CN105669086B - Long piled wharf panel aqueous polyurethane carbon fiber polymer concrete and preparation method - Google Patents
Long piled wharf panel aqueous polyurethane carbon fiber polymer concrete and preparation method Download PDFInfo
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- CN105669086B CN105669086B CN201610003571.XA CN201610003571A CN105669086B CN 105669086 B CN105669086 B CN 105669086B CN 201610003571 A CN201610003571 A CN 201610003571A CN 105669086 B CN105669086 B CN 105669086B
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- carbon fiber
- aqueous polyurethane
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/16—Polyurethanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention is to provide a kind of long piled wharf panel aqueous polyurethane carbon fiber polymer concrete and preparation method.It is made up of stone, middle sand, flyash, silicon ash, naphthalene series high-efficiency water-reducing agent, aqueous polyurethane, silane coupler and carbon fiber, the ratio of weight and number of wherein stone, middle sand, flyash, silicon ash, naphthalene series high-efficiency water-reducing agent, aqueous polyurethane and silane coupler is followed successively by：41.1%~45.4%, 30.9%~32.1%, 12.6%~13.5%, 3%~3.4%, 0.2%~0.25%, 7.4%~9.3%, 0.1%~0.15%, carbon fiber volume volume is 0.1%~0.3%.The polymer concrete of this addition aqueous polyurethane and carbon fiber, have it is wear-resistant, it is high-strength, it is durable, the advantages of chloride-penetration resistance, so as to prevent the freeze-thaw damage of concrete and steel bar corrosion from destroying, the life-span of structure is extended.It can be used in higher to life requirement, bear fatigue load or repair in relatively difficult high pile pier structure.
Description
Technical field
The present invention relates to a kind of modified concrete, and the present invention also relates to a kind of preparation method of modified concrete.Tool
Say it is a kind of aqueous polyurethane carbon fiber polymer concrete and preparation method suitable for long piled wharf panel body.
Background technology
With the rapid development of coastal cities economy, marine shipping has become a kind of essential communications and transportation side
Formula.So as to which the construction of harbour is also more and more, and wherein long piled wharf is widely used.Wharf slab is high pile pier structure
One important component, the durability of wharf slab directly affect the durability of whole long piled wharf.Meanwhile wharf slab by
Damage maintenance delays the use of harbour, can influence actual utilization benefit, therefore the selection of wharf slab material is highly important.
Normal concrete wharf slab is often damaged because of Chloride Attack, frost and carbonization.Although these damages are initially superficials
Face, over time, they can extend to endothecium structure material, cause reinforcement corrosion, threaten the life-span of bed rearrangement harbour.
Therefore it is required that people develop the longer wharf slab material of durability.
Had many researchs on harbour beam slab carbon fiber polymer modification concrete both at home and abroad at present, and have for
The technical research and the document report of analysis：Such as " the enhancing Analysis on Mechanism of polymer steel fiber reinforced concrete " (Luo Lifeng, Zhou Jian
Spring, Huang training man of virtue and ability《Composite journal》2002,19:In 46-50.), the polymer steel fibre modified concrete of use is addition
What butadiene-styrene latex was prepared；" anti-freezing property of polypropylene fibre composite glue powder modified concrete " (lies prostrate sharp roc《Concrete with
Cement products》, 2014,11:In 49-51.), the polymer fiber and modified concrete mentioned is incorporation polypropylene fibre and acetic acid
Vinyl acetate-ethylene copolymer latex powder is modified processing；" steel fibre polymer cement concrete physical and mechanical property is ground
Study carefully " (Zhao Xiang Chongqing Jiaotong Universities, 2013.), high property is obtained by the method that steel fibre and styrene-butadiene emulsion are filled in concrete
Can cement concrete, this steel fibre polymer high performance concrete have tensile strength is high, deformability is good, durability with
Corrosion resistance is good, has the characteristics that good adhesive property.This concrete is entered by adding steel fibre and styrene-butadiene emulsion
Row modification；" performance study of fiber reinforced polymer cement concrete " (Yao Shu justice Harbin Institute of Technology,
2011.) intensity of concrete, toughness and durability, are improved by adding vinal and steel fibre；By adding fourth
Benzene latex improves the cohesiveness of fiber and concrete substrate interface；Publication No. CN1O301173OA's (2013-04-03) is special
In " a kind of fiber and polymer composite toughening concrete and preparation method thereof " disclosed in sharp file, concrete basic raw material
It is common for coarse aggregate, fine aggregate, portland cement, flyash, polycarboxylate water-reducer, vinal, cinnamic acrylic ester
Polymers.
