CN112456879A - High-strength corrosion-resistant concrete for engineering pile and preparation method thereof - Google Patents
High-strength corrosion-resistant concrete for engineering pile and preparation method thereof Download PDFInfo
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- CN112456879A CN112456879A CN202011438412.5A CN202011438412A CN112456879A CN 112456879 A CN112456879 A CN 112456879A CN 202011438412 A CN202011438412 A CN 202011438412A CN 112456879 A CN112456879 A CN 112456879A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
Abstract
The invention discloses high-strength corrosion-resistant concrete for an engineering pile and a preparation method thereof, and relates to the technical field of building materials. The high-strength corrosion-resistant concrete for the engineering pile is mainly prepared from the following concrete raw materials in parts by weight: 50-100 parts of cement, 20-70 parts of micro-silica fume, 30-50 parts of water, 180 parts of fine aggregate, 150 parts of coarse aggregate and 210 parts of coarse aggregate; the concrete raw material also comprises an external charging material and a modified anticorrosive material, wherein the external charging material comprises 2-5 parts by weight of a water reducing agent, and the modified anticorrosive material is mainly prepared from the following raw materials in parts by weight: 15-30 parts of attapulgite, 1.5-4 parts of dimethylaminoethanol and 0.5-1.5 parts of glycol decahydrate. It has the advantage of good corrosion resistance. The preparation method comprises the following steps: mixing materials, preparing concrete and the like. The preparation method has the advantage of improving the corrosion resistance of the product.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to high-strength corrosion-resistant concrete for an engineering pile and a preparation method thereof.
Background
The engineering pile is used in engineering, bears certain load in building and is mainly used for column, beam, floor slab, etc. The concrete pile has the advantages of convenient manufacture, high pile body strength, good corrosion resistance and the like, and is gradually widely used. Concrete piles are generally prepared by pouring special concrete for engineering piles, and the concrete for the engineering piles has higher requirements on corrosion resistance.
CN105461267A discloses a corrosion-resistant concrete, which is prepared from the following raw materials in parts by mass: 50-60 parts of cement, 5-9 parts of diisopropanolamine, 7-9 parts of calcium lignosulfonate, 6-8 parts of calcium nitrate, 15-20 parts of urea-formaldehyde resin, 4-7 parts of monoethanolamine, 8-11 parts of acrylic emulsion, 7-12 parts of calcium carbonate, 8-10 parts of glass fiber, 6-8 parts of silicon dioxide powder, 3-6 parts of sodium perborate, 14-17 parts of fly ash and 16-18 parts of ceramsite. According to the technical scheme, corrosion-resistant components such as diisopropanolamine and monoethanolamine are added into the corrosion-resistant concrete, so that the corrosion resistance of the concrete is improved.
In view of the above-mentioned related technologies, the inventors believe that the corrosion-resistant components such as diisopropanolamine and monoethanolamine are dissolved in water in a large amount, and are not easily adsorbed on the surfaces of other components in the corrosion-resistant concrete, which is not favorable for the corrosion-resistant components to be uniformly dispersed in the corrosion-resistant concrete, and is not favorable for the corrosion-resistant components to fully exert their corrosion-resistant effects.
Disclosure of Invention
In order to improve the corrosion resistance of the concrete for the engineering pile, the application provides high-strength corrosion-resistant concrete for the engineering pile and a preparation method thereof.
In a first aspect, the application provides a high-strength corrosion-resistant concrete for an engineering pile, which adopts the following technical scheme:
the high-strength corrosion-resistant concrete for the engineering pile is mainly prepared from the following concrete raw materials in parts by weight: 50-100 parts of cement, 20-70 parts of micro-silica fume, 30-50 parts of water, 180 parts of fine aggregate, 150 parts of coarse aggregate and 210 parts of coarse aggregate; the concrete raw material also comprises an external charging material and a modified anticorrosive material, wherein the external charging material comprises 2-5 parts by weight of a water reducing agent, and the modified anticorrosive material is mainly prepared from the following raw materials in parts by weight: 15-30 parts of attapulgite, 1.5-4 parts of dimethylaminoethanol and 0.5-1.5 parts of glycol decahydrate.
