CN116122614A - Construction process for repairing building outer wall - Google Patents
Construction process for repairing building outer wall Download PDFInfo
- Publication number
- CN116122614A CN116122614A CN202211700727.1A CN202211700727A CN116122614A CN 116122614 A CN116122614 A CN 116122614A CN 202211700727 A CN202211700727 A CN 202211700727A CN 116122614 A CN116122614 A CN 116122614A
- Authority
- CN
- China
- Prior art keywords
- agent
- coating
- wall
- waterproof
- sodium silicate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical class [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000011083 cement mortar Substances 0.000 claims abstract description 42
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 24
- 238000002425 crystallisation Methods 0.000 claims abstract description 23
- 230000008025 crystallization Effects 0.000 claims abstract description 23
- 239000003999 initiator Substances 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920002472 Starch Polymers 0.000 claims abstract description 8
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 8
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 239000001509 sodium citrate Substances 0.000 claims abstract description 8
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims abstract description 8
- 239000008107 starch Substances 0.000 claims abstract description 8
- 235000019698 starch Nutrition 0.000 claims abstract description 8
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims abstract description 7
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims description 55
- 238000000576 coating method Methods 0.000 claims description 55
- 238000003756 stirring Methods 0.000 claims description 54
- 239000000843 powder Substances 0.000 claims description 33
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 30
- 239000010410 layer Substances 0.000 claims description 30
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 30
- 239000002270 dispersing agent Substances 0.000 claims description 22
- 239000004568 cement Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 21
- 239000004115 Sodium Silicate Substances 0.000 claims description 18
- 239000000839 emulsion Substances 0.000 claims description 18
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 18
- 239000004567 concrete Substances 0.000 claims description 17
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 13
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002585 base Substances 0.000 claims description 12
- 230000001680 brushing effect Effects 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 12
- 239000003995 emulsifying agent Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000004014 plasticizer Substances 0.000 claims description 11
- 238000004078 waterproofing Methods 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 238000007667 floating Methods 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 239000011344 liquid material Substances 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000004224 protection Effects 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 4
- 230000003712 anti-aging effect Effects 0.000 claims description 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 4
- 229920001038 ethylene copolymer Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 2
- 230000005012 migration Effects 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000009435 building construction Methods 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 8
- 230000006750 UV protection Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000008717 functional decline Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0296—Repairing or restoring facades
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/06—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
- C09D1/08—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/002—Arrangements for cleaning building facades
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Ceramic Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a construction process for repairing an outer wall of a building, which relates to the technical field of building construction, wherein a permeable crystallization type waterproof interface agent is used in the process and comprises the following steps: 1-3 parts of graphene oxide, 2-5 parts of starch, 2-3 parts of sodium citrate, 3-5 parts of modified sodium silicate I, 1-2 parts of water reducer and 0.1-0.5 part of sodium bisulphite initiator, wherein hydrophobic long-chain organic ammonium salt is introduced into the modified sodium silicate, so that the penetration of water can be prevented, and ion migration can be slowed down; the cohesiveness of cement mortar is improved by providing a cement mortar reinforcing agent.
Description
Technical Field
The invention relates to the technical field of a construction process x for repairing an outer wall of a building, in particular to a construction process for repairing the outer wall of the building.
Background
The surface of the building is generally called an outer wall, the outer wall bears the functions of loading, shielding wind and rain, heat preservation, heat insulation, sound insulation, fire prevention safety and the like, but the outer wall of the building can crack, hollowing, fall off, sand and water leakage due to long-term exposure to various physical and chemical factors such as sunlight, moisture, temperature, various harmful gases, impurities and the like in the atmosphere, the outer wall facing of the building is easy to accumulate thicker dirt or cause damage or function decline of the facing, the outer wall facing becomes dull and old, namely the appearance is seriously influenced, the functions of water resistance, heat insulation, sound insulation and the like are also lost, and the service life of the building can be seriously damaged when the outer wall of the building is in the state for a long time.
The reason that building outer wall cracks, hollows, drops is that: the building material contains certain soluble free salt and alkali. The water originally contained in the wall material or the water entering from outside under construction and use conditions can dissolve the uniformly distributed salt and alkali and move to the outside along with the dispersion of the water. Due to the outward movement and evaporation of the water. Salt generally accumulates and crystallizes near the surface layer of the wall, and the expansion force of salting out crystallization acts on the facing layer, so that the facing layer and the base layer are separated and shelled. Therefore, the waterproof paint and the interfacial agent are adopted to reduce repeated penetration of water into the outer wall of the building, and further the alkalization of the wall surface is avoided.
