CN116023106A - Reinforced concrete structure repairing material and preparation and use methods thereof - Google Patents
Reinforced concrete structure repairing material and preparation and use methods thereof Download PDFInfo
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- CN116023106A CN116023106A CN202211541552.4A CN202211541552A CN116023106A CN 116023106 A CN116023106 A CN 116023106A CN 202211541552 A CN202211541552 A CN 202211541552A CN 116023106 A CN116023106 A CN 116023106A
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- Prior art keywords
- rock wool
- carbonization
- parts
- defoamer
- reinforced concrete
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- 239000000463 material Substances 0.000 title claims abstract description 126
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000003763 carbonization Methods 0.000 claims abstract description 85
- 239000011490 mineral wool Substances 0.000 claims abstract description 84
- 239000013530 defoamer Substances 0.000 claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002440 industrial waste Substances 0.000 claims abstract description 20
- 239000010878 waste rock Substances 0.000 claims abstract description 12
- 210000002268 wool Anatomy 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 46
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 239000004567 concrete Substances 0.000 claims description 23
- 239000000919 ceramic Substances 0.000 claims description 16
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 15
- 235000012241 calcium silicate Nutrition 0.000 claims description 15
- 238000012423 maintenance Methods 0.000 claims description 15
- 230000001502 supplementing effect Effects 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 13
- 238000005336 cracking Methods 0.000 claims description 13
- 229920000570 polyether Polymers 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 9
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000010000 carbonizing Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 235000001465 calcium Nutrition 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 239000000378 calcium silicate Substances 0.000 claims description 6
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000002910 solid waste Substances 0.000 claims description 6
- 230000002940 repellent Effects 0.000 claims description 5
- 239000005871 repellent Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000004566 building material Substances 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 3
- ARHMMDOXGIIARL-UHFFFAOYSA-N calcium;dihydroxy(dioxido)silane Chemical compound [Ca+2].O[Si](O)([O-])[O-] ARHMMDOXGIIARL-UHFFFAOYSA-N 0.000 claims description 3
- 238000009960 carding Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims description 3
- 150000002191 fatty alcohols Chemical class 0.000 claims description 3
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 3
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims description 3
- 235000019976 tricalcium silicate Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 17
- 230000002209 hydrophobic effect Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000008093 supporting effect Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 33
- 230000032683 aging Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000006750 UV protection Effects 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007938 effervescent tablet Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000029226 lipidation Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007589 penetration resistance test Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a repairing material for a reinforced concrete structure and a preparation and use method thereof, wherein the repairing material comprises the following raw materials in parts by weight: 90-110 parts of cementing material, 15-25 parts of rock wool, 0.01-0.1 part of defoamer and 18-24 parts of water. The cementing material has compact carbonization structure, high weather resistance, corrosion resistance and high compressive strength; the rock wool particles are added to play a role in supporting aggregate, so that carbonization is accelerated, and the carbonization degree is improved; under the premise that the filiform rock wool has hydrophobic property, the toughening effect is exerted according to the property of the flexible material, the compressive strength is improved, the rock wool has a heat preservation effect, the problems that the waste rock wool is difficult to treat and is accumulated in a large amount are solved better, and the industrial waste is reasonably utilized in a value-added way; in addition, industrial waste gas is used for carbonization in the carbonization process, the industrial waste gas is utilized in a value-added mode, and the problems of environmental pollution and the like caused by the industrial waste gas are effectively solved.
Description
Technical Field
The invention relates to the technical field of building repair, in particular to a reinforced concrete structure repair material and a preparation and use method thereof.
Background
The reinforced concrete structure has extremely wide application range in civil engineering, and various engineering structures can be built by adopting reinforced concrete, mainly because the reinforced concrete structure has the advantages of good integrity, good moldability, good durability, good fire resistance and the like, but also has the defects of heavy weight, low tensile strength, easiness in cracking, labor and template consumption, long period, difficult repair and the like. Therefore, defects can appear when the building time is long, such as untimely repair or improper repair of concrete cracking, the protection capability of the steel bars is reduced, the damage is accelerated, and the service life of the building is greatly reduced; natural erosion and weathering effects are also achieved, so that unfilled corners, surface damage and the like of the building are caused; or the indentation, damage and collapse (small scale) of the concrete pavement; if the defects are repaired well by the later maintenance, the service life of the building or the concrete pavement can be greatly prolonged.