The content of the invention
Wharf slab can be efficiently solved it is an object of the invention to provide one kind under complex environment easily to be corroded
The problem of destruction, greatly reduce the long piled wharf panel aqueous polyurethane carbon fiber polymer of the rehabilitation expense during operation
Concrete.The present invention also aims to provide a kind of system of long piled wharf panel aqueous polyurethane carbon fiber polymer concrete
Preparation Method.
The long piled wharf panel aqueous polyurethane carbon fiber polymer concrete of the present invention is by stone, middle sand, flyash, silicon
Ash, naphthalene series high-efficiency water-reducing agent, aqueous polyurethane, silane coupler and carbon fiber are made, wherein stone, middle sand, flyash, silicon
Ash, naphthalene series high-efficiency water-reducing agent, the ratio of weight and number of aqueous polyurethane and silane coupler are followed successively by：41.1%~45.4%,
30.9%~32.1%, 12.6%~13.5%, 3%~3.4%, 0.2%~0.25%, 7.4%~9.3%, 0.1%~
0.15%, carbon fiber volume volume is 0.1%~0.3%.
The preparation method of long piled wharf panel aqueous polyurethane carbon fiber polymer concrete of the present invention is：
(1) methylcellulose is added in 80 DEG C of water, dispersant concussion 3min, stands 20min, add carbon fiber,
Continue concussion to carbon fiber to be completely dispersed；
(2) product for obtaining step (1) is filtered, and the carbon fiber filtered out is dried；
(3) at normal temperatures, dry stone, middle sand, flyash, silicon ash and carbon fiber are put into mixer, stirred
3min is mixed, then adds aqueous polyurethane, is stirred for 3min, is subsequently added into silane coupler, 1min is stirred, is eventually adding naphthalene system
High efficiency water reducing agent, mixture is set to reach uniform state.
The present invention for long piled wharf general panels easily by corrosion failure, the problem of low intensity, there is provided Yi Zhongtian
Add the polymer concrete of aqueous polyurethane and carbon fiber.This polymer concrete can efficiently solve wharf slab multiple
Under heterocycle border easily by corrosion failure the problem of, greatly reduce the rehabilitation expense during operation.This addition is water-based
The polymer concrete of polyurethane and carbon fiber, have it is wear-resistant, it is high-strength, it is durable, the advantages of chloride-penetration resistance, so as to prevent
The freeze-thaw damage and steel bar corrosion of concrete destroy, and the life-span of structure is extended, so as to obtain more preferable economic benefit.
The invention provides long piled wharf panel aqueous polyurethane carbon fiber polymer concrete, it can be used in resistance to
Long property requires higher, bears fatigue load or repairs in relatively difficult high pile pier structure.It can also be used according to its feature
In concrete workses such as marine structure, highway, tunnel, runways.
Aqueous polyurethane carbon fiber polymer concrete provided by the invention, compared with traditional cement concrete have with
Lower major advantage：
Firstth, intensity is high, waterborne polyurethane film be formed at slurry and the interface that gathers materials on, aggregate and slurry can be strengthened
Between cohesive force.It can optimize polymer concrete internal structure after carbon fiber incorporation simultaneously, improve material globality.And by
It is higher in the carbon fiber relative intensity and tension toughness of addition, therefore the bending resistance of polymer concrete, tension can be substantially improved
Intensity.Its compressive strength is 83~88MPa, and bending strength is 18~20MPa, and tensile strength is 14~16MPa.
Secondth, good endurance, because the pore of the film of aqueous polyurethane formation can prevent the absorption and infiltration of water, from
And it can effectively prevent the entrance of corrosive medium；Secondly because the drawknot effect of carbon fiber is improved anti-crack ability, subtract
Lack the formation of micro-crack grid, prevent the transmission of moisture；The silicon ash finally added makes to produce high PH media pair in concrete
Reinforced steel bar rust preventing erosion has protective effect.
3rd, hardening post-consumer polymer concrete has excellent impervious and anti-freezing property.
4th, preparation technology is simple, easy for construction, and wearability is excellent with shock resistance.
