CN114276750B - Concrete surface layer reinforcing material and preparation and construction method thereof - Google Patents
Concrete surface layer reinforcing material and preparation and construction method thereof Download PDFInfo
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- CN114276750B CN114276750B CN202111500988.4A CN202111500988A CN114276750B CN 114276750 B CN114276750 B CN 114276750B CN 202111500988 A CN202111500988 A CN 202111500988A CN 114276750 B CN114276750 B CN 114276750B
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 239000002344 surface layer Substances 0.000 title claims abstract description 22
- 239000012779 reinforcing material Substances 0.000 title claims abstract description 20
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 230000001680 brushing effect Effects 0.000 claims abstract description 25
- 239000007849 furan resin Substances 0.000 claims abstract description 21
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 239000004593 Epoxy Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000003960 organic solvent Substances 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 51
- 238000005303 weighing Methods 0.000 claims description 46
- 238000005507 spraying Methods 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 36
- 239000011259 mixed solution Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 17
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 17
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 claims description 16
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 claims description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims description 16
- 239000004115 Sodium Silicate Substances 0.000 claims description 16
- 229920001223 polyethylene glycol Polymers 0.000 claims description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 16
- 229960001124 trientine Drugs 0.000 claims description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 15
- 229910052708 sodium Inorganic materials 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 8
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 claims description 5
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 claims description 5
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 239000004111 Potassium silicate Substances 0.000 claims description 4
- WPUINVXKIPAAHK-UHFFFAOYSA-N aluminum;potassium;oxygen(2-) Chemical compound [O-2].[O-2].[Al+3].[K+] WPUINVXKIPAAHK-UHFFFAOYSA-N 0.000 claims description 4
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052912 lithium silicate Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 claims description 4
- 229960003493 octyltriethoxysilane Drugs 0.000 claims description 4
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 20
- 230000003014 reinforcing effect Effects 0.000 abstract description 12
- 230000002209 hydrophobic effect Effects 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000006482 condensation reaction Methods 0.000 abstract description 3
- 238000006253 efflorescence Methods 0.000 abstract description 3
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 3
- 239000005543 nano-size silicon particle Substances 0.000 abstract description 3
- 206010037844 rash Diseases 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 239000012670 alkaline solution Substances 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 22
- 239000000126 substance Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000007405 data analysis Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- -1 such as the breakage Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002454 metastable transfer emission spectrometry Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- Aftertreatments Of Artificial And Natural Stones (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a concrete surface layer reinforcing material and a preparation and construction method thereof, wherein the concrete surface layer reinforcing material comprises a component A, a component B and a component C; wherein: the component A is prepared from 45-50% of organic silicon, 28-30% of epoxy resin, 12-15% of furan resin and the balance of organic solvent according to weight percentage; the component B is a mixed aqueous solution of silicate and meta-aluminate; the component C is an epoxy curing agent. The low molecular weight organosilicon material can penetrate into a concrete capillary channel, and is subjected to hydrolytic condensation reaction under the action of an organic solvent and a silicate alkaline solution (component B) to generate hydrophobic nano silicon dioxide, so that the capillary channel of the concrete can be fully filled, the reinforcing effect is achieved, and the problems of efflorescence and durability of organosilicon resin materials in the conventional reinforcing material can be solved. The component A, the component B and the component C are constructed in a combined brushing mode, and the reinforcing effect is obvious.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a concrete surface layer reinforcing material and a preparation and construction method thereof.
Background
When concrete is poured, bleeding, improper maintenance, environmental erosion and the like all cause the degradation of the structure of the concrete surface layer, such as the breakage, sand removal, moss breeding and the like of the concrete surface layer. The concrete surface layer reinforced material is used for compacting and reinforcing the concrete surface layer, so that the problem caused by the deterioration of the concrete surface layer can be effectively solved. However, most of the concrete surface layer reinforcing materials are silicate materials, and therefore, the durability is poor, and problems such as concrete saltpetering are easily caused. In order to solve the problems, related researches are carried out in China to solve the problems of poor durability, saltpetering and the like of the silicate concrete surface layer sealing reinforcing material. For example, the patent ' a surface reinforcing sealant for cement concrete ' (ZL 03116794.2) ' a concrete surface reinforcing sealant and a preparation method thereof ' (CN 106007801A) ' in addition to the use of silicate to seal concrete capillary channels, the patent also adds hydrophobic components to inhibit water from entering and exiting the concrete, thereby achieving the purposes of improving the durability of the concrete and solving the problems of efflorescence and the like.
