CN101250903A - Surface coating anticorrosion concrete and construction method - Google Patents
Surface coating anticorrosion concrete and construction method Download PDFInfo
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- CN101250903A CN101250903A CNA2008100609207A CN200810060920A CN101250903A CN 101250903 A CN101250903 A CN 101250903A CN A2008100609207 A CNA2008100609207 A CN A2008100609207A CN 200810060920 A CN200810060920 A CN 200810060920A CN 101250903 A CN101250903 A CN 101250903A
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B2111/26—Corrosion of reinforcement resistance
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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
Abstract
The invention provides a surface application anti-corrosion concrete and a preparation method thereof. The anti-corrosion concrete can be obtained as follows: after concrete base maintenance 28-dag, the surface of the concrete base is applied with moisture curing epoxy resin priming lacquer, epoxy glass flakes heavy-duty corrosion protection coating, acrylic polyurethane finishing coat from the inside to the outside in order, and the surface application anti-corrosion concrete is obtained; mass components of concrete base raw materials are that (portland cement plus fly ash) : water : water reducing agent : fine aggregate : coarse aggregate is equal to 1 :0.5-0.8 : 0.008-0.012 : 3.0-3.4 :3.6-4.0; on the basis of the portland cement and the fly ash, the mass ratio of the Portland cement and the fly ash is 1 : 0.25-0.45; the fine aggregate is sand with the granularity of 0.15-4.75 mm; the coarse aggregate is gravel with the granularity of 4.75-19.00 mm. The surface application anti-corrosion concrete of the invention has high anti-corrosion property; the service life of once surface application concrete can reach 15-20 years.
Description
(1) technical field
The present invention relates to a kind of surface coating anticorrosion concrete and job practices.
(2) background technology
For the reinforced concrete structure of building in the marine environment, as harbour building, harbour, bridge spanning the sea, ocean platform and sea wall, the chloride in seawater and the atmosphere produces very strong corrosiveness to reinforced concrete structure, causes structural failure, even destroys.The survey showed that, and sixties south China, 27 harbours, East China concrete steel building invar muscle corrosion and destruction account for 74%; Use in the harbour steel concrete harbour in 7～25 years in 18 in south China, and excessive or construction quality is poor because of concrete water-cement ratio, corrosion of steel bar destroys and accounts for 89%; Corrosion of steel bar almost takes place and destroys in Anhui 14 hydraulic concrete buildings to some extent.The main cause that coastal reinforced concrete structure is destroyed by chloride corrosion is that chlorion invades inside concrete by diffusion, reduce concrete basicity, destroy the passivating film of rebar surface and cause reinforcing bar and get rusty and expand, further cause surperficial concrete cracking and peel off the continuous deterioration of structure function of use and mechanical property.
At present, both at home and abroad mainly contain following six kinds: (1) prestressed concrete in the measure aspect the Rust of Rebar in Concrete that prevents.Prestressed concrete member can be controlled the generation in crack effectively; stop that splitting earlier afterwards becomes rusty and become rusty and split the generation of interactive phenomenon and spread; and the protective layer thickness of prestressed concrete, match ratio and water/binder ratio require all to be higher than other concrete component, and durability is better relatively.But in a single day corrosion and destruction takes place in prestressed concrete member, repairs relatively difficulty.(2) high performance concrete.For coastal reinforced concrete structure, high performance concrete as primary index, and has higher intensity, good operation and volume stability with durability.But high performance concrete requires very high to curing condition, and construction costs is also more high than ordinary concrete.(3) mix the reinforcing bar corrosion inhibitor in.In the material system of reinforcing bar and concrete composition, add the reinforcing bar corrosion inhibitor and can postpone the corrosion rate that reinforcing bar takes place and reduces in corrosion effectively, the reinforcing bar corrosion inhibitor makes rebar surface form the passivating film of complete densification, stops the erosion of chlorion to reinforcing bar effectively.But the selection of corrosion inhibitor type and use must be prudent not only all has in various degree negative effect to concrete time of setting, early strength and later strength as the inorganic nitrite corrosion inhibitor, and has carcinogenicity.