CN109279834A - A kind of shock resistance waterproof foamed cement and preparation method thereof - Google Patents
A kind of shock resistance waterproof foamed cement and preparation method thereof Download PDFInfo
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- CN109279834A CN109279834A CN201811070022.XA CN201811070022A CN109279834A CN 109279834 A CN109279834 A CN 109279834A CN 201811070022 A CN201811070022 A CN 201811070022A CN 109279834 A CN109279834 A CN 109279834A
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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 shock resistance waterproof foamed cements, its raw material includes: 100 parts of portland cement by weight, and 1-2 parts of lauryl sodium sulfate, α -2-3 parts of sodium olefin sulfonate, 0.3-0.5 parts of foam stabilizer, 0.5-1 parts of coagulant, 0.08-0.12 parts of water-reducing agent, 2-3 parts of waterproofing agent, 18-25 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber.The invention also discloses the preparation methods of above-mentioned shock resistance waterproof foamed cement.Intensity of the present invention is high, and shock resistance is good, good waterproof performance.
Description
Technical field
The present invention relates to cement technology fields more particularly to a kind of shock resistance waterproof foamed cement and preparation method thereof.
Background technique
Foamed cement is a kind of novel light insulation material, is by chemically or physically containing a large amount of sealed porosity
The mode of foaming introduces bubble, and foam and cement slurry are solidified after evenly mixing, hardened and is formed.Foamed cement has thermal insulation separation
The advantages that hot good, but its that there are water absorption rates is high, intensity is low etc. determines, limit the development utilization of foamed cement.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of shock resistance waterproof foamed cement and its preparations
Method, intensity of the present invention is high, and shock resistance is good, good waterproof performance.
A kind of shock resistance waterproof foamed cement proposed by the present invention, raw material include: portland cement 100 by weight
Part, 1-2 parts of lauryl sodium sulfate, α -2-3 parts of sodium olefin sulfonate, 0.3-0.5 parts of foam stabilizer, 0.5-1 parts of coagulant, water-reducing agent
0.08-0.12 parts, 2-3 parts of waterproofing agent, 18-25 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent be paper mill sludge ash, silicon ash,
Polypropylene fibre and modified carbon fiber.
Preferably, in the preparation process of modified carbon fiber, carbon fiber is taken, obtains median fiber through concentrated nitric acid oxidation；It will
Median fiber is added in the ethanol water of 3- mercaptopropyl trimethoxysilane, is warming up to 70-80 DEG C, insulated and stirred 1-2h, mistake
Leaching filter cake, successively uses ethyl alcohol, water washing, and drying obtains modified carbon fiber.
Preferably, in the preparation process of modified carbon fiber, the step of concentrated nitric acid oxidation are as follows: concentrated nitric acid is added in carbon fiber
In, it is warming up to 85-95 DEG C, insulated and stirred 1-2h takes carbon fiber to wash, and drying obtains median fiber.
Preferably, in the preparation process of modified carbon fiber, the weight ratio of carbon fiber and concentrated nitric acid is 1:10-20.
Preferably, in the preparation process of modified carbon fiber, the matter of the ethanol water of 3- mercaptopropyl trimethoxysilane
Amount score is 3-5wt%, and the volume ratio of second alcohol and water is 0.5-1:9-9.5.
Preferably, waterproofing agent is iron chloride, frerrous chloride, fluorine sodium silanolate.
Preferably, water-reducing agent is poly carboxylic acid series water reducer.
Preferably, coagulant is calcium chloride and sodium carbonate.
Preferably, foam stabilizer is calcium stearate and hydroxypropyl starch ether.
Preferably, the length of polypropylene fibre and modified carbon fiber is 4-5mm.
Preferably, the weight ratio of paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber is 14-16:5-7:0.5-
1:0.5-1.
Preferably, iron chloride, frerrous chloride, fluorine sodium silanolate weight ratio be 1.25-1.35:1:2-3.
Preferably, calcium chloride and sodium carbonate 1:2-3.
