid ternary polymerization lotion, pure-acrylic emulsion In the also acrylonitrile containing 0.23wt%, the propylene peptamine of 0.16wt%, 0.11wt% melamine.
Finally obtained composite fibre fast repairing material is detected, 28d expansion rate is 1% or so, and compression strength is 40MPa or so, flexural strength are not less than 13MPa, are less prone to early-age crack.
Embodiment 3:
A kind of composite fibre fast repairing material includes following components according to mass ratio:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=1.0:2.3:100: 0.7:0.04.
Organic short fiber selects vinal, density 1.3g/cm3, length 5mm, diameter 0.08mm, bullet Property modulus be 4.4GPa, and it successively passes through acetone and pure-acrylic emulsion and carries out surface modification treatment;
Inorganic long fiber selects alkali-resistant glass fibre, and length 12mm, filament diameter are 10 μm, elasticity modulus 80GPa, It successively passes through acetone and pure-acrylic emulsion carries out surface modification treatment;
Low alkali sulphate aluminium cement selects fast 42.5 grades of gravity die low alkali sulphate aluminium cements, and cubical expansivity is greater than within 28 days 1%;
Water-reducing agent selects high-efficiency polycarboxylic acid water reducer, solid content 49%, water-reducing rate 35.7%;
Defoaming agent selects polyether-type defoaming agent, is combined by modified silicon polyethers with modified siloxane, pH value 8.5.
A kind of preparation method of composite fibre fast repairing material, the preparation method the following steps are included:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are claimed according to mass ratio It measures spare, and weighs water according to the mass ratio 100:32 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/2.3 and low alkali sulphate aluminium cement Mixing is added in blender, persistently stirs 35s under the conditions of stirring frequency is 75r/min and obtains mortar;
3) load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution solution are added into mortar, The composite fibre fast repairing material can be obtained in stirring 35s under the conditions of stirring frequency is 75r/min.
Wherein:
The organic short fiber, inorganic long fiber are successively after acetone and pure-acrylic emulsion carry out surface modification treatment Modification organic short fiber, modified inorganic long fibre, modification procedure is as follows:
Organic short fiber or inorganic long fiber are impregnated shaken in acetone and using supersonic cleaning machine first by step 1 Fiber surface organic solvent is washed away again later and is dried at 60 DEG C by 4min;
The organic short fiber of drying or inorganic long fiber are immersed in 4min in pure-acrylic emulsion, Zhi Houqu by step 2 again It dries out and at room temperature and obtains modified organic short fiber or modified inorganic long fibre.
The pure-acrylic emulsion be methyl acrylic ester, esters of acrylic acid, a small amount of acrylic acid ternary polymerization lotion, it is pure The also melamine of the acrylonitrile containing 0.27wt%, the propylene peptamine of 0.18wt%, 0.13wt% in acrylic emulsion.
Finally obtained composite fibre fast repairing material is detected, 28d expansion rate is 1% or so, and compression strength is 45MPa or so, flexural strength are not less than 16MPa, are less prone to early-age crack.
Embodiment 4:
A kind of composite fibre fast repairing material includes following components according to mass ratio:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=1.1:2.0:100: 0.5:0.03.
Organic short fiber selects vinal, density 1.3g/cm3, length 6mm, diameter 0.10, elasticity Modulus is 4.2GPa, and it successively passes through acetone and pure-acrylic emulsion carries out surface modification treatment;
Inorganic long fiber select alkali-resistant glass fibre, length 15mm, filament diameter be 12 μm, elasticity modulus is 80GPa, successively passes through acetone and pure-acrylic emulsion carries out surface modification treatment;
Low alkali sulphate aluminium cement selects fast 42.5 grades of gravity die low alkali sulphate aluminium cements, and cubical expansivity is greater than within 28 days 1%;
Water-reducing agent selects high-efficiency polycarboxylic acid water reducer, solid content 50%, water-reducing rate 36%;
Defoaming agent selects polyether-type defoaming agent, is combined by modified silicon polyethers with modified siloxane, pH value 6.5.
A kind of preparation method of composite fibre fast repairing material, the preparation method the following steps are included:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are claimed according to mass ratio It measures spare, and weighs water according to the mass ratio 100:34 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/2.7 and low alkali sulphate aluminium cement Mixing is added in blender, persistently stirs 40s under the conditions of stirring frequency is 80r/min and obtains mortar;
3) load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution solution are added into mortar, The composite fibre fast repairing material can be obtained in stirring 40s under the conditions of stirring frequency is 80r/min.
Wherein:
The organic short fiber, inorganic long fiber are successively after acetone and pure-acrylic emulsion carry out surface modification treatment Modification organic short fiber, modified inorganic long fibre, modification procedure is as follows:
Organic short fiber or inorganic long fiber are impregnated shaken in acetone and using supersonic cleaning machine first by step 1 Fiber surface organic solvent is washed away again later and is dried at 50 DEG C by 5min;
The organic short fiber of drying or inorganic long fiber are immersed in 5min in pure-acrylic emulsion, Zhi Houqu by step 2 again It dries out and at room temperature and obtains modified organic short fiber or modified inorganic long fibre.
The pure-acrylic emulsion is methyl acrylic ester, esters of acrylic acid, a small amount of acrylic acid ternary polymerization lotion, pure C The also melamine of the acrylonitrile containing 0.3wt%, the propylene peptamine of 0.2wt%, 0.14wt% in lotion.
The finally obtained composite fibre fast repairing material is detected, 28d expansion rate is 1% or so, resistance to compression Intensity is 40MPa or so, and flexural strength is not less than 12MPa, is less prone to early-age crack.

Claims (10)

1. a kind of composite fibre fast repairing material, it is characterised in that: the patching material includes following components according to mass ratio:
Organic short fiber: inorganic long fiber: low alkali sulphate aluminium cement: water-reducing agent: defoaming agent=0.9~1.1:2.0~2.5: 100:0.5~1:0.03~0.05.
2. a kind of composite fibre fast repairing material as described in claim 1, it is characterised in that: the organic short fiber is Polypropylene fibre, vinal or Peroxyacetyl nitrate fiber, the length is 2mm~6mm, diameter be 0.05mm~ 0.1mm, elasticity modulus are not higher than 5GPa.
3. a kind of composite fibre fast repairing material as described in claim 1, it is characterised in that: the inorganic long fiber is Alkali-resistant glass fibre or carbon fiber, the length is 6mm~15mm, filament diameter be 7 μm~12 μm, elasticity modulus is higher than 70GPa。
4. a kind of composite fibre fast repairing material as described in claim 1, it is characterised in that: the low alkali aluminium sulfate Cement is 42.5 grades of low alkali sulphate aluminium cements, and cubical expansivity is greater than 1% within 28 days.
5. a kind of composite fibre fast repairing material as described in claim 1, it is characterised in that: the water-reducing agent is poly- carboxylic Sour water-reducing agent, solid content are 40%~50%, and water-reducing rate is 35%~36%;The defoaming agent is polyether-type defoaming agent, It is combined by modified silicon polyethers with modified siloxane, pH value is 6.5~8.5.
6. a kind of composite fibre fast repairing material as described in claim 1, it is characterised in that: the organic short fiber with Inorganic long fiber be successively the modification organic short fiber after organic solvent and pure-acrylic emulsion carry out surface modification treatment with change Property inorganic long fiber.
7. a kind of composite fibre fast repairing material as claimed in claim 6, it is characterised in that: the organic solvent is second Alcohol or acetone;The pure-acrylic emulsion is the ternary copolymer emulsion of methyl acrylic ester, esters of acrylic acid and acrylic acid, and In the pure-acrylic emulsion also the acrylonitrile containing 0.2wt%~0.3wt%, 0.15wt%~0.2wt% propylene peptamine, The melamine of 0.1wt%~0.14wt%.
8. a kind of preparation method of composite fibre fast repairing material as described in claim 1, it is characterised in that: the preparation side Method the following steps are included:
1) organic short fiber, inorganic long fiber, low alkali sulphate aluminium cement, water-reducing agent, defoaming agent are weighed according to mass ratio standby With, and water is weighed according to mass ratio 100:32~38 of low alkali sulphate aluminium cement and water;
2) water-reducing agent is dissolved in weighed water and obtains aqueous solution, aqueous 1/3~1/2 and low alkali sulphate aluminium cement are mixed It closes, persistently stirs 30s~45s and obtain mortar;
3) it is added load weighted organic short fiber, inorganic long fiber, defoaming agent and remaining aqueous solution into mortar, stirring 30s~ The composite fibre fast repairing material can be obtained in 45s.
9. a kind of preparation method of composite fibre fast repairing material as claimed in claim 8, it is characterised in that: step 2) with The frequency of stirring described in step 3) is 60r/min~80r/min.
10. a kind of preparation method of composite fibre fast repairing material as claimed in claim 8, it is characterised in that: described Organic short fiber, inorganic long fiber are that the modification successively after organic solvent and pure-acrylic emulsion carry out surface modification treatment is organic Staple fiber, modified inorganic long fibre, modification procedure are as follows:
Organic short fiber or inorganic long fiber are impregnated in organic solvent first and use supersonic cleaning machine vibration 3 by step 1 Fiber surface organic solvent is washed away again later and is dried at 40 DEG C~60 DEG C by~5min;
The organic short fiber of drying or inorganic long fiber are immersed in 3~5min in pure-acrylic emulsion, Zhi Houqu by step 2 again It dries out and at room temperature and obtains modified organic short fiber or modified inorganic long fibre.
CN201811030005.3A 2018-09-05 2018-09-05 A kind of composite fibre fast repairing material and preparation method thereof Withdrawn CN109020421A (en)

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CA2424377C (en) * 2000-10-04 2013-07-09 Donald J. Merkley Fiber cement composite materials using sized cellulose fibers
CN1880257A (en) * 2005-06-16 2006-12-20 同济大学 Fiber material for preventing dry shrinkage and cracking of hardening cement base material and its preparation method
CN101891449A (en) * 2010-07-20 2010-11-24 成都天福特种工程材料有限责任公司 Rapid mending agent for cement concrete pavement
CN103664090A (en) * 2013-12-19 2014-03-26 中国中材国际工程股份有限公司 Fiber-hybrid high-ductility cement-based composite material and preparation method thereof
CN104211358A (en) * 2014-09-11 2014-12-17 中国中材国际工程股份有限公司 Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof
CN105837137A (en) * 2016-04-08 2016-08-10 武汉理工大学 Composite reinforcing type mortar for rapid repairing

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Application publication date: 20181218