(4) epoxy coating reinforcing bar.The epoxy coating reinforcing bar is to smear one deck epoxy resin on the plain bars surface, and the reinforcing bar that can prevent from effectively to be in the adverse circumstances is corroded, thereby improves the durability of engineering structures greatly.But the huge reinforcing bar of quantity does not allow to exist any hidden danger and defective, otherwise will aggravate local reinforcement corrosion, and the coated reinforcement cost is 1.5 times of the plain bars cost in storage, installation and process of binding.(5) cathode protection method.Cathode protection method is exactly to utilize the electrochemical corrosion principle of reinforcing bar, and by artificially applying negative current to reinforcing bar, the reaction that makes the metal surface becomes the reduction reaction that obtains electronics by the oxidation reaction that lost electronics originally, thereby the corrosion of reinforcing bar is no longer taken place.But because the electric current that provides is limited, this method is not suitable for the concrete structure protection that is exposed in the atmosphere.(6) paint spraying protection.Concrete surface is implemented the paint spraying protection, not only can stop or slow down chlorion intrusion in the surrounding medium, and play decorative effect.But must resolve alkali resistance, adhesive power and the light aging resisting problem of coating, and, can aggravate reinforcement corrosion, therefore, also must improve the compactness of concrete itself by match ratio design in case local coating lost efficacy.
(3) summary of the invention
The object of the invention provides a kind of surface coating anticorrosion concrete and job practices.
The technical solution used in the present invention is:
A kind of surface coating anticorrosion concrete, obtain by following method: behind the concrete base layer maintenance 28d, surface at concrete base layer, from inside to outside application moisturecuring epoxy resin primer, GLASS FLAKE, acroleic acid polyurethane finish paint successively obtain described surface coating anticorrosion concrete; Described concrete base layer raw material quality group becomes: (portland cement+flyash): water: water reducing agent: fines: coarse aggregate=1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, based on described portland cement and flyash, described portland cement and flyash weight ratio are 1: 0.25～0.45, described fines is the sand of granularity 0.15～4.75mm, and described coarse aggregate is the rubble of granularity 4.75～19.00mm.Described maintenance can be carried out under outdoor normal temperature, only needs to keep a concrete surface branch with water to get final product, and the standard curing condition of China's ordinary concrete is 20 ± 3 ℃, and relative humidity is more than 90% or maintenance in the water.
Preferred described fines and coarse aggregate adopt Fuller characteristic curve of aggregate (being the maximal density curve) to prepare burden.The maximal density curve theory is to propose a kind of ideal curve by a large amount of tests.Fu Le (Fuller) and his colleague research is thought: particles of aggregates is by diameter, assembled arrangement regularly, and the thickness collocation can obtain the concrete of density maximum, space minimum.The initial research ideal curve is: the following grain composition of fines is oval curve, and coarse aggregate is the straight line tangent with ellipse, by this graduation curve dimerous, may reach maximum density.This curve calculation is more numerous and diverse, improves through many researchs afterwards, proposes " the parabola maximal density ideal curve " simplified.This theory is thought: " concrete characteristic curve of aggregate is more near parabola, and then its density is bigger ".Fuller in 1907 and Thompson propose the percent of pass of aggregate diameters at different levels by the test contrast and the pass between the maximum aggregate diameter is:
P
i＝100(d
i/D
m)
0.5
In the formula: d
i---aggregate diameters at different levels
P
i---the percent of pass of aggregate diameters at different levels;
D
m---the maximum aggregate diameter;
In recent years, people such as Zheng Jianjun further considers minimum aggregate diameter D
0Influence, the Fuller curve is revised, the percent of pass and the minimum aggregate diameter D of aggregate diameters at different levels proposed
0With maximum aggregate diameter D
mBetween quantitative relationship P
i=100[(d
i)
0.5-(D
0)
0.5]/[(D
m)
0.5-(D
0)
0.5], at present, this formula has obtained the approval of domestic and international academia, is widely used in design of concrete.