According to the problems, concrete including Portland cement, sulfate cement and the like or other mortar materials is often adopted for repairing, but the repairing period is long, the connection degree of repairing materials and reinforced concrete/concrete is poor, the material cost is high, the secondary aging and corrosion are carried out, and in addition, for example, the repairing of cracks of a concrete pavement and the like is carried out, and the construction is carried out after V-shaped grooves, connecting grooves and the like are required to be firstly established, so that the construction process is complicated.
Therefore, it is necessary to provide a repair material which has a good degree of connection with reinforced concrete and a high strength.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to provide the reinforced concrete structure repairing material, which has high weather resistance, corrosion resistance and high compressive strength, and has good combination degree with a building.
The invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 90-110 parts of cementing material, 15-25 parts of rock wool, 0.01-0.1 part of defoamer and 18-24 parts of water.
Preferably, the rock wool is rock wool particles and filiform rock wool.
Preferably, the rock wool particles are obtained by granulating waste rock wool or waste building materials; the particle size of the rock wool particles is 0.5 mm-80 mm.
Preferably, the filiform rock wool is obtained by crushing, opening and carding waste rock wool;
the method also comprises the step of spraying a water repellent on the filiform rock wool; the concentration of the hydrophobe is 35% -45% of methyl silicate solution.
Preferably, the cementing material comprises calcium silicate or calcium-based and magnesium-based industrial solid waste; the calcium silicate comprises one or more of gamma-type dicalcium silicate, beta-type dicalcium silicate, monocalcium silicate, dicalcium silicate, tricalcium silicate, calcium oxide or calcium hydroxide; the industrial solid waste containing calcium and magnesium comprises one or more of steel slag, magnesium slag, carbide slag, phosphogypsum and waste stone powder;
the defoamer is selected from any one of high-carbon alcohol defoamer or polyether defoamer; the high-carbon alcohol defoamer comprises one or more of silicone defoamer, polyester defoamer, n-butyl alcohol defoamer and fatty alcohol defoamer; the polyether defoamer comprises one or more of GP type glycerol polyether, GPE type polyoxyethylene polyoxypropylene glycerol ether or silicone polyether compound defoamer.
Preferably, the repairing material further comprises 1-3 parts by weight of ceramic slag and 1-3 parts by weight of shell slag.
The invention provides a preparation method of a repairing material of a reinforced concrete structure, which comprises the following steps:
a) Mixing the cementing material and rock wool particles to obtain a mixed dry material;
b) And uniformly mixing and stirring the filiform rock wool, water and the mixed dry material, and adding a defoaming agent to prepare the composite material.
The invention provides a use method of a repairing material for a reinforced concrete structure, which comprises the following steps:
pouring and supplementing the crack or damage part of the reinforced concrete structure by taking the repairing material of the reinforced concrete structure according to any one of the technical schemes; and then carbonizing and curing.
Preferably, the carbonization maintenance conditions are as follows: carbonization gas: industrial waste gas with carbon dioxide content not less than 1%; the carbonization temperature is 0-45 ℃, the carbonization pressure is 0-1 MPa, and the carbonization time is 1-72 h.
The invention provides an application of the repairing material of the reinforced concrete structure or the repairing material prepared by the preparation method in the technical scheme in the cracking of reinforced concrete structure buildings, the unfilled corner of concrete, the surface damage of concrete, the indentation of concrete, the collapse of concrete or the cracking of concrete.
Compared with the prior art, the invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 90-110 parts of cementing material, 15-25 parts of rock wool, 0.01-0.1 part of defoamer and 18-24 parts of water. The cementing material has compact carbonization structure, high weather resistance, corrosion resistance and high compressive strength; the rock wool particles are added to play a role in supporting aggregate, so that carbonization is accelerated, and the carbonization degree is improved; under the premise that the filiform rock wool has hydrophobic property, the toughening effect is exerted according to the property of the flexible material, the compressive strength is improved, the rock wool has a heat preservation effect, the problems that the waste rock wool is difficult to treat and is accumulated in a large amount are solved better, and the industrial waste is reasonably utilized in a value-added way; in addition, industrial waste gas is used for carbonization in the carbonization process, the industrial waste gas is utilized in a value-added mode, and the problems of environmental pollution and the like caused by the industrial waste gas are effectively solved.
