CN104878743A - Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method - Google Patents
Prestressed reinforced concrete pile foundation anticorrosive material for oceaneering and its construction method Download PDFInfo
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- CN104878743A CN104878743A CN201510132000.1A CN201510132000A CN104878743A CN 104878743 A CN104878743 A CN 104878743A CN 201510132000 A CN201510132000 A CN 201510132000A CN 104878743 A CN104878743 A CN 104878743A
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- 239000010941 cobalt Substances 0.000 claims description 11
- 229910017052 cobalt Inorganic materials 0.000 claims description 11
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- 239000000853 adhesive Substances 0.000 claims description 9
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- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 8
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 7
- 229920006267 polyester film Polymers 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 6
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
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- 238000002156 mixing Methods 0.000 claims description 3
- HEJCZAMFVMNFLC-UHFFFAOYSA-N 10-oxo-10-(2,2,6,6-tetramethylpiperidin-4-yl)oxydecanoic acid Chemical compound CC1(C)CC(OC(=O)CCCCCCCCC(O)=O)CC(C)(C)N1 HEJCZAMFVMNFLC-UHFFFAOYSA-N 0.000 claims description 2
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 4
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- Piles And Underground Anchors (AREA)
Abstract
The invention provides a prestressed reinforced concrete pile foundation anticorrosive material for oceaneering, comprising, by weight, 40% to 60% of resin, 0.3% to 1% of pigment, 1% to 3% of thixotropic agent, 0.3% to 0.7% of ultraviolet absorption agent, 1% to 2.5% of initiator, 0.1% to 1.5% of accelerant and 35% to 55% of glass fiber cloth. The invention further provides a construction method of the prestressed reinforced concrete pile foundation anticorrosive material for oceaneering. The anticorrosive material has the advantages that the construction is convenient, the required thickness of oceaneering pile foundation anticorrosive coating can be achieved only by one-time construction, the construction period is short, and environmental friendliness is allowed; the strength of bonding with the surface of a pile foundation is high, peeling rarely occurs, the corrosion resistance is excellent, the durability is high, and the requirement that chloride penetration resistance of the pile foundation in marine environment lasts for 50 years can be ensured.
Description
Technical field
The invention belongs to ocean engineering pile foundation technical field of anticorrosion, relate to a kind of ocean engineering pile foundation anti-corrosion material and construction method thereof, be specifically related to a kind of high-durability ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material and construction method thereof.
Background technology
At present, conventional in ocean engineering prestressed reinforced concrete pile foundation mainly contains Big Pipe Pile and PHC pile tube.Due to, the pile foundation durability that in seawater, Chloride Attack causes declines, the problem of pile foundation shortening in application life receives much attention in ocean engineering circle.As everyone knows, chlorion in seawater is strong corrosive material, directly be exposed to the prestressed reinforced concrete Big Pipe Pile in seawater and PHC pile tube, when salinity penetrate into concrete reach rebar surface time, corrosion of steel bar can be caused, reinforcing bar volume expansion, makes concrete spalling, peels off, causes structural deterioration.Especially the pile foundation being in tidal range section is directly in the most serious region of seawater corrosion, is the position that total subjects to erosion damage most, and pile foundation durability also becomes the Pinch technology in restriction large ocean engineering structures application life.
Prior art adopts high performance concrete, corrosion inhibitor and increase protective layer thickness etc. to improve the durability of Big Pipe Pile and PHC pile tube from the measure of concrete body material usually.Adopt the above-mentioned technical measures from concrete material body, can ensure that the service life of prestressed reinforced concrete pile foundation reaches 50 years.But what require along with workmanship improves constantly, the design of some large ocean engineerings proposes the even higher requirement of 100 years design reference periods, only from concrete body material, for the durability limited use improving pile foundation structure, high-durability designing requirement can not be met.In order to ensure the pile foundation service life of 100 years, additional anti-corrosion mode must be adopted, and additional anti-corrosion mode is on active service in marine environment in 50 years and chloride permeability should not be occurred.Wherein, improve the durability of prestressed reinforced concrete pile foundation, the reenlist life-span, the most frequently used, effective additional anti-corrosion mode was at pile foundation external coating anticorrosive coating, formed certain thickness corrosion-inhibiting coating, pile foundation and seawater are kept apart, from chloride ion corrosion.