Coastal antiseptic concrete priming paint has different requirements with steel or ordinary concrete anti-corrosion primer, and the condition that satisfy is: (1) strong adhesion, low viscosity, high osmosis; (2) can construct in wet surface; (3) alkali resistance is good; (4) closed performance is good.Concrete moisture content is the important indicator of antiseptic concrete erosion application; should just can carry out application below 6% by general provision; but coastal concrete situation is special; ebb and the very high air humidity of rising brought very big inconvenience for construction; concrete moisture content can not reach the coating application primary condition of GB regulation; and the adhesive power of priming paint will directly influence whole adhesive force of coatings and application life, select the moisturecuring epoxy resin coating for this reason.The moisturecuring epoxy resin coating not only has the good penetration performance, may penetrate into layer of concrete inside, and has outstanding alkaline resistance properties and closed performance, the concrete surface of humidity is had higher adaptability.
GLASS FLAKE is a kind of bi-component thick paste type epoxy resin emulsion paint, contains glass flake, to strengthen Corrosion Protection, to improve the recoat performance after wearing out.Supporting use priming paint, intermediate coat or finish paint, extremely strong protective action can be provided in the high-performance coating auxiliary plan, be fit to various strong corrosive environments, paint film is hard, have excellent permeability resistance, abrasion resistance, good adhesive power, resistant to chemical media corrosivity, heat resistance etc.
A kind of bi-component acrylic polyurethane coating of acrylic polyurethane coating, good decorative property is better than conventional polyurethanes, rubber-like, vinyl coating.Can be used for the coating of steel work and the maintenance of original base material, be fit to multiple environment, good weatherability, paint film is hard, and adhesive power is good, and light is plentiful.Performances such as wear-resisting preferably, sour, water, oil, heat are arranged.
The present invention adopts low water-cement ratio and Fuller graded aggregate, improve the aggregate volume rate, reduce cement consumption and cement stone volume fraction, add a certain amount of flyash again, absorb in the cement hydration process calcium hydroxide in the aggregate surface enrichment, effectively reduce the interfacial transition zone between aggregate and the cement stone, improve concrete density.
Surface at concrete base layer, application successively from inside to outside: 1 layer thickness is that the moisturecuring epoxy resin primer of 20～30 μ m, GLASS FLAKE, 2 layer thicknesses that 2 layer thicknesses are 40～50 μ m are the acroleic acid polyurethane finish paint of 30～40 μ m, obtains described surface coating anticorrosion concrete.
The invention still further relates to the job practices of described surface coating anticorrosion concrete, described method comprises: press in (portland cement+flyash): water: water reducing agent: fines: the mass ratio allotment of coarse aggregate=1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, described portland cement and flyash weight ratio are 1: 0.25～0.45, behind the concrete base layer maintenance 28d that obtains, the concrete base laminar surface is handled, application thickness is the moisturecuring epoxy resin primer of 20～30 μ m, flat surface behind the 12h, application thickness is the GLASS FLAKE of 40～50 μ m, application thickness is the acroleic acid polyurethane finish paint of 30～50 μ m behind the 24h, obtains described surface coating anticorrosion concrete.
Preferred concrete mix: (portland cement+flyash): water: water reducing agent: fines: the coarse aggregate mass ratio is 1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, and described method is as follows:
(1) coarse-fine aggregate of adding formula ratio in the mixer, adding suitable quantity of water, stirring 30～60s make aggregate absorb water to saturation plane and do;
(2) flyash of adding formula ratio stirs 30～60s;
(3) portland cement of adding formula ratio stirs 30～60s;
(4) add the water (be net duty of water, for the total water amount deducts water supply volume after the water yield that coarse-fine aggregate absorbs, be about 0.4～0.5 times of (portland cement+flyash) quality) of water reducing agent and surplus herein, stirring 60～120s must concrete base layer;
(5) behind the concrete base layer maintenance 28d, the surface is handled, application 1 layer thickness is the moisturecuring epoxy resin primer of 20～30 μ m;
(6) flat surface behind the 12h, application 1 layer thickness is the GLASS FLAKE of 40～50 μ m; Flat surface is to add flat honeycomb, pitted skin, hole, sand holes and pit at concrete base laminar surface blade coating epoxy putty;
(7) behind the 24h again application 1 layer thickness be the GLASS FLAKE of 40～50 μ m;
(8) application 1 layer thickness is the acroleic acid polyurethane finish paint of 30～50 μ m behind the 24h;
(9) behind the 24h again application 1 layer thickness be the acroleic acid polyurethane finish paint of 30～50 μ m, obtain described surface coating anticorrosion concrete.