The traditional building exterior wall repairing method comprises the following steps: and (5) removing until the cement base layer is exposed, coating epoxy resin and cement mortar to seal the filling opening. However, the existing waterproof materials on the market mainly comprise asphalt base coats and asphalt coiled materials, the materials are poor in weather resistance and ageing resistance, hardening, shelling and hollowing are carried out for 3-5 years, and in the aspect of construction, the tools are tedious, the construction period is long, and the base coats can be constructed only by moving open fire and heating rods to heat the base coats to 200 ℃. In terms of manufacturing cost, material cost, construction cost, later maintenance cost and the like.
Therefore, the construction process for repairing the outer wall of the building, which is environment-friendly, economical, attractive and good in ageing resistance, has practical significance.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a construction process for repairing the outer wall of a building, which solves the problems of insufficient environment protection, poor ageing resistance and poor waterproof performance of raw materials in the traditional construction process for repairing the outer wall of the building.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the construction process for repairing the outer wall of the building comprises the following steps of cleaning the wall surface of the outer wall, waterproofing, leveling, insulating and decorating:
step S01, cleaning and repairing: the original outer wall is shoveled out until the cement base layer is exposed, floating dust is cleaned, the gap V groove is opened, and the gap V groove is treated by using a permeable crystallization type waterproof interface agent, so that the functions of plugging, water stopping and reinforcement are achieved;
step S02, leveling: leveling by using cement mortar containing a reinforcing agent, wherein 0.5-3% of cement mortar reinforcing agent is doped in the cement mortar, leveling is performed by using cement mortar with the ratio of 1:2.5, and the leveling thickness is 1-2cm, so that a building outer wall leveling layer is obtained;
step S03, elastic waterproof: the waterproof priming coat and the waterproof top coat are carried out by using a multifunctional elastic waterproof coating, wherein the priming coat is formed by brushing the waterproof coating on a cement mortar leveling layer by using a roller, drying for 1 hour after the coating is uniform, brushing the waterproof coating on the priming coat, drying for 4 hours after the coating is uniform, and finally brushing the second top coat;
step S04, reinforcing a gap: reinforcing the crack, parapet, internal and external corners and root of pipe with space cloth before decorative paint or protecting layer
Step S05, heat preservation: installing an insulating layer, wherein the thickness of the insulating layer is 25-35mm, and the insulating layer comprises the following materials: binding mortar, a heat-insulating board, alkali-resistant glass fiber gridding cloth, anchor bolts, plastering mortar and a bracket, brushing a waterproof agent on the plastering mortar of the heat-insulating layer by using a roller for waterproof treatment;
step S06, decorative paint or protective layer: and (3) carrying out decorative coating on the outer wall surface of the building by using the heat insulation decorative coating or coating the outer wall of the building by using the protective layer, making a separation joint, and constructing a second coating on the first surface after finishing the first surface.
Preferably, the penetrating crystallization type waterproof interface agent comprises: 1-3 parts of graphene oxide, 2-5 parts of starch, 2-3 parts of sodium citrate, 3-5 parts of modified sodium silicate I, 1-2 parts of water reducer and 0.1-0.5 part of sodium bisulfite initiator, and uniformly mixing the raw material powder to obtain the permeable crystallization type waterproof interfacial agent.
Preferably, the preparation of the modified silicate I comprises the following steps:
step S11: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s12, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and step S13, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, after initiating for a period of time, adding a preset amount of hydrophobic long-chain organic ammonium salt modifier, and reacting for 2-4 hours under the protection of inert gas nitrogen at a constant temperature to obtain the modified sodium silicate I after polyvinyl alcohol crosslinking and organic amine modification.
Preferably, the hydrophobic long chain organic ammonium salt comprises a quaternary ammonium salt of C16-18.
Preferably, the cement mortar reinforcing agent is modified sodium silicate II, and the cement mortar containing the reinforcing agent comprises the following formula: 200-240 parts of cement, 9-10 parts of water reducer, 100-120 parts of water and 10-20 parts of modified sodium silicate II, and uniformly stirring mechanically, and spraying the mixture on the outer wall of a building with the spraying dosage of 0.1-0.12L/m < 2 >.
Preferably, the preparation of the modified sodium silicate II comprises the following steps:
step S21: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s22, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and S23, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, initiating for a period of time, and then adding sulfamic acid, sodium dodecyl sulfate and modifier, and reacting for 2-4 hours at a constant temperature to obtain modified sodium silicate II after polyvinyl alcohol crosslinking and organic amine modification.
Preferably, the cement mortar reinforcing agent is added into concrete or cement mortar according to the proportion, and is fully stirred after weighing, and is kept stand for 5-10 minutes after stirring, and is stirred again.