By adopting the technical scheme, the modified anticorrosion material is prepared from the attapulgite, the dimethylaminoethanol and the dodecanediol ester, and then the modified anticorrosion material is added into the concrete for the engineering pile, wherein the dimethylaminoethanol has excellent anticorrosion effect, the attapulgite has a certain pore channel and has the characteristic of large specific surface area, the alcohol hydroxyl on the dodecanol ester and the silicon hydroxyl on the surface of the attapulgite have certain adsorption effect by modification treatment, so that the dodecanol ester is favorably adsorbed on the surface of the attapulgite, the dodecanediol ester and the dimethylaminoethanol have good compatibility, the dodecanediol ester has certain adsorption effect on the dimethylaminoethanol, the water solubility of the dodecanol ester is poor, the attapulgite and the dodecanol ester with large specific surface area are favorable for adsorbing the dimethylaminoethanol on the surface of the attapulgite, and then the attapulgite with large specific surface area is uniformly dispersed in the high-strength anticorrosion concrete for the engineering pile, the content of free dimethylaminoethanol in water in the high-strength corrosion-resistant concrete for the engineering pile during preparation, transportation and construction is reduced, the loss of corrosion-resistant components is reduced, and the corrosion resistance of the product is improved. After the high-strength corrosion-resistant concrete for the engineering pile is hardened and cured, the water content in the high-strength corrosion-resistant concrete for the engineering pile is low, the dimethylaminoethanol has an excellent corrosion resistance effect, the decanediol ester with good compatibility with the dimethylaminoethanol is beneficial to the film formation of the dimethylaminoethanol, the corrosion resistance effect of the dimethylaminoethanol is better played, and the corrosion resistance of products is improved.
Preferably, the concrete is mainly prepared from the following concrete raw materials in parts by weight: 65-85 parts of cement, 40-50 parts of micro silica fume, 30-50 parts of water, 180 parts of fine aggregate 140, 185 parts of coarse aggregate 175, 2-5 parts of a water reducing agent, 21-24 parts of attapulgite, 2.6-3 parts of dimethylaminoethanol and 0.8-1.2 parts of glycol decahydrate. More preferably, 75 parts of cement, 45 parts of micro-silica fume, 40 parts of water, 160 parts of fine aggregate, 180 parts of coarse aggregate, 3.5 parts of water reducing agent, 22.5 parts of attapulgite, 2.8 parts of dimethylaminoethanol and 1 part of glycol myristate.
By adopting the technical scheme, the better raw material feeding proportion is used, the adhesive strength among the components in the concrete is favorably improved, and the mechanical property of the product is favorably improved.
Preferably, the water reducing agent is a sulfamate water reducing agent.
By adopting the technical scheme and using the sulfamate water reducing agent, on one hand, the full hydration of cement is facilitated, and the crack resistance of the product is improved; on the other hand, the sulfamate water reducer has good compatibility with components such as dimethylaminoethanol and glycol decahydrate, and is beneficial to improving the compressive strength of the hardened product.
Preferably, the external charge further comprises 2-5 parts by weight of basalt fibers.
By adopting the technical scheme, the basalt fiber is added into the high-strength corrosion-resistant concrete for the engineering pile, so that the anti-cracking performance of the product is improved, the service life of the product is prolonged, and the market popularization of the product is facilitated.
Preferably, the specific surface area of the attapulgite is more than 25 square meters per gram, and the particle size of the attapulgite is not more than 50 μm.
By adopting the technical scheme, the attapulgite with large specific surface area is used, so that the anti-corrosion component is favorably and uniformly dispersed in the high-strength anti-corrosion concrete for the engineering pile, the action area of the anti-corrosion component is favorably increased, and the anti-corrosion performance of a product is better improved.
Preferably, the particle size of the micro silica fume is not more than 25 μm, the particle size of the fine aggregate is not more than 5mm, and the particle size of the coarse aggregate is 5-25 mm.
By adopting the technical scheme, the concrete raw material with the appropriate particle size is used, so that the slump is favorably controlled, the slump is in an appropriate range, the mechanical property of the product is improved, the service life of the product is favorably prolonged, and the market popularization of the product is favorably realized.
Preferably, the preparation method of the modified anticorrosive material comprises the following steps: adding ethanol 5-8 times of the weight of dimethylaminoethanol into dimethylaminoethanol and dodecyl alcohol, stirring for at least 20min, adding attapulgite, mixing uniformly, and drying the materials at 40-60 ℃ for at least 120min to obtain the modified anticorrosive material.