Surface coating anticorrosion concrete provided by the invention has higher Corrosion Protection, and the one-time surface application reaches 15～20y concrete application life.
(4) specific embodiment
The present invention is described further below in conjunction with specific embodiment, but protection scope of the present invention is not limited in this:
Embodiment 1:
Concrete mix: (70% cement+30% flyash): water (net duty of water, down together): water reducing agent: fines: coarse aggregate=1: 0.40: 0.011: 3.22: 3.92
Cement: P042.5 Portland cement 4.10kg;
Water: tap water 2.34kg+1.11kg;
Coarse aggregate: natural rubble, water absorption rate 3.64%, the aggregate 9.50kg of grating 4.75～9.50mm, the aggregate 9.66kg of grating 9.05～16.00mm, the aggregate 3.78kg of grating 16.00～19.00mm;
Fines: natural sand, water absorption rate 1.48%, the sand 1.69kg of grating 0.15～0.30mm, the sand 2.39kg of grating 0.30～0.60mm, the sand 3.28kg of grating 0.60～1.18mm, the sand 4.74kg of grating 1.18～2.36mm, the sand 6.77kg of grating 2.36～4.75mm;
Flyash: II level flyash (he urban construction builds Materials Co., Ltd Guangzhou) 1.76kg;
Water reducing agent: SN-II (Changxing, Zhejiang Province county refractory raw material company) 0.062kg;
Processing step:
The weighing coarse-fine aggregate drops into mixer---adds the 1.11kg tap water and stirs 50s that------add 4.10kg cement and stir 60s---adds after 0.062kg water reducing agent and 2.34kg water are mixed thoroughly again and continue to stir 120s to add 1.76kg flyash 60s.
The 2.34kg tap water that adds in the above-mentioned match ratio is a net duty of water, and the 1.11kg tap water is for pressing the aggregate water absorption that the coarse-fine aggregate water absorption rate calculates, and is identical therewith among other embodiment.
Concrete is (20 ± 3 ℃, relative humidity is more than 90%) maintenance 28d under standard conditions---to concrete base layer handle and surface finish---is the 881-S01 moisturecuring epoxy resin primer (Beijing Hangcai Baimu New Materials Technology And Engineering Co., Ltd) of 30 μ m at external coating one layer thickness---12h after the blade coating epoxy putty to add flat honeycomb, pitted skin, hole, sand holes and pit---application one layer thickness be the epoxy glass flake of 50 μ m heavy anticorrosion in the middle of coating (Changzhou space-time chemical anticorrosion material factory)---behind the 24h again application one layer thickness be the epoxy glass flake of 50 μ m heavy anticorrosion in the middle of coating---application one layer thickness is the acrylic acid polyurethane finish paint (Tianjin time chemistry painting industry Co., Ltd) of 40 μ m behind the 24h---behind the 24h again application one layer thickness be the acrylic acid polyurethane finish paint of 40 μ m.
Effect: according to the conclusion of the U.S. to the commerical test of the concrete sheath coat protection time limit, the one-time surface application reaches 15～20y concrete application life.
Embodiment 2:
Concrete mix: (75% cement+25% flyash): water: water reducing agent: fines: coarse aggregate=1: 0.45: 0.009: 3.13: 3.81
Cement: PO42.5 Portland cement 4.43kg;
Water: tap water 2.66kg+1.09kg;
Coarse aggregate: natural rubble, water absorption rate 3.64%, the aggregate 9.32kg of grating 4.75～9.50mm, the aggregate 9.48kg of grating 9.05～16.00mm, the aggregate 3.71kg of grating 16.00～19.00mm;
Fines: natural sand, water absorption rate 1.48%, the sand 1.66kg of grating 0.15～0.30mm, the sand 2.34kg of grating 0.30～0.60mm, the sand 3.22kg of grating 0.60～1.18mm, the sand 4.65kg of grating 1.18～2.36mm, the sand 6.64kg of grating 2.36～4.75mm;
Flyash: II level flyash 1.48kg;
Water reducing agent: SN-II 0.053kg;
Process conditions:
The weighing coarse-fine aggregate drops into mixer---adds the 1.09kg tap water and stirs 40s that------add 4.43kg cement and stir 50s---adds after 0.053kg water reducing agent and 2.66kg water are mixed thoroughly again and continue to stir 90s to add 1.48kg flyash 50s.