Preferably, the multifunctional elastic waterproof paint comprises: the emulsion comprises polymer emulsion, cement powder, quartz powder, calcium carbonate powder and an auxiliary agent, wherein the formula proportion of the auxiliary agent comprises the following components in percentage by mass: 5.0wt% of film forming auxiliary agent, 0.2wt% of dispersing agent A, 0.3wt% of dispersing agent B, 1.0wt% of waterproofing agent, 2.5wt% of plasticizer, 2.0wt% of anti-aging agent and 0.5wt% of defoaming agent, wherein the polymer emulsion is vinyl acetate-ethylene copolymer, the waterproofing agent is calcium stearate, the plasticizer is chlorinated paraffin, the dispersing agent A is polymethacrylic acid derivative, the dispersing agent B is sodium hexametaphosphate, and the tensile strength of the obtained multifunctional elastic waterproof coating film is 2.35-2.84MPa, and the elongation at break is 270-310%.
Preferably, the use of the multifunctional elastic waterproof coating comprises the following steps:
step S31, preparing liquid materials: weighing polymer emulsion with a poly-ash ratio, pouring the polymer emulsion into a container, stirring and dispersing, sequentially adding a dispersing agent A, a film forming auxiliary agent, a waterproof agent and a defoaming agent in a set proportion according to a formula proportion, and uniformly mixing for later use;
step S32, preparing powder: mixing cement powder, quartz powder and calcium carbonate powder according to the proportion of 2:1:1, adding a dispersing agent and a plasticizer, uniformly stirring,
step S33, mixing liquid powder: slowly adding the stirred and dispersed liquid material into the uniformly mixed powder material, stirring and dispersing for 5-7 min at a low speed of 800-1000 rpm under a sand grinding, dispersing and stirring multi-purpose machine, fully stirring until no obvious agglomerated particles exist in the system, standing for 1-3 min after uniform stirring to reduce air bubbles, and performing the next operation;
step S34, coating: the coating is carried out for three times, the subsequent coating is carried out after the previous coating is dried, and finally the thickness of the coating film reaches 1.2-2.5mm.
Preferably, the protective layer adopts cement mortar with the thickness of 20mm or 40-thickness fine stone concrete, and the fine stone concrete is doped with 2-3% of cement reinforcing agent as the protective layer.
The principle of the invention: the invention provides a construction process for repairing the outer wall of a building, which plays roles of plugging, water stopping and reinforcing by cleaning and repairing gaps in the outer wall of the building, wherein a waterproof interface agent is used in the process, and hydrophobic long-chain organic ammonium salt is introduced into modified sodium silicate, so that not only can the permeation of moisture be prevented, but also the ion migration can be slowed down, the process has the characteristics of permeation crystallization, corrosion resistance, concrete compactness increase and concrete strength improvement, graphene oxide, starch, sodium citrate and modified sodium silicate are contacted with the surface of the concrete, water is taken as a carrier to permeate in the concrete to form branch-like needle-shaped crystals growing in the interior of the concrete, and after the moisture volatilizes, the crystals are tightly combined with the concrete to block capillary channel permeation of water, so that the waterproof and plugging purposes are achieved; the cement mortar reinforcing agent improves the cohesiveness of cement mortar, can prevent the phenomena of sand, cracks and hollowness of the outer wall of a building, simultaneously blocks capillary channels and micro gaps of cement mortar and concrete, and can be easily smeared on smooth wall surfaces with good structure; the fiber waterproof coating is excellent in ultraviolet resistance, wear resistance, aging resistance and weather resistance, and can be directly applied to a wet surface.
(III) beneficial effects
The invention provides a construction process for repairing a building outer wall, which has the following beneficial effects:
(1) The construction process for repairing the outer wall of the building has the effects of plugging, stopping water and reinforcing by cleaning and repairing the gaps in the outer wall of the building, can prevent the sand, cracking and hollowing phenomena of the outer wall of the building by providing the cement mortar reinforcing agent to improve the cohesiveness of cement mortar, simultaneously plugs capillary channels and micro gaps of the cement mortar and concrete, and can easily coat the smooth wall surface with good structure; the fiber waterproof coating is excellent in ultraviolet resistance, wear resistance, aging resistance and weather resistance, and can be directly applied to a wet surface.
