CN115572132A - Anti-corrosion PHC pipe pile and preparation method thereof - Google Patents
Anti-corrosion PHC pipe pile and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/32—Carbides; Nitrides; Borides ; Silicides
- C04B14/325—Nitrides
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
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- 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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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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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- 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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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention relates to the field of electric power facilities, in particular to an anticorrosive PHC tubular pile and a preparation method thereof, wherein the anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight: 30-45 parts of cement, 80-100 parts of slag, 70-80 parts of river sand, 20-30 parts of silicon powder, 10-15 parts of fly ash, 10-15 parts of rodlike graphite phase carbon nitride, 10-20 parts of fluorosilicone modified epoxy resin emulsion, 0.1-0.5 part of amine curing agent, 0.5-1 part of alkyl alcohol amine, 5-10 parts of basalt fiber, 5-10 parts of additive and 30-40 parts of water.
Description
Technical Field
The invention relates to the field of electric power facilities, in particular to an anticorrosive PHC tubular pile and a preparation method thereof.
Background
The PHC tubular pile, namely the prestressed high-strength concrete tubular pile, has the advantages of high bearing capacity, good pile body quality, high construction speed and the like, is widely applied to projects such as high-rise buildings, railways, highways, bridges, ports, wharfs and the like, and because the PHC tubular pile needs to bear the extrusion force of soil for a long time, under the action of external load, if the PHC tubular pile has insufficient strength, the PHC tubular pile is easy to deform, so that cracks are caused, the service life of the PHC tubular pile is shortened, and if acids or certain salts exist in an environment medium, the PHC tubular pile is easy to corrode, so that the service life is also shortened.
Chinese patent CN104291754A discloses a corrosion-resistant PHC tubular pile, which comprises the following components in parts by weight: 1 part of gelled material, 0.28 part of water, 1.58 parts of sand, 2.92 parts of stone, 0.023 part of water reducing agent and 0.005-0.03 part of organic rust inhibitor HQ; the organic rust inhibitor HQ accounts for 0.5-3% of the weight of the cementing material.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects or improvement requirements of the prior art, the invention provides an anticorrosive PHC tubular pile and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
30-45 parts of cement, 80-100 parts of slag, 70-80 parts of river sand, 20-30 parts of silicon powder, 10-15 parts of fly ash, 10-15 parts of rod-shaped graphite phase carbon nitride, 10-20 parts of fluorine-silicon modified epoxy resin emulsion, 0.1-0.5 part of amine curing agent, 0.5-1 part of alkyl alcohol amine, 5-10 parts of basalt fiber, 5-10 parts of additive and 30-40 parts of water.
Further, the feed is prepared from the following raw materials in parts by weight:
40 parts of cement, 85 parts of slag, 70 parts of river sand, 25 parts of silicon powder, 12 parts of fly ash, 10 parts of rod-shaped graphite-phase carbon nitride, 20 parts of fluorine-silicon modified epoxy resin emulsion, 0.3 part of amine curing agent, 1 part of alkyl alcohol amine, 8 parts of basalt fiber, 6 parts of additive and 35 parts of water.
Further, the preparation method of the rod-like graphite phase carbon nitride comprises the following steps:
calcining melamine at 550-580 ℃ for 3-5h to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 180-200 ℃ for 12-15h, washing the obtained product, and drying in vacuum to constant weight.
Further, the preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing epoxy resin and an emulsifier, heating to 70-80 ℃, stirring for 10-20min, adding water, continuously stirring for 1-2h, adding an ammonium persulfate solution, a vinyl silane coupling agent and perfluoroalkyl ethyl methacrylate, reacting for 2-3h under heat preservation, and cooling to room temperature.
Further, the emulsifier is OP-10 and sodium dodecyl sulfate, and the mass ratio of the two is 1-5:1-5.
Further, the vinyl silane coupling agent is any one or more of a silane coupling agent A-151, a silane coupling agent A-171, a silane coupling agent A-172 and a silane coupling agent KH-570.
Further, the amine curing agent is any one or more of ethylenediamine, diethylenetriamine, triethylenetetramine, tetramethylenediamine, hexamethylenediamine and dodecamethylenediamine.
Further, the alkyl alcohol amine is one or more of triethanolamine, triisopropanolamine and diethanol monoisopropanolamine.