By adopting the technical scheme, the dimethylaminoethanol and the decaglycol ester are dissolved in the ethanol, then the attapulgite is added, the ethanol is removed through drying, the dimethylaminoethanol and the decaglycol ester are adsorbed on the surface of the attapulgite, and the dimethylaminoethanol and the decaglycol ester are uniformly dispersed in the high-strength corrosion-resistant concrete for the engineering pile along with the attapulgite, so that the action area of the corrosion-resistant components is increased, and the corrosion resistance of the product is better improved.
In a second aspect, the application provides a preparation method of high-strength corrosion-resistant concrete for an engineering pile, which adopts the following technical scheme:
a preparation method of high-strength corrosion-resistant concrete for engineering piles comprises the following steps:
s1 mixing: weighing coarse aggregate according to a set proportion, adding fine aggregate and micro-silica fume, and uniformly mixing to obtain powder;
s2 concrete preparation: weighing water according to a set proportion, stirring, adding the external feeding material, the modified anticorrosive material and the powder prepared in the step S1, stirring for 3-6min, adding cement, and continuously stirring for 2-5min to prepare the high-strength corrosion-resistant concrete for the engineering pile.
By adopting the technical scheme, the high-strength corrosion-resistant concrete for the engineering pile is prepared by using the method disclosed by the application, the corrosion resistance of the product is favorably improved, the service life of the product is favorably prolonged, and the market popularization of the product is favorably realized.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the application prepares the modified anticorrosion material by using the attapulgite, the dimethylaminoethanol and the dodecanediol ester, then adds the modified anticorrosion material into the concrete for the engineering pile, wherein the dimethylaminoethanol has excellent anticorrosion effect, the attapulgite has a certain pore channel, the attapulgite has the characteristic of large specific surface area, the alcoholic hydroxyl group on the dodecanol ester and the silicon hydroxyl group on the surface of the attapulgite have certain adsorption effect by modification treatment, so that the dodecanol ester is adsorbed on the surface of the attapulgite, the dodecanediol ester and the dimethylaminoethanol have good compatibility, the dodecanediol ester has certain adsorption effect on the dimethylaminoethanol, the water solubility of the dodecanol ester is poor, the attapulgite and the dodecanol ester with large specific surface area are used to help the dimethylaminoethanol to be adsorbed on the surface of the attapulgite, and then the dimethylaminoethanol with the large specific surface area of the attapulgite is uniformly dispersed in the high-strength anticorrosion concrete for the engineering pile, the content of free dimethylaminoethanol in water during preparation, transportation and construction of the high-strength corrosion-resistant concrete for the engineering pile is reduced, so that the loss of corrosion-resistant components is reduced, and the corrosion resistance of the product is improved; after the high-strength corrosion-resistant concrete for the engineering pile is hardened and cured, the water content in the high-strength corrosion-resistant concrete for the engineering pile is low, the dimethylaminoethanol has an excellent corrosion resistance effect, and the decanediol ester which is good in compatibility with the dimethylaminoethanol contributes to the film formation of the dimethylaminoethanol, the corrosion resistance effect of the dimethylaminoethanol is better played, and the corrosion resistance of a product is improved;
2. according to the application, the dimethylaminoethanol and the decaglycol ester are dissolved in the ethanol, then the attapulgite is added, the ethanol is removed through drying, the dimethylaminoethanol and the decaglycol ester are adsorbed on the surface of the attapulgite, and the dimethylaminoethanol and the decaglycol ester are uniformly dispersed in the high-strength corrosion-resistant concrete for the engineering pile along with the attapulgite, so that the action area of corrosion-resistant components is increased, and the corrosion resistance of a product is better improved;
3. the method has the advantages that the mechanical performance of the product is improved by adding the basalt fibers, controlling the particle size of the raw materials, selecting the sulfamate water reducing agent and the like, the service life of the product is prolonged, and the market popularization of the product is facilitated.