Detailed Description
The invention provides a reinforced concrete structure repairing material and a preparation method and a use method thereof, and a person skilled in the art can refer to the content of the material and properly improve the technological parameters. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and they are intended to be within the scope of the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the invention can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the invention.
The invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 90-110 parts of cementing material, 15-25 parts of rock wool, 0.01-0.1 part of defoamer and 18-24 parts of water.
The repairing material for the reinforced concrete structure provided by the invention comprises 90-110 parts by weight of cementing materials; preferably 95 to 105 parts by weight; more preferably, the amount may be 90 parts by weight, 95 parts by weight, 100 parts by weight or 105 parts by weight or a point value between any two of the above.
The cementing materials of the present invention include, but are not limited to, calcium silicate or calcium-based, magnesium-based industrial solid waste; the calcium silicate comprises one or more of gamma-type dicalcium silicate, beta-type dicalcium silicate, monocalcium silicate, dicalcium silicate, tricalcium silicate, calcium oxide or calcium hydroxide; the industrial solid waste containing calcium and magnesium comprises one or more of steel slag, magnesium slag, carbide slag, phosphogypsum and waste stone powder;
the repairing material of the reinforced concrete structure provided by the invention comprises 15-25 parts by weight of rock wool; more preferably 15 to 23 parts by weight.
According to the invention, the rock wool is rock wool particles and filiform rock wool.
Specifically, the rock wool particles are obtained by granulating waste rock wool or waste building materials; the invention is not limited to waste rock wool or waste building materials, and is well known to those skilled in the art.
The rock wool particles can adopt multi-stage particle size distribution, and the particle size is 0.5-80 mm.
The filiform rock wool is obtained by crushing, opening and carding waste rock wool;
the invention also comprises the step of spraying a water repellent agent on the filiform rock wool; the concentration of the hydrophobe is 35% -45% of methyl silicate solution.
After the treatment of spraying the water repellent, drying (not limited to a drying mode) is carried out to form a water repellent protective film; under the premise of having hydrophobic characteristics, the filamentous rock wool exerts the toughening effect according to the characteristics of the flexible material, improves the toughness effect of the repairing material and improves the flexural strength.
The repairing material for the reinforced concrete structure provided by the invention comprises 0.01-0.1 part by weight of defoamer; more preferably 0.02 to 0.09 parts by weight; the defoamer is prepared from high-carbon alcohol substances, polyether and lipidation substances, and is suitable for alkaline environments.
Specifically, the foam stabilizer can be any one of a high-carbon alcohol foam stabilizer or a polyether foam stabilizer; the high-carbon alcohol defoamer comprises one or more of silicone defoamer, polyester defoamer, n-butyl alcohol defoamer and fatty alcohol defoamer; the polyether defoamer comprises one or more of GP type glycerol polyether, GPE type polyoxyethylene polyoxypropylene glycerol ether or silicone polyether compound defoamer.
The repairing material for the reinforced concrete structure provided by the invention comprises 18-24 parts by weight of water.
The repairing material for the reinforced concrete structure provided by the invention preferably further comprises 1-3 parts by weight of ceramic slag and 1-3 parts by weight of shell slag. The ceramic slag is prepared by crushing waste ceramic materials and waste products, and the shell slag is prepared by crushing shells.
The components are mutually supported functionally and have the technical characteristics of interaction, and the synergistic effect of the components ensures that the repairing material has high weather resistance, corrosion resistance and high compressive strength, and the repairing material and a building have good combination degree.
The invention provides a preparation method of a repairing material of a reinforced concrete structure, which comprises the following steps:
a) Mixing the cementing material and rock wool particles to obtain a mixed dry material;
b) And uniformly mixing and stirring the filiform rock wool, water and the mixed dry material, and adding a defoaming agent to prepare the composite material.