Further, the admixture is a polycarboxylic acid water reducing agent, an air entraining agent and an expanding agent.
The invention also provides a preparation method of the anticorrosive PHC tubular pile, which comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rodlike graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, an amine curing agent, alkylol amine, basalt fiber, an additive and water to obtain a mixture, pouring the mixture into a PHC pipe pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at the temperature of 80-90 ℃ for 4-6 hours, then carrying out demoulding, and carrying out natural curing.
The invention has the beneficial effects that:
the invention provides an anticorrosion PHC pipe pile, which can make rod-shaped graphite phase carbon nitride exert the effect of 'seed crystal', make hydration products, especially calcium hydroxide, quickly gather on the surface of 'ready-made crystal nucleus', reduce the orientation degree of the calcium hydroxide, accelerate the hydration process, make the cement hydration process directly skip 'the process of forming CSH stable seed crystal', namely CSH directly grows on the surface of the rod-shaped graphite phase carbon nitride, thereby accelerating the hydration process, filling the internal space of concrete, improving the anticorrosion and impermeability performance, the rod-shaped structure can more effectively strengthen the interface structure, and has the effect of toughening the structure, the fluorine-silicon modified epoxy resin emulsion can fill the microcracks or impermeability defects on the surface of aggregate, harden the formed network structure, improve the strength of the aggregate, prevent crack propagation, the formed polymer film can improve the interface transition area, reduce the rigidity of the original interface, increase the flexibility, can absorb more energy in the stress process, and inhibit the formation of cracks, and the existence of the polymer film can prevent the infiltration of acids or some anticorrosion salt ions, improve the siloxane structure can participate in the cement hydration process, can react with the cement network structure to form the polysiloxane structure, and can improve the interpenetrating water-proof performance together with the fluorine-containing alkyl, and can meet the mechanical requirements of the invention.
Drawings
Fig. 1 is an SEM image of the PHC pile after hydration in the preparation process of example 1 of the present invention.
Detailed Description
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
Cement: 42.5 of silico-hydrochloric acid cement PO and a conch building material;
slag: s95 grade slag, guangdong gao steel jave new materials limited;
river sand: the fineness modulus is 2.8, and the mud content is less than 1%;
silicon powder: EBS-S type silicon powder, dondong Lanxing science and technology development Co., ltd;
fly ash: hebei Chuangtian engineering materials, inc.;
rod-like graphite-phase carbon nitride: self-made;
fluorine-silicon modified epoxy resin emulsion: self-made;
ethylene diamine: chemical Limited, jinnan Runchang;
diethanolisopropanolamine: chemical Limited, jinnan Runchang;
basalt fiber: processing factory for JinCan mineral products in Lingshou county;
polycarboxylic acid water reducing agent: hengda chemical Co., ltd. In Tai Ji prefecture;
the triterpenoid saponin air entraining agent comprises: hengda chemical Co., ltd. In Tai Ji prefecture;
UEA swelling agent: yunnan Zhuo-Ying chemical and building materials Co Ltd
Example 1:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
40 parts of cement, 85 parts of slag, 70 parts of river sand, 25 parts of silicon powder, 12 parts of fly ash, 10 parts of rod-shaped graphite-phase carbon nitride, 20 parts of fluorine-silicon modified epoxy resin emulsion, 0.3 part of ethylenediamine, 1 part of diethanol monoisopropanolamine, 8 parts of basalt fiber, 2 parts of polycarboxylic acid water reducer, 1 part of triterpenoid saponin air entraining agent, 3 parts of UEA expanding agent and 35 parts of water.
The preparation method of the rod-shaped graphite phase carbon nitride comprises the following steps:
calcining 100g of melamine at 570 ℃ for 4 hours to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into 400mL of water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 185 ℃ for 14 hours, washing the obtained product, and drying the product in vacuum at 50 ℃ until the weight is constant.
The preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing 50g of epoxy resin E-44, 1g of OP-10 and 5g of sodium dodecyl sulfate, heating to 75 ℃, stirring for 20min, adding 100mL of water, continuing stirring for 2h, adding 5mL of 5wt% ammonium persulfate solution, 10.46g of silane coupling agent A-151 and 10g of perfluoroalkyl ethyl methacrylate, reacting for 2.5h under heat preservation, and cooling to room temperature.
