阅读说明：本技术 一种预铸式玻璃纤维加强石膏板grg的加工工艺 (Processing technology of pre-cast glass fiber reinforced gypsum board GRG ) 是由 王翔 笪俊 张游 于 2020-05-14 设计创作，主要内容包括：本发明公开了一种预铸式玻璃纤维加强石膏板GRG的加工工艺,该GRC的生产工艺包括以下几个步骤：GRG原材料的检测；制模,GRG型材的生产,采用翻模生产工艺进行,在制作模具时,尺寸上应考虑所需生产拼接处预留10mm填缝空间,在GRG的生产时,每一个模具应对应一个产品的配料单,生产产品严格按照配料单进行配料搅拌生产；GRG型材的生产；本发明所述的一种预铸式玻璃纤维加强石膏板GRG的加工工艺,此种材料可制成各种平面板、各种功能型产品及各种艺术造型,是目前国际上建筑装饰材料界流行的更新换代产品,由于GRG材料的防水性能和良好的声学性能,尤其适用于频繁的清洁洗涤和声音传输的地方,同时加工工艺简单,具有实用性。(The invention discloses a processing technology of a pre-cast glass fiber reinforced gypsum board GRG, and the production technology of the GRC comprises the following steps: detecting GRG raw materials; the method comprises the following steps of (1) molding, wherein the production of GRG sectional materials is carried out by adopting a mold turnover production process, when the molds are manufactured, 10mm gap filling space is reserved at a production splicing position in consideration of the size, when GRG is produced, each mold corresponds to a burdening list of a product, and the produced products are strictly subjected to burdening and stirring production according to the burdening list; production of GRG section; the processing technology of the pre-cast glass fiber reinforced gypsum board GRG can be used for manufacturing various plane boards, various functional products and various artistic models, is a current and updated product popular in the building and decoration material world internationally, is especially suitable for places with frequent cleaning and sound transmission due to the waterproof performance and good acoustic performance of the GRG material, and has simple processing technology and practicability.)

1. A processing technology of a precast glass fiber reinforced gypsum board GRG is characterized in that the production technology of the GRC comprises the following steps:

step one, detecting GRG raw materials;

step two, molding, namely producing GRG sectional materials by adopting a mold turnover production process, wherein when the mold is manufactured, a 10mm gap filling space is reserved at a production splicing position in consideration of the size, when GRG is produced, each mold corresponds to a burdening list of a product, and the produced product is strictly subjected to burdening stirring production according to the burdening list;

step three, the production of GRG section bar, produce and make according to the pasting method basically, the production of GRG divides four layers of gypsum thick liquid three-layer glass fiber felt to brush and apply paint the construction, the surface layer + second layer gypsum + glass fiber + second layer gypsum + built-in fitting + second layer glass fiber + third layer gypsum + third layer glass fiber + fourth layer gypsum, the surface layer: after the surface gypsum slurry is coated, the surface gypsum slurry is placed for about 10 minutes, and the next procedure can be continuously carried out after the gypsum slurry is initially set; laminating: during lamination construction, each layer of gypsum slurry is ensured to permeate into the glass fiber layer, and hollowing caused by the fact that glass fibers are not soaked by the gypsum slurry is avoided;

step four, after the curing and heating period of the product, when demoulding is carried out, when the four-side flange edge mould exists, the product can be separated from the mould after the four-side flange edge mould is disassembled;

step five, within 48 hours of taking the product off the mold, placing the product on a support frame or a flat ground, and preparing a support structure;

step six: after the GRG section is produced, the GRG section is placed on an original mould for maintenance, and the control of GRG deformation can be well achieved by prolonging the demoulding time.

Step seven: and (3) transporting the GRG sectional material, wherein after the GRG sectional material is processed and shaped, the GRG sectional material is transported by generally adopting a batten as a support.

2. The process of claim 1, wherein the GRG is prepared by the following steps: the GRG adopts alpha variant in hemihydrate gypsum as a basic raw material, the alpha-gypsum powder-gypsum ratio is controlled to be 24:100, and when gypsum slurry is prepared, the water-gypsum ratio is 1: 3.1-1: 3.3, the production is carried out.

3. The process of claim 1, wherein the GRG is prepared by the following steps: the moulds required for producing GRG section bars comprise wood moulds, glass steel moulds, silica gel moulds, paraffin or gypsum.

