CN111677210A - Gypsum mortar construction process - Google Patents
Gypsum mortar construction process Download PDFInfo
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- CN111677210A CN111677210A CN202010531915.0A CN202010531915A CN111677210A CN 111677210 A CN111677210 A CN 111677210A CN 202010531915 A CN202010531915 A CN 202010531915A CN 111677210 A CN111677210 A CN 111677210A
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- plastering
- mortar
- gypsum
- dotting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
- E04F13/047—Plaster carrying meshes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
- E04F13/06—Edge-protecting borders
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a gypsum mortar construction process, which comprises the following steps: the process flow of gypsum mortar plastering is as follows: base course processing → dotting → net hanging → screeding → material applying and plastering → repairing of internal and external corners → measurement and inspection → smoothing and repairing → maintenance. The construction method can overcome the problems of hollowing and cracking easily existing in the prior art for constructing the gypsum mortar, and the method has simple and convenient process and easy operation, can improve the construction efficiency and save the construction cost.
Description
Technical Field
The invention relates to the technical field of plastering mortar, in particular to a gypsum mortar construction process.
Background
The gypsum mortar is also called plastering gypsum, and is a plastering material mainly prepared by using hemihydrate gypsum (CaSO4 & 1/2H2O) as a cementing material and adding a filler and an additive. In the gypsum mortar, the gypsum plastering material containing the light aggregate is used for leveling the substrate, namely the light plastering gypsum. Compared with the traditional cement mortar, the light plastering gypsum has the characteristics of good construction performance, high coating rate, short construction period, difficult hollowing and cracking and the like, and particularly reduces the later maintenance cost in a fine decoration project.
The gypsum mortar can be divided into the following components according to the classification of the chemical components of the gypsum mortar: ardealite and desulfurized gypsum, the ardealite raw material is the waste material of chemical fertilizer plant to reprocess gypsum, the color of plaster mortar plastering is similar to that of traditional cement mortar. The desulfurized gypsum is the waste reprocessed gypsum of a thermal power plant, and compared with the traditional cement mortar material, the plastering color is slightly yellow. The construction method can be divided into the following steps: mechanical plastering gypsum and manual plastering gypsum.
The construction of gypsum mortar has strict requirements. GB/T28627-2012 plastering gypsum has standard requirements on initial setting, final setting time, breaking and compression strength, bonding strength, water retention rate and the like of the light plastering gypsum, wherein the bonding strength represents the bonding firmness of the gypsum and a base surface and directly influences whether hollowing exists in the later stage. JC/T841-2007 alkali-resistant fiberglass gridding cloth makes clear requirements on the performance indexes of the fiberglass mesh, and the fiberglass mesh is used as a reinforcing material at the joint of different base layer materials and plays an important role in preventing the plastering layer from cracking. In order to ensure the bonding quality of gypsum mortar plastering, a concrete base layer needs to be coated with a special concrete interface agent, the solid content of the emulsion type concrete wall interface agent is not lower than 10 percent, ethylene vinyl acetate copolymer Emulsion (EVA) or acrylic emulsion and the like.
Therefore, the skilled in the art needs to consider how to overcome the problems of hollowing, cracking, etc. in the construction of gypsum mortar.
Disclosure of Invention
The invention aims to provide a gypsum mortar construction process to overcome the defects of the existing construction method.
The technical scheme of the invention is as follows:
a gypsum mortar construction process comprises the following process flows of gypsum mortar plastering: base course processing → dotting → net hanging → screeding → material applying and plastering → repairing of internal and external corners → measurement and inspection → smoothing and repairing → maintenance.
Wherein, the basic layer treatment comprises: plugging the screw hole, leveling the base layer and ensuring that the vertical flatness of the base layer reaches the standard; cleaning the bubble holes of the base layer, removing surface pollutants and ensuring the base layer to be neat and clean; the concrete base layer is coated with a special interface agent, and the masonry wall surface can be subjected to water spraying and wetting treatment.
Further, dotting comprises: determining the plastering thickness according to the vertical flatness of the concrete surface and the standard of masonry materials, and determining the dotting reference thickness; determining a dotting position and dotting thickness by using a laser positioner; plastering and dotting on the wall surface by using gypsum mortar, wherein the dotting distance is not more than 1.5 m; the distance between the upper and lower dotting positions and the ground is controlled to be 400mm and 1700 mm.
Further, the net comprises: sequentially hanging glass fiber nets at the joints of different materials, wherein the mesh size of the glass fiber nets is not more than 4mm multiplied by 4 mm; embedding a glass fiber net in the pipe line groove before plastering and sealing the pipe line groove, and closing the pipe line groove by using special plugging mortar; the total width of the glass fiber mesh cloth is not less than 300mm, and the lap joint width with each base layer wall is not less than 100 mm.
Further, the punching rib comprises: when the reinforcement is punched, the mixed cement mortar is smeared on the reinforcement aluminum profile; placing the aluminum profile on a stably formed punching point position, controlling the punching rib forming thickness through the punching point thickness, and simultaneously cleaning redundant mortar on two sides of the rib position, wherein each rib is ensured to be vertical to the ground; and after the mortar is stably solidified at the reinforcement punching position, taking down the reinforcement punching section to finish reinforcement punching.