The preparation method of the anticorrosive PHC tubular pile comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rod-shaped graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, ethylenediamine, diethanolisopropanolamine, basalt fiber, polycarboxylic acid water reducing agent, triterpenoid saponin air entraining agent, UEA expanding agent and water to obtain a mixture, pouring the mixture into a PHC tubular pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at 90 ℃ for 5 hours, then carrying out demoulding, and carrying out natural curing for 28 days.
Example 2:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
45 parts of cement, 100 parts of slag, 80 parts of river sand, 30 parts of silicon powder, 15 parts of fly ash, 15 parts of rod-shaped graphite-phase carbon nitride, 20 parts of fluorosilicone modified epoxy resin emulsion, 0.5 part of ethylenediamine, 1 part of diethanol monoisopropanolamine, 10 parts of basalt fiber, 2 parts of polycarboxylic acid water reducer, 1 part of triterpenoid saponin air entraining agent, 3 parts of UEA expanding agent and 40 parts of water.
The preparation method of the rod-shaped graphite phase carbon nitride comprises the following steps:
calcining 100g of melamine at 580 ℃ for 5 hours to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into 400mL of water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 200 ℃ for 15 hours, washing the obtained product, and drying the product in vacuum at 50 ℃ until the weight is constant.
The preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing 50g of epoxy resin E-44, 1g of OP-10 and 5g of sodium dodecyl sulfate, heating to 80 ℃, stirring for 20min, adding 100mL of water, continuing stirring for 2h, adding 5mL of 5wt% ammonium persulfate solution, 10.46g of silane coupling agent A-151 and 10g of perfluoroalkyl ethyl methacrylate, reacting for 3h under heat preservation, and cooling to room temperature.
The preparation method of the anticorrosive PHC tubular pile comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rod-shaped graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, ethylenediamine, diethanolisopropanolamine, basalt fiber, polycarboxylic acid water reducing agent, triterpenoid saponin air entraining agent, UEA expanding agent and water to obtain a mixture, pouring the mixture into a PHC tubular pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at 90 ℃ for 6 hours, then carrying out demoulding, and carrying out natural curing for 28 days.
Example 3:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
30 parts of cement, 80 parts of slag, 70 parts of river sand, 20 parts of silicon powder, 10 parts of fly ash, 10 parts of rod-shaped graphite-phase carbon nitride, 10 parts of fluorine-silicon modified epoxy resin emulsion, 0.1 part of ethylenediamine, 0.5 part of diethanol monoisopropanolamine, 5 parts of basalt fiber, 2 parts of polycarboxylic acid water reducer, 1 part of triterpenoid saponin air entraining agent, 3 parts of UEA expanding agent and 30 parts of water.
The preparation method of the rod-shaped graphite phase carbon nitride comprises the following steps:
calcining 100g of melamine at 550 ℃ for 3h to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into 400mL of water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 180 ℃ for 12h, washing the obtained product, and drying in vacuum at 50 ℃ to constant weight.
The preparation method of the fluorine-silicon modified epoxy resin emulsion comprises the following steps:
mixing 50g of epoxy resin E-44, 1g of OP-10 and 5g of sodium dodecyl sulfate, heating to 70 ℃, stirring for 10min, adding 100mL of water, continuing stirring for 1h, adding 5mL of 5wt% ammonium persulfate solution, 10.46g of silane coupling agent A-151 and 10g of perfluoroalkyl ethyl methacrylate, reacting for 2h under heat preservation, and cooling to room temperature.
The preparation method of the anticorrosive PHC tubular pile comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rod-shaped graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, ethylenediamine, diethanolisopropanolamine, basalt fiber, polycarboxylic acid water reducing agent, triterpenoid saponin air entraining agent, UEA expanding agent and water to obtain a mixture, pouring the mixture into a PHC tubular pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at 80 ℃ for 4 hours, then carrying out demoulding, and carrying out natural curing for 28 days.
Example 4:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
45 parts of cement, 80 parts of slag, 80 parts of river sand, 20 parts of silicon powder, 15 parts of fly ash, 10 parts of rod-shaped graphite-phase carbon nitride, 20 parts of fluorine-silicon modified epoxy resin emulsion, 0.1 part of ethylenediamine, 1 part of diethanol monoisopropanolamine, 5 parts of basalt fiber, 2 parts of polycarboxylic acid water reducer, 1 part of triterpenoid saponin air entraining agent, 3 parts of UEA expanding agent and 40 parts of water.