The anticorrosive paint that pre existing stress steel bar concrete pile plinth is conventional mainly contains acrylic coating, polyurethanes coating and modified epoxy class coating etc.According to the regulation of China's relevant criterion and specification, the chloride-penetration resistance life-span of 500 μm of thick these coatings is generally 10 ~ 20 years, can not meet high-durability requirement for anticorrosion.And face coat generally needs the steps such as primer coating, intermediate coat and finish paint, and can carry out lower one deck coating construction after requiring every layer of dry solidification, construction is complicated; Simultaneously coating is constructed thinner thickness together, is about 50 ~ 100 μm, needs multiple tracks to construct and can reach designing requirement, long construction period; The resistance to UV aging of coating and poor mechanical property, easily produce stress cracking and cause coating shedding, lose protection effect.
Therefore, for the pile foundation anti-corrosion measure had 50 years and above chloride-penetration resistance requires, if adopt the protection method of erosion shield, need during one's term of military service repeatedly to keep in repair in pile foundation, guarantee pile foundation is not destroyed by seawater corrosion.The maintenance more complicated of coating, and maintenance cost is high, the maintenance step of coating comprises formerly catedly to be rooted out, the surfacing of pile foundation, is coated with the coating etc. refreshed.During maintenance, coating before dry solidification can not with contact with sea water, otherwise coating cannot dry solidification, and because coating mostly needs multiple tracks to construct, field maintenance almost becomes impossible mission.
So, present hope proposes a kind of new high-durability ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material and construction method thereof, requiring short construction period, mechanical strength is high, resistance to corrosion seawater good, there is not chloride permeability in 50 years in guarantee pile foundation.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material and construction method thereof, by adopting a kind of high-durability ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material and construction method thereof, for solving the defect of prior art floating coat anti-corrosion measure, and the technical requirements of 100 year projected life of ocean engineering can be realized.
For achieving the above object and other relevant objects, one aspect of the present invention provides a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material, by weight percentage, comprises following component:
Preferably, described resin is epoxy vinyl ester resin.
More preferably, described epoxy vinyl ester resin is selected from any one in bisphenol type epoxy vinyl ester resin MFE-2, bisphenol type epoxy vinyl ester resin MFE-711.Described epoxy vinyl ester resin can react solidification at normal temperatures with methyl ethyl ketone peroxide and cobalt iso-octoate, and wherein, methyl ethyl ketone peroxide and cobalt iso-octoate redox reaction can occur, and produces free radical, and then initiation resin carries out Raolical polymerizable.
Preferably, described pigment is selected from any one in copper-chrome black, carbon black, iron oxide black.
Preferably, described thixotropic agent is selected from any one in aerosil, polyamide wax, organobentonite.
Preferably, described ultra-violet absorber is selected from any one in two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, Octabenzone.
Preferably, described initator is methyl ethyl ketone peroxide.
More preferably, the active o content of described methyl ethyl ketone peroxide is 8.0 ~ 9.0wt%.
Preferably, described accelerator is cobalt iso-octoate.
More preferably, the available cobalt of described cobalt iso-octoate is 0.5 ~ 1.0wt%.
Preferably, described glass fabric is selected from any one in medium alkali fiber cloth CWR400D, alkali-free glass fiber cloth EWR400.
More preferably, described glass fabric possesses following feature: grammes per square metre is not less than 350g/m
2, warp-wise ultimate strength is not less than 1400N/2.5cm, and broadwise ultimate strength is not less than 1200N/2.5cm.