(2) The construction process for repairing the outer wall of the building has the advantages of freeze thawing resistance, aging resistance, good ultraviolet resistance, no toxicity, environmental protection and convenience in construction, and has the advantages of convenience in construction, short construction period, no water seepage and water leakage after finishing, and stable quality.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a technical scheme that: the construction process for repairing the outer wall of the building comprises the following steps of cleaning the wall surface of the outer wall, waterproofing, leveling, insulating and decorating:
step S01, cleaning and repairing: the original outer wall is shoveled out until the cement base layer is exposed, floating dust is cleaned, the gap V groove is opened, and the gap V groove is treated by using a permeable crystallization type waterproof interface agent, so that the functions of plugging, water stopping and reinforcement are achieved;
step S02, leveling: leveling by using cement mortar containing a reinforcing agent, wherein 0.5-3% of cement mortar reinforcing agent is doped in the cement mortar, leveling is performed by using cement mortar with the ratio of 1:2.5, and the leveling thickness is 1-2cm, so that a building outer wall leveling layer is obtained;
step S03, elastic waterproof: the method comprises the steps of using fiber waterproof paint to carry out waterproof prime coat and waterproof top coat, brushing the waterproof paint on a cement mortar leveling layer by using a roller, uniformly coating, drying for 1 hour, brushing the waterproof paint on the primer, uniformly coating, drying for 4 hours, and finally brushing the second top coat;
step S04, reinforcing a gap: reinforcing the crack, parapet, internal and external corners and root of pipe with space cloth before decorative paint or protecting layer
Step S05, heat preservation: installing an insulating layer, wherein the thickness of the insulating layer is 25-35mm, and the insulating layer comprises the following materials: binding mortar, a heat-insulating board, alkali-resistant glass fiber gridding cloth, anchor bolts, plastering mortar and a bracket, brushing a waterproof agent on the plastering mortar of the heat-insulating layer by using a roller for waterproof treatment;
step S06, decorative paint or protective layer: and (3) carrying out decorative coating on the outer wall surface of the building by using the heat insulation decorative coating or coating the outer wall of the building by using the protective layer, making a separation joint, and constructing a second coating on the first surface after finishing the first surface.
Further, the penetrating crystallization type waterproof interface agent comprises: 1-3 parts of graphene oxide, 2-5 parts of starch, 2-3 parts of sodium citrate, 3-5 parts of modified sodium silicate I, 1-2 parts of water reducer and 0.1-0.5 part of sodium bisulfite initiator, and uniformly mixing the raw material powder to obtain the permeable crystallization type waterproof interfacial agent.
Further, the preparation of the modified silicate I comprises the following steps:
step S11: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s12, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and step S13, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, after initiating for a period of time, adding a preset amount of hydrophobic long-chain organic ammonium salt modifier, and reacting for 2-4 hours under the protection of inert gas nitrogen at a constant temperature to obtain the modified sodium silicate I after polyvinyl alcohol crosslinking and organic amine modification.
Further, the hydrophobic long chain organic ammonium salt includes a quaternary ammonium salt of C16-18.
Further, the cement mortar reinforcing agent is modified sodium silicate II, and the cement mortar containing the reinforcing agent comprises the following formula: 200-240 parts of cement, 9-10 parts of water reducer, 100-120 parts of water and 10-20 parts of modified sodium silicate II, and uniformly stirring mechanically, and spraying the mixture on the outer wall of a building with the spraying dosage of 0.1-0.12L/m 2 。
Further, the preparation of the modified sodium silicate II comprises the following steps:
step S21: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s22, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and S23, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, initiating for a period of time, and then adding sulfamic acid, sodium dodecyl sulfate and modifier, and reacting for 2-4 hours at a constant temperature to obtain modified sodium silicate II after polyvinyl alcohol crosslinking and organic amine modification.
Further, the cement mortar reinforcing agent is added into concrete or cement mortar according to the proportion, and is fully stirred after being weighed, and is kept stand for 5-10 minutes after being stirred, and is stirred again.
Further, the multifunctional elastic waterproof coating comprises: the emulsion comprises polymer emulsion, cement powder, quartz powder, calcium carbonate powder and an auxiliary agent, wherein the formula proportion of the auxiliary agent comprises the following components in percentage by mass: 5.0wt% of film forming auxiliary agent, 0.2wt% of dispersing agent A, 0.3wt% of dispersing agent B, 1.0wt% of waterproofing agent, 2.5wt% of plasticizer, 2.0wt% of anti-aging agent and 0.5wt% of defoaming agent, wherein the polymer emulsion is vinyl acetate-ethylene copolymer, the waterproofing agent is calcium stearate, the plasticizer is chlorinated paraffin, the dispersing agent A is polymethacrylic acid derivative, the dispersing agent B is sodium hexametaphosphate, the tensile strength of the obtained waterproof coating film is 2.35-2.84MPa, and the elongation at break is 270-310%.
Further, the use of the multifunctional elastic waterproof coating comprises the following steps:
step S31, preparing liquid materials: weighing polymer emulsion with a poly-ash ratio, pouring the polymer emulsion into a container, stirring and dispersing, sequentially adding a dispersing agent A, a film forming auxiliary agent, a waterproof agent and a defoaming agent in a set proportion according to a formula proportion, and uniformly mixing for later use;
step S32, preparing powder: mixing cement powder, quartz powder and calcium carbonate powder according to the proportion of 2:1:1, adding a dispersing agent and a plasticizer, uniformly stirring,
step S33, mixing liquid powder: slowly adding the stirred and dispersed liquid material into the uniformly mixed powder material, stirring and dispersing for 5-7 min at a low speed of 800-1000 rpm under a sand grinding, dispersing and stirring multi-purpose machine, fully stirring until no obvious agglomerated particles exist in the system, standing for 1-3 min after uniform stirring to reduce air bubbles, and performing the next operation;
step S34, coating: the coating is carried out for three times, the subsequent coating is carried out after the previous coating is dried, and finally the thickness of the coating film reaches 1.2-2.5mm.