The present invention has been described in detail with reference to the above components and proportions, and will not be described in detail herein.
The invention firstly takes cementing materials and rock wool particles according to weight fraction to mix evenly, and then obtains mixed dry materials.
The mixing mode of the present invention is not limited, and may be known to those skilled in the art.
And (3) respectively adding the filiform rock wool and water into the mixed dry material prepared in the step one, uniformly stirring, and adding a defoaming agent to prepare the repairing material.
The invention provides a use method of a repairing material for a reinforced concrete structure, which comprises the following steps:
pouring and supplementing the crack or damage part of the reinforced concrete structure by taking the repairing material of the reinforced concrete structure according to any one of the technical schemes; and then carbonizing and curing.
According to the size of the cracking or breakage of the reinforced concrete structure, the particle size of the multi-level rock wool particles is determined, and a proper amount of the repairing material provided by the invention is taken for pouring or supplementing, and carbonization maintenance is carried out after the pouring or supplementing is completed.
Further, the carbonization maintenance conditions are as follows: a carbonization gas, an industrial waste gas having a carbon dioxide content of not less than 1% (including 1%); the carbonization temperature is 0-45 ℃, the carbonization pressure is 0-1 MPa, and the carbonization time is 1-72 h; the carbonization time is adjusted according to the size of cracking or breakage of the reinforced concrete structure.
The invention provides an application of the repairing material of the reinforced concrete structure or the repairing material prepared by the preparation method in the technical scheme in the cracking of reinforced concrete structure buildings, the unfilled corner of concrete, the surface damage of concrete, the indentation of concrete, the collapse of concrete or the cracking of concrete.
The invention has the positive effects that:
(1) The repairing material for the reinforced concrete structure provided by the invention has compact structure, high weather resistance, corrosion resistance and high compressive strength after the cementing material is carbonized; rock wool particles with multi-level particle size can meet the requirements of aggregate support and carbonization pores with different depths and different widths, effectively replace sand and stone, are more beneficial to constructing effective pores, promote the entry of carbon dioxide-containing carbonization gas, improve the carbonization degree and improve the mechanical property; meanwhile, the rock wool particles are granulated and internally wrapped with waste concrete particles, so that the rock wool particles have certain compressive strength; the filiform rock wool is obtained from waste rock wool, and the rock wool has a certain hydrophobic effect in the preparation process; in addition, the hydrophobic effect of the fiber rock wool can be improved by spraying the hydrophobic agent, the toughening effect of the fiber rock wool can be exerted according to the characteristics of the flexible material on the premise of having the hydrophobic characteristic, the toughness effect of the repairing material is improved, the compressive strength is improved, and the rock wool can also exert a certain heat preservation effect; in addition, the rock wool can be selected to solve the problems of difficult treatment and large accumulation of waste rock wool, so that industrial waste is reasonably utilized in a value-added manner; in addition, the carbonization process can be carried out by using industrial waste gas with carbon dioxide content not less than 1%, so that the industrial waste gas is utilized in a value-added way, and the problems of environmental pollution and the like caused by the industrial waste gas are effectively solved.
(2) The repairing material provided by the invention is used for repairing reinforced concrete structures or other concretes, the construction is simple and quick, the construction can be carried out at any time after the positions needing to be repaired are cleaned, the operation is simple, and the construction period is saved; the combination degree of the repairing material and the building is good, and secondary repairing is reduced; in addition, the ageing resistance, the freezing resistance and the corrosion resistance are also obviously improved.
(3) The repairing material for the reinforced concrete structure provided by the invention can be added with ceramic slag and shell slag, so that the waterproof effect can be effectively improved, and the problems of treatment of ceramic waste materials and waste products can be effectively solved.
In order to further illustrate the present invention, the following examples are provided to describe in detail an iron-supplementing effervescent tablet and a preparation method thereof.
The raw materials or auxiliary materials used in the invention can be obtained from the market. The cementing materials of the following examples and comparative examples are exemplified by steel slag, and other cementing materials of the present application are not disclosed herein in order, but do not represent that they do not have the effects exemplified by steel slag.