Second aspect present invention provides the application of a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material in ocean engineering pile foundation is anticorrosion.
Third aspect present invention provides a kind of construction method of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material, comprises the steps:
1) removing surface of stake: the spot removing prestressed reinforced concrete stake surface, uses resin-bonded mastic at stake surface smear Post RDBMS, stand-by;
Preferably, described spot is greasy dirt and other foul, bleeding cement and other loose material that prestressed reinforced concrete stake surface needs coated district.
Preferably, each component of described resin-bonded mastic and weight portion are: epoxy vinyl ester resin 100 parts, methyl ethyl ketone peroxide 1.5 parts, cobalt iso-octoate 0.5 part, cement 100 parts.
More preferably, described epoxy vinyl ester resin is selected from any one in bisphenol type epoxy vinyl ester resin MFE-2, bisphenol type epoxy vinyl ester resin MFE-711.
More preferably, the active o content of described methyl ethyl ketone peroxide is 8.0 ~ 9.0wt%.
More preferably, the available cobalt of described cobalt iso-octoate is 0.5 ~ 1.0wt%.
More preferably, described cement to be strength grade the be Portland cement of 42.5 grades.
Preferably, at stake surface smear, described resin-bonded mastic refers to that use resin-bonded mastic fills up, floating stake surface blemishes, make a surfacing.
Preferably, described hardening time is 12-24h.More preferably, described hardening time is 24h.
2) preparation of resin adhesive liquid: get pigment, thixotropic agent, ultra-violet absorber, accelerator by proportioning and add in resin successively and stir, then add initator while stirring, to be mixed evenly after leave standstill;
Preferably, described mixing time is respectively 1-2min.
Preferably, in whole glue process for preparation, described stir speed (S.S.) is 800 ~ 1000r/min.
Preferably, described time of repose is 3-5min.More preferably, described time of repose is 5min.
3) Corrosion Protection of Fiber Reinforced Plastics floor is coated: in step 1) stake surface after cleaning needs coated district even brushing one deck step 2) resin adhesive liquid prepared, be wound around layer of glass cloth again, repeatedly after above-mentioned steps, in outermost layer even brushing one deck step 2 again) resin adhesive liquid prepared, be then wound around one deck polyester film outward at this layer;
Preferably, should strain when described glass fabric is wound around, and use scraper plate to be struck off by glass fabric, after being wound around, use froth breaking roller to carry out roll-in.Effectively can get rid of the visible bubble in bubble between glass fabric and resin boundary surface.
Preferably, the number of times of described repetition step is 4 times.
Preferably, after described polyester film is wound around, scraper plate is used to be struck off by polyester film.Effectively can get rid of the visible bubble in bubble between polyester film and resin boundary surface.
4) by surface through step 3) coated after prestressed reinforced concrete stake place a period of time, can use.
Preferably, step 4) in, described prestressed reinforced concrete stake carries out carrying operation after placing 12-24h.
More preferably, described prestressed reinforced concrete stake carries out carrying operation after placing 24h.
Preferably, step 4) in, described prestressed reinforced concrete stake carries out piling work after placing and being more than or equal to 7 days.
More preferably, described prestressed reinforced concrete stake is placed after 7 days and is carried out piling work.
As mentioned above, a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material of the present invention and construction method thereof, first, by adopting best component formula, and adopt the construction method of optimal conditions, molding mode is flexible, construction is simple, once construction can reach the thickness of designing requirement, coated thickness reaches 2.0mm, and short construction period is environmentally friendly.Secondly, the mechanical strength of this anti-corrosion material is high, not easily produces stress cracking, and its bending strength is not less than 450MPa; High with pile foundation surface adhesion strength, difficult drop-off, the hardness Ageing characterized as interface binding intensity is not less than 3.3MPa.Finally, the antiseptic property of this anti-corrosion material is excellent, and chloride diffusion coefficient reaches 2.50 × 10
-11cm
2/ below s, and the requirement that can meet the chloride-penetration resistance life-span of more than 50 years in marine environment, have high-durability, can ensure pile foundation in 50 years not by seawater corrosion.Therefore, the high-durability ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material that the present invention proposes and construction method thereof have huge advantage compared with coating antiseptic measure, are with a wide range of applications at ocean engineering pile foundation corrosion-resistant field.