However, the hydrophobic component added in these researches is to form a hydrophobic film on the surface layer or in the capillary channels of the concrete, and the low molecular silicone can penetrate into the capillary channels of the concrete, but the durability is poor, and the polymerized silicone is too large in molecular weight and poor in permeability, so that the hydrophobic film is mostly formed on the surface of the concrete and is easily damaged.
Disclosure of Invention
In view of this, the present invention provides a concrete surface layer reinforcing material and a preparation and construction method thereof, so as to solve the problems proposed in the background art, and the concrete surface layer reinforcing material not only has an effect of reinforcing the surface densification of concrete, but also has good permeability and durability of the hydrophobic component.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses a concrete surface layer reinforcing material which comprises a component A, a component B and a component C; wherein: the component A is prepared from 45-50% of organic silicon, 28-30% of epoxy resin, 12-15% of furan resin and the balance of organic solvent according to weight percentage; the component B is a mixed aqueous solution of silicate and meta-aluminate; the component C is an epoxy curing agent.
As a further scheme of the invention: in the component B, the mixed aqueous solution is prepared from 10-40% of silicate, 5-10% of meta-aluminate and the balance of water according to weight percentage.
As a further scheme of the invention: in the component A, the organic silicon is at least one of methyl triethoxysilane, isobutyl triethoxysilane and octyl triethoxysilane.
As a further scheme of the invention: in the component A, the epoxy resin is prepared from polyethylene glycol diglycidyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane (1.8-2): 1 by weight ratio.
As a further scheme of the invention: in the component A, the organic solvent is at least one of methanol and ethanol.
As a further scheme of the invention: in the component B, the silicate is at least one of sodium silicate, potassium silicate, lithium silicate and magnesium fluosilicate; the metaaluminate is at least one of sodium metaaluminate, potassium metaaluminate and lithium metaaluminate.
As a further scheme of the invention: in the component C, the epoxy curing agent is at least one of triethylene tetramine, isophorone diamine and m-xylylenediamine.
The invention also discloses a preparation method of the concrete surface layer reinforcing material, which comprises the following steps:
s1, weighing organic silicon, epoxy resin, furan resin and an organic solvent according to the mass percentage, and uniformly stirring at normal temperature to obtain a component A;
s2, weighing silicate, aluminate and water according to the mass percentage, and stirring and dissolving at normal temperature to obtain a component B;
s3, weighing the epoxy curing agent as the component C for later use.
The invention also discloses a construction method of the concrete surface layer reinforcing material, which comprises the following steps:
(1) According to a calculation formula of epoxy resin dosage/epoxy equivalent = epoxy curing agent dosage/active hydrogen equivalent (the calculation formula is the prior art, is from epoxy curing agent and additive, edited by hoyuming, chemical industry press, and is not described herein), the ratio of the component a to the component C is calculated by taking 100: (2.7-3.3) to obtain a mixed solution;
(2) Repeatedly brushing or spraying the component B on the surface of the concrete for 2-5 times at intervals of 12-24h, wherein the dosage of the component B is 0.2-0.5kg/m 3 ；
(3) After the last time of brushing or spraying the component B, waiting for 6 to 12 hours, brushing or spraying the mixed solution, wherein the dosage is 0.1 to 0.2kg/m 3 。
Compared with the prior art, the invention has the beneficial effects that:
1. the low molecular weight organosilicon material can permeate into a concrete capillary channel, and is subjected to hydrolytic condensation reaction under the action of an organic solvent and a silicate alkaline solution (component B) to generate hydrophobic nano silicon dioxide, so that the concrete capillary channel can be fully filled to achieve the enhancement effect, and the problems of efflorescence and durability of organosilicon resin materials in the traditional enhancement material can be solved; wherein, the methanol and the ethanol not only play the role of a solvent, but also play the role of a catalyst to promote the high-efficiency proceeding of the hydrolytic condensation reaction.