Example 1:
the embodiment of the invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 90 parts of steel slag, 10 parts of rock wool particles, 5 parts of filiform rock wool, 0.01 part of defoamer and 18 parts of water.
Respectively taking cementing materials and rock wool particles according to weight fraction, and uniformly mixing to obtain mixed dry materials; and respectively adding the filiform rock wool and water into the mixed dry material, uniformly stirring the defoamer to obtain slurry, preparing the repairing material, pouring or supplementing a proper amount of the repairing material provided by the invention, and carbonizing and curing after pouring or supplementing is finished.
The carbonization maintenance conditions are as follows: industrial waste gas with carbon dioxide content of 5% of carbonized gas; the carbonization temperature is 25 ℃, the carbonization pressure is 0.1MPa, and the carbonization time is 2 hours.
Example 2:
the embodiment of the invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 100 parts of steel slag, 10 parts of rock wool particles, 10 parts of filiform rock wool, 0.06 part of defoamer and 21 parts of water.
Respectively taking cementing materials and rock wool particles according to weight fraction, and uniformly mixing to obtain mixed dry materials; and respectively adding the filiform rock wool and water into the mixed dry material, uniformly stirring the defoamer to obtain slurry, preparing the repairing material, pouring or supplementing a proper amount of the repairing material provided by the invention, and carbonizing and curing after pouring or supplementing is finished.
The carbonization maintenance conditions are as follows: industrial waste gas with carbon dioxide content of 5% of carbonized gas; the carbonization temperature is 25 ℃, the carbonization pressure is 0.1MPa, and the carbonization time is 2 hours.
Example 3:
the embodiment of the invention provides a repairing material for a reinforced concrete structure, which comprises the following raw materials in parts by weight: 110 parts of steel slag, 15 parts of rock wool particles, 10 parts of filiform rock wool, 0.1 part of defoamer and 24 parts of water.
Respectively taking cementing materials and rock wool particles according to weight fraction, and uniformly mixing to obtain mixed dry materials; and respectively adding the filiform rock wool and water into the mixed dry material, uniformly stirring the defoamer to obtain slurry, preparing the repairing material, pouring or supplementing a proper amount of the repairing material provided by the invention, and carbonizing and curing after pouring or supplementing is finished.
The carbonization maintenance conditions are as follows: industrial waste gas with carbon dioxide content of 5% of carbonized gas; the carbonization temperature is 25 ℃, the carbonization pressure is 0.1MPa, and the carbonization time is 2 hours.
The carbonization time is adjusted according to the size of cracking or breakage of the reinforced concrete structure.
Examples 1 to 3 were carried out under the same conditions, and the reinforced concrete blocks of 100mmX80mm were repaired under the same conditions, and the repaired parts of the reinforced concrete blocks were subjected to compressive strength, freezing resistance, ultraviolet aging test, bonding strength and salt spray test, respectively, and the results are shown in table 1 below:
TABLE 1 test results for examples 1-3
Example 4:
embodiment 4 is different from embodiment 3 in that the concentration of carbonization gas in carbonization curing conditions is different, and the repairing material for the reinforced concrete structure provided by the embodiment of the invention comprises the following raw materials in parts by weight: 110 parts of steel slag, 15 parts of rock wool particles, 10 parts of filiform rock wool, 0.1 part of defoamer and 24 parts of water.
Respectively taking cementing materials and rock wool particles according to weight fraction, and uniformly mixing to obtain mixed dry materials; and respectively adding the filiform rock wool and water into the mixed dry material, uniformly stirring the defoamer to obtain slurry, preparing the repairing material, pouring or supplementing a proper amount of the repairing material provided by the invention, and carbonizing and curing after pouring or supplementing is finished.
The carbonization maintenance conditions are as follows: industrial waste gas with carbon dioxide content of 10% of carbonized gas; the carbonization temperature is 25 ℃, the carbonization pressure is 0.1MPa, and the carbonization time is 2 hours.
The carbonization time is adjusted according to the size of cracking or breakage of the reinforced concrete structure.