Preferably, the weight ratio of calcium stearate and hydroxypropyl starch ether is 8-9:1.
In the preparation process of above-mentioned modified carbon fiber, the use of the ethanol water of 3- mercaptopropyl trimethoxysilane is not provided
Amount, determines its raw material according to concrete operations, can be uniformly dispersed median fiber.
The invention also provides above-mentioned shock resistance waterproof foamed cement preparation methods, include the following steps: paper mill sludge
Ash is uniformly mixed so as to obtain solution A with water；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, subtract
Aqua, waterproofing agent, silicon ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding is supported
Shield obtains shock resistance waterproof foamed cement.
The present invention selects lauryl sodium sulfate, α-sodium olefin sulfonate to cooperate and is used as foaming agent, can increase foaming
Multiple and the stability that can improve foam keep foam uniformly tiny, cooperate with portland cement, can make the present invention
Consistent internal structure is fine and close, improves intensity and cracking resistance；It selects calcium stearate and hydroxypropyl starch ether to cooperate, increases bubble
The stability of foam further increases the compactness of internal structure of the present invention, improves intensity and cracking resistance；Select again calcium chloride and
Sodium carbonate adjusts the rate of set and setting rate of portland cement as coagulant, so that the retention time of foam and cement
Condensation firm time be mutually matched, avoid the problem that the mould that collapses, and can make the present invention have even compact structure, increase this
The intensity of invention；It selects poly carboxylic acid series water reducer that can further avoid the mould that collapses, and waterproofness of the invention can be increased；Chlorination
Iron, frerrous chloride, fluorine sodium silanolate cooperate, and iron chloride, frerrous chloride can generate hydrogen-oxygen with the calcium hydroxide reaction in cement
Change iron colloid and calcium chloride, it is not soluble in water that calcium chloride can react generation with tricalcium aluminate, calcium hydroxide, the dicalcium silicate in cement
Crystal, ferric hydroxide colloid and crystal not soluble in water can improve cement structures with the capillary channel of filling-foam cement
Compactness reduces water absorption rate, to increase waterproofness of the invention, and cooperates water-soluble polymer fluorine sodium silanolate, foamed cement
After drying, waterproof membrane can be formed in cement surface, cooperated in terms of improving cement internal structure and surface texture two,
Greatly increase waterproofness of the invention；Paper mill sludge ash, silicon ash cooperate, and can greatly increase intensity of the invention, anti-impact
Performance is hit, and paper mill sludge ash can cooperate with waterproofing agent and further increase waterproof performance of the invention, but can reduced
Toughness of the invention is easy cracking；Polypropylene fibre and modified carbon fiber are added, carbon fiber contains through concentrated nitric acid processing rear surface
Many carboxyls, hydroxyl, then through 3- mercaptopropyl trimethoxysilane graft modification, reduce hydrophily and carbon fiber surface is coarse, promote
The adherency of water inlet mud, then cooperate with polypropylene fibre, it can keep the present invention that there is higher-strength, while having preferable
Toughness and crack resistance, and polypropylene fibre and modified carbon fiber hydrophily are low, will not reduce water imbibition of the invention, and papermaking
The water-insoluble colloid and crystal that sludge ash, waterproofing agent generate can be filled in the capillary channel between fiber and cement, into one
Step increases waterproofness and intensity of the invention；The polypropylene fibre and modified carbon fiber of suitable length can further increase this hair
Bright toughness；Above-mentioned each substance is cooperated with suitable proportion, can further increase intensity of the invention, waterproofness and tough
Property.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of shock resistance waterproof foamed cement, raw material include: 100 parts of portland cement by weight, dodecyl sulphur
1.5 parts of sour sodium, 2.5 parts of α-sodium olefin sulfonate, 0.4 part of foam stabilizer, 0.75 part of coagulant, 0.1 part of water-reducing agent, 2.5 parts of waterproofing agent,
21 parts of reinforcing agent, 37.5 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber.
Above-mentioned shock resistance waterproof foamed cement preparation method includes the following steps: for paper mill sludge ash to be uniformly mixed so as to obtain with water
Solution A；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon
Ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding, it is anti-that maintenance obtains shock resistance
Water blown cement.