5th, the flyash and silicon ash added belongs to industrial waste, and aqueous polyurethane, which has, not to be polluted, transportation safety etc.
Feature.Therefore make material that there is the characteristics of energy-conserving and environment-protective.
6th, with extensive：This material is mainly used in bearing fatigue load, and life requirement is high or repairs relatively difficult
Long piled wharf panel construction.It can in addition contain be widely used in the coagulations such as marine structure, highway, tunnel, airfield runway
Geotechnological journey.
Embodiment
Illustrate below and the present invention is described in more detail.
The invention provides long piled wharf panel aqueous polyurethane carbon fiber polymer concrete.It is not surpassed by maximum particle diameter
Cross 20mm stone, middle sand, flyash, silicon ash, naphthalene series high-efficiency water-reducing agent, aqueous polyurethane, silane coupler and carbon fiber
It is prepared, wherein maximum particle diameter is no more than 20mm stone, middle sand, flyash, silicon ash, naphthalene series high-efficiency water-reducing agent, water-based poly-
The proportioning of this several raw material of urethane and silane coupler, is followed successively by parts by weight：41.1%~45.4%, 30.9%
~32.1%, 12.6%~13.5%, 3%~3.4%, 0.2%~0.25%, 7.4%~9.3%, 0.1%~0.15%.
Carbon fiber volume volume is 0.1%~0.3%.
The aqueous polyurethane carbon fiber polymer concrete of the present invention is prepared in accordance with the following methods：
1 proportioning：Maximum particle diameter is no more than 20mm stone, middle sand, flyash, silicon ash, naphthalene series high-efficiency water-reducing agent, water-based poly-
Urethane and silane coupler this several raw material, are followed successively by according to weight proportion：41.1%~45.4%, 30.9%~
32.1%th, 12.6%~13.5%, 3%~3.4%, 0.2%~0.25%, 7.4%~9.3%, 0.1%~0.15%.Carbon
Fiber volume volume is 0.1%~0.3%.
2 preparation technologies：
1) water that water temperature is 80 DEG C is poured into basin, methylcellulose dispersant concussion 3min is subsequently placed into, stands
20min, methylcellulose is set to solve homogeneously in water.Carbon fiber is added again, continues concussion to carbon fiber and is completely dispersed.
2) carbon fiber filter is come out using screen pack, is placed in drying baker and dries.
3) dry stone, middle sand, flyash, silicon ash and carbon fiber at normal temperatures, are put into forced mixer
In, stir 3min.Aqueous polyurethane is then added, is stirred for 3min.Silane coupler is subsequently added into, stirs 1min.Finally plus
Enter naphthalene series high-efficiency water-reducing agent, mixture is reached uniform state, you can constructed.
Tested according to following experiments proportioning, test its mechanical property.
Embodiment 1：Maximum particle diameter no more than 20mm stone, middle sand, flyash, silicon ash, be condensed with β-naphthalenesulfonateformaldehyde formaldehyde
Thing is the concrete high efficiency water reducing agent of main component, solid content is 35% aqueous polyurethane, using gamma-aminopropyl-triethoxy as
The silane coupler of main component, this several raw material are followed successively by according to weight proportion：41.4%th, 32.1%, 13.5%, 3.4%,
0.2%th, 9.3%, 0.1%.Length 7mm carbon fiber volume volume is 0.3%.
Embodiment 2：Maximum particle diameter no more than 20mm stone, middle sand, flyash, silicon ash, be condensed with β-naphthalenesulfonateformaldehyde formaldehyde
Thing is the concrete high efficiency water reducing agent of main component, solid content is 35% aqueous polyurethane and with the ethoxy of γ-aminopropyl three
Base is the silane coupler of main component, and this several raw material is followed successively by according to weight proportion：45.4%th, 31.2%, 12.6%,
3.0%th, 0.25%, 7.4%, 0.15%.Length 7mm carbon fiber volume volume is 0.1%.
Above-described embodiment is the further explanation to the present invention, but does not limit the present invention.