Detailed Description
The concrete for the engineering pile has higher requirement on corrosion resistance, and anti-corrosion components such as diisopropanolamine and the like are generally added into the concrete for the engineering pile. In view of the above-mentioned related arts, the inventors believe that, since the corrosion-resistant component is dissolved in water in a large amount, it is not easily adsorbed on the surface of other components of the corrosion-resistant concrete, and thus, the loss is large in the concrete for construction piles in the production, transportation and construction works. On one hand, the utilization rate of the corrosion-resistant components is low, which is not beneficial to fully playing the corrosion-resistant role and better improving the corrosion resistance of the product; on the other hand, because the loss of the anti-corrosion components is large, the dosage of the anti-corrosion components in the commonly used anti-corrosion concrete is large, a large amount of anti-corrosion components enter a sewer along with water, and especially when the organic amine anti-corrosion components are used, certain adverse effects are brought to the environment. The application prepares the modified anticorrosion material by using the attapulgite, the dimethylaminoethanol and the dodecanediol ester, then adds the modified anticorrosion material into the concrete for the engineering pile, wherein the dimethylaminoethanol has excellent anticorrosion effect, the attapulgite has a certain pore channel, the attapulgite has the characteristic of large specific surface area, the alcoholic hydroxyl group on the dodecanol ester and the silicon hydroxyl group on the surface of the attapulgite have certain adsorption effect by modification treatment, so that the dodecanol ester is adsorbed on the surface of the attapulgite, the dodecanediol ester and the dimethylaminoethanol have good compatibility, the dodecanediol ester has certain adsorption effect on the dimethylaminoethanol, the water solubility of the dodecanol ester is poor, the attapulgite and the dodecanol ester with large specific surface area are used to help the dimethylaminoethanol to be adsorbed on the surface of the attapulgite, and then the high-strength anticorrosion concrete for the engineering pile is uniformly dispersed along with the attapulgite with large specific surface area, the content of free dimethylaminoethanol in water during preparation, transportation and construction of the high-strength corrosion-resistant concrete for the engineering pile is reduced, loss of corrosion-resistant components is reduced, the consumption of the corrosion-resistant components is reduced, environmental pollution is reduced, and environmental protection performance is improved. After the high-strength corrosion-resistant concrete for the engineering pile is hardened and cured, the water content in the high-strength corrosion-resistant concrete for the engineering pile is low, the dimethylaminoethanol has an excellent corrosion resistance effect, the decanediol ester with good compatibility with the dimethylaminoethanol is beneficial to the film formation of the dimethylaminoethanol, the corrosion resistance effect of the dimethylaminoethanol is better played, and the corrosion resistance of products is improved.
Examples
The raw materials related to the invention are all commercially available, and the types and sources of the raw materials are shown in table 1.
TABLE 1 Specification, type and origin of the raw materials
In the following examples, coarse and fine aggregates were produced from Sichuan, the coarse aggregate was crushed stone, and the fine aggregate was river sand. Sieving the fine aggregate with a screen with the aperture of 5mm, and crushing the particles with the particle size of more than 5mm to be not more than 5mm by a crusher, wherein the fine aggregate with the particle size of not more than 5mm is selected. Screening the attapulgite by a screen with the aperture of 50 mu m, and selecting the attapulgite with the particle size of not more than 50 mu m. Sieving the micro silica fume by using a screen with the aperture of 25 mu m, and selecting the micro silica fume with the particle size of not more than 25 mu m. Sieving coarse aggregate with 5mm and 25mm mesh sieve, pulverizing the particles with particle size of more than 25mm to no more than 25mm with pulverizer, and selecting coarse aggregate with particle size of 5-25 mm.
Example 1: a preparation method of high-strength corrosion-resistant concrete for engineering piles comprises the following steps:
s1 mixing: weighing 180kg of coarse aggregate, adding 160kg of fine aggregate and 45kg of micro-silica fume, and uniformly mixing to obtain powder. Taking 2.8kg of dimethylaminoethanol and 1kg of dodecanol ester, uniformly mixing, adding 16.8kg of ethanol, stirring at the room temperature at the rotating speed of 200 revolutions per minute for 30min, adding 22.5kg of attapulgite, continuously stirring for 10min, and drying the materials at 50 ℃ for 180min to obtain the modified anticorrosive material.
S2 concrete preparation: and weighing 40kg of water, stirring at the rotating speed of 200 revolutions per minute, adding 3.5kg of sulfamate water reducing agent, 3kg of basalt fiber external modified anticorrosive material and the powder prepared in the step S1, stirring for 4min, adding 75kg of cement, and continuously stirring for 3min to prepare the high-strength corrosion-resistant concrete for the engineering pile.
Example 2
Example 2 differs from example 1 in that example 2 does not incorporate basalt fibers, and the rest remains the same as example 1.
Example 3
Example 3 differs from example 1 in that example 3 used an equal mass of polycarboxylate water reducer (hong optical science, ltd. of Sichuan province, good number 0313) instead of the sulfamate water reducer, and otherwise the water reducer was identical to example 1.
