CN108101582A - A kind of hybrid inorganic-organic concrete impregnating agent and preparation method - Google Patents
A kind of hybrid inorganic-organic concrete impregnating agent and preparation method Download PDFInfo
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- CN108101582A CN108101582A CN201711238198.7A CN201711238198A CN108101582A CN 108101582 A CN108101582 A CN 108101582A CN 201711238198 A CN201711238198 A CN 201711238198A CN 108101582 A CN108101582 A CN 108101582A
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- ethyl orthosilicate
- concrete
- impregnating agent
- tartaric acid
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011975 tartaric acid Substances 0.000 claims abstract description 30
- 235000002906 tartaric acid Nutrition 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 23
- 229920002545 silicone oil Polymers 0.000 claims abstract description 23
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 abstract description 16
- 239000011148 porous material Substances 0.000 abstract description 10
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 abstract description 6
- 239000011253 protective coating Substances 0.000 abstract description 5
- 230000007812 deficiency Effects 0.000 abstract description 4
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 2
- 239000011147 inorganic material Substances 0.000 abstract description 2
- 239000011368 organic material Substances 0.000 abstract description 2
- 238000009396 hybridization Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 19
- 238000001035 drying Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 206010013786 Dry skin Diseases 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 244000137852 Petrea volubilis Species 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- GUPPESBEIQALOS-UHFFFAOYSA-L calcium tartrate Chemical compound [Ca+2].[O-]C(=O)C(O)C(O)C([O-])=O GUPPESBEIQALOS-UHFFFAOYSA-L 0.000 description 2
- 235000011035 calcium tartrate Nutrition 0.000 description 2
- 239000001427 calcium tartrate Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 230000000246 remedial effect Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- XQSFXFQDJCDXDT-UHFFFAOYSA-N hydroxysilicon Chemical compound [Si]O XQSFXFQDJCDXDT-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- -1 wherein Chemical compound 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5035—Silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
Abstract
A kind of organic inorganic hybridization concrete impregnating agent and preparation method, including ethyl orthosilicate, absolute ethyl alcohol, tartaric acid, end hydroxyl silicone oil, water and Nano silica sol, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:(1~2):(0.025~0.030), the content of end hydroxyl silicone oil are the 30%~35% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, the content of Nano silica sol is the 10%~15% of ethyl orthosilicate quality.By organic material and the hydridization of inorganic material, impregnating agent is prepared, the performance between organic and inorganic component is optimized into complementation, compensates for the deficiency of organosilicon protective coating, on the one hand improves the hydrophobic performance of concrete surface layer；The pore structure on another aspect reinforcing concrete surface layer, improves its watertightness, air-tightness, blocks the interior path that corrosive medium penetrates into concrete, so as to improve concrete durability, has more comprehensively protection effect to concrete structure.
Description
Technical field
The present invention discloses a kind of concrete impregnating agent and preparation method, particularly a kind of hybrid inorganic-organic concrete leaching
Stain agent and preparation method.
Background technology
The development of concrete experienced from low to high or even the process of superhigh intensity, but a large amount of concrete structures is too early
Certificate of destruction high intensity is not meant to high-durability.Due to durability deficiency, concrete structures premature deterioration so that destroy
The event of avalanche is commonplace at home and abroad, thereby results in reinforcing, repair, removes that the expense rebuild is huge, and regulation effect is simultaneously
Not very significantly.American scholar Sitter once used " five times of laws " pictute importance of concrete structure durability：I.e.
Design phase saves 1 dollar to the requisite measure that reinforcing bar protects, it is meant that adopting remedial measures during steel bar corrosion, it is beautiful to spend more expense 5
Member, adopting remedial measures when concrete surface cracks along muscle will be 25 dollars additional, and it is beautiful to add maintenance cost 125 when seriously destroying
Member.Indicated above, the deficiency of concrete structure durability can bring quite serious destruction, and China is in economic development
High speed period promotes the durability of concrete structure infrastructure, has become extremely urgent task.
In terms of its durability is improved using concrete surface layer protection, organosilicon protective coating is good, ventilative with hydrophobicity
Property it is good, thermal stability is good, weatherability is excellent, applicability is extensive the advantages that, be current application at most, most ripe surface layer protection material
Material.But since the hydrophobic membrane that organosilicon protective coating is formed only is attached on the stomata of base material and obstructing air holes are unable to,
The pore structure on base material surface layer cannot be strengthened, compactness does not improve, and air-tightness is poor, it is impossible to applied to have hydraulic pressure environment or
It is the concrete structure protection under external force effect；And its volatility is larger, long-term protection effect is poor, and full protection performance is simultaneously
It is not ideal enough.