Accompanying drawing explanation
Fig. 1 is shown as the construction technology process schematic diagram of a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material of the present invention.
Fig. 2 is shown as one side diffusing qualities rate of change and the relation schematic diagram of time of a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material sample of the present invention.
Fig. 3 is shown as mass change and the time relationship schematic diagram of a kind of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material sample of the present invention.
Detailed description of the invention
Set forth the present invention further below in conjunction with specific embodiment, should be understood that these embodiments are only not used in for illustration of the present invention and limit the scope of the invention.
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this manual can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by detailed description of the invention different in addition, and the every details in this manual also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
The experiment material used in following examples all can be bought on market.
Embodiment 1 ~ embodiment 3
1, experimental technique
Remove greasy dirt and other foul, bleeding cement and other loose material that clean prestressed reinforced concrete pipe pile surface needs coated district.Then, use resin-bonded mastic fills up, floating stake surface blemishes, makes a surfacing.Wherein, each component of resin-bonded mastic and weight portion are: epoxy vinyl ester resin 100 parts, methyl ethyl ketone peroxide 1.5 parts, cobalt iso-octoate 0.5 part, cement 100 parts.
After the preferred 24h of resin-bonded mastic solidification 12-24h, start coated with glass fibre reinforced plastics.Meanwhile, get pigment, thixotropic agent, ultra-violet absorber, accelerator by proportioning and add in resin successively and stir, then add initator while stirring, to be mixed evenly after leave standstill the preferred 5min of 3-5min, obtain resin adhesive liquid.In whole glue process for preparation, mixing time is respectively 1-2min, and described stir speed (S.S.) is 800 ~ 1000r/min.
According to hand pasting forming mode, first need coated district even brushing one deck resin adhesive liquid on the stake surface after cleaning, be wound around layer of glass cloth again, should strain when being wound around glass fabric, and use scraper plate to be struck off by glass fabric, after winding completes, use froth breaking roller to carry out roll-in, effectively can get rid of the visible bubble in bubble between glass fabric and resin boundary surface.Repeatedly after above-mentioned steps, in outermost layer even brushing one deck resin adhesive liquid again, be then wound around one deck polyester film outward at this layer, and strike off with scraper plate, effectively get rid of the visible bubble in bubble between polyester film and resin boundary surface.Wherein, the number of times repeating step is 4 times, thus forms the Corrosion Protection of Fiber Reinforced Plastics layer of five layers of resin four-layer glass cloth.
Can carrying operation be carried out after the preferred 24h of 12-24h is placed in the prestressed reinforced concrete stake of surface after coated process, the prestressed reinforced concrete stake of surface after coated process be placed after being more than or equal to 7 days and can carry out piling work.Wherein, the composition and the percentage by weight that form the raw material components of the anti-corrosion material of Corrosion Protection of Fiber Reinforced Plastics layer are as shown in table 1.
Ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material formula table in table 1 embodiment 1-3
2, chloride-penetration resistance life test and computational methods
2.1 glass fiber reinforced plastic chloride-penetration resistance Life Calculating Methods
The anti-corrosion material proposed in the present invention is the glass fiber reinforced plastics composite material of antiseptic property excellence.Chlorion in seawater meets Fick second diffusion law to the diffusion of glass fiber reinforced plastics composite material inside:
In formula, C---dispersive medium concentration;
T---diffusion time;
---by the concentration gradient in surface along orthogonal surface direction;
D---diffusion coefficient.