Concrete is (20 ± 3 ℃, relative humidity is more than 90%) maintenance 28d under standard conditions---to concrete base layer handle and surface finish---is the 881-S01 moisturecuring epoxy resin primer of 25 μ m at external coating one layer thickness---12h after the blade coating epoxy putty to add flat honeycomb, pitted skin, hole, sand holes and pit---application one layer thickness be the epoxy glass flake of 45 μ m heavy anticorrosion in the middle of coating---behind the 24h again application one layer thickness be the epoxy glass flake of 45 μ m heavy anticorrosion in the middle of coating---behind the 24h application one layer thickness be behind acrylic acid polyurethane finish paint-24h of 35 μ m again application one layer thickness be the acrylic acid polyurethane finish paint of 35 μ m.
Effect: according to the conclusion of the U.S. to the commerical test of the concrete sheath coat protection time limit, the one-time surface application reaches 15～20y concrete application life.
Embodiment 3:
Concrete mix: (80% cement+20% flyash): water: water reducing agent: fines: coarse aggregate=1: 0.50: 0.008: 3.05: 3.71
Cement: PO42.5 Portland cement 4.76kg;
Water: tap water 2.98kg+1.07kg;
Coarse aggregate: natural rubble, water absorption rate 3.64%, the aggregate 9.14kg of grating 4.75～9.50mm, the aggregate 9.29kg of grating 9.05～16.00mm, the aggregate 3.63kg of grating 16.00～19.00mm
Fines: natural sand, water absorption rate 1.48%, the sand 1.62kg of grating 0.15～0.30mm, the sand 2.30kg of grating 0.30～0.60mm, the sand 3.15kg of grating 0.60～1.18mm, the sand 4.55kg of grating 1.18～2.36mm, the sand 6.51kg of grating 2.36～4.75mm
Flyash: II level flyash 1.19kg;
Water reducing agent: SN-II 0.048kg;
Process conditions:
The weighing coarse-fine aggregate drops into mixer---adds the 1.07kg tap water and stirs 40s that------add 4.76kg cement and stir 40s---adds after 0.048kg water reducing agent and 2.98kg water are mixed thoroughly again and continue to stir 70s to add 1.19kg flyash 40s.
Concrete is (20 ± 3 ℃, relative humidity is more than 90%) maintenance 28d under standard conditions---to concrete base layer handle and surface finish---is the 881-S01 moisturecuring epoxy resin primer of 20 μ m at external coating one layer thickness---12h after the blade coating epoxy putty to add flat honeycomb, pitted skin, hole, sand holes and pit---application one layer thickness be the epoxy glass flake of 40 μ m heavy anticorrosion in the middle of coating---behind the 24h again application one layer thickness be the epoxy glass flake of 40 μ m heavy anticorrosion in the middle of coating---application one layer thickness is the acrylic acid polyurethane finish paint of 30 μ m behind the 24h---behind the 24h again application one layer thickness be the acrylic acid polyurethane finish paint of 30 μ m.
Effect: according to the conclusion of the U.S. to the commerical test of the concrete sheath coat protection time limit, the one-time surface application reaches 15～20y concrete application life.
Claims (5)
1. surface coating anticorrosion concrete, obtain by following method: behind the concrete base layer maintenance 28d, surface at concrete base layer, from inside to outside application moisturecuring epoxy resin primer, GLASS FLAKE, acroleic acid polyurethane finish paint successively obtain described surface coating anticorrosion concrete; Described concrete base layer raw material quality group becomes: (portland cement+flyash): water: water reducing agent: fines: coarse aggregate=1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, based on described portland cement and flyash, described portland cement and flyash mass ratio are 1: 0.25～0.45, described fines is the sand of granularity 0.15～4.75mm, and described coarse aggregate is the rubble of granularity 4.75～19.00mm.
2. surface coating anticorrosion concrete as claimed in claim 2, it is characterized in that surface at concrete base layer, application successively from inside to outside: 1 layer thickness is that the moisturecuring epoxy resin primer of 20～30 μ m, GLASS FLAKE, 2 layer thicknesses that 2 layer thicknesses are 40～50 μ m are the acroleic acid polyurethane finish paint of 30～40 μ m, obtains described surface coating anticorrosion concrete.
3. the job practices of a surface coating anticorrosion concrete as claimed in claim 1, described method comprises: press in (portland cement+flyash): water: water reducing agent: fines: the mass ratio allotment of coarse aggregate=1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, behind the concrete base layer standard curing 28d that obtains, the concrete base laminar surface is handled, application thickness is the moisturecuring epoxy resin primer of 20～30 μ m, flat surface behind the 12h, application thickness is the GLASS FLAKE of 40～50 μ m, application thickness is the acroleic acid polyurethane finish paint of 30～50 μ m behind the 24h, obtains described surface coating anticorrosion concrete.
4. method as claimed in claim 3 is characterized in that: (portland cement+flyash): water: water reducing agent: fines: the coarse aggregate mass ratio is 1: 0.5～0.8: 0.008～0.012: 3.0～3.4: 3.6～4.0, and described method is as follows:
(1) adds the coarse-fine aggregate of formula ratio in the mixer, add suitable quantity of water, stirring 30～60s, that aggregate is absorbed water to is saturated;
(2) flyash of adding formula ratio stirs 30～60s;
(3) portland cement of adding formula ratio stirs 30～60s;
(4) water of adding water reducing agent and surplus stirs 60～120s, gets concrete base layer;
(5) behind the concrete base layer maintenance 28d, the surface is handled, application 1 layer thickness is the moisturecuring epoxy resin primer of 20～30 μ m;
(6) flat surface behind the 12h, application 1 layer thickness application thickness is the GLASS FLAKE of 40～50 μ m again;
(7) behind the 24h again application 1 layer thickness application thickness be the GLASS FLAKE of 40～50 μ m;
(8) application 1 layer thickness is the acroleic acid polyurethane finish paint of 30～50 μ m behind the 24h;
(9) behind the 24h again application 1 layer thickness be the acroleic acid polyurethane finish paint of 30～50 μ m, obtain described surface coating anticorrosion concrete.
5. method as claimed in claim 4 is characterized in that the described flat surface of described step (6) is: the concrete base laminar surface at the blade coating epoxy putty to add flat honeycomb, pitted skin, hole, sand holes and pit.
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| CN107324846A (en) * | 2017-07-07 | 2017-11-07 | 重庆百信实业有限公司 | The coating process and concrete PC beams of concrete PC beam anti-skid wearable coatings |
| CN107617549A (en) * | 2017-09-28 | 2018-01-23 | 佛山华盾人防工程有限公司 | A kind of anticorrosive coating technique of reinforced concrete closed guard gate |
| CN108999074A (en) * | 2018-07-21 | 2018-12-14 | 吴秀华 | A kind of anticorrosion concrete structure of bridge spanning the sea |
| CN109180089A (en) * | 2018-11-16 | 2019-01-11 | 连云港市建筑设计研究院有限责任公司 | A kind of concrete for making method with anti-corrosion capability |
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2008
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102383619A (en) * | 2011-10-16 | 2012-03-21 | 江苏中矿大正表面工程技术有限公司 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
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| CN107324846B (en) * | 2017-07-07 | 2019-11-05 | 重庆百信实业有限公司 | The coating process and concrete PC beam of concrete PC beam anti-skid wearable coating |
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| CN108999074A (en) * | 2018-07-21 | 2018-12-14 | 吴秀华 | A kind of anticorrosion concrete structure of bridge spanning the sea |
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