The content of the invention
It is not ideal enough for the organosilicon protective coating barrier propterty of concrete surface layer of the prior art mentioned above
The shortcomings that, the present invention provides a kind of hybrid inorganic-organic concrete impregnating agent and preparation method, uses using ethyl orthosilicate
As main material, tartaric acid is as catalyst, while catalytic effect is played, brush/be sprayed at concrete surface layer after, winestone
Acid can be chemically reacted with the calcium hydroxide in concrete, generate calcium tartrate not soluble in water, can reduce concrete pore
Rate improves its compactness, the pore structure on further reinforcing concrete surface layer.
The present invention solve its technical problem the technical solution adopted is that：A kind of hybrid inorganic-organic concrete impregnating agent, leaching
Stain agent includes ethyl orthosilicate, absolute ethyl alcohol, tartaric acid, end hydroxyl silicone oil, water and Nano silica sol, wherein, ethyl orthosilicate,
The molar ratio of absolute ethyl alcohol and tartaric acid is 1:(1~2):(0.025~0.030), the content of end hydroxyl silicone oil is positive silicic acid second
The molar ratio of the 30%-35% of ester quality, water and ethyl orthosilicate is 2:1, the content of Nano silica sol is ethyl orthosilicate matter
The 10%-15% of amount.
A kind of preparation method of hybrid inorganic-organic concrete impregnating agent described above, this method comprise the following steps：
Step S1, it is mixed：Ethyl orthosilicate, absolute ethyl alcohol and water are mixed in proportion, and under 25~30 DEG C of parts
Stirring 40~50 minutes is uniformly mixed it, and catalyst tartaric acid is slowly added in whipping process, and tartaric acid is being stirred according to proportioning
It mixes in mixed process and is uniformly added into；
Step S2, hydridization：End hydroxyl silicone oil is added in the mixture of step S1 and carries out hydridization, and in 25~30 DEG C of conditions
Lower stirring 20~30 minutes, is uniformly mixed it；
Step S3：Nano silica sol is added in the mixture of step S2, is stirred 15~20 minutes under the conditions of 25~30 DEG C,
It is uniformly mixed, final products are obtained after still aging.
The present invention solves the technical solution that its technical problem uses and further comprises：
The beneficial effects of the invention are as follows：The present invention prepares organic and inorganic by organic material and the hydridization of inorganic material
Performance between organic and inorganic component is optimized complementation, compensates for the deficiency of organosilicon protective coating by hydridization concrete impregnating agent,
On the one hand the method brushed/sprayed by surface layer improves the hydrophobic performance of concrete surface layer；Another aspect reinforcing concrete surface layer
Pore structure, improve its watertightness, air-tightness, block corrosive medium penetrate into concrete interior path, so as to improve coagulation
Native durability has more comprehensively protection effect to concrete structure.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Description of the drawings
Fig. 1 is preparation flow schematic diagram of the present invention.
Specific embodiment
The present embodiment is the preferred embodiment for the present invention, other its all principles and basic structure are identical or near with the present embodiment
As, within the scope of the present invention.
The present invention mainly protects a kind of hybrid inorganic-organic concrete impregnating agent, mainly includes ethyl orthosilicate, anhydrous
Ethyl alcohol, tartaric acid, end hydroxyl silicone oil, water and Nano silica sol (in the present embodiment, are not particularly limited Nano silica sol, only
It is sol particle in nanoscale), wherein, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:(1~2):
(0.025~0.030), the content of end hydroxyl silicone oil are the 30%~35% of ethyl orthosilicate quality, water and ethyl orthosilicate
Molar ratio is 2:1, the content of Nano silica sol is the 10%~15% of ethyl orthosilicate quality.
Attached drawing 1 is refer to, the present invention protects a kind of preparation method of hybrid inorganic-organic concrete impregnating agent simultaneously, should
Method comprises the following steps：
Step S1：It is mixed：Ethyl orthosilicate, absolute ethyl alcohol and water are mixed in proportion, and in 25~30 DEG C of conditions
Lower stirring 40~50 minutes, is uniformly mixed it, and catalyst tartaric acid is slowly added in whipping process, and tartaric acid exists according to proportioning
It is uniformly added into during being stirred, i.e. the addition duration of tartaric acid is the time of entire whipping process；
Step S2：Hydridization：End hydroxyl silicone oil is added in the mixture of step S1 and carries out hydridization, and in 25~30 DEG C of conditions
Lower stirring 20~30 minutes, is uniformly mixed it；
Step S3：Nano silica sol is added in the mixture of step S2,15~20 points are stirred under the conditions of 25~30 DEG C
Clock is uniformly mixed it, and final products are obtained after still aging.