The preparation method of the rod-shaped graphite phase carbon nitride comprises the following steps:
calcining 100g of melamine at 550 ℃ for 5h to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into 400mL of water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 180 ℃ for 15h, washing the obtained product, and drying the product in vacuum at 50 ℃ to constant weight.
The preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing 50g of epoxy resin E-44, 1g of OP-10 and 5g of sodium dodecyl sulfate, heating to 70 ℃, stirring for 20min, adding 100mL of water, continuing stirring for 1h, adding 5mL of 5wt% ammonium persulfate solution, 10.46g of silane coupling agent A-151 and 10g of perfluoroalkyl ethyl methacrylate, reacting for 3h under heat preservation, and cooling to room temperature.
The preparation method of the anticorrosive PHC tubular pile comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rod-shaped graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, ethylenediamine, diethanolisopropanolamine, basalt fiber, polycarboxylic acid water reducing agent, triterpenoid saponin air entraining agent, UEA expanding agent and water to obtain a mixture, pouring the mixture into a PHC tubular pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at 80 ℃ for 6 hours, then carrying out demoulding, and carrying out natural curing for 28 days.
Example 5:
an anticorrosive PHC tubular pile is prepared from the following raw materials in parts by weight:
30 parts of cement, 100 parts of slag, 70 parts of river sand, 30 parts of silicon powder, 10 parts of fly ash, 15 parts of rod-shaped graphite-phase carbon nitride, 10 parts of fluorosilicone modified epoxy resin emulsion, 0.5 part of ethylenediamine, 0.5 part of diethanol monoisopropanolamine, 10 parts of basalt fiber, 2 parts of polycarboxylic acid water reducer, 1 part of triterpenoid saponin air entraining agent, 3 parts of UEA expanding agent and 30 parts of water.
The preparation method of the rod-shaped graphite phase carbon nitride comprises the following steps:
calcining 100g of melamine at 580 ℃ for 3 hours to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into 400mL of water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 200 ℃ for 12 hours, washing the obtained product, and drying the product in vacuum at 50 ℃ until the weight is constant.
The preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing 50g of epoxy resin E-44, 1g of OP-10 and 5g of sodium dodecyl sulfate, heating to 80 ℃, stirring for 10min, adding 100mL of water, continuing stirring for 2h, adding 5mL of 5wt% ammonium persulfate solution, 10.46g of silane coupling agent A-151 and 10g of perfluoroalkyl ethyl methacrylate, keeping the temperature, reacting for 2h, and cooling to room temperature.
The preparation method of the anticorrosive PHC tubular pile comprises the following steps:
uniformly mixing cement, slag, river sand, silicon powder, fly ash, rod-shaped graphite-phase carbon nitride, fluorine-silicon modified epoxy resin emulsion, ethylenediamine, diethanolisopropanolamine, basalt fiber, polycarboxylic acid water reducing agent, triterpenoid saponin air entraining agent, UEA expanding agent and water to obtain a mixture, pouring the mixture into a PHC tubular pile die, carrying out centrifugal forming to obtain a semi-finished product, carrying out steam curing at 90 ℃ for 4 hours, then carrying out demoulding, and carrying out natural curing for 28 days.
Comparative example 1
Essentially the same as example 1 except that the graphite-phase carbon nitride rod was not added.
Comparative example 2
The same as example 1 except that no fluorosilicone-modified epoxy resin emulsion was added.
Comparative example 3
Essentially the same as example 1, except that the rod-like graphite phase carbon nitride was replaced with commercially available carbon nitride.
Comparative example 4
Substantially the same as in example 1, except that a commercially available epoxy resin emulsion was used in place of the fluorosilicone-modified epoxy resin emulsion.
And (3) performance testing:
concrete samples prepared from PHC tubular pile raw materials in examples 1-5 and comparative examples 1-4 of the invention are used as samples;
and (3) testing mechanical properties: the method is carried out according to the method specified in GB/T50081-2002 Standard for testing the mechanical properties of the common concrete: the unit MPa;
and (3) testing the corrosion resistance: the RCM method is also called a rapid chloride ion migration coefficient method and is used for determining the diffusion coefficient of the unsteady migration of chloride ions in concrete to determine the permeability resistance of the concrete chloride ions so as to represent the corrosion resistance, and the unit is multiplied by 10 -12 m 2 /s；
Long-age salt solution immersion test: and (3) soaking the sample in 3.5% NaCl solution for 90 days, taking out, performing mechanical property test, and calculating the mechanical property reduction rate in unit percent.