Further, the protective layer adopts cement mortar with the thickness of 20mm or 40-thickness fine stone concrete, and the fine stone concrete is doped with 2-3% of cement reinforcing agent as the protective layer.
Example 2
The invention provides a technical scheme that: a permeable crystalline waterproof interface agent for building exterior wall repair, the permeable crystalline waterproof interface agent comprising: 3 parts of graphene oxide, 2 parts of starch, 2 parts of sodium citrate, 5 parts of modified sodium silicate I, 2 parts of water reducer and 0.5 part of sodium bisulphite initiator, and uniformly mixing the raw material powder to obtain a permeable crystallization type waterproof interface agent, wherein the permeable crystallization type waterproof interface agent is used in the following manner: and (3) shoveling the original outer wall until the cement base layer is exposed, cleaning floating dust, opening the V-shaped slot on the gap, and treating the V-shaped slot by using a permeable crystallization type waterproof interface agent.
Example 3
The invention provides a technical scheme that: a permeable crystalline waterproof interface agent for building exterior wall repair, the permeable crystalline waterproof interface agent comprising: 1 part of graphene oxide, 3 parts of starch, 2 parts of sodium citrate, 3 parts of modified sodium silicate I, 1 part of water reducing agent and 0.2 part of sodium bisulphite initiator, and uniformly mixing the raw material powder to obtain a permeable crystallization type waterproof interface agent, wherein the permeable crystallization type waterproof interface agent is used in the following manner: and (3) shoveling the original outer wall until the cement base layer is exposed, cleaning floating dust, opening the V-shaped slot on the gap, and treating the V-shaped slot by using a permeable crystallization type waterproof interface agent.
Example 4
The invention provides a technical scheme that: a permeable crystalline waterproof interface agent for building exterior wall repair, the permeable crystalline waterproof interface agent comprising: 2 parts of graphene oxide, 5 parts of starch, 3 parts of sodium citrate, 4 parts of modified sodium silicate I, 1.5 parts of water reducer and 0.1 part of sodium bisulphite initiator, and uniformly mixing the raw material powder to obtain a permeable crystallization type waterproof interface agent, wherein the permeable crystallization type waterproof interface agent is used in the following manner: and (3) shoveling the original outer wall until the cement base layer is exposed, cleaning floating dust, opening the V-shaped slot on the gap, and treating the V-shaped slot by using a permeable crystallization type waterproof interface agent.
Example 5
The invention provides a technical scheme that: a cement mortar reinforcing agent and a cement mortar containing the reinforcing agent are prepared from the following components: 220 parts of cement, 9 parts of water reducer, 110 parts of water, 15 parts of modified sodium silicate, and uniformly stirring mechanically, and spraying the mixture on the outer wall of a building with the dosage of 0.1-0.12L/m 2 。
Example 6
The invention provides a technical scheme that: a multifunctional elastic waterproof coating comprising: the emulsion comprises polymer emulsion, cement powder, quartz powder, calcium carbonate powder and an auxiliary agent, wherein the formula proportion of the auxiliary agent comprises the following components in percentage by mass: 5.0wt% of film forming auxiliary agent, 0.2wt% of dispersing agent A, 0.3wt% of dispersing agent B, 1.0wt% of waterproofing agent, 2.5wt% of plasticizer, 2.0wt% of anti-aging agent and 0.5wt% of defoaming agent, wherein the polymer emulsion is vinyl acetate-ethylene copolymer, the waterproofing agent is calcium stearate, the plasticizer is chlorinated paraffin, the dispersing agent A is polymethacrylic acid derivative, the dispersing agent B is sodium hexametaphosphate, the tensile strength of the obtained waterproof coating film is 2.35-2.84MPa, and the elongation at break is 270-310%.
The solid content of the multifunctional elastic waterproof paint is 60-75% when the paint is coated, the drying time is 1-2 hours, the waterproof performance (0.3 MPa,30 min) is realized, and the low-temperature flexibility is realized: no crack at-20 ℃, the tensile strength of 3.0MPa and the elongation at break of 306%; the fiber waterproof coating is coated with a bottom coating: the solid content is 39%, the heating expansion rate is 0.5%, ammonia is not contained, and the drying time is 1-2 hours.
Experimental example 1
The water repellency of the penetrating crystalline type water-repellent interface agent was verified, and the water repellency was examined by the following steps to obtain the following table:
| example 2 | Example 3 | Example 4 | |
| Primary impervious pressure/MPa | 2.8 | 3.0 | 3.1 |
| Secondary impervious pressure/MPa | 2.6 | 3.2 | 3.6 |
Conclusion: the permeable crystallization type waterproof interface agent for repairing the outer wall of a building has an impermeable effect.