When D and C has nothing to do, be desirable disperse state:
We suppose that the thickness of glass fiber reinforced plastic topping is for infinitely great, then primary condition and fringe conditions are:
C(x，t)＝C
0，；
C(0，t)＝Cs；
C(∞，t)＝C
0；
In formula, the thickness of x---glass fiber reinforced plastic, dispersal direction is positive direction, x >=0;
T---diffusion time, s;
C
0---the initial concentration of the inner chlorion of glass fiber reinforced plastic, %;
Cs---glass fiber reinforced plastic surface chlorine ion concentration, %;
According to Boundary Condition for Solving partial differential equation, result is:
In formula, C---the chlorine ion concentration at glass fiber reinforced plastic inner x place during time t, %;
for Gauss error function.
be a Normalized Ratio, its span is [0,1], can round the average 1/2 of a diffusion process to be described in the average diffusion process occurred in whole diffusion process, also namely:
According to the character of Gauss error function, as η ﹤ 0.6:
η≈erfη (1-5)
So,
That is:
This formula obtains under hypothesis glass fiber reinforced plastic coating thickness is the condition of infinite thickness, in fact the thickness of glass fiber reinforced plastic clad is not unlimited, but for the chlorion in diffusion, the thickness of clad does not affect the dispersal behavior of chlorion, the chlorion spread in the glass fiber reinforced plastic of infinite thickness is taken out in a certain concrete thickness, and the dispersal behavior of chlorion is impregnable.That is, this formula is also the glass fiber reinforced plastic clad being applicable to finite thickness.
Diffusion coefficient by glass fiber reinforced plastic mass change in the seawater, can be calculated as follows:
In formula, x is the thickness of glass fiber reinforced plastic sample;
M
∞for the biggest quality rate of change of glass fiber reinforced plastic sample, %;
M
1for glass fiber reinforced plastic sample t
1the mass change of time, %;
M
2for glass fiber reinforced plastic sample t
2the mass change of time, %.
for mass change linear fit slope of a curve, by the diffusion coefficient calculated, the chloride-penetration resistance life-span of glass fiber reinforced plastic can be calculated according to formula (1-7).
2.2 chloride diffusion coefficient computational methods
The Corrosion Protection of Fiber Reinforced Plastics layer being coated on pile foundation surface is under arms in process, and only external surface and contact with sea water, inner surface bonds with dry pile foundation face seal, and seawater is unidirectional to the diffusion of glass fiber reinforced plastic inside.For calculating one direction diffusion coefficient by glass fiber reinforced plastic mass change in the seawater, needing to carry out the glass fiber reinforced plastic sample mass change that one side soaks in the seawater and testing.
2.2.1 test method
The test of glass fiber reinforced plastic sample mass rate of change is undertaken by standard GB/T/T1462-2005 " glass fiber reinforced plastics water absorbing properties experimental technique ", and test(ing) medium is 3.5% mass fraction NaCl solution, and test temperature is 25 DEG C.Mass change W
tbe calculated as follows:
In formula, M
0for the initial mass of glass fiber reinforced plastic sample, M
tfor trying the quality of glass fiber reinforced plastic sample when soak time is t.
Glass fiber reinforced plastic sample one side diffusing qualities rate of change is tested: after coated with water-fast epoxy resin for glass fiber reinforced plastic sample all the other 5 faces except upper surface, carry out soak test.
Glass fiber reinforced plastic sample biggest quality rate of change is tested: all not coated water-fast epoxy resin in glass fiber reinforced plastic sample 6 faces is directly put into solution and soaked, rendering quality rate of change and time (s
1/2) relation curve, curve peak is glass fiber reinforced plastic sample biggest quality rate of change.
2.2.2 water absorption rate result
For the anti-corrosion material that embodiment in table 13 is prepared, glass fiber reinforced plastic sample is one side diffusing qualities rate of change and time (s in 3.5% mass fraction NaCl solution
1/2) relation as shown in Figure 2, biggest quality change rate curve and time (s
1/2) relation as shown in Figure 3.