The test results are shown in table 1 below:
TABLE 1
As can be seen from the above table 1, the PHC tubular pile of the invention has excellent mechanical properties and corrosion resistance, and can meet the use requirements.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The anti-corrosion PHC tubular pile is characterized by being prepared from the following raw materials in parts by weight:
30-45 parts of cement, 80-100 parts of slag, 70-80 parts of river sand, 20-30 parts of silica powder, 10-15 parts of fly ash, 10-15 parts of rod-shaped graphite phase carbon nitride, 10-20 parts of fluorine-silicon modified epoxy resin emulsion, 0.1-0.5 part of amine curing agent, 0.5-1 part of alkyl alcohol amine, 5-10 parts of basalt fiber, 5-10 parts of additive and 30-40 parts of water.
2. The anti-corrosion PHC tubular pile according to claim 1, which is prepared from the following raw materials in parts by weight:
40 parts of cement, 85 parts of slag, 70 parts of river sand, 25 parts of silicon powder, 12 parts of fly ash, 10 parts of rod-shaped graphite-phase carbon nitride, 20 parts of fluorine-silicon modified epoxy resin emulsion, 0.3 part of amine curing agent, 1 part of alkyl alcohol amine, 8 parts of basalt fiber, 6 parts of additive and 35 parts of water.
3. The corrosion-resistant PHC pipe pile of claim 1, wherein the preparation method of the rod-like graphite-phase carbon nitride comprises the following steps:
calcining melamine at 550-580 ℃ for 3-5h to obtain blocky graphite-phase carbon nitride, grinding the blocky graphite-phase carbon nitride, adding the blocky graphite-phase carbon nitride into water, uniformly stirring to obtain suspension, transferring the suspension into a hydrothermal reaction kettle, reacting at 180-200 ℃ for 12-15h, washing the obtained product, and drying in vacuum to constant weight.
4. The corrosion-resistant PHC tubular pile of claim 1, wherein the preparation method of the fluorosilicone modified epoxy resin emulsion comprises the following steps:
mixing epoxy resin and an emulsifier, heating to 70-80 ℃, stirring for 10-20min, adding water, continuously stirring for 1-2h, adding an ammonium persulfate solution, a vinyl silane coupling agent and perfluoroalkyl ethyl methacrylate, reacting for 2-3h under heat preservation, and cooling to room temperature.
5. The corrosion-resistant PHC pipe pile according to claim 4, wherein the emulsifier is OP-10 and sodium dodecyl sulfate, and the mass ratio of the two is 1-5:1-5.
6. The corrosion-resistant PHC pipe pile according to claim 4, wherein the vinyl silane coupling agent is any one or more of silane coupling agent A-151, silane coupling agent A-171, silane coupling agent A-172 and silane coupling agent KH-570.
7. The corrosion-resistant PHC tubular pile according to claim 1, wherein the amine curing agent is one or more of ethylenediamine, diethylenetriamine, triethylenetetramine, tetramethylenediamine, hexamethylenediamine, and dodecamethylenediamine.
8. The corrosion-resistant PHC pipe pile of claim 1, wherein the alkanolamine is any one or more of triethanolamine, triisopropanolamine, and diethanolisopropanolamine.
9. The corrosion-resistant PHC pile of claim 1, wherein the admixture is a polycarboxylic acid water reducing agent, an air entraining agent and an expanding agent.
10. The method for preparing an anti-corrosion PHC tubular pile according to any one of claims 1 to 9, wherein cement, slag, river sand, silica fume, fly ash, rodlike graphite-phase carbon nitride, fluorosilicone modified epoxy resin emulsion, amine curing agent, alkyl alcohol amine, basalt fiber, admixture and water are uniformly mixed to obtain a mixture, the mixture is poured into a PHC tubular pile die, centrifugal molding is carried out to obtain a semi-finished product, the semi-finished product is subjected to steam curing at 80-90 ℃ for 4-6 hours, and then demoulding and natural curing are carried out.
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