2. The low molecular weight epoxy resin, the furan resin and the epoxy curing agent in the invention permeate into the capillary channel of the concrete to be cured, and the formed cured product has the characteristics of high strength and no shrinkage, so that the problem of volume shrinkage caused by solvent volatilization in the traditional low-solid content inorganic reinforced material can be effectively solved, and the surface layer of the concrete is more compact;
3. the invention selects the epoxy resin with excellent bonding performance to be compounded with the organic silicon to generate synergistic action, not only can effectively improve the adhesive capacity of the hydrophobic nano silicon dioxide in a concrete capillary channel, but also can improve the durability of the epoxy resin.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following examples and comparative examples employ the following raw material specific information:
the component A comprises:
organosilicon: methyltriethoxysilane, available from Qufuyi order of chemistry, trade name MTES;
isobutyltriethoxysilane, available from Shandong Moore chemical Co., ltd under the brand name 101;
octyl triethoxysilane, available from Shandong Huanjing chemical Co., ltd, under the trade name KH832;
epoxy resin:
polyethylene glycol diglycidyl ether 270, new technologies ltd, anhui, under the designation XY215;
gamma-glycidyl ether oxypropyltrimethoxysilane, available from Beirui chemical Co., ltd, mount Huangshan.
The trade mark is KH560;
furan resin: from Zibo Furan anticorrosive materials Co Ltd
Organic solvent: methanol, purchased from Shandong Shuo chemical industry,
ethanol, purchased from jingning bocheng chemical ltd;
and B component:
silicate salt: sodium silicate, available from jonan xin senzai chemical ltd under the designation xinsen 001;
potassium silicate, purchased from Suzhou Tengtai chemical technology Co., ltd, under the brand name Tengtai 09;
lithium silicate, available from Shandong Xintianlong Biotech Co., ltd, under the trade designation Xintianlong HFD-348;
magnesium fluosilicate, available from Shandong Xintianlong Biotech Co., ltd., under the brand name 3188;
meta-aluminate: sodium metaaluminate, purchased from Jinsheng chemical Limited, jinsheng 001;
potassium metaaluminate, purchased from laboratories, preparation method reference: wangguoqing main edition, inorganic chemistry.
Beijing: chinese medicine science and technology press, 2008.08;
lithium metaaluminate, self-made in laboratories, preparation method reference: preparation of lithium metaaluminate as electrolyte material of molten carbonate fuel cell [ J ] power station system engineering, 1994;
and (C) component:
triethylene tetramine, shandong Yinhong chemical Co., ltd, brand name TETA;
isophoronediamine, degussa chemical ltd, under the trademark IPDA;
m-xylylenediamine, fuhui New materials, inc., trade name MXDA.
It is understood that the above raw material reagents are only examples of some specific embodiments of the present invention, so as to make the technical scheme of the present invention more clear, and do not represent that the present invention can only adopt the above reagents, specifically, the scope in the claims is subject to. In addition, "parts" described in examples and comparative examples mean parts by weight unless otherwise specified.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
The following examples and comparative examples were all prepared with the components at ambient temperature and the application temperature was in the range of 5-35 ℃.
Example 1
Preparing a component A: weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain the component A.
Preparing a component B: weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain the component B.