2.3 the chloride-penetration resistance life-span calculates
By the biggest quality rate of change data of curve shown in slope of a curve shown in Fig. 2, Fig. 3, the diffusion coefficient of anti-corrosion material in embodiment 3 is calculated according to above-mentioned formula (1-8), bring above-mentioned formula (1-7) into, calculate the chloride-penetration resistance life-span of anti-corrosion material in embodiment 3, and adopt the coated thickness of vernier caliper measurement; Concrete data result is in table 2.
The diffusion coefficient of table 2 anti-corrosion material and theoretical service life
From table 2, in the present invention in embodiment 3 the chloride-penetration resistance life-span of anti-corrosion material more than 50 years, there is higher durability, the requirement of offshore engineering structure to 50 years chloride-penetration resistance life-spans of anti-corrosion material can be met, be with a wide range of applications at high-durability ocean engineering prestressed reinforced concrete pile foundation corrosion-resistant field.
3, the performance test results
By embodiment 1-3 proportioning in table 1, according to the ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material that above-mentioned construction sequence obtains respectively, after solidifying 7 days, strip aliquot and carry out performance test.According to the bending strength of standard GB/T/T 1449-2005 " fibre reinforced plastics bending property test method " test sample; According to the hardness Ageing of annex F test sample in standard GB/T/T 50367-2006 " concrete structure reinforcement design specifications "; Adopt the coated thickness of vernier caliper measurement; And according to the chloride-penetration resistance life-span (Fick second diffusion law) providing computational methods to calculate sample in aforesaid clause 2 and chloride diffusion coefficient; Correlated performance data the results are shown in Table 3.
The performance of table 3 anti-corrosion material and chloride-penetration resistance life-span
From table 3, it is simple that the high-durability anti-corrosion material that the present invention proposes and construction method thereof have construction, and once construction can reach the coated thickness 2.0mm of designing requirement.The mechanical strength of this anti-corrosion material is high, and bending strength is not less than 450MPa; High with pile foundation surface adhesion strength, the hardness Ageing characterized as interface binding intensity is not less than 3.3MPa.The antiseptic property of this anti-corrosion material is excellent, and chloride diffusion coefficient reaches 2.50 × 10
-11cm
2/ below s, the chloride-penetration resistance life-span, all more than 50 years, has higher durability, can meet the performance requirement of offshore engineering structure to anti-corrosion material, and high-durability ocean engineering prestressed reinforced concrete pile foundation corrosion-resistant field is with a wide range of applications.
Embodiment 4 ~ embodiment 6
Adopt as experimental technique identical in above-described embodiment 1 ~ embodiment 3, wherein, the composition and the percentage by weight that form the raw material components of the anti-corrosion material of Corrosion Protection of Fiber Reinforced Plastics layer are as shown in table 4.
Ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material formula table in table 4 embodiment 4-6
The ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material that in employing table 4 prepared by compositing formula, there is the results of property close with table 3 in embodiment 1 ~ embodiment 3, also there is the advantage that mechanical strength is high, interface binding intensity is high, antiseptic property is good, the chloride-penetration resistance life-span of anti-corrosion material was more than 50 years, there is higher durability, the performance requirement of offshore engineering structure to anti-corrosion material can be met.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. an ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material, by weight percentage, comprises following component:
2. ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 1, it is characterized in that, described resin is epoxy vinyl ester resin.
3. ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 1, is characterized in that, described pigment be selected from copper-chrome black, carbon black, iron oxide black any one; Described thixotropic agent be selected from aerosil, polyamide wax, organobentonite any one.
4. ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 1, it is characterized in that, described ultra-violet absorber is selected from two (2,2,6,6-tetramethyl-4-piperidyl) sebacate, any one in Octabenzone.
5. ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 1, it is characterized in that, described initator is methyl ethyl ketone peroxide; Described accelerator is cobalt iso-octoate.
6. ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 1, is characterized in that, described glass fabric be selected from medium alkali fiber cloth CWR400D, alkali-free glass fiber cloth EWR400 any one.
7. according to the arbitrary described application of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material in ocean engineering pile foundation is anticorrosion of claim 1-6.
8., according to the construction method of the arbitrary described ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material of claim 1-6, comprise the steps:
1) removing surface of stake: the spot removing prestressed reinforced concrete stake surface, uses resin-bonded mastic at stake surface smear Post RDBMS, stand-by;
2) preparation of resin adhesive liquid: get pigment, thixotropic agent, ultra-violet absorber, accelerator by proportioning and add in resin successively and stir, then add initator while stirring, to be mixed evenly after leave standstill;
3) Corrosion Protection of Fiber Reinforced Plastics floor is coated: in step 1) stake surface after cleaning needs coated district even brushing one deck step 2) resin adhesive liquid prepared, be wound around layer of glass cloth again, repeatedly after above-mentioned steps, in outermost layer even brushing one deck step 2 again) resin adhesive liquid prepared, be then wound around one deck polyester film outward at this layer;
4) by surface through step 3) coated after prestressed reinforced concrete stake place a period of time, can use.
9. the construction method of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 8, it is characterized in that, step 1) in, each component of described resin-bonded mastic and weight portion are: epoxy vinyl ester resin 100 parts, methyl ethyl ketone peroxide 1.5 parts, cobalt iso-octoate 0.5 part, cement 100 parts.
10. the construction method of ocean engineering prestressed reinforced concrete pile foundation anti-corrosion material according to claim 8, is characterized in that, step 2) in, described mixing time is 1-2min; Described stir speed (S.S.) is 800 ~ 1000r/min; Described time of repose is 3-5min.
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| CN106948327A (en) * | 2017-05-02 | 2017-07-14 | 江苏慧天新能源科技有限公司 | A kind of steel construction ocean coats the preparation method of anti-corrosion glass fiber reinforced plastic protective cover |
| CN113337148A (en) * | 2021-06-09 | 2021-09-03 | 黄山钛可磨工业介质有限公司 | Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars |
| CN114396292A (en) * | 2021-12-21 | 2022-04-26 | 中交上海三航科学研究院有限公司 | Concrete anticorrosion material for suspended tunnel pipe section and anticorrosion method |
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| CN105203403A (en) * | 2015-09-16 | 2015-12-30 | 中交上海三航科学研究院有限公司 | Detection method for frost-resistant durability of glass fiber composite material |
| CN105203403B (en) * | 2015-09-16 | 2018-01-12 | 中交上海三航科学研究院有限公司 | A kind of detection method of glass fiber reinforced plastics composite material Frost Resistance energy |
| CN105862723A (en) * | 2016-04-01 | 2016-08-17 | 江苏东浦管桩有限公司 | Prestress concrete sheet pile for water conservancy construction |
| CN105862723B (en) * | 2016-04-01 | 2018-03-02 | 江苏东浦管桩有限公司 | Water conservancy construction prestressed concrete plate stake |
| CN106832794A (en) * | 2016-12-29 | 2017-06-13 | 浙江诺比高分子材料有限公司 | A kind of vinylite being easy to concrete binding |
| CN106948327A (en) * | 2017-05-02 | 2017-07-14 | 江苏慧天新能源科技有限公司 | A kind of steel construction ocean coats the preparation method of anti-corrosion glass fiber reinforced plastic protective cover |
| CN113337148A (en) * | 2021-06-09 | 2021-09-03 | 黄山钛可磨工业介质有限公司 | Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars |
| CN114396292A (en) * | 2021-12-21 | 2022-04-26 | 中交上海三航科学研究院有限公司 | Concrete anticorrosion material for suspended tunnel pipe section and anticorrosion method |
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