Example 5:
embodiment 5 is different from embodiment 3 in that the concentration of carbonization gas in carbonization curing conditions is different, and the repairing material for the reinforced concrete structure provided by the embodiment of the invention comprises the following raw materials in parts by weight: 110 parts of steel slag, 15 parts of rock wool particles, 10 parts of filiform rock wool, 0.1 part of defoamer and 24 parts of water.
Respectively taking cementing materials and rock wool particles according to weight fraction, and uniformly mixing to obtain mixed dry materials; and respectively adding the filiform rock wool and water into the mixed dry material, uniformly stirring the defoamer to obtain slurry, preparing the repairing material, pouring or supplementing a proper amount of the repairing material provided by the invention, and carbonizing and curing after pouring or supplementing is finished.
The carbonization maintenance conditions are as follows: industrial waste gas with carbon dioxide content of 15% of carbonized gas; the carbonization temperature is 25 ℃, the carbonization pressure is 0.1MPa, and the carbonization time is 2 hours.
The carbonization time is adjusted according to the size of cracking or breakage of the reinforced concrete structure.
Examples 4 and 5 differ from example 3 in that the concentration of the carbonization gas is different in the condition of carbonization maintenance; repairing the damaged grooves which are similar to the reinforced concrete blocks with 100mmX and 80mm under the same conditions, and respectively carrying out compressive strength, freezing resistance, ultraviolet aging test, bonding degree and salt spray test on the repaired parts of the reinforced concrete blocks after repairing, wherein the results are shown in the following table 2:
TABLE 2
Examples 3 to 5 show that the compressive strength gradually increases with the increase of the carbon dioxide concentration in carbonization maintenance, which means that the better the carbonization effect of the cementing material in the atmosphere with higher carbon dioxide concentration is, and therefore the greater the compressive strength is; the gel material has better carbonization effect in the atmosphere with higher carbon dioxide concentration, so the compression strength is higher.
Example 6:
the difference from example 3 is that: the carbonization times were different, the carbonization time of example 6 was 6h.
Example 7:
the difference from example 3 is that: the carbonization times were different, the carbonization time of example 6 was 10h.
Examples 6 and 7 and example 3 were each repaired under the same conditions with respect to a damaged groove having a similar shape to a reinforced concrete block having a 100mmX of 80mm, and after the repair, the reinforced concrete block was subjected to a compressive strength test, an antifreeze property, an ultraviolet aging test, a bonding degree test, and a salt spray test, respectively, and the results are shown in table 3 below:
TABLE 3 Table 3
Examples 3, 6 and 7 show that the compressive strength gradually increases with the increase of carbonization time in the carbonization and oxidation process, which shows that the compressive strength of the cementing material is larger with the increase of carbonization time in a certain range.
In the same way, regarding the test of carbonization pressure in carbonization conditions, the compressive strength is gradually increased along with the increase of carbonization pressure in carbonization and oxidization processes, and the compressive strength of the cementing material is larger as the carbonization pressure is increased at any time within a certain range.
In combination with examples 3, 4, 5, 6, 7 and carbonization pressure, further speaking, the higher the carbonization time and the carbon dioxide content in the curing gas and the carbonization pressure, the better the carbonization degree, the denser the structure and the higher the compressive strength; however, after carbonization reaches a certain degree (saturation, approximate saturation, and qualified detection), the carbonization time is too long, which is easy to cause waste of maintenance gas and the like, and increases cost and the like; carbonization pressure and carbonization time are the same.
Comparative example 1:
comparative example 1 differs from examples 1 to 3 in that the repair and maintenance methods conventional in the prior art (not carbonization maintenance as referred to in this application) are employed.
Examples 1 to 3 and comparative example 1 were each repaired under the same conditions with respect to a damaged groove having a similar shape to a reinforced concrete block having a 100mmX of 80mm, and after the repair, the reinforced concrete block was subjected to a compressive strength test, an antifreeze property, an ultraviolet aging test, a bonding degree test, and a salt spray test, respectively, and the results are shown in table 4 below:
TABLE 4 test results for examples 1-3 and comparative example 1
According to the test results, the compressive strength, the freezing resistance, the ultraviolet resistance, the combination degree of the repairing material and the repairing part and the salt spray test result of the examples 1-3 are all superior to those of the comparative example 1, and the result is that the structure of the repairing material is compact and stable after the carbonization of the cementing material, so that the repairing material provided by the application has the advantages of good compressive strength, freezing resistance, strong ultraviolet resistance, high combination degree and good corrosion resistance.