Examples 4 to 11
Examples 4 to 11 differ from example 1 in that the amounts of the respective raw materials of examples 4 to 11 were different from each other and were identical to example 1, and the amounts of the respective raw materials of examples 4 to 11 were as shown in Table 2.
TABLE 2 addition amounts of the respective raw materials of examples 4 to 11
Examples 12 to 15
Examples 12-15 differ from example 1 in that the process parameters for each step of examples 12-15 are different and all of them are identical to example 1, and the process parameters for each step of examples 12-15 are shown in Table 3.
TABLE 3 parameters in the various steps of examples 12-15
Comparative example
Comparative example 1
The difference between the comparative example 1 and the example 1 is that the modified anticorrosive material is not added in the comparative example 1, the preparation step of the modified anticorrosive material is not carried out in the comparative example 1, and the rest is consistent with the example 1.
Comparative example 2
Comparative example 2 differs from comparative example 1 in that comparative example 2 added 2.8kg of dimethylaminoethanol but without the addition of the dodecanediol ester and the attapulgite, comparative example 2 step S2 added the dimethylaminoethanol directly to the water, all remaining the same as comparative example 1.
Comparative example 3
Comparative example 3 differs from comparative example 1 in that comparative example 3 added 2.8kg of dimethylaminoethanol and 1kg of pentadecanol ester without the addition of attapulgite, and comparative example 3 step S2 added dimethylaminoethanol and pentadecanol ester directly to water, all the other in agreement with comparative example 1.
Comparative example 4
Comparative example 4 is different from example 1 in that in step S2 of comparative example 4, attapulgite, dimethylaminoethanol and pentadecanol ester were directly added to water, and comparative example 4 did not modify attapulgite with ethanol and otherwise remained the same as example 1.
Performance detection
1. Compressive strength: referring to GB/T50081-2002 Standard test method for mechanical properties of common concrete, a plurality of cube standard test blocks with the side length of 150mm are manufactured, the cube standard test blocks are maintained at room temperature for 28 days, and the compression strength is tested, wherein the test results are shown in Table 4.
2. Sulfate attack resistance: the test is carried out according to GB/T749-2008 'test method for resisting sulfate corrosion of cement', and the test results are shown in Table 4.
TABLE 4 comparison table of performance test results of different concrete products
The concrete product prepared by the method has the advantages of low compressive strength, poor corrosion resistance, no contribution to prolonging the service life of the product and no contribution to market popularization because the modified anticorrosive material is not added in the comparative example 1, namely the attapulgite, the dimethylaminoethanol and the dodecanol ester are not added at the same time, and the preparation step of the modified anticorrosive material is not carried out in the comparative example 1. Comparative example 2 Dodecanediol ester and attapulgite were not added, and comparative example 2 step S2 where dimethylaminoethanol was directly added to water, the compressive strength of the prepared concrete product was improved and the corrosion resistance was still poor. Comparative example 3 no attapulgite was added, and in comparative example 3 step S2, dimethylaminoethanol and pentadiol were directly added to water, and the resulting concrete product had a lower compressive strength, a slightly improved corrosion resistance, but still had poor corrosion resistance. In the step S2 which is not in the comparative example 4, the attapulgite, the dimethylaminoethanol and the decanediol ester are directly added into the water, and in the comparative example 4, the attapulgite is not modified by ethanol, so that the compressive strength and the corrosion resistance of the prepared concrete product are both improved, but the corrosion resistance is still low, the service life of the product is not prolonged, and the product market popularization is not facilitated.
Comparing the experimental results of the example 1 and the comparative examples 1 to 4, it can be seen that, in the process of preparing the high-strength corrosion-resistant concrete for the engineering pile, the modified anticorrosive material prepared by the method disclosed by the application of dimethylaminoethanol, glycol dodecaoxide and attapulgite is added, and the prepared concrete product has excellent compression resistance and corrosion resistance, is beneficial to prolonging the service life of the product and is beneficial to market popularization of the product.
The experimental results of comparative example 1 and example 2 show that the compressive property and the corrosion resistance of the concrete product prepared in example 2 are not greatly changed without adding the basalt fiber, but the improvement of the flexural resistance and the crack resistance of the concrete product is not facilitated due to the fact that the basalt fiber is not added. Comparing the experimental results of example 1 and example 3, the example 3 uses the polycarboxylate water reducing agent instead of the sulfamate water reducing agent, and the compression resistance and the corrosion resistance of the prepared concrete product are both slightly reduced, which is not beneficial to prolonging the service life of the product and the market popularization of the product.
Compared with the embodiment 1, the addition amounts of the raw materials in the embodiments 4 to 11 are different, the process parameters in the steps of the embodiments 12 to 15 are different, and the prepared concrete product has excellent compression resistance and corrosion resistance, is beneficial to prolonging the service life of the product and is beneficial to market popularization of the product.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The high-strength corrosion-resistant concrete for the engineering pile is characterized by mainly comprising the following concrete raw materials in parts by weight: 50-100 parts of cement, 20-70 parts of micro-silica fume, 30-50 parts of water, 180 parts of fine aggregate, 150 parts of coarse aggregate and 210 parts of coarse aggregate; the concrete raw material also comprises an external charging material and a modified anticorrosive material, wherein the external charging material comprises 2-5 parts by weight of a water reducing agent, and the modified anticorrosive material is mainly prepared from the following raw materials in parts by weight: 15-30 parts of attapulgite, 1.5-4 parts of dimethylaminoethanol and 0.5-1.5 parts of glycol decahydrate.
2. The high-strength corrosion-resistant concrete for the engineering pile as claimed in claim 1, which is mainly prepared from the following concrete raw materials in parts by weight: 65-85 parts of cement, 40-50 parts of micro silica fume, 30-50 parts of water, 180 parts of fine aggregate 140, 185 parts of coarse aggregate 175, 2-5 parts of a water reducing agent, 21-24 parts of attapulgite, 2.6-3 parts of dimethylaminoethanol and 0.8-1.2 parts of glycol decahydrate.
3. The high-strength corrosion-resistant concrete for the engineering pile as claimed in claim 1, wherein: the water reducing agent is a sulfamate water reducing agent.
4. The high-strength corrosion-resistant concrete for the engineering pile as claimed in claim 1, wherein: the external charging material also comprises 2-5 parts by weight of basalt fiber.
5. The high-strength corrosion-resistant concrete for the engineering pile as claimed in claim 1, wherein: the specific surface area of the attapulgite is more than 25 square meters per gram, and the particle size of the attapulgite is not more than 50 mu m.
6. The high-strength corrosion-resistant concrete for the engineering pile as claimed in claim 5, wherein: the particle size of the micro silica fume is not more than 25 mu m, the particle size of the fine aggregate is not more than 5mm, and the particle size of the coarse aggregate is 5-25 mm.
7. The high-strength corrosion-resistant concrete for the engineering pile according to claim 1, wherein the preparation method of the modified anticorrosive material comprises the following steps: adding ethanol 5-8 times of the weight of dimethylaminoethanol into dimethylaminoethanol and dodecyl alcohol, stirring for at least 20min, adding attapulgite, mixing uniformly, and drying the materials at 40-60 ℃ for at least 120min to obtain the modified anticorrosive material.
8. A method for preparing high-strength corrosion-resistant concrete for engineering piles according to any one of claims 1 to 7, comprising the steps of:
s1 mixing: weighing coarse aggregate according to a set proportion, adding fine aggregate and micro-silica fume, and uniformly mixing to obtain powder;
s2 concrete preparation: weighing water according to a set proportion, stirring, adding the external feeding material, the modified anticorrosive material and the powder prepared in the step S1, stirring for 3-6min, adding cement, and continuously stirring for 2-5min to prepare the high-strength corrosion-resistant concrete for the engineering pile.
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| CN101062852A (en) * | 2007-04-13 | 2007-10-31 | 俞锡贤 | Highly-effective anti-cracking impervious agent and production method thereof |
| KR101662711B1 (en) * | 2016-02-04 | 2016-10-18 | 숌부르크코리아(유) | Mineral wet primer compositions for waterproofing concrete structure, polyurea waterproofing method therewith |
| CN107602023A (en) * | 2017-10-17 | 2018-01-19 | 南京建高新材料科技有限公司 | A kind of high volume fly ash concrete and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062852A (en) * | 2007-04-13 | 2007-10-31 | 俞锡贤 | Highly-effective anti-cracking impervious agent and production method thereof |
| KR101662711B1 (en) * | 2016-02-04 | 2016-10-18 | 숌부르크코리아(유) | Mineral wet primer compositions for waterproofing concrete structure, polyurea waterproofing method therewith |
| CN107602023A (en) * | 2017-10-17 | 2018-01-19 | 南京建高新材料科技有限公司 | A kind of high volume fly ash concrete and preparation method thereof |
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