Using ethyl orthosilicate as main material in the present invention, molecular weight is small, and viscosity is low, and good penetrability, stability is strong, makees
Positive silicic acid is generated for inorganic component hydrolyzable, generation silica dioxide gel can be condensed in concrete pore, filling pore improves
The compactness of concrete surface layer.
Different from the catalyst that hybrid material is often selected, the present invention, as catalyst, is playing catalysis effect using tartaric acid
While fruit, brush/be sprayed at concrete surface layer after, tartaric acid can be chemically reacted with the calcium hydroxide in concrete,
Calcium tartrate not soluble in water is generated, concrete pore rate can be reduced, improves its compactness, further reinforcing concrete surface layer
Pore structure.
For end hydroxyl silicone oil as organic component, surface tension is relatively low and has hydrophobic grouping methyl, molecular structure class
The polycondensation product of ethyl orthosilicate is similar to, in it with good intersolubility, the hydrophobicity of impregnating agent after hydridization can be greatly improved
Energy.
The addition of Nano silica sol makes impregnating agent form the rough surface of nanostructured after gel, further improves
The hydrophobic performance of coating hinders Korrosionsmedium intrusion inside concrete, good protective effect is realized to concrete.
It below will the present invention will be further described with several specific examples：
Embodiment one：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1:0.025, end
The content of hydroxy silicon oil is the 30% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content is the 10% of ethyl orthosilicate quality.
Embodiment two：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.1:0.026,
The content of end hydroxyl silicone oil is the 31% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 11%.
Embodiment three：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.2:0.029,
The content of end hydroxyl silicone oil is the 34% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 14%.
Example IV：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.3:0.027,
The content of end hydroxyl silicone oil is the 32% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 12%.
Embodiment five：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.4:0.028,
The content of end hydroxyl silicone oil is the 33% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 13%.
Embodiment six：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.5:0.028,
The content of end hydroxyl silicone oil is the 33% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 13%.
Embodiment seven：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.6:0.027,
The content of end hydroxyl silicone oil is the 32% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 12%.
Embodiment eight：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.7:0.028,
The content of end hydroxyl silicone oil is the 34% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 14%.
Embodiment nine：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.8:0.027,
The content of end hydroxyl silicone oil is the 31% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 11%.
Embodiment ten：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:1.9:0.030,
The content of end hydroxyl silicone oil is the 35% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 15%.
Embodiment nine：In the present embodiment, the molar ratio of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid is 1:2.0:0.025,
The content of end hydroxyl silicone oil is the 30% of ethyl orthosilicate quality, and the molar ratio of water and ethyl orthosilicate is 2:1, Nano silica sol
Content be ethyl orthosilicate quality 10%.
The physical property of the impregnating agent of the present invention：
| Color | Gel time |
| White | 15-17h |
Impregnating agent processing concrete, the performance test of concrete paste specimen：
1. water absorption rate test
The concrete paste specimen (W/C=0.35) polished with the impregnating agent impregnation prepared through surface, dries in the air at room temperature
Put 3d, in drying box 70 DEG C of dryings for 24 hours, and record its quality, then test specimen immersion is weighed afterwards for 24 hours in water, calculates and inhales
Water rate.
2. contact angle is tested
With the impregnating agent prepared be painted on through surface grinding process C30 concrete samples (100mm × 100mm ×
100mm), hang at room temperature 3 days, in drying box after 70 DEG C of dryings for 24 hours, carry out contact angle test, detect its hydrophobicity performance.
3. penetration depth is tested
The C30 concrete samples prepared (100mm × 100mm × 100mm) are placed 3 days at room temperature, in drying box
In 70 DEG C of dryings for 24 hours, polished the oxide layer on removal concrete sample surface, grease with sand paper, after the impregnating agent prepared is passed through
Certain brushing number (1 time, 5 times, 10 times, 15 times) is painted on concrete sample surface respectively, afterwards splits concrete sample
It opens, penetration depth of the measurement impregnating agent in concrete.
4. carbonation properties are tested
The C30 concrete samples prepared (100mm × 100mm × 100mm) are conserved 23 days at the standard conditions, are dried
The moisture of surface of test piece, in drying box 70 DEG C of dryings for 24 hours, polished the removal oxide layer of surface of test piece, grease, used with sand paper
Impregnating agent is evenly applied to surface of test piece by the method for brushing in four times, is hung at room temperature afterwards 3 days, is done for 70 DEG C in drying box
Dry 2h, after by test specimen be put into carbonization case in, gas concentration lwevel is (20 ± 3) %, relative humidity is (70 ± 5) %, temperature
For (20 ± 2) %, test specimen of riving respectively in 3 days, 7d, 14d, 28d, and 1% phenolphthalein alcoholic solution is sprayed in its section, it adopts
With its carbonation depth of electronics vernier caliper measurement.