Comparative example 2:
examples 1 to 3, comparative example 1 and comparative example 2, the similar damaged grooves were repaired for 100mmX80mm reinforced concrete blocks under the same conditions, respectively;
comparative example 2 differs from examples 1 to 3 in that rock wool particles and filamentous rock wool are not added in comparative example 2;
compressive strength tests were conducted for 1h, 24h and 48h for examples 1 to 3, comparative example 1 and comparative example 2, respectively, and the specific test results are shown in table 5:
table 5: compression strength test results of examples 1 to 3, comparative example 1 and comparative example 2
From the test results, the compressive strength of comparative example 2 is lower than that of examples 1 to 3, as the compressive strength of comparative example 2 is not good because rock wool particles playing a role in supporting a framework and silk-like rock wool playing a role in toughening are not added;
comparative example 2 is compared with comparative example 1, and the compressive strength of comparative example 2 is higher than that of comparative example 1, because the cement in the repairing material of the reinforced concrete structure provided in comparative example 2 is carbonized to effectively improve the compressive strength; further, the rock wool particles and the filiform rock wool are added, so that the waste rock wool can be effectively utilized, the enhancement effect can be achieved, and the high-value waste utilization target is realized.
Comparative example 3:
unlike example 2, the rock wool of comparative example 3 was added with only 20 parts of rock wool particles;
comparative example 4:
unlike example 2, the rock wool of comparative example 4 was added with only 20 parts of filamentous rock wool;
for example 2, comparative example 3 and comparative example 4, respectively, for 100mmX80mm reinforced concrete blocks, similar broken grooves were repaired under the same conditions, compressive strength tests were performed for 1h, 24h and 48h, and specific test results are shown in table 6:
TABLE 6
From the test results, the compressive strength of each of comparative examples 3 and 4 is lower than that of example 2, and the compressive strength of comparative example 3 is slightly higher than that of comparative example 4, so that the filamentous rock wool with the rock wool particles having the skeleton supporting effect and the toughening effect can promote the improvement of the compressive strength mutually.
Example 8:
example 8 differs from examples 1 to 3 in that 1 part of ceramic slag and 1 part of shell slag are added in example 8;
example 9
Example 9 differs from examples 1 to 3 in that 2 parts of ceramic slag and 2 parts of shell slag are added in example 9;
example 10
Example 10 is different from examples 1 to 3 in that 3 parts of ceramic slag and 3 parts of shell slag are added in example 10;
examples 1 to 3 and examples 8 to 10, repair damaged grooves similar to reinforced concrete blocks of 200mmX200mmX150mm under the same conditions;
the water permeation resistance tests are respectively carried out on the examples 1-3 and the examples 8-10, the water pressure applied by the impermeability instrument ranges from 0.1MPa to 2.0MPa, and the specific test results are shown in the table 6:
table 7: results of Water penetration resistance test of examples 1 to 3 and examples 8 to 10
According to the test results, the water permeation resistance of examples 8-10 is similar to or better than that of examples 1-3, compared with examples 1-3, because the hydrophobic ceramic slag and the shell slag are added in examples 8-10, and the waterproof performance is improved after the hydrophobic ceramic slag and the shell slag are combined with the cementing material.
Compared with comparative example 1, examples 8-10 have higher wear-resistant and waterproof performances than comparative example 1, because the cementing materials, ceramic slag and shell slag in the repairing materials of the reinforced concrete structures provided in examples 8-10 have synergistic effects; further, the addition of the ceramic slag and the shell slag is feasible, the waste ceramic slag and the shell slag are effectively utilized, the waterproof effect can be achieved, and the waterproof performance of the ceramic slag and the shell slag is gradually improved along with the increase of the addition amount of the ceramic slag and the shell slag.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A repairing material for a reinforced concrete structure is characterized in that: the material comprises the following raw materials in parts by weight: 90-110 parts of cementing material, 15-25 parts of rock wool, 0.01-0.1 part of defoamer and 18-24 parts of water.