Experimental example 2
The process in the embodiment 1, the permeable crystallization type waterproof interface agent, the cement mortar reinforcing agent and the fiber waterproof coating are used for removing the building outer wall with gaps, hollows and falling surfaces, and the actual effects of the two processes after 2 years, 5 years and 10 years are respectively compared by taking the construction process of the building outer wall on the market as a comparison group, so that the invention finally provides the construction process with the characteristics of convenient construction, short construction period, no water seepage and water leakage phenomenon after finishing, and good ageing resistance.
In summary, the construction process for repairing the outer wall of the building has the advantages of freeze thawing resistance, aging resistance, good ultraviolet resistance, no toxicity, environmental protection and convenient construction by plugging and reinforcing treatment gaps and cracking, and the elastic coating used by treatment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The construction process for repairing the outer wall of the building comprises the operations of cleaning the wall surface of the outer wall, waterproofing, leveling, heat preservation and decoration, and is characterized by comprising the following steps of:
step S01, cleaning and repairing: the original outer wall is shoveled out until the cement base layer is exposed, floating dust is cleaned, the gap V groove is opened, and the gap V groove is treated by using a permeable crystallization type waterproof interface agent, so that the functions of plugging, water stopping and reinforcement are achieved;
step S02, leveling: leveling by using cement mortar containing a reinforcing agent, wherein 0.5-3% of cement mortar reinforcing agent is doped in the cement mortar, leveling is performed by using cement mortar with the ratio of 1:2.5, and the leveling thickness is 1-2cm, so that a building outer wall leveling layer is obtained;
step S03, elastic waterproof: the method comprises the steps of using a multifunctional elastic waterproof base coat and a waterproof top coat, brushing the waterproof coating on a cement mortar leveling layer by using a roller, uniformly coating, drying for 4 hours, brushing the fiber waterproof coating on the base coat, uniformly coating, drying for 6 hours, and finally brushing the second top coat;
step S04, reinforcing a gap: reinforcing the crack, parapet wall, yin-yang corner and pipe root by using space cloth before decorating the paint or the protective layer, wherein the space cloth refers to a honeycomb hexagonal anti-cracking net;
step S05, heat preservation: installing an insulating layer, wherein the thickness of the insulating layer is 25-35mm, and the insulating layer comprises the following materials: binding mortar, a heat-insulating board, alkali-resistant glass fiber gridding cloth, anchor bolts, plastering mortar and a bracket, brushing a waterproof agent on the plastering mortar of the heat-insulating layer by using a roller for waterproof treatment;
step S06, decorative paint or protective layer: and (3) carrying out decorative coating on the outer wall surface of the building by using the heat insulation decorative coating or coating the outer wall of the building by using the protective layer, and constructing a second coating on the first surface after finishing the first surface.
2. A construction process for repairing an exterior wall of a building according to claim 1, wherein: the permeable crystallization type waterproof interfacial agent comprises: 1-3 parts of graphene oxide, 2-5 parts of starch, 2-3 parts of sodium citrate, 3-5 parts of modified sodium silicate I, 1-2 parts of water reducer and 0.1-0.5 part of sodium bisulfite initiator, and uniformly mixing the raw material powder to obtain the permeable crystallization type waterproof interfacial agent.
3. A construction process for repairing an exterior wall of a building according to claim 2, wherein: the preparation of the modified silicate I comprises the following steps:
step S11: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s12, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and step S13, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, after initiating for a period of time, adding a preset amount of hydrophobic long-chain organic ammonium salt modifier, and reacting for 2-4 hours under the protection of inert gas nitrogen at a constant temperature to obtain the modified sodium silicate I after polyvinyl alcohol crosslinking and organic amine modification.
4. A construction process for repairing an exterior wall of a building according to claim 3, wherein: the hydrophobic long chain organic ammonium salt comprises a quaternary ammonium salt of C16-18.
5. A construction process for repairing an exterior wall of a building according to claim 1, wherein: the cement mortar reinforcing agent is modified sodium silicate II, and the formula of the cement mortar containing the reinforcing agent is as follows: 200-240 parts of cement, 9-10 parts of water reducer, 100-120 parts of water and 10-20 parts of modified sodium silicate II, and uniformly stirring mechanically, and spraying the mixture on the outer wall of a building with the spraying dosage of 0.1-0.12L/m 2 。
6. The construction process for repairing an exterior wall of a building according to claim 5, wherein: the preparation of the modified sodium silicate II comprises the following steps:
step S21: adding a sodium silicate solution into a flask, adding a 15% polyvinyl alcohol solution and distilled water in proportion, uniformly mixing at 60 ℃, dropwise adding an emulsifier after 10min, uniformly stirring, dropwise adding an initiator after uniformly stirring, dropwise adding a 10% polyvinyl alcohol solution and distilled water with preset amounts, uniformly stirring, and curing for 24h to obtain polyvinyl alcohol crosslinked sodium silicate;
s22, putting sodium silicate crosslinked by polyvinyl alcohol into a flask, adding a certain amount of silane coupling agent and emulsifier OP-10, putting the flask into a constant-temperature water bath kettle filled with water at 40 ℃, and starting stirring;
and S23, after uniformly stirring, heating to 60 ℃, adding ammonium persulfate initiator solution in a certain proportion, initiating for a period of time, and then adding sulfamic acid, sodium dodecyl sulfate and modifier, and reacting for 2-4 hours at a constant temperature to obtain modified sodium silicate II after polyvinyl alcohol crosslinking and organic amine modification.