Further, the material loading plastering comprises: the manual feeding and plastering are smeared twice, and the first time is smeared and pressed on the gypsum mortar from top to bottom along the vertical direction; secondly, smearing and pressing the light plastering gypsum in the horizontal direction; the directions of the two smearing and pressing are vertical.
Further, the restoration of the internal and external corners comprises: after plastering is finished, the vertical flatness and the closing quality of mortar plastering at each internal and external corner position are checked; the external corners of the indoor wall surface and the cylindrical surface and the external corners of the door and window openings require straight and clear line angles, and the aluminum alloy guiding rule is used for closing in the repairing process; when the internal and external corners are repaired, construction is carried out after the gypsum mortar on the two sides of the internal and external corners are dried and hardened, and laser or line hammer fishing is adopted in the repairing process to ensure that the corners are flat and vertical and are controlled within a specified range.
Compared with the prior art, the construction method can overcome the problems of hollowing and cracking easily existing in the prior art for constructing the gypsum mortar, and the method has simple and convenient process, is easy to operate, can improve the construction efficiency and saves the construction cost.
Drawings
FIG. 1 is a process flow diagram and a control focus diagram of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the following examples. The traditional cement mortar plastering construction process is as follows: cleaning a base layer → napping → dotting → hanging a net → spraying water on the base layer → plastering bottom ash → plastering a middle layer of ash → plastering a top layer of ash → maintaining for 7 days → coating of the top layer.
The gypsum mortar plastering flow of the application is as follows: base course processing → dotting → net hanging → screeding → material applying and plastering → repairing of internal and external corners → measurement and inspection → smoothing and repairing → maintenance.
The basic layer processing steps are as follows: the screw hole is plugged, the base level, and the vertical flatness of the base is guaranteed to reach the standard. The bubble holes of the base layer are cleaned, surface pollutants are removed, and the base layer is ensured to be clean and tidy. The concrete base layer is coated with a special interface agent, and the masonry wall surface can be subjected to water spraying and wetting treatment.
Dotting steps are as follows: and determining the plastering thickness according to the vertical flatness of the concrete surface and the standard of masonry materials, so as to determine the dotting reference thickness. Determining a dotting position and dotting thickness by using a laser positioner; plaster and dotting on the wall surface by using the gypsum mortar, wherein the dotting distance is not more than 1.5 m. The distance between the upper and lower dotting positions and the ground is controlled to be 400mm and 1700 mm.
The net hanging steps are as follows: and (3) sequentially spreading glass fiber nets at the joints of different materials, wherein the mesh size of the glass fiber nets is not more than 4mm multiplied by 4 mm. The pipe line groove is pre-buried with the glass fiber net before the pipe line groove is plastered and sealed, and the pipe line groove is closed with special plugging mortar. The total width of the glass fiber mesh cloth is not less than 300mm, and the lap joint width with each base layer wall is not less than 100 mm.
The rib punching step is as follows: when the reinforcement is punched, the mixed cement mortar is smeared on the reinforcement aluminum profile. Placing the aluminum profile on a stably formed punching point position, controlling the punching rib forming thickness through the punching point thickness, and simultaneously cleaning redundant mortar on two sides of the rib position, wherein each rib is ensured to be vertical to the ground. And after the mortar is stably solidified at the reinforcement punching position, taking down the reinforcement punching section to finish reinforcement punching. When the convex-concave angle position is punched, two section bars can be matched or a single section bar can be treated in a double-sided plastering mode. The interval between the punching ribs should not exceed 1.5m, the width of the punching ribs is controlled within the range of 20-30 mm, and each punching rib must extend to the top and the bottom of the plate to realize 'top standing place'.
The steps of loading and plastering are as follows: when the manual feeding and plastering are carried out, the coating is carried out twice, and the two times of coating can be continuously carried out under general conditions. The first time, the gypsum mortar is smeared and pressed from top to bottom along the vertical direction, and the first time needs to press the mortar by a steel trowel with little effort, so that the gypsum mortar is firmly adhered to the base wall. And secondly, coating and pressing the light plastering gypsum in the horizontal direction. The directions of smearing and pressing for two times are required to be vertically carried out, so that the light plastering gypsum and the base wall have good bonding effect. When the thickness of the plastering layer exceeds 15mm, plastering in layers, controlling the thickness of each layer within 10mm, and plastering the next layer after the last layer of slurry is finally set. Plastering construction is divided into two times in an area with stronger air circulation (larger wind pressure); in a high-temperature environment, the aerated concrete block absorbs water quickly, and construction is carried out twice. When the machine is selected for spraying, the spraying power of the spray gun is well controlled, mortar is uniformly sprayed on the wall surface, and then the wall surface is leveled and compacted by using the special aluminum alloy scraper so as to be level and vertical. When the scraping ruler is used, the scraping ruler is used for screeding from bottom to top along the direction of the punching rib, and the scraped materials are used for supplementing materials to the concave part, so that screeding is performed once or twice as much as possible. The scraping ruler is used for scraping and the next construction unit can be carried out after the scraping ruler is independently finished by taking a punching rib interval as a construction unit.
The method for repairing the internal and external corners comprises the following steps: after plastering is finished, the vertical flatness and closing quality of mortar plastering at each internal and external corner position are checked. The external corners of the indoor wall surface and the cylindrical surface and the external corners of the door and window openings require straight and clear line angles, and aluminum alloy guiding rules are used for closing during repair. When the internal and external corners are repaired, construction is carried out after the gypsum mortar on the two sides of the internal and external corners are dried and hardened, and the corners are straightened by adopting laser or a line hammer in the repairing process to ensure that the corners are flat and vertical and are controlled within a specified range.
The measuring, checking and rubbing repair steps comprise: and (4) measuring actual measurement on the wall surface after the gypsum mortar plastering construction according to a unified standard. Rubbing and polishing the area with the flatness not meeting the requirement by using a planer tool; and eliminating or plastering and repairing the explosion points and other parts. After the repair is finished, actual measurement should be carried out again, and the plastering quality after the correction is ensured to reach the standard.
The final curing step comprises: the constructed wall surface is prevented from colliding and being soaked by water, and indoor ventilation is kept. The gypsum mortar is an inorganic material and does not go moldy, but does not belong to a mildew-proof material, and the ventilation and drying of construction and use environments are ensured, so that a covering object cannot be placed on a finished surface which is not completely dried.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A gypsum mortar construction process is characterized in that: the process flow of gypsum mortar plastering is as follows: base course processing → dotting → net hanging → screeding → material applying and plastering → repairing of internal and external corners → measurement and inspection → smoothing and repairing → maintenance.
2. The gypsum mortar construction process of claim 1, wherein: the base layer processing comprises: plugging the screw hole, leveling the base layer and ensuring that the vertical flatness of the base layer reaches the standard; cleaning the bubble holes of the base layer, removing surface pollutants and ensuring the base layer to be neat and clean; the concrete base layer is coated with a special interface agent, and the masonry wall surface can be subjected to water spraying and wetting treatment.
3. The gypsum mortar construction process of claim 1, wherein: the dotting comprises the following steps: determining the plastering thickness according to the vertical flatness of the concrete surface and the standard of masonry materials, and determining the dotting reference thickness; determining a dotting position and dotting thickness by using a laser positioner; plastering and dotting on the wall surface by using gypsum mortar, wherein the dotting distance is not more than 1.5 m; the distance between the upper and lower dotting positions and the ground is controlled to be 400mm and 1700 mm.
4. The gypsum mortar construction process of claim 1, wherein: the net hanging comprises: sequentially hanging glass fiber nets at the joints of different materials, wherein the mesh size of the glass fiber nets is not more than 4mm multiplied by 4 mm; embedding a glass fiber net in the pipe line groove before plastering and sealing the pipe line groove, and closing the pipe line groove by using special plugging mortar; the total width of the glass fiber mesh cloth is not less than 300mm, and the lap joint width with each base layer wall is not less than 100 mm.
5. The gypsum mortar construction process of claim 1, wherein: the punching rib comprises: when the reinforcement is punched, the mixed cement mortar is smeared on the reinforcement aluminum profile; placing the aluminum profile on a stably formed punching point position, controlling the punching rib forming thickness through the punching point thickness, and simultaneously cleaning redundant mortar on two sides of the rib position, wherein each rib is ensured to be vertical to the ground; and after the mortar is stably solidified at the reinforcement punching position, taking down the reinforcement punching section to finish reinforcement punching.
6. The gypsum mortar construction process of claim 1, wherein: the material loading plastering comprises: the manual feeding and plastering are smeared twice, and the first time is smeared and pressed on the gypsum mortar from top to bottom along the vertical direction; secondly, smearing and pressing the light plastering gypsum in the horizontal direction; the directions of the two smearing and pressing are vertical.
7. The gypsum mortar construction process of claim 1, wherein: the internal and external corner repair comprises: after plastering is finished, the vertical flatness and the closing quality of mortar plastering at each internal and external corner position are checked; the external corners of the indoor wall surface and the cylindrical surface and the external corners of the door and window openings require straight and clear line angles, and the aluminum alloy guiding rule is used for closing in the repairing process; when the internal and external corners are repaired, construction is carried out after the gypsum mortar on the two sides of the internal and external corners are dried and hardened, and laser or line hammer fishing is adopted in the repairing process to ensure that the corners are flat and vertical and are controlled within a specified range.
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| CN202010531915.0A CN111677210A (en) | 2020-06-11 | 2020-06-11 | Gypsum mortar construction process |
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| CN202010531915.0A CN111677210A (en) | 2020-06-11 | 2020-06-11 | Gypsum mortar construction process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880489A (en) * | 2021-11-08 | 2022-01-04 | 苏州国建慧投矿物新材料有限公司 | Light plastering gypsum interface agent and application thereof |
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