5. Frozen-thawed cycled performance test
By the C30 concrete samples prepared (100mm × 100mm × 400mm), conserve 23 days, dry under standard conditions
The moisture of surface of test piece, (80 ± 5) DEG C dry the oxidation on removal concrete sample surface of for 24 hours, being polished with sand paper in drying box
Layer, grease, are evenly applied to surface of test piece by colloidal sol using the method for brushing, hang at room temperature afterwards 3 days, in drying in four times
70 DEG C of dry 2h in case, when detecting its reference sound intensity after, test specimen is placed on after being impregnated 4 days in (20 ± 2) DEG C water and weighed, frozen using fast
Method is tested, its opposite jelly elasticity modulus and mass loss rate are detected after 25 Frozen-thawed cycleds.
Test result is as shown in the table：
The water absorption rate of 1 impregnating agent impregnation concrete paste specimen of table
2 impregnating agent of table is painted on the contact angle of C30 concrete samples
| Treated test specimen | Untreated test specimen |
| 130° | 46° |
3 impregnating agent of table is painted on the penetration depth of C30 concrete
| Brushing number (secondary) | 1 | 5 | 10 | 15 |
| Penetration depth (mm) | 5 | 10 | 12 | 15 |
4 impregnating agent of table is painted on the carbonation depth of C30 concrete
| Carbonization time (my god) | Through handling test specimen carbonation depth (mm) | Unprocessed test specimen carbonation depth (mm) |
| 3 | 0 | 1.6 |
| 7 | 0 | 2.3 |
| 14 | 0.1 | 3.6 |
| 28 | 0.1 | 4.0 |
5 impregnating agent of table is painted on anti-freezing property-mass loss rate of C30 concrete
6 impregnating agent of table is painted on anti-freezing property-opposite jelly elasticity modulus of C30 concrete
Result of the test illustrates that the test specimen handled through impregnating agent, block-water performance greatly improves, and permeability is preferable, durable
Property test in terms of, show excellent anti-carbonation and anti-freezing property.In conclusion hybrid inorganic-organic concrete of the present invention
On the one hand impregnating agent can improve the hydrophobic performance of concrete surface layer, on the other hand energy reinforcing concrete surface layer pore structure, blocks
The path of inside concrete is penetrated into aggressivity cut-off, for concrete protection, is remarkably improved its durability.
Claims (5)
1. a kind of hybrid inorganic-organic concrete impregnating agent, it is characterized in that：The impregnating agent includes ethyl orthosilicate, anhydrous
Ethyl alcohol, tartaric acid, end hydroxyl silicone oil, water and Nano silica sol, wherein, mole of ethyl orthosilicate, absolute ethyl alcohol and tartaric acid
Than for 1:(1~2):(0.025~0.030), the content of end hydroxyl silicone oil are the 30%~35% of ethyl orthosilicate quality, water and
The molar ratio of ethyl orthosilicate is 2:1, the content of Nano silica sol is the 10%~15% of ethyl orthosilicate quality.
2. hybrid inorganic-organic concrete impregnating agent according to claim 1, it is characterized in that：The ethyl orthosilicate,
The molar ratio of absolute ethyl alcohol and tartaric acid is 1:1:0.025.
3. hybrid inorganic-organic concrete impregnating agent according to claim 1, it is characterized in that：The end hydroxyl silicone oil
Content be ethyl orthosilicate quality 35%.
4. hybrid inorganic-organic concrete impregnating agent according to claim 1, it is characterized in that：The Nano silica sol
Content be ethyl orthosilicate quality 15%.
5. a kind of preparation method of hybrid inorganic-organic concrete impregnating agent as described in claim 1, it is characterized in that：It is described
Preparation method comprise the following steps：
Step S1, it is mixed：Ethyl orthosilicate, absolute ethyl alcohol and water are mixed in proportion, and stirred under the conditions of 25~30 DEG C
It mixes 40~50 minutes, is uniformly mixed it, catalyst tartaric acid is slowly added in whipping process, tartaric acid is being stirred according to proportioning
It is uniformly added into mixed process；
Step S2, hydridization：End hydroxyl silicone oil is added in the mixture of step S1 and carries out hydridization, and is stirred under the conditions of 25~30 DEG C
It mixes 20~30 minutes, is uniformly mixed it；
Step S3：Nano silica sol is added in the mixture of step S2, stirs 15~20 minutes, makes under the conditions of 25~30 DEG C
It is uniformly mixed, and final products are obtained after still aging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711238198.7A CN108101582A (en) | 2017-11-30 | 2017-11-30 | A kind of hybrid inorganic-organic concrete impregnating agent and preparation method |
Applications Claiming Priority (1)
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