4. The process of claim 1, wherein the GRG is prepared by the following steps: and during stirring, pouring the weighed gypsum powder into the weighed water, and stirring immediately for not less than 30 s.

5. The process of claim 1, wherein the GRG is prepared by the following steps: after production, demolding needs to be carried out after the heating period of the product, and the time is 1.5 h.

Technical Field

The invention belongs to the field of GRG, and particularly relates to a processing technology of a precast glass fiber reinforced gypsum board GRG.

Background

The GRG product is a precast novel decorative material which is formed by laminating a special process on a die by adopting GRG special gypsum-superfine crystalline gypsum (improved alpha gypsum) as a base material, special continuous rigid reinforced glass fiber and a special additive (meeting the requirement of an additive in an original British factory) developed by China, and the comprehensive performance of the precast novel decorative material reaches the quality standard of British. The product has smooth and white surface, smooth and bright material surface, whiteness of more than 90 percent, high-quality molding surface which is beneficial to the spraying treatment of any coating, excellent decorative effect, environmental protection, safety, no harmful elements and product characteristics: the technology is mainly used for processing precast glass fiber reinforced gypsum board GRG, which has thin wall, light weight, high strength and incombustibility, can adjust the humidity of indoor environment and can achieve comfortable living environment.

Disclosure of Invention

The invention mainly aims to provide a processing technology of a precast glass fiber reinforced gypsum board GRG, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a processing technology of a precast glass fiber reinforced gypsum board GRG comprises the following steps:

step one, detecting GRG raw materials;

step two, molding, namely producing GRG sectional materials by adopting a mold turnover production process, wherein when the mold is manufactured, a 10mm gap filling space is reserved at a production splicing position in consideration of the size, when GRG is produced, each mold corresponds to a burdening list of a product, and the produced product is strictly subjected to burdening stirring production according to the burdening list;

step three, the production of GRG section bar, produce and make according to the pasting method basically, the production of GRG divides four layers of gypsum thick liquid three-layer glass fiber felt to brush and apply paint the construction, the surface layer + second layer gypsum + glass fiber + second layer gypsum + built-in fitting + second layer glass fiber + third layer gypsum + third layer glass fiber + fourth layer gypsum, the surface layer: after the surface gypsum slurry is coated, the surface gypsum slurry is placed for about 10 minutes, and the next procedure can be continuously carried out after the gypsum slurry is initially set; laminating: during lamination construction, each layer of gypsum slurry is ensured to permeate into the glass fiber layer, and hollowing caused by the fact that glass fibers are not soaked by the gypsum slurry is avoided;

step four, after the curing and heating period of the product, when demoulding is carried out, when the four-side flange edge mould exists, the product can be separated from the mould after the four-side flange edge mould is disassembled;

step five, within 48 hours of taking the product off the mold, placing the product on a support frame or a flat ground, and preparing a support structure;

step six: after the GRG section is produced, the GRG section is placed on an original mould for maintenance, and the control of GRG deformation can be well achieved by prolonging the demoulding time.

Step seven: and (3) transporting the GRG sectional material, wherein after the GRG sectional material is processed and shaped, the GRG sectional material is transported by generally adopting a batten as a support.

Preferably, the GRG adopts an alpha variant in hemihydrate gypsum as a basic raw material, the alpha-gypsum powder water-paste ratio is controlled to be 24:100, and when gypsum slurry is prepared, the water-paste ratio is 1: 3.1-1: 3.3, the production is carried out.

Preferably, the mold required for producing the GRG section bar comprises a wood mold, a glass fiber reinforced plastic mold, a silica gel mold, paraffin or gypsum.

Preferably, during stirring, the weighed gypsum powder is poured into the weighed water, and the mixture is stirred immediately, wherein the stirring time is not less than 30 s.

Preferably, after production, demolding is carried out after the heating period of the product, and the time is 1.5 hours.

Compared with the prior art, the invention has the following beneficial effects: the GRG material can be made into various plane boards, various functional products and various artistic models, is a current updating product popular in the building and decoration material world internationally, is especially suitable for frequent cleaning and sound transmission places due to the waterproof performance and good acoustic performance of the GRG material, and has simple processing technology and practicability.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

When the pre-cast glass fiber reinforced gypsum board GRG is processed, firstly, the GRG raw material is detected;

step two, molding, namely producing GRG sectional materials by adopting a mold turnover production process, wherein when the mold is manufactured, a 10mm gap filling space is reserved at a production splicing position in consideration of the size, when GRG is produced, each mold corresponds to a burdening list of a product, and the produced product is strictly subjected to burdening stirring production according to the burdening list;

step three, the production of GRG section bar, produce and make according to the pasting method basically, the production of GRG divides four layers of gypsum thick liquid three-layer glass fiber felt to brush and apply paint the construction, the surface layer + second layer gypsum + glass fiber + second layer gypsum + built-in fitting + second layer glass fiber + third layer gypsum + third layer glass fiber + fourth layer gypsum, the surface layer: after the surface gypsum slurry is coated, the surface gypsum slurry is placed for about 10 minutes, and the next procedure can be continuously carried out after the gypsum slurry is initially set; laminating: during lamination construction, each layer of gypsum slurry is ensured to permeate into the glass fiber layer, and hollowing caused by the fact that glass fibers are not soaked by the gypsum slurry is avoided;

step four, after the curing and heating period of the product, when demoulding is carried out, when the four-side flange edge mould exists, the product can be separated from the mould after the four-side flange edge mould is disassembled;

step five, within 48 hours of taking the product off the mold, placing the product on a support frame or a flat ground, and preparing a support structure;

step six: after the GRG section is produced, the GRG section is placed on an original mould for maintenance, and the control of GRG deformation can be well achieved by prolonging the demoulding time.

Step seven: and (3) transporting the GRG sectional material, wherein after the GRG sectional material is processed and shaped, the GRG sectional material is transported by generally adopting a batten as a support.

The GRG adopts alpha variant in hemihydrate gypsum as a basic raw material, the alpha-gypsum powder-gypsum ratio is controlled to be 24:100, and when gypsum slurry is prepared, the water-gypsum ratio is 1: 3.1-1: 3.3, the production is carried out.

The moulds required for producing GRG section bars comprise wood moulds, glass steel moulds, silica gel moulds, paraffin or gypsum. During stirring, pouring the weighed gypsum powder into the weighed water, and stirring immediately for not less than 30 s;

in the processing of the precast glass fiber reinforced gypsum board GRG, first, a raw material is detected, and the GRG uses an alpha variant in hemihydrate gypsum as a base raw material, and basically requires: the mesh number is more than 180, for products with strength requirements, the mesh number is more than 210, and aggregates are added; (containing the aggregate gypsum powder, obvious granular feeling can be caused by rubbing by hands); controlling the water-paste ratio of alpha-gypsum powder to be 24:100, and when gypsum slurry is prepared, adopting a water-paste ratio of 1: 3.1-1: 3.3, production is carried out; (when the beta gypsum powder is prepared, the water demand is very large, the water-cement ratio reaches more than 40:100, in GRG production, the expansion coefficient and strength of the beta gypsum powder do not accord with production and use, so the beta gypsum powder is strictly forbidden to use, the alpha-gypsum powder has much smaller specific surface area than the beta gypsum powder, and the water demand is correspondingly much less); after the alpha-gypsum powder is prepared into gypsum slurry according to the production proportion, when a hairbrush is used for brushing a picture on a vertical smooth surface (glass or ceramic tile), the gypsum slurry is required to uniformly adsorb a layer of slurry on the vertical surface and has fluidity; (the single-layer gypsum slurry is coated with a coating with the thickness of 1-2 mm during production);

alkali-free glass fiber mat: GRG adopts alkali-free glass fiber felt as a reinforcing material

The basic requirements are as follows: in the normal GRG production, alkali-free glass fiber felt is adopted as reinforcement, and fiber yarns or chopped yarns are not used; (the felt is stressed uniformly in longitudinal and transverse directions and is not easy to generate structural internal stress); when selecting the glass fiber felt, the type 225 is preferably selected, namely the weight of each square meter of the felt is 225g, and the selectable range is 200 g-250 g; (when the strength of the felt product is less than 200g, the GRG finished product is insufficient, and when the GRG finished product exceeds 300g, the gypsum slurry cannot penetrate through the glass fiber felt during the GRG manufacturing process, so that the product layering phenomenon is easy to form); the glass fiber felt is an alkali-free glass fiber felt product; (because the gypsum slurry presents weak acidity during preparation, the alkaline glass fiber product and the gypsum slurry have acid-base neutralization reaction, so that the brittleness and the strength of a finished product are reduced);

embedding parts: GRG adopts galvanized embedded part as structural connecting piece

The basic requirements are as follows: selecting a hot galvanizing pendant from the selection of the embedded part of the GRG; (in the aspect of corrosion resistance, the hot galvanizing pendant is dozens of times of cold galvanizing, the surface of the hot galvanizing pendant is not as smooth as that of the cold galvanizing pendant, and the adhesion of hot galvanizing is much higher than that of a cold galvanizing layer); the thickness of a zinc coating of the hot galvanizing embedded part is more than 45 microns; (the thickness of the zinc coating directly affects the corrosion resistance of the embedded part); the embedded part is processed with a connecting port before galvanization, welding is avoided as much as possible in later construction, bolt connection is adopted as much as possible, and a galvanized layer is prevented from being damaged; (in a humid environment, after the zinc coating is damaged, corrosivity is generated from the damaged part, and the durability of the decoration is influenced);

then the GRG section is produced, and firstly, the mould is made: the GRG section is produced by adopting a turnover mould production process; the basic requirements are as follows: when a mould is manufactured, a 10mm gap filling space is reserved at a production splicing position according to the size; (10 mm gap filling space needs to be reserved between the GRG product mounting blocks, and cracking phenomenon can occur in dense splicing construction); when the size of the die deforms to exceed 3mm in the production process, the die needs to be stopped and maintained; (the wooden products are used as the moulds of the bottom support, the wooden products are scrapped after 20-30 times of production, the glass fiber reinforced plastics are scrapped about 100-150 times, the silicon rubber mold is about 50-60 times, the silicon rubber mold is reduced in use, and the size is required to be paid attention to at any time; a mould: the moulds required for producing GRG section bars are usually wood moulds, glass steel moulds, silica gel moulds and paraffin/gypsum blocks/foam engraving moulds;

in the acceptance of the die, a three-dimensional scanning technology in a BIM system can be introduced to accurately control the size of the die, and the preparation method comprises the following steps: the production of the GRG section bar requires strict burdening production according to a burdening sheet;

the basic requirements are as follows: preparing materials: during GRG production, each mould corresponds to a batching sheet of a product, and the produced product is strictly subjected to batching and stirring production according to the batching sheet; (the content of the batching list comprises the information of the mould area, the number of embedded parts, the weight of single-layer gypsum, the weight of water, the area of the glass fiber felt, the number of coating layers and the like); stirring: during stirring, pouring the weighed gypsum powder into the weighed water, and stirring immediately for not less than 30 s; (in the production, production workers usually like to add water into the weighed gypsum powder, so that uneven stirring is easily caused, gypsum slurry cannot be formed at the joint of the barrel bottom and the side wall at a circle, and the phenomenon of pulverization in a section is easily caused during coating); note that: during stirring, if the slurry is stirred according to the batching list but the slurry is thin and thick and is not suitable for production, production is suspended, and factory technicians recheck the slurry batching and strictly forbid workers to increase and decrease the water amount ratio privately for stirring construction; (the structural strength of the GRG section bar is directly related to the water content, and the increase of the water content can cause the brittleness of the section bar to be increased and the strength to be reduced); production (painting): production of GRG section, basically according to the pasting method to produce;

the basic requirements are as follows: GRG is generally produced by four-layer gypsum slurry and three-layer glass fiber felt coating construction. The surface layer, the second layer of gypsum (part), the glass fiber, the second layer of gypsum (part), the embedded part (covered by the upper and lower small glass fibers), the second layer of glass fiber, the third layer of gypsum, the third layer of glass fiber and the fourth layer of gypsum surface layer (the first gypsum slurry coating layer): after the surface gypsum slurry is coated, the surface gypsum slurry is placed for about 10 minutes, and the next procedure can be continuously carried out after the gypsum slurry is initially set; (after the surface layer is coated, the glass fiber felt is spread and brushed immediately, so that the glass fiber felt is easy to penetrate out of the GRG surface, the appearance and the ash scraping work after installation are influenced, and the phenomena of product delamination and hollowing are easy to cause due to the dried surface layer); laminating (three subsequent gypsum slurry coating layers, including a glass fiber layer): during lamination construction, each layer of gypsum slurry is ensured to permeate into the glass fiber layer, and hollowing caused by the fact that glass fibers are not soaked by the gypsum slurry is avoided. (hollowing can cause the GRG section bar structure strength to reduce greatly, decorate and produce the echo noise); note that: in the production process, if the gypsum slurry becomes thick due to untimely operation and the production and the manufacture are carried out after water is strictly forbidden, the gypsum slurry must be abandoned and reconfigured. (multiple water addition and stirring can cause the gypsum slurry to be more quickly coagulated, and can cause the GRG product to be greatly deformed and the strength to be reduced); demolding: after processing and shaping of the GRG section, the GRG section needs initial setting and curing, and can be put in storage and subsequently transported; the basic requirements are as follows: after production, demolding needs to be carried out after the heating period of the product is over, and the production is normally finished for about 1.5 hours.

Then curing the GRG section, and firstly demoulding: when the product is demoulded after the curing and heating period of the product, when the four-side flange edge mould exists, the four-side flange edge mould is needed to be disassembled, and then the product can be separated from the mould; (in production, sometimes, in order to increase the speed and reduce the processes, workers detach one or two sides of the mold to forcibly pull out the product from the mold, so that the mold and the product are easy to deform, and assembly errors are caused by subsequent installation); and (3) airing: within 48 hours of taking the product off the mold, the product needs to be placed on a support frame or a flat ground, and a support structure is made. (deformation of the GRG profile, the most likely occurring time period is within 48 hours after demoulding, during which no transport work is recommended); if the construction period conditions allow, the GRG section is put on an original mould for curing after being produced, and the control of GRG deformation by prolonging the demoulding time has good effect. (GRG deformation occurs after the product loses the mould after demoulding, deformation main control time point is gypsum heating period, when the GRG section bar is heated by hand, demoulding is forbidden.)

And then, transporting the GRG section: after processing and shaping of the GRG section, transportation generally adopts a batten as a support for transportation; the basic requirements are as follows: in the transportation link, products are generally protected by the self of manufacturers, high guardrail trailers or van trucks are usually adopted for transportation, and during loading, the GRG section bars and the truck box body are generally connected into a whole by battens or battens; when the GRG section bar is transported to a construction site, a product stacking area needs to be arranged for the GRG section bar in advance, and the ground of the area needs to be smooth;

then, the site of the GRG section bar is checked and accepted: when the GRG section is transported to a construction site, coding and dimension acceptance are required according to a construction drawing and a product production segmentation drawing;

the basic requirements are as follows: checking whether a product construction drawing and a deepened segmentation drawing carried out by a manufacturer depending on the construction drawing are complete or not, checking a vehicle-mounted delivery bill, and checking the correspondence between the delivery bill and the product model number; checking the sizes of products of various types, and comparing and rechecking the sizes with the areas of the delivery lists; checking whether the obtained goods have the phenomena of damage, breakage, missing of embedded parts, surface falling, layering and the like; checking the weight difference of products of the same type and recording.

Then, the GRG section is installed, and the following key points are provided for judging the quality of the GRG product:

1. checking the size of the product (checking the positioning coordinate value of the product recorded by a three-dimensional scanner according to the typesetting numbering drawing confirmed by the item department, inputting the data into a computer to compare with a given scheme to obtain the error rate of the product, and judging whether the deformation coefficient is in a controllable range.)

2. Checking whether the thickness of the product meets the design requirement (the checking method is that the edge of the GRG plate is measured by a ruler, and the middle part of the GRG plate is locally sampled and drilled)

3. Whether rusty spots appear in the embedded parts or not is checked, if rusty spots appear in the embedded parts, the plates can be judged to be unqualified, and attention is paid to a galvanizing method for detecting the embedded parts (the embedded parts are required to be hot galvanized in principle), whether the embedded parts are loosened or not and the accurate placing size of the embedded parts.

4. And (5) checking whether the GRG plate has delaminating and breaking phenomena.

5. Checking the strength, flatness, opposite smoothness (by scratching GRG surface layer with fingernail to see if there is scratch, if there is scratch or the scratch is serious, the quality is not up to standard, after demoulding, the surface layer of pure GRG plate reaches 6 hours final setting time, the scratch is not left, the flatness and opposite smoothness can be solved by eye method.)

6. The packing and loading of the plates transported to the construction site are checked to determine whether the plates are reasonable before the plates are unloaded (the quality transportation is also a key step).

7. Inspection method and precautions of installation quality: hidden engineering: whether the welding line of the installation connecting piece meets the standard, whether the suspender is vertical, whether the connecting piece nut and the plate are screwed to the prying bolt, and whether the Wubang is in place. Surface layer: whether the size of the finished installation is consistent with the control line of the actual finished surface of the user, whether the corner closing-up is reasonable, and whether the finished installation panel is flat, smooth and smooth. In conclusion, the quality of the product of one GRG supplier needs to be comprehensively evaluated from three main aspects of drawing quality, production quality and installation quality.

And finally, acceptance and installation of the GRG section bar are carried out: the effect of GRG section bar is realized, reaches through on-the-spot installation, and on-the-spot installation mainly divide into: paying off, installing a positioning plate, primary reinforcement, calibration, locking between sectional materials, secondary reinforcement, surface decoration treatment, polishing, ash (soil) batching, filling gaps and batching, and basically requiring: paying off: before the GRG section is installed, on-site paying-off operation is required, and the difference between an on-site construction drawing and a construction drawing is checked; (when in paying off, when in ceiling construction, a horizontal 1m line is required to be confirmed, the ceiling finishes facial line confirmation, when in wall or space installation, the modeling is required to finish the facial line or the confirmation work of a reference axis, and the identification is clear in an operation field, when the size of a paying off rechecking field and the size of a construction drawing exceed 5 percent, whether the design is changed or not is required to be considered); installing a positioning plate: in the installation process of the GRG sectional material, a positioning plate needs to be installed firstly, and the selection of the positioning plate must provide a coordinate basis for the installation of adjacent plates. The positioning plate is selected, wherein in the installation process, one plate is generally selected every 30 square meters for positioning and installation, and when the shape is simple, one plate can be selected as the positioning plate for installation by 50 square meters; primary reinforcement: when the GRG sectional material is installed, except for the positioning plate, the installation of other plates is generally reinforced twice; (installation of the plate, except that the positioning plate is firmly installed in a one-time mode, other sectional materials are generally subjected to 3/4 embedded part reinforcing installation for the first time, and the section materials are adjustable, so that error adjustment caused by plate deformation in the follow-up process is facilitated); calibration: after the non-positioning plate is installed, calibration work is needed, and plate block calibration work is carried out according to the pay-off, the construction drawing and the installed positioning plate. (the implementation of the calibration work can effectively avoid the occurrence of the phenomenon of wrong installation of similar products, and has control function on the elimination of the accumulated error); locking the section bars: after the GRG section bar is installed, a knocking bolt must be locked, and a distance of 10mm is reserved between two adjacent plate blocks, (the plate is installed, except that the positioning plate is installed by adopting one-time type firm installation, other section bars are generally installed by adopting 3/4 embedded part reinforcement for the first time, and the adjustable type is adopted, so that the error adjustment caused by the plate deformation in the follow-up process is facilitated); the use interval control of knocking the bolt at adjacent panel lock is at 300mm ~ 400mm, and too much can destroy the enhancement panel bending resistance on flange limit, and too little can reduce the connection degree between adjacent panel, has the hidden danger secondary reinforcement of fracture: after adjacent panel lock solid, carry out the installation secondary reinforcement of section bar product (the secondary is consolidated the fixed point of each plate for locking the back with adjacent plate, bolt tightening treatment about generally being the built-in fitting), joint filling batches the seam: only when the board is locked firmly entirely and the secondary is consolidated, put and to carry out the batch processing of caulking, (used gypsum slurry of caulking must be the same with gypsum raw and other materials for the production, when gypsum slurry of caulking stirs, need add short glass fiber felt or glass fiber silk (1kg gypsum powder add glass fiber products 10 ~ 20g can), and must fill 30mm degree of depth more than the working face), criticize the ash: after the installation is finished, the GRG surface layer needs to be checked, and if the smoothness of the plate surface layer does not meet the requirement, the ash is required to be batched and leveled; (when the error of leveling or smoothing is over 2mm, the putty can not be used for leveling in ash batch, the raw materials for production are needed to be used for leveling the error by using emulsion paint or 801 glue, the thickness of the putty layer is not allowed to exceed 2mm in GRG surface decoration treatment, and waterproof putty for an outer wall is needed to be selected); polishing and finishing: the implementation of the GRG effect is most important in the aspect of surface decoration treatment, and the final effect of GRG installation is directly influenced by the quality of the surface decoration treatment; (in the aspect of surface decoration treatment, the bright paint treatment is not adopted as much as possible, and unless the design hardness is required, the bright paint can enable tiny flaws of engineering to be very clear and influence visual judgment, and the bright paint cannot visually show that the stratum is not smooth due to the painting thickness).

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.