Embodiment 2
A kind of shock resistance waterproof foamed cement, raw material include: 100 parts of portland cement by weight, dodecyl sulphur
1 part of sour sodium, 3 parts of α-sodium olefin sulfonate, 0.3 part of foam stabilizer, 1 part of coagulant, 0.08 part of poly carboxylic acid series water reducer, 3 parts of waterproofing agent,
18 parts of reinforcing agent, 40 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber；
In the preparation process of modified carbon fiber, carbon fiber is added in concentrated nitric acid, is warming up to 85 DEG C, insulated and stirred 2h,
Carbon fiber is taken to wash, drying obtains median fiber；The 3- mercapto propyl trimethoxy that mass fraction is 3wt% is added in median fiber
In the ethanol water of silane, 80 DEG C are warming up to, insulated and stirred 1h filters to take filter cake, successively uses ethyl alcohol, water washing, dries
To modified carbon fiber, wherein the weight ratio of carbon fiber and concentrated nitric acid is 1:20, and the ethyl alcohol of 3- mercaptopropyl trimethoxysilane is water-soluble
In liquid, the volume ratio of second alcohol and water is 0.5:9.5.
Above-mentioned shock resistance waterproof foamed cement preparation method includes the following steps: for paper mill sludge ash to be uniformly mixed so as to obtain with water
Solution A；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon
Ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding, it is anti-that maintenance obtains shock resistance
Water blown cement.
Embodiment 3
A kind of shock resistance waterproof foamed cement, raw material include: 100 parts of portland cement by weight, dodecyl sulphur
2 parts of sour sodium, 2 parts of α-sodium olefin sulfonate, 0.5 part of foam stabilizer, 0.5 part of coagulant, 0.12 part of poly carboxylic acid series water reducer, waterproofing agent 2
Part, 25 parts of reinforcing agent, 35 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber；
In the preparation process of modified carbon fiber, carbon fiber is added in concentrated nitric acid, is warming up to 95 DEG C, insulated and stirred 1h,
Carbon fiber is taken to wash, drying obtains median fiber；The 3- mercapto propyl trimethoxy that mass fraction is 5wt% is added in median fiber
In the ethanol water of silane, 70 DEG C are warming up to, insulated and stirred 2h filters to take filter cake, successively uses ethyl alcohol, water washing, dries
To modified carbon fiber, wherein the weight ratio of carbon fiber and concentrated nitric acid is 1:10, and the ethyl alcohol of 3- mercaptopropyl trimethoxysilane is water-soluble
In liquid, the volume ratio of second alcohol and water is 1:9；
The length of polypropylene fibre and modified carbon fiber is 4-5mm；
Paper mill sludge ash, silicon ash, the weight ratio of polypropylene fibre and modified carbon fiber are 16:5:1:0.5.
Above-mentioned shock resistance waterproof foamed cement preparation method includes the following steps: for paper mill sludge ash to be uniformly mixed so as to obtain with water
Solution A；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon
Ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding, it is anti-that maintenance obtains shock resistance
Water blown cement.
Embodiment 4
A kind of shock resistance waterproof foamed cement, raw material include: 100 parts of portland cement by weight, dodecyl sulphur
1.2 parts of sour sodium, 0.35 part of foam stabilizer, 0.8 part of coagulant, 0.09 part of poly carboxylic acid series water reducer, is prevented by 2.8 parts of α-sodium olefin sulfonate
2.7 parts of aqua, 20 parts of reinforcing agent, 38 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber
Dimension；
In the preparation process of modified carbon fiber, carbon fiber is added in concentrated nitric acid, is warming up to 87 DEG C, insulated and stirred
1.8h takes carbon fiber to wash, and drying obtains median fiber；The 3- mercapto propyl that mass fraction is 3.5wt% is added in median fiber
In the ethanol water of trimethoxy silane, 78 DEG C are warming up to, insulated and stirred 1.3h filters to take filter cake, successively with ethyl alcohol, washing
It washs, drying obtains modified carbon fiber, wherein the weight ratio of carbon fiber and concentrated nitric acid is 1:18,3- mercaptopropyl trimethoxysilane
Ethanol water in, the volume ratio of second alcohol and water is 0.7:9.3；
The length of polypropylene fibre and modified carbon fiber is 4-5mm；
Paper mill sludge ash, silicon ash, the weight ratio of polypropylene fibre and modified carbon fiber are 14:7:0.5:1；
Waterproofing agent is iron chloride, frerrous chloride, fluorine sodium silanolate, wherein the weight of iron chloride, frerrous chloride, fluorine sodium silanolate
Than for 1.25:1:3；
Coagulant is calcium chloride and sodium carbonate, wherein calcium chloride and sodium carbonate 1:2；
Foam stabilizer is calcium stearate and hydroxypropyl starch ether, wherein the weight ratio of calcium stearate and hydroxypropyl starch ether is
9:1.
Above-mentioned shock resistance waterproof foamed cement preparation method includes the following steps: for paper mill sludge ash to be uniformly mixed so as to obtain with water
Solution A；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon
Ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding, it is anti-that maintenance obtains shock resistance
Water blown cement.
Embodiment 5
A kind of shock resistance waterproof foamed cement, raw material include: 100 parts of portland cement by weight, dodecyl sulphur
1.8 parts of sour sodium, 0.45 part of foam stabilizer, 0.7 part of coagulant, 0.11 part of poly carboxylic acid series water reducer, is prevented by 2.2 parts of α-sodium olefin sulfonate
2.3 parts of aqua, 23 parts of reinforcing agent, 37 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber
Dimension；
In the preparation process of modified carbon fiber, carbon fiber is added in concentrated nitric acid, is warming up to 93 DEG C, insulated and stirred
1.2h takes carbon fiber to wash, and drying obtains median fiber；The 3- mercapto propyl that mass fraction is 4.5wt% is added in median fiber
In the ethanol water of trimethoxy silane, 72 DEG C are warming up to, insulated and stirred 1.7h filters to take filter cake, successively with ethyl alcohol, washing
It washs, drying obtains modified carbon fiber, wherein the weight ratio of carbon fiber and concentrated nitric acid is 1:12,3- mercaptopropyl trimethoxysilane
Ethanol water in, the volume ratio of second alcohol and water is 0.8:9.2；
The length of polypropylene fibre and modified carbon fiber is 4-5mm；
Paper mill sludge ash, silicon ash, the weight ratio of polypropylene fibre and modified carbon fiber are 15:6:0.7:0.7；
Waterproofing agent is iron chloride, frerrous chloride, fluorine sodium silanolate, wherein the weight of iron chloride, frerrous chloride, fluorine sodium silanolate
Than for 1.35:1:2；
Coagulant is calcium chloride and sodium carbonate, wherein calcium chloride and sodium carbonate 1:3；
Foam stabilizer is calcium stearate and hydroxypropyl starch ether, wherein the weight ratio of calcium stearate and hydroxypropyl starch ether is
8:1.
Above-mentioned shock resistance waterproof foamed cement preparation method includes the following steps: for paper mill sludge ash to be uniformly mixed so as to obtain with water
Solution A；By portland cement, lauryl sodium sulfate, α-sodium olefin sulfonate, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon
Ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added and mixes, and injection mold molding, it is anti-that maintenance obtains shock resistance
Water blown cement.
Performance detection is carried out to embodiment 1-5, result is as follows:
Intensity of the present invention is high as can be seen from the above table, good waterproof performance.
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 (10)
1. a kind of shock resistance waterproof foamed cement, which is characterized in that its raw material includes: 100 parts of portland cement by weight, and ten
1-2 parts of sodium dialkyl sulfate, α -2-3 parts of sodium olefin sulfonate, 0.3-0.5 parts of foam stabilizer, 0.5-1 parts of coagulant, water-reducing agent 0.08-
0.12 part, 2-3 parts of waterproofing agent, 18-25 parts of reinforcing agent, 35-40 parts of water, wherein reinforcing agent is paper mill sludge ash, silicon ash, poly- third
Alkene fiber and modified carbon fiber.
2. shock resistance waterproof foamed cement according to claim 1, which is characterized in that in the preparation process of modified carbon fiber
In, carbon fiber is taken, obtains median fiber through concentrated nitric acid oxidation；Median fiber is added to the ethyl alcohol of 3- mercaptopropyl trimethoxysilane
In aqueous solution, it is warming up to 70-80 DEG C, insulated and stirred 1-2h filters to take filter cake, successively uses ethyl alcohol, water washing, and drying is modified
Carbon fiber；Preferably, in the preparation process of modified carbon fiber, the step of concentrated nitric acid oxidation are as follows: concentrated nitric acid is added in carbon fiber
In, it is warming up to 85-95 DEG C, insulated and stirred 1-2h takes carbon fiber to wash, and drying obtains median fiber；Preferably, in modified carbon fiber
In the preparation process of dimension, the weight ratio of carbon fiber and concentrated nitric acid is 1:10-20；Preferably, in the preparation process of modified carbon fiber
In, the mass fraction of the ethanol water of 3- mercaptopropyl trimethoxysilane is 3-5wt%, and the volume ratio of second alcohol and water is 0.5-
1:9-9.5.
3. shock resistance waterproof foamed cement according to claim 1 or claim 2, which is characterized in that waterproofing agent is iron chloride, protochloride
Iron, fluorine sodium silanolate；Preferably, water-reducing agent is poly carboxylic acid series water reducer.
4. any one of -3 shock resistance waterproof foamed cement according to claim 1, which is characterized in that coagulant be calcium chloride and
Sodium carbonate.
5. any one of -4 shock resistance waterproof foamed cement according to claim 1, which is characterized in that foam stabilizer is calcium stearate
And hydroxypropyl starch ether.
6. any one of -5 shock resistance waterproof foamed cement according to claim 1, which is characterized in that polypropylene fibre and modification
The length of carbon fiber is 4-5mm；Preferably, the weight ratio of paper mill sludge ash, silicon ash, polypropylene fibre and modified carbon fiber is
14-16:5-7:0.5-1:0.5-1.
7. according to any one of the claim 3-6 shock resistance waterproof foamed cement, which is characterized in that iron chloride, frerrous chloride,
The weight ratio of fluorine sodium silanolate is 1.25-1.35:1:2-3.
8. according to any one of the claim 4-7 shock resistance waterproof foamed cement, which is characterized in that calcium chloride and sodium carbonate 1:
2-3。
9. according to any one of the claim 5-8 shock resistance waterproof foamed cement, which is characterized in that calcium stearate and hydroxypropyl
The weight ratio of starch ether is 8-9:1.
10. one kind shock resistance waterproof foamed cement preparation method as described in claim any one of 1-9, which is characterized in that including
Following steps: paper mill sludge ash and water are uniformly mixed so as to obtain solution A；By portland cement, lauryl sodium sulfate, α-olefin sulfonic acid
Sodium, foam stabilizer, coagulant, water-reducing agent, waterproofing agent, silicon ash, polypropylene fibre and modified carbon fiber mix, and solution A is then added
It mixes, injection mold molding, maintenance obtains shock resistance waterproof foamed cement.
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| CN110791265A (en) * | 2019-11-26 | 2020-02-14 | 陕西博世威科技有限责任公司 | Preparation method of carbon fiber toughening agent for oil well cement |
| CN110791265B (en) * | 2019-11-26 | 2021-10-01 | 四川盛年同缔实业有限公司 | Preparation method of carbon fiber toughening agent for oil well cement |
| CN115028413A (en) * | 2022-06-23 | 2022-09-09 | 林治刚 | Wear-resistant high-strength cement and preparation method thereof |
| CN116789424A (en) * | 2023-07-19 | 2023-09-22 | 捷安特（昆山）有限公司 | Preparation method of carbon fiber cement composite material |
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Application publication date: 20190129 |