7. The construction process for repairing an exterior wall of a building according to claim 5, wherein: the cement mortar reinforcing agent is added into concrete or cement mortar according to the proportion, and is fully stirred after weighing, and is kept stand for 5-10 minutes after stirring, and is stirred again.
8. A construction process for repairing an exterior wall of a building according to claim 1, wherein: the multifunctional elastic waterproof coating comprises: the emulsion comprises polymer emulsion, cement powder, quartz powder, calcium carbonate powder and an auxiliary agent, wherein the formula proportion of the auxiliary agent comprises the following components in percentage by mass: 5.0wt% of film forming auxiliary agent, 0.2wt% of dispersing agent A, 0.3wt% of dispersing agent B, 1.0wt% of waterproofing agent, 2.5wt% of plasticizer, 2.0wt% of anti-aging agent and 0.5wt% of defoaming agent, wherein the polymer emulsion is vinyl acetate-ethylene copolymer, the waterproofing agent is calcium stearate, the plasticizer is chlorinated paraffin, the dispersing agent A is polymethacrylic acid derivative, the dispersing agent B is sodium hexametaphosphate, the tensile strength of the obtained waterproof coating film is 2.35-2.84MPa, and the elongation at break is 270-310%.
9. A construction process for repairing an exterior wall of a building according to claim 1, wherein: the use of the multifunctional elastic waterproof coating comprises the following steps:
step S31, preparing liquid materials: weighing polymer emulsion with a poly-ash ratio, pouring the polymer emulsion into a container, stirring and dispersing, sequentially adding a dispersing agent A, a film forming auxiliary agent, a waterproof agent and a defoaming agent in a set proportion according to a formula proportion, and uniformly mixing for later use;
step S32, preparing powder: mixing cement powder, quartz powder and calcium carbonate powder according to the proportion of 2:1:1, adding a dispersing agent and a plasticizer, uniformly stirring,
step S33, mixing liquid powder: slowly adding the stirred and dispersed liquid material into the uniformly mixed powder material, stirring and dispersing for 5-7 min at a low speed of 800-1000 rpm under a sand grinding, dispersing and stirring multi-purpose machine, fully stirring until no obvious agglomerated particles exist in the system, standing for 1-3 min after uniform stirring to reduce air bubbles, and performing the next operation;
step S34, coating: the coating is carried out for three times, the subsequent coating is carried out after the previous coating is dried, and finally the thickness of the coating film reaches 1.2-2.5mm.
10. A construction process for repairing an exterior wall of a building according to claim 1, wherein: the protective layer adopts cement mortar with the thickness of 20mm or 40-thickness fine stone concrete, and the fine stone concrete is doped with 2-3% of cement reinforcing agent as the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700727.1A CN116122614A (en) | 2022-12-28 | 2022-12-28 | Construction process for repairing building outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211700727.1A CN116122614A (en) | 2022-12-28 | 2022-12-28 | Construction process for repairing building outer wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116122614A true CN116122614A (en) | 2023-05-16 |
Family
ID=86303863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211700727.1A Pending CN116122614A (en) | 2022-12-28 | 2022-12-28 | Construction process for repairing building outer wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116122614A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101472524B1 (en) * | 2014-04-25 | 2014-12-16 | (주)통영산업건설 | Repairig cracks in concrete structures and waterproofing method for exterior wall |
| CN108868176A (en) * | 2018-06-14 | 2018-11-23 | 厦门防水博士建筑工程有限公司 | A kind of kitchen and toilet percolating water repairerment system |
| CN111502325A (en) * | 2020-04-29 | 2020-08-07 | 湖南先锋防水科技有限公司 | Repairing process for leakage of coating heat-insulation outer wall |
| CN112459526A (en) * | 2020-12-03 | 2021-03-09 | 安徽墨砂工程修缮技术有限公司 | Method for repairing external wall thermal insulation hollowing and dropping |
| CN112608106A (en) * | 2020-12-30 | 2021-04-06 | 重庆中防德邦防水技术有限公司 | Cement-based permeable crystallization type waterproof material based on graphene oxide modification and preparation method thereof |
| CN113024194A (en) * | 2021-03-10 | 2021-06-25 | 贺蕾 | Novel permeable crystallization type waterproof material for engineering and preparation method thereof |
| CN114195455A (en) * | 2021-12-17 | 2022-03-18 | 广东嘉宝莉科技材料有限公司 | Waterproof galling concrete interface treating agent and construction method thereof |