The long piled wharf panel aqueous polyurethane carbon fiber polymer concrete material prepared according to the formula in examples detailed above
Material, after tested, its Main Mechanical is shown in Table 1
The Main Mechanical of the long piled wharf panel aqueous polyurethane carbon fiber polymer concrete material of table 1
| Performance | Compressive strength MPa | Bending strength Mpa | Tensile strength Mpa |
| Index | 83~88 | 18~20 | 14~16 |
Claims (4)
- A kind of 1. long piled wharf panel aqueous polyurethane carbon fiber polymer concrete, it is characterized in that being no more than by maximum particle diameter 20mm stone, middle sand, flyash, silicon ash, the concrete high-efficiency diminishing using β-naphthalene sulfonic acid-formaldehyde condensation product as main component Aqueous polyurethane that agent, solid content are 35%, silane coupler and carbon fiber using gamma-aminopropyl-triethoxy as main component Be made, maximum particle diameter no more than 20mm stone, middle sand, flyash, silicon ash, using β-naphthalene sulfonic acid-formaldehyde condensation product as mainly into Point concrete high efficiency water reducing agent, solid content be 35% aqueous polyurethane, using gamma-aminopropyl-triethoxy as main component Silane coupler is followed successively by according to weight proportion：41.4%th, 32.1%, 13.5%, 3.4%, 0.2%, 9.3%, 0.1%, it is long The carbon fiber volume volume for spending 7mm is 0.3%.
- A kind of 2. long piled wharf panel aqueous polyurethane carbon fiber polymer concrete, it is characterized in that being no more than by maximum particle diameter 20mm stone, middle sand, flyash, silicon ash, the concrete high-efficiency diminishing using β-naphthalene sulfonic acid-formaldehyde condensation product as main component Aqueous polyurethane that agent, solid content are 35%, silane coupler and carbon fiber using gamma-aminopropyl-triethoxy as main component Be made, by maximum particle diameter no more than 20mm stone, middle sand, flyash, silicon ash, using β-naphthalene sulfonic acid-formaldehyde condensation product be main Aqueous polyurethane that concrete high efficiency water reducing agent, the solid content of composition are 35%, using gamma-aminopropyl-triethoxy as main component Silane coupler be followed successively by according to weight proportion：45.4%th, 31.2%, 12.6%, 3.0%, 0.25%, 7.4%, 0.15%, length 7mm carbon fiber volume volume are 0.1%.
- 3. a kind of preparation method of the long piled wharf panel aqueous polyurethane carbon fiber polymer concrete described in claim 1, It is characterized in that：(1) methylcellulose is added in 80 DEG C of water, dispersant concussion 3min, stands 20min, add carbon fiber, continue Concussion to carbon fiber is completely dispersed；(2) product for obtaining step (1) is filtered, and the carbon fiber filtered out is dried；(3) at normal temperatures, dry stone, middle sand, flyash, silicon ash and carbon fiber are put into mixer, stirred 3min, aqueous polyurethane is then added, be stirred for 3min, be subsequently added into silane coupler, stir 1min, be eventually adding naphthalene system height Water reducer is imitated, mixture is reached uniform state.
- 4. a kind of preparation method of the long piled wharf panel aqueous polyurethane carbon fiber polymer concrete described in claim 2, It is characterized in that：(1) methylcellulose is added in 80 DEG C of water, dispersant concussion 3min, stands 20min, add carbon fiber, continue Concussion to carbon fiber is completely dispersed；(2) product for obtaining step (1) is filtered, and the carbon fiber filtered out is dried；(3) at normal temperatures, dry stone, middle sand, flyash, silicon ash and carbon fiber are put into mixer, stirred 3min, aqueous polyurethane is then added, be stirred for 3min, be subsequently added into silane coupler, stir 1min, be eventually adding naphthalene system height Water reducer is imitated, mixture is reached uniform state.
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| CN111517718B (en) * | 2020-04-26 | 2021-11-12 | 上海兆捷实业发展有限公司 | Steel fiber high-strength concrete and preparation method thereof |
| CN111548180B (en) * | 2020-05-29 | 2022-03-25 | 广东省水利水电科学研究院 | Fish nest type organic fiber macroporous concrete retaining wall and construction method thereof |
| CN113264726A (en) * | 2021-04-30 | 2021-08-17 | 中铁二十一局集团第二工程有限公司 | C80 high-performance pump concrete and preparation technology thereof |
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| CN104876474B (en) * | 2015-04-22 | 2017-03-08 | 哈尔滨工程大学 | Floorings water-based polyurethane polymer concrete and preparation method |
| CN104817292B (en) * | 2015-04-22 | 2017-07-11 | 哈尔滨工程大学 | Bridge floor repairing water-based polyurethane polymer mortar and preparation method thereof |
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