2. The restoration material according to claim 1, wherein the rock wool is rock wool particles and filiform rock wool.
3. The repairing material according to claim 2, wherein the rock wool particles are obtained by granulating waste rock wool or waste building materials; the particle size of the rock wool particles is 0.5 mm-80 mm.
4. The repairing material according to claim 2, wherein the filiform rock wool is obtained by crushing, opening and carding waste rock wool;
the method also comprises the step of spraying a water repellent on the filiform rock wool; the concentration of the hydrophobe is 35% -45% of methyl silicate solution.
5. The restoration material according to claim 1, wherein the gel material comprises calcium silicate or calcium-based magnesium-based industrial solid waste; the calcium silicate comprises one or more of gamma-type dicalcium silicate, beta-type dicalcium silicate, monocalcium silicate, dicalcium silicate, tricalcium silicate, calcium oxide or calcium hydroxide; the industrial solid waste containing calcium and magnesium comprises one or more of steel slag, magnesium slag, carbide slag, phosphogypsum and waste stone powder;
the defoamer is selected from any one of high-carbon alcohol defoamer or polyether defoamer; the high-carbon alcohol defoamer comprises one or more of silicone defoamer, polyester defoamer, n-butyl alcohol defoamer and fatty alcohol defoamer; the polyether defoamer comprises one or more of GP type glycerol polyether, GPE type polyoxyethylene polyoxypropylene glycerol ether or silicone polyether compound defoamer.
6. The repairing material according to claim 1, further comprising 1-3 parts by weight of ceramic slag and 1-3 parts by weight of shell slag.
7. A method for preparing a repair material for reinforced concrete structures according to any one of claims 1 to 6, comprising the steps of:
a) Mixing the cementing material and rock wool particles to obtain a mixed dry material;
b) And uniformly mixing and stirring the filiform rock wool, water and the mixed dry material, and adding a defoaming agent to prepare the composite material.
8. The application method of the repairing material for the reinforced concrete structure is characterized by comprising the following steps of:
pouring and supplementing the crack or damage part of the reinforced concrete structure by taking the repairing material of the reinforced concrete structure according to any one of claims 1 to 6; and then carbonizing and curing.
9. The method of claim 8, wherein the carbonization maintenance conditions are: carbonization gas: industrial waste gas with carbon dioxide content not less than 1%; the carbonization temperature is 0-45 ℃, the carbonization pressure is 0-1 MPa, and the carbonization time is 1-72 h.
10. Use of a repair material of a reinforced concrete structure according to any one of claims 1 to 6 or a repair material prepared by the preparation method according to claim 7 in cracking of a reinforced concrete structure building, unfilled corners of concrete, surface breakage of concrete, indentation of concrete, collapse of concrete or cracking of concrete.
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| CN111978043A (en) * | 2020-08-25 | 2020-11-24 | 广州至城建筑材料科技有限公司 | Self-waterproof concrete and preparation method thereof |
| CN113896475A (en) * | 2021-10-13 | 2022-01-07 | 西安建筑科技大学 | Method for preparing high-strength baking-free solid bricks by using rock wool furnace bottom slag |
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| CN108218270A (en) * | 2018-01-24 | 2018-06-29 | 山东建筑大学 | A kind of method that water-proof antibiotic cement is prepared using trade waste |
| CN108249852A (en) * | 2018-01-24 | 2018-07-06 | 宋金博 | A kind of very-high performance underground waterproof concrete material and preparation method thereof |
| CN111978043A (en) * | 2020-08-25 | 2020-11-24 | 广州至城建筑材料科技有限公司 | Self-waterproof concrete and preparation method thereof |
| CN113896475A (en) * | 2021-10-13 | 2022-01-07 | 西安建筑科技大学 | Method for preparing high-strength baking-free solid bricks by using rock wool furnace bottom slag |
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