-
2022
- 2022-12-28 CN CN202211700727.1A patent/CN116122614A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101472524B1 (en) * | 2014-04-25 | 2014-12-16 | (주)통영산업건설 | Repairig cracks in concrete structures and waterproofing method for exterior wall |
| CN108868176A (en) * | 2018-06-14 | 2018-11-23 | 厦门防水博士建筑工程有限公司 | A kind of kitchen and toilet percolating water repairerment system |
| CN111502325A (en) * | 2020-04-29 | 2020-08-07 | 湖南先锋防水科技有限公司 | Repairing process for leakage of coating heat-insulation outer wall |
| CN112459526A (en) * | 2020-12-03 | 2021-03-09 | 安徽墨砂工程修缮技术有限公司 | Method for repairing external wall thermal insulation hollowing and dropping |
| CN112608106A (en) * | 2020-12-30 | 2021-04-06 | 重庆中防德邦防水技术有限公司 | Cement-based permeable crystallization type waterproof material based on graphene oxide modification and preparation method thereof |
| CN113024194A (en) * | 2021-03-10 | 2021-06-25 | 贺蕾 | Novel permeable crystallization type waterproof material for engineering and preparation method thereof |
| CN114195455A (en) * | 2021-12-17 | 2022-03-18 | 广东嘉宝莉科技材料有限公司 | Waterproof galling concrete interface treating agent and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101891565B1 (en) | Wet-curing cement mortar composition and method for protecting surface of concrete structure therewith | |
| KR101744067B1 (en) | Repair method of tall building and apartment’s exterior wall having crack and pitting | |
| KR101062734B1 (en) | Penetraton & protection coat has water-proof & anti-corrosion function, when you apply to the concrete construction and that is application method | |
| KR102072939B1 (en) | Method for Recovering and Maintaining Surface of Concrete Construction Using Maintaining Putty with High Viscosity and High elasticity | |
| KR102195453B1 (en) | Crack repairing material for concrete structure with improved water proof performance and durability and method of repairing concrete structure using the same | |
| KR101923975B1 (en) | Manufacturing method of fire retardant paint and fireproof repair material and repair method of concrete structure using the same | |
| KR101545635B1 (en) | Waterproofing mortar composition and manufacturing method using the same | |
| CN113249030B (en) | Organosilicon waterproofing agent prepared by compounding silane coupling agent with MQ silicon resin | |
| CN111574126A (en) | Self-repairing polymer cement waterproof coating and preparation method thereof | |
| KR102184164B1 (en) | Concrete section recovery and concrete surface repair method using inorganic sodium silicate which can heal self | |
| KR101796069B1 (en) | Fireproof mortar composition for preventing explosion with opf and fireproof method of concrete structure using the same | |
| KR101551842B1 (en) | Method for Repairing Deteriorate Parts in Concrete Using Mortar | |
| KR102414798B1 (en) | Crack reducing salt resistance mortar composition having excellent thixotropy and repairing and reinforcing method using the same | |
| KR101669093B1 (en) | Ceramic coating material for preventing neutralization of concrete structure and method of manufacturing and constructing thereof | |
| KR102364379B1 (en) | Crack reducing chemical resistance mortar composition having excellent workability and repairing and reinforcing method using the same | |
| WO2001002495A1 (en) | Coating composition comprising redispersible polymer, and a method of coating using them | |
| CN116122614A (en) | Construction process for repairing building outer wall | |
| CN107285673B (en) | Cement-based concrete waterproof coating and preparation and use methods thereof | |
| KR102291785B1 (en) | Latex modified rapid hardening cement concrete composition with porous filler having excellent long-term shrinkage reduction and high durability and construction method of pavement surface for bridge deck and road using the same | |
| JP2002356672A (en) | Aqueous, waterproofing agent | |
| KR100833870B1 (en) | High acid resistant concrete repair method with used sialate based inorganic polymer mortar and fluoric inorganic polymer protect coating material | |
| KR102177102B1 (en) | Coating composition | |
| KR102271043B1 (en) | Bondability improving agent for rapid hardening repair and reinforcement mortar, Rapid hardening repair and reinforcement mortar using the same and Method of repair and reinforcement of concrete structure using the same | |
| KR20120108684A (en) | Water-soluble composite for strengthening and protecting the outer layer of concrete block, manufacturing method of concrete block, and method for strengthing the outer layer of concrete block using the composite | |
| CN114560665B (en) | Phase-change thermal-insulation facing mortar for building inner wall and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |