CN105859234A - Rapid repair mortar and repair process special for autoclaved aerated concrete slab - Google Patents
Rapid repair mortar and repair process special for autoclaved aerated concrete slab Download PDFInfo
- Publication number
- CN105859234A CN105859234A CN201610190171.4A CN201610190171A CN105859234A CN 105859234 A CN105859234 A CN 105859234A CN 201610190171 A CN201610190171 A CN 201610190171A CN 105859234 A CN105859234 A CN 105859234A
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- China
- Prior art keywords
- mortar
- repair
- aerated concrete
- mending
- steam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—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 calcium sulfate cements
-
- 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
- C04B28/04—Portland cements
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a rapid repair mortar and a repair process for an autoclaved aerated concrete slab. The repair mortar takes gypsum mortar as a substrate material doped with a functional admixture, and is characterized by comprising the following components in parts by weight: 90-100 parts of gypsum mortar, 0.5-1.5 parts of an additive, and 25-30 parts of a retarder aqueous solution. The repair process comprises the following steps: cleaning a damaged surface, mixing the repair mortar, smearing a small amount of the mortar on the damaged surface and squeezing and compacting the mortar at first, then filling a damaged part compactly with a large amount of the mortar, trimming and flattening the mortar after final set of the mortar, and finally, performing polishing. The repair technology has the characteristics of convenience in operation, high repair speed, basically no chromatic aberration, and firm agglutination between the repair mortar and an autoclaved aerated concrete base, and the like, so that the repair efficiency can be greatly improved, and the damage rate is reduced.
Description
Technical field
The invention belongs to building material field, particularly to a kind of steam-aerated concrete plate quick repair technology.
Background technology
Steam-aerated concrete plate is with silicon, calcium as raw material, with aluminium powder (cream) as foaming agent, strengthens, through high temperature, the high-performance of autoclave curing, many aerocretes sheet forming with the reinforcing bar through antirust treatment.It has the features such as light weight, good heat insulating, preferable machinability, speed of application is fast, bearing capacity is strong, comprehensive cost is low, can be used for industry and body of wall, floor and the roof boarding in civil buildings.It it is a kind of country novel energy-saving construction material of advocating use energetically.But, air entrained concrete sheet material belongs to brittle prod, cutting, breaking board in process of production, go out that still lifts, transports, the link such as installation easily produces collision, extruding to aerated concrete panel, cause plate surface damaged, have a strong impact on presentation quality and the properties of product of sheet material, reduce the yield rate of product, affect the economic benefit of enterprise.
According to code requirement, the damage limited in size range can be done repairing treatment, to improve the presentation quality of air entrained concrete sheet material product, reduce percent defective and defect ware rate, improve Business Economic Benefit.
At present, relevant report for steam-aerated concrete plate repairing technique is few, CN103951340A discloses a kind of special mending mortar of low-density autoclaved aerated concrete slab, it is to form based on white portland cement mixing, and cement mortar drying shrinkage is more serious, easy to crack after repairing, and setting time is long, causing repairing cycle stretch-out, repairing efficiency is low, needs to take to stack place in a large number.Disclosing the method for repairing and mending of a kind of steam-pressing aero-concrete defect sheet material in CN102535733A, after mending mortar smears 2～4 hours, could carry out finishing process with cutter, also result in repairing cycle stretch-out, repairing efficiency is low.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, provide a kind of steam-aerated concrete plate quick repair technology at this, this repairing technique includes mending mortar and repair technology, and additionally the present invention also provides for the preparation method of this mending mortar mixture；Described repair technology includes each steps and operations order of mending course.This repairing technique have easy to operate, repair speed difference fast, substantially colorless, the feature such as mending mortar and air entrained concrete basic unit are firmly bonded, be greatly improved repairing efficiency, reduce breakage rate.
The present invention is realized in, a kind of special quick repair technology of steam-aerated concrete plate of structure, it is characterized in that: this technology includes mending mortar and repair technology, the parts by weight of each component of this mending mortar are: gypsum mortar 90-100, additive 0.5-1.5, retarder aqueous solution is 25-30；
Its step of repair technology includes: the damaged face of cleaning, mixes and stirs mending mortar, a small amount of mortar is first applied in damaged face dense extrusion, then is filled by breakage closely knit with a large amount of mortars, repaired, strike off, finally polish after mortar final set.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: in mending mortar, each composition weight number of described gypsum mortar is Gypsum Fibrosum powder 55-60, flyash 28-33, fine sand 5-10.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: described Gypsum Fibrosum powder is building gypsum plaster, and flyash is light grey first level flour coal ash, and fine sand fineness is 70-140 mesh.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: in mending mortar, each composition weight number of described additive is redispersable latex powder 0.5-0.8, water-retaining agent 0.1-0.3.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: the water-retaining agent in mending mortar is hydroxypropyl methyl cellulose ether；The water retention property of mending mortar can be strengthened, it is ensured that the workability of mending mortar.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: in mending mortar, described retarder aqueous solution is tripolyphosphate sodium water solution, and concentration is 0.20-0.25%；The up time making mending mortar mixture extends to 25-35min, and 10-30min can carry out striking off process after guaranteeing to repair, it is achieved Rapid-Repair.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterized in that: mending mortar, mixture compound method is, first described gypsum mortar and additive weighed in described ratio and stir, make repairing dry powder and mortar stand-by, simultaneously stand-by, during use by described concentration preparation tripolyphosphate sodium water solution, being added in mending mortar siccative mixture by tripolyphosphate sodium water solution in proportion and stir, making mortar mixture can use.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterised in that: the available time of mending mortar mixture is 30 ± 5min, can not add water stirring and be continuing with after mortar final set.
According to a kind of special quick repair technology of steam-aerated concrete plate of the present invention, it is characterized in that: repair technology is the damaged face of cleaning, mix and stir mending mortar, first a small amount of mortar is applied in damaged face dense extrusion, with a large amount of mortars, breakage filled closely knit again and repair, strike off, its process follow following steps and order:
A: cleaned down by defect face wire brush, removes floating ash and scum silica frost；
B: regard damaged face size, takes a certain amount of mending mortar and adds retarder aqueous solution to stir into mortar mixture stand-by；
C: solution: mortar=1:3.5-4.0, mortar mixture denseness preferably controls at 30-50mm；
D: a small amount of mortar mixture is spread upon damaged face and seam crossing, and with ash cutter dense extrusion to add the bonding of strength mortar and sheet material itself；
E: with ash cutter, wooden or iron baffle plate, being smeared by whole breakage closely knit full with a large amount of mortars, make mortar exceed sheet material 1 ~ 2mm, mortar surface is the most floating, waits final set；
F: depending on breakage size cases and temperature, has repaired 10 ~ 30min after mortar final set, uses the instruments such as scraper to repair repairing body, strike off process；
G: mortar to be repaired is dried, by sand paper or mild steel wire brush, mend is carried out grinding process；
H: the repairing of damaged larger part should be carried out at twice；The breakage repaired the same day, should complete all repair procedure on the same day.
In the present invention, described building gypsum plaster, flyash substantially keep consistent with the color of fine sand adjustable mending mortar with steam-aerated concrete plate.Described redispersable latex powder can improve the cohesion between mending mortar air entrained concrete sheet material, it is ensured that repairing quality.The mixture preparation method of described mending mortar is: first each siccative component is weighed by described parts by weight and stirs, it is prepared as dry-mixed mortar stand-by, simultaneously stand-by by described concentration preparation tripolyphosphate sodium water solution, during use, by described parts by weight by the tripolyphosphate sodium water solution described dry-mixed mortar of addition stirs, can use.
It is an advantage of the current invention that: the present invention is for overcoming problems of the prior art, a kind of steam-aerated concrete plate quick repair technology is provided, this repairing technique includes mending mortar and repair technology, the parts by weight of each component of this mending mortar are: gypsum mortar 90-100, additive 0.5-1.5, retarder aqueous solution 25-30, each composition weight number of wherein said gypsum mortar is Gypsum Fibrosum powder 55-60, flyash 28-33, fine sand 5-10；Each composition weight number of wherein said additive is redispersable latex powder 0.5-0.8, water-retaining agent 0.1-0.3；Additionally the present invention also provides for the preparation method of this mending mortar mixture；Described repair technology includes each steps and operations order of mending course.This repairing technique have easy to operate, repair speed difference fast, substantially colorless, the feature such as mending mortar and air entrained concrete basic unit are firmly bonded, be greatly improved repairing efficiency, reduce breakage rate.It is embodied in:
1. substantially colorless difference between the present invention and steam-aerated concrete plate, has identical texture, has good impression quality；
2. present invention 10-30min after repairing can carry out striking off process, and the cycle of repairing reduces, and repairing efficiency is greatly improved, and reduces and stacks place；
The up time of mending mortar mixture the most of the present invention is 25-35min, reduces waste, adequate operation；
4. the present invention has good stronger cohesion and cracking resistance, improves repairing quality.
Accompanying drawing explanation
Fig. 1 is mending mortar preparation and repair technology flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, the present invention is described in detail, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
The present invention is for overcoming problems of the prior art, a kind of steam-aerated concrete plate quick repair technology is provided, this repairing technique includes mending mortar and repair technology, the parts by weight of each component of this mending mortar are: gypsum mortar 90-100, additive 0.5-1.5, retarder aqueous solution 25-30, each composition weight number of wherein said gypsum mortar is Gypsum Fibrosum powder 55-60, flyash 28-33, fine sand 5-10；Each composition weight number of wherein said additive is redispersable latex powder 0.5-0.8, water-retaining agent 0.1-0.3；Additionally the present invention also provides for the preparation method of this mending mortar mixture；Described repair technology includes each steps and operations order of mending course.Can be practiced as follows:
Embodiment 1: be mixed and stirred for uniformly by 60kg building gypsum plaster, 30kg first level flour coal ash, 9.1kg fine sand, 0.8kg redispersable latex powder and 0.1kg hydroxypropyl methyl cellulose ether, adds 28kg tap water and stirs, obtain mending mortar mixture.
By gained mending mortar mixture according to standard testing comprcssive strength, expansion rate, setting time, and carry out repairing work by described repair technology, the big 1.2MPa of compressive strength rate air entrained concrete sheet material, after 4h, expansion rate no longer increases, final setting time is 6min, dried mending mortar color keeps consistent substantially with air entrained concrete sheet material, and 3 months frees from flaw of repairing body produce.Compared with the mending mortar disclosed in CN103951340A and CN102535733A, final setting time is too short, greatly speeds up although repairing speed, but mending mortar mixture operable time is too short, is not suitable for repairing work.
Embodiment 2: be mixed and stirred for uniformly by 60kg white cement, 30kg first level flour coal ash, 9.1kg fine sand, 0.8kg redispersable latex powder and 0.1kg hydroxypropyl methyl cellulose ether, adds 28kg tap water and stirs, obtain mending mortar mixture.
By gained mending mortar mixture according to standard testing comprcssive strength, expansion rate, setting time, and carry out repairing work by described repair technology, comprcssive strength is 2.5 times of air entrained concrete sheet material, within 28 days, post-shrinkage ratio still has increase, final setting time is 4h, dried mending mortar color keeps consistent substantially with air entrained concrete sheet material, and repairing body i.e. has crack to produce for 1 month.Compared with the mending mortar disclosed in CN103951340A and CN102535733A, final setting time is unchanged, and repairing efficiency, without significantly improving, is not suitable for repairing work.
Embodiment 3: in the repairing dry powder and mortar that will prepare in embodiment 1, adds the borax solution that 28kg concentration is 0.40% and stirs, obtain mending mortar mixture.
By gained mending mortar mixture according to standard testing comprcssive strength, expansion rate, setting time, and carry out repairing work by described repair technology, the big 0.8MPa of compressive strength rate air entrained concrete sheet material, after 4h, expansion rate no longer increases, final setting time is 10min, dried mending mortar color keeps consistent substantially with air entrained concrete sheet material, and 3 months frees from flaw of repairing body produce.Compared with the mending mortar disclosed in CN103951340A and CN102535733A, final setting time is too short, greatly speeds up although repairing speed, but mending mortar mixture operable time is too short, is not suitable for repairing work.
Embodiment 4: in the repairing dry powder and mortar that will prepare in embodiment 1, adds the tripolyphosphate sodium water solution that 28kg concentration is 0.20% and stirs, obtain mending mortar mixture.
By gained mending mortar mixture according to standard testing comprcssive strength, expansion rate, setting time, and carry out repairing work by described repair technology, the big 0.5MPa of compressive strength rate air entrained concrete sheet material, after 4h, expansion rate no longer increases, final setting time is 30min, dried mending mortar color keeps consistent substantially with air entrained concrete sheet material, and 3 months frees from flaw of repairing body produce.Compared with the mending mortar disclosed in CN103951340A and CN102535733A, final setting time is shorter and moderate, and repairing efficiency improves more than 6 times, and mending mortar mixture operable time is 25-35min, suitable repairing work.
Beneficial effect:
1. substantially colorless difference between the present invention and steam-aerated concrete plate, has identical texture, has good impression quality；
2. present invention 10-30min after repairing can carry out striking off process, and the cycle of repairing reduces, and repairing efficiency is greatly improved, and reduces and stacks place；
The up time of mending mortar mixture the most of the present invention is 25-35min, reduces waste, adequate operation；
4. the present invention has good stronger cohesion and cracking resistance, improves repairing quality.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. the special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: the parts by weight of each component of this mending mortar are: gypsum mortar 90-100, additive 0.5-1.5, and retarder aqueous solution is 25-30；
Its step of repair technology includes: the damaged face of cleaning, mixes and stirs mending mortar, a small amount of mortar is first applied in damaged face dense extrusion, then is filled by breakage closely knit with a large amount of mortars, repaired, strike off, finally polish after mortar final set.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: in mending mortar, each composition weight number of described gypsum mortar is Gypsum Fibrosum powder 55-60, flyash 28-33, fine sand 5-10.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: described Gypsum Fibrosum powder is building gypsum plaster, and flyash is light grey first level flour coal ash, and fine sand fineness is 70-140 mesh.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: in mending mortar, each composition weight number of described additive is redispersable latex powder 0.5-0.8, water-retaining agent 0.1-0.3.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: the water-retaining agent in mending mortar is hydroxypropyl methyl cellulose ether.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: in mending mortar, described retarder aqueous solution is tripolyphosphate sodium water solution, and concentration is 0.20-0.25%.
A kind of special rapid-patching motar of steam-aerated concrete plate the most according to claim 1, it is characterized in that: mending mortar, mixture compound method is, first described gypsum mortar and additive weighed in described ratio and stir, make repairing dry powder and mortar stand-by, simultaneously stand-by, during use by described concentration preparation tripolyphosphate sodium water solution, being added in mending mortar siccative mixture by tripolyphosphate sodium water solution in proportion and stir, making mortar mixture can use.
A kind of special rapid-patching motar of steam-aerated concrete plate, it is characterised in that: the available time of mending mortar mixture is 30 ± 5min, can not add water stirring and be continuing with after mortar final set.
9. the special quick-repair technology of steam-aerated concrete plate, it is characterized in that: repair technology is the damaged face of cleaning, mix and stir mending mortar, first a small amount of mortar is applied in damaged face dense extrusion, with a large amount of mortars, breakage filled closely knit again and repair, strike off, its process follow following steps and order:
A: cleaned down by defect face wire brush, removes floating ash and scum silica frost；
B: regard damaged face size, takes a certain amount of mending mortar and adds retarder aqueous solution to stir into mortar mixture stand-by；
C: solution: mortar=1:3.5-4.0, mortar mixture denseness preferably controls at 30-50mm；
D: a small amount of mortar mixture is spread upon damaged face and seam crossing, and with ash cutter dense extrusion to add the bonding of strength mortar and sheet material itself；
E: with ash cutter, wooden or iron baffle plate, being smeared by whole breakage closely knit full with a large amount of mortars, make mortar exceed sheet material 1 ~ 2mm, mortar surface is the most floating, waits final set；
F: depending on breakage size cases and temperature, has repaired 10 ~ 30min after mortar final set, uses the instruments such as scraper to repair repairing body, strike off process；
G: mortar to be repaired is dried, by sand paper or mild steel wire brush, mend is carried out grinding process；
H: the repairing of damaged larger part should be carried out at twice；The breakage repaired the same day, should complete all repair procedure on the same day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610190171.4A CN105859234A (en) | 2016-03-30 | 2016-03-30 | Rapid repair mortar and repair process special for autoclaved aerated concrete slab |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610190171.4A CN105859234A (en) | 2016-03-30 | 2016-03-30 | Rapid repair mortar and repair process special for autoclaved aerated concrete slab |
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| CN105859234A true CN105859234A (en) | 2016-08-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191363A (en) * | 2017-02-18 | 2018-06-22 | 四川华邦保和涂料有限公司 | A kind of preparation method for the fast hard material of quick-drying for being used to get ready floating screed |
| CN109180117A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | A kind of concrete structure appearance chromatic difference patching material and its construction method |
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Inventor after: Wu Xin Inventor after: Liu Dengxian Inventor after: Hu Jiang Inventor after: Yuan Zeyang Inventor after: Zhang Xu Inventor after: Yu Shichao Inventor before: Wu Xin Inventor before: Liu Dengxian Inventor before: Yuan Zeyang Inventor before: Zhang Xu Inventor before: Yu Shichao |
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