Preparing a component C: weighing 2.8 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the mixture is waited for 12 hours, then 100 parts of the component A and 2.8 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete with the dosage of 0.2kg/m 3 。
Example 2
Preparing a component A: weighing 45 parts of methyltriethoxysilane, 18 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 12 parts of furan resin and 15 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 10 parts of sodium silicate, 5 parts of sodium metaaluminate and 85 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.7 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
uniformly brushing or spraying the component B on the concrete surface for 2 times at intervals of 24h by adopting a brushing or spraying mode, wherein the dosage of each time is 0.2kg/m 3 (ii) a After the last spraying of the component B, the time is 12 hours, 100 parts of the component A and 2.7 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of concrete with the dosage of 0.1kg/m 3 。
Example 3
Preparing a component A: weighing 47 parts of methyltriethoxysilane, 19 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 13 parts of furan resin and 11 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 30 parts of sodium silicate, 7 parts of sodium metaaluminate and 63 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.7 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
uniformly brushing or spraying the component B on the surface of the concrete for 3 times at intervals of 24 hours by adopting a brushing or spraying mode, wherein the dosage of the component B is 0.3kg/m 3 (ii) a After the last spraying of the component B, the mixture is waited for 12 hours, then 100 parts of the component A and 2.8 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete with the dosage of 0.15kg/m 3 。
Example 4
Preparing a component A: weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 10 parts of sodium silicate, 5 parts of sodium metaaluminate and 85 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.8 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 2 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.2kg/m 3 (ii) a After the last spraying of the component B, the mixture is stirred for 12 hours, 100 parts of the component A and 2.8 parts of the component C are uniformly mixed to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete at a dosage of 0.2kg/m 3 。
Example 5
Preparing a component A: weighing 45 parts of methyltriethoxysilane, 18 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 12 parts of furan resin and 15 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.7 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the mixture is waited for 12 hours, then 100 parts of the component A and 2.7 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete with the dosage of 0.1kg/m 3 。
Example 6
Preparing a component A: weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and stirring and mixing uniformly to obtain a component A;
preparing a component B: weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.8 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 12 hours each time, and the dosage is 0.5kg/m each time 3 (ii) a After the last spraying of the component B, waiting for 6 hours, mixing and stirring 100 parts of the component A and 2.8 parts of the component C uniformly to prepare a mixed solution, and brushing or spraying the prepared mixed solution on the surface of the concrete with the dosage of 0.2kg/m 3 。
Example 7
Preparing a component A: weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 20 parts of sodium silicate, 20 parts of lithium silicate, 10 parts of potassium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.8 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the mixture is waited for 12 hours, then 100 parts of the component A and 2.8 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete with the dosage of 0.2kg/m 3 。
Example 8
Preparing a component A: weighing 30 parts of methyltriethoxysilane, 10 parts of isobutyl triethoxysilane, 10 parts of octyl triethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: weighing 2.8 parts of triethylene tetramine for later use.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the time is 12 hours, 100 parts of the component A and 2.8 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of concrete with the dosage of 0.2kg/m 3 。
Example 9
Preparing a component A: weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of ethanol, and uniformly stirring to obtain a component A;
preparing a component B: weighing 20 parts of potassium silicate, 20 parts of magnesium fluosilicate, 10 parts of lithium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
preparing a component C: and weighing 60 parts of triethylene tetramine, 20 parts of isophorone diamine and 20 parts of m-xylylenediamine, and uniformly mixing to obtain the component C.
The construction method of the reinforced material comprises the following steps:
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 18 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the time is 9 hours, 100 parts of the component A and 3.3 parts of the component C are mixed and stirred uniformly to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of concrete with the dosage of 0.2kg/m 3 。
Comparative example 1
Weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a reinforcing component;
the construction method comprises the following steps:
the reinforcing components are uniformly coated or sprayedUniformly coating or spraying on the surface of concrete for 5 times at intervals of 24h, wherein the dosage of each time is 0.5kg/m 3 。
Comparative example 2
Weighing 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring and mixing to obtain a component A;
weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
and 5.7 parts of triethylene tetramine is weighed to obtain a component C for later use.
The component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, the mixture is stirred for 12 hours, 100 parts of the component A and 5.7 parts of the component C are uniformly mixed to prepare a mixed solution, and the mixed solution is coated or sprayed on the surface of the concrete at a dosage of 0.2kg/m 3 。
Comparative example 3
Weighing 50 parts of methyltriethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain a component A;
weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
the component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 24 hours each time, and the dosage of each time is 0.5kg/m 3 ；
After the last time of spraying the component B, the time is required to be 12 hours, so that the component A can be brushed or sprayed on the surface of the component B once, and the using amount is 0.2kg/m 3 。
Comparative example 4
Weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring and mixing to obtain a component A;
and weighing 2.8 parts of triethylene tetramine to obtain a component C.
100 parts of component A and 2.8 parts of component CMixing and stirring uniformly to obtain mixed liquor, and brushing or spraying the mixed liquor on the surface of concrete, wherein the dosage of the mixed liquor is 0.2kg/m 3 。
Comparative example 5
Weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to prepare a component A;
weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
and weighing 2.8 parts of triethylene tetramine to obtain a component C for later use.
The component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 48 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, waiting for 24 hours, mixing and stirring 100 parts of the component A and 2.8 parts of the component C uniformly to prepare a mixed solution, and brushing or spraying the prepared mixed solution on the surface of the concrete at a dosage of 0.2kg/m 3 。
Comparative example 6
Weighing 50 parts of methyltriethoxysilane, 20 parts of polyethylene glycol diglycidyl ether, 10 parts of gamma-glycidyl ether oxypropyltrimethoxysilane, 15 parts of furan resin and 5 parts of methanol, and uniformly stirring to obtain a component A;
weighing 40 parts of sodium silicate, 10 parts of sodium metaaluminate and 50 parts of water, and stirring for dissolving to obtain a component B;
and weighing 2.8 parts of triethylene tetramine to obtain a component C for later use.
The component B is uniformly brushed or sprayed on the concrete surface for 5 times by adopting a brushing or spraying mode, the interval is 6 hours each time, and the dosage of each time is 0.5kg/m 3 (ii) a After the last spraying of the component B, waiting for 3 hours, mixing and stirring 100 parts of the component A and 2.8 parts of the component C uniformly to prepare a mixed solution, and brushing or spraying the prepared mixed solution on the surface of the concrete with the dosage of 0.2kg/m 3 。
The concrete skins constructed in the above examples 1 to 9 and comparative examples 1 to 4 were subjected to the tests according to the test items and test standards shown in table 1, and the test results are shown in table 2.
TABLE 1 test items and standards
TABLE 2 test results
| Item | 28d rebound value/MPa | Water absorption ratio/%) | Permeability/mm |
| Example 1 | 39.7 | 3.4 | 0.5 |
| Example 2 | 35.6 | 7.8 | 1.6 |
| Example 3 | 37.3 | 5.1 | 1.2 |
| Example 4 | 35.9 | 4.3 | 0.8 |
| Example 5 | 38.2 | 5.7 | 1.1 |
| Example 6 | 36.1 | 4.6 | 1.3 |
| Example 7 | 40.1 | 3.3 | 0.5 |
| Example 8 | 39.6 | 2.9 | 0.4 |
| Example 9 | 39.8 | 3.4 | 0.5 |
| Comparative example 1 | 35.2 | 23.3 | 2.4 |
| Comparative example 2 | 35.8 | 20.7 | 2.3 |
| Comparative example 3 | 35.4 | 8.7 | 1.8 |
| Comparative example 4 | 33.5 | 5.9 | 1.1 |
| Comparative example 5 | 36.7 | 8.8 | 1.8 |
| Comparative example 6 | 34.2 | 10.9 | 1.9 |
| Blank test block | 30.8 | 100 | 3.1 |
Note: and the blank test block is a concrete bare layer.
From the data in table 2, the concrete surface reinforcing material of the present invention has good surface reinforcing and waterproof effects. As can be seen from the comparative data analysis of examples 1-3, the higher the effective component of the reinforcing agent is, the larger the amount is, the better the reinforcing effect and the waterproof performance are.
As can be seen from the comparative data analysis of example 1 and comparative examples 1-4, component A has a better waterproof effect, component B has a better reinforcing effect, and when component A, component B and component C are used in a composite manner, the components act synergistically to produce an effect far superior to that of each component when used alone.
From the comparative data analysis of example 1, example 6, comparative example 5 and comparative example 6, it can be seen that the shorter the time interval of each spraying operation, the less the amount of the material absorbed and reacted in the concrete structure, resulting in deterioration of various properties; the longer the construction interval, the more completely the component B is absorbed in the concrete structure, the less the silicate solution can be absorbed by the mixed liquid of the component A and the component C, the less the amount of hydrophobic nano organic silicon particles is formed, and the reinforcing effect and the waterproof effect are deteriorated.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all the equivalent changes made within the scope of the claims of the present application are the protection scope of the claims of the present application.
Claims (5)
1. A concrete surface layer reinforcing material is characterized by comprising a component A, a component B and a component C; wherein:
the component A is prepared from 45-50% of organic silicon, 28-30% of epoxy resin, 12-15% of furan resin and the balance of organic solvent according to weight percentage;
the component B is a mixed aqueous solution of silicate and meta-aluminate;
the component C is an epoxy curing agent;
the construction method of the concrete surface layer reinforcing material comprises the following steps:
(1) Mixing the component A and the component C in a ratio of 100: (2.7-3.3) to obtain a mixed solution;
(2) Repeatedly coating or spraying the component B on the concrete surface for 2-5 times at an interval of 12-24h, wherein the dosage of the component B is 0.2-0.5kg/m 3 ；
(3) After the last time of brushing or spraying the component B, waiting for 6 to 12 hours, brushing or spraying the mixed solution, wherein the dosage is 0.1 to 0.2kg/m 3 ；
In the component A, the organic silicon is selected from at least one of methyl triethoxysilane, isobutyl triethoxysilane and octyl triethoxysilane;
in the component A, the epoxy resin is prepared from polyethylene glycol diglycidyl ether, gamma-glycidyl ether oxypropyl trimethoxy silane (1.8-2): 1 by weight ratio;
in the component B, the mixed aqueous solution is prepared from 10-40% of silicate, 5-10% of meta-aluminate and the balance of water according to weight percentage.
2. The concrete surface reinforcing material of claim 1, wherein in the component A, the organic solvent is at least one of methanol and ethanol.
3. The concrete surface reinforcing material of claim 1, wherein in the B component, the silicate is at least one of sodium silicate, potassium silicate, lithium silicate and magnesium fluosilicate; the metaaluminate is at least one of sodium metaaluminate, potassium metaaluminate and lithium metaaluminate.
4. The concrete surface layer reinforcing material of claim 1, wherein in the component C, the epoxy curing agent is at least one of triethylene tetramine, isophorone diamine and m-xylylenediamine.
5. A method for preparing a concrete surface reinforcing material according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, weighing organic silicon, epoxy resin, furan resin and an organic solvent according to the mass percentage, and uniformly stirring at normal temperature to obtain a component A;
s2, weighing silicate, meta-aluminate and water according to the mass percentage, and stirring and dissolving at normal temperature to obtain a component B;
s3, weighing the epoxy curing agent as the component C for later use.
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| CN101407428A (en) * | 2008-08-12 | 2009-04-15 | 广州秀珀化工股份有限公司 | Concrete superficial hardener and construction method thereof |
| CN102557726A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | High-permeability multi-effect concrete water-proofing agent and preparation method thereof |
| CN106007801A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Surface enhanced sealant for concrete and preparation method thereof |
| CN109913095A (en) * | 2019-03-19 | 2019-06-21 | 株洲飞鹿高新材料技术股份有限公司 | A kind of two-in-one permeability modification concrete surface corrosion-resistant epoxy paint and its preparation method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407428A (en) * | 2008-08-12 | 2009-04-15 | 广州秀珀化工股份有限公司 | Concrete superficial hardener and construction method thereof |
| CN102557726A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | High-permeability multi-effect concrete water-proofing agent and preparation method thereof |
| CN106007801A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Surface enhanced sealant for concrete and preparation method thereof |
| CN109913095A (en) * | 2019-03-19 | 2019-06-21 | 株洲飞鹿高新材料技术股份有限公司 | A kind of two-in-one permeability modification concrete surface corrosion-resistant epoxy paint and its preparation method and application |
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