CN109025296B - Integrated construction process of light plastering gypsum and facing putty - Google Patents
Integrated construction process of light plastering gypsum and facing putty Download PDFInfo
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Abstract
The invention discloses an integrated construction process of light plastering gypsum and facing putty, belonging to the technical field of building construction, aiming at solving the problems of long construction time consumption and long construction period of plastering leveling mortar and facing putty in the prior art, and the key points of the technical scheme are as follows: preparing gypsum lightweight aggregate mortar by taking gypsum, inorganic lightweight aggregate and water as raw materials; making standard ribs with the spacing less than or equal to 1.5m on the wall surface by using the gypsum lightweight aggregate mortar, and uniformly spraying the prepared gypsum lightweight aggregate mortar on the wall surface by using spraying equipment; utilizing a scraper to cling to the gauge ribs, scraping the sprayed gypsum lightweight aggregate mortar from bottom to top to level the wall surface, and manually scraping the positions of the internal corners by adopting a scraper; and (4) finishing, after the mortar base layer is hardened, uniformly spraying building glue on the wall surface, polishing by using a polishing device, and finishing by using a scraper. The construction process has the advantages of simple process, low cost, no dust emission, and smooth and crack-free wall surface after construction.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a light plastering gypsum and facing putty integrated construction process.
Background
At present, the indoor wall is generally plastered by cement mixed mortar so as to protect the wall and improve the appearance. The operation flow of the traditional wall plastering construction process is as follows: preparation before construction → base layer treatment → mortar stirring → mortar transportation → ash cake making, reinforcement making → corner protection, steel wire mesh nailing at the joint of different material walls, door and window opening construction → plastering → cleaning.
In the plastering construction process, the plastering is divided into a bottom layer and a surface layer, the bottom layer has the functions of bonding with a wall base layer and leveling, and the surface layer has the decorative function. When plastering, a surface layer can be plastered only after the bottom layer is dried (specifically, the water content cannot exceed 10%); but the mortar for plastering is prepared by adding raw materials such as sand, cement and the like into a fixed stirrer for stirring; the drying time of the mortar generally needs to wait for about 15 days in summer, so that the waiting time for drying the bottom layer is longer, and the construction progress is influenced; the waiting time is longer in winter, and the construction is not suitable.
In order to solve the above problems, the chinese patent with the publication number CN103643769B provides a wall plastering construction process, which comprises the following steps: respectively transporting the expanded perlite and the plastering gypsum powder to a plastering floor; preparing bottom layer plastering gypsum mortar; carrying out base layer treatment on the wall; making ash cakes, punching ribs and protecting corners; plastering bottom ash by using bottom plastering gypsum mortar; preparing surface layer plastering gypsum mortar, and plastering surface layer ash on the bottom layer ash by using the surface layer plastering gypsum mortar after the bottom layer ash meets the drying requirement. The wall plastering construction process utilizes plastering gypsum mortar to plaster, expanded perlite and plastering gypsum powder in the mortar generate dihydrate gypsum crystals and expanded perlite colloid of network structures when hydrated, free water in the crystal network structures is gradually absorbed by a wall body in a short time, and slurry loses fluidity and is coagulated, so that a high-strength ash layer can be quickly generated, the waiting time for drying bottom ash is shortened, and the construction progress is accelerated.
The construction method needs to be divided into a bottom layer and a surface layer for plastering construction respectively, although the prior art is improved to a certain extent, the construction of the surface layer and the construction of the bottom layer are relatively independent, only after the bottom layer plastering mortar layer is dried and meets the construction requirements, the plastering construction of the surface layer mortar can be carried out, the construction progress is slow, the construction period is long, and the further improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the light plastering gypsum and finishing putty integrated construction process which has the advantages of simple construction process, low cost, no dust emission, and flat, smooth and crack-free wall surface after construction.
In order to achieve the purpose, the invention provides the following technical scheme:
an integrated construction process of light plastering gypsum and finishing putty comprises the following steps,
p1, preparing mortar, namely preparing gypsum lightweight aggregate mortar by taking gypsum, inorganic lightweight aggregate and water as raw materials;
p2, punching ribs, namely making standard ribs on the wall surface by using the gypsum lightweight aggregate mortar in the step P1, wherein the distance between the two ribs is less than or equal to 1.5m;
p3, spraying mortar, namely uniformly spraying the gypsum lightweight aggregate mortar prepared in the step P1 on the wall surface by means of spraying equipment;
p4, leveling by a scraper, namely, utilizing the scraper to cling to the gauge bar, and leveling the sprayed gypsum lightweight aggregate mortar from bottom to top to level the wall surface; manually scraping the internal corners by a scraper;
p5, polishing, after the sprayed gypsum lightweight aggregate mortar base layer is hardened, uniformly spraying building glue on the wall surface, polishing by using a polishing device, and then scraping and leveling by using a scraper.
By adopting the technical scheme, the method at least has the following advantages: 1. a mortar layer can be formed on the wall surface by one-time spraying, so that the integration of mortar construction at the bottom layer of the wall body and putty construction at the surface layer is realized, the working procedures are simplified, the construction is convenient and efficient, the cost is low, and the labor intensity is low; 2. after the mortar is sprayed, building glue is sprayed on the wall surface, and the ground surface mortar and the glue are mixed to form slurry after polishing, so that cracks on the wall surface can be repaired, the constructed wall surface is smooth, fine and bright, and the problem that cracks are easily generated on the surface layer after the traditional gypsum mortar is constructed due to unstable performance of building gypsum is solved; 3. the inorganic lightweight aggregate is used for replacing conventional aggregate yellow sand, and the prepared mortar is light in weight and has excellent heat preservation, heat insulation, sound insulation and noise reduction effects.
Further, after the polishing device in the step P5 polishes, spraying building glue again, and then scraping and leveling by using a scraper.
By adopting the technical scheme, the building glue is sprayed again, the repairing effect on the fine cracks on the surface layer of the mortar is remarkable, and the constructed wall surface is fine, smooth and flat. Meanwhile, the light-collecting operation can make up for the defects of raw materials, the construction process can be realized by selecting conventional gypsum materials, and the adaptability of the construction process is improved.
Further, the gypsum used in the step P1 is desulfurized gypsum, natural gypsum, building gypsum or phosphogypsum.
By adopting the technical scheme, the gypsum is used as the gel material, the heat preservation and insulation effect is excellent, the final setting time is shorter than that of cement, the construction period is greatly shortened, and the construction efficiency is improved. The desulfurized gypsum, the natural gypsum, the building gypsum and the phosphogypsum have different performances, but can be used for the construction process of the invention, and the construction process of the invention has the advantage of good adaptability.
Further, the inorganic lightweight aggregate is clay ceramsite, shale ceramsite, expanded perlite, expanded vermiculite or vitrified micro-bead.
By adopting the technical scheme, various different types of inorganic lightweight aggregates can be used in the construction method, and the mortar prepared by using the inorganic lightweight aggregates to replace yellow sand as aggregates is light in weight and excellent in heat preservation and insulation effects.
Further, the inorganic lightweight aggregate used in the P1 step is prepared by the following process,
crushing vitreous ores, screening to obtain selected ore sand, performing preheating treatment to obtain preheated ore sand, and controlling the temperature of preheated sand bodies to be 200-350 ℃;
step two, carrying out high-temperature puffing processing on the ore sand treated in the step one to reduce the density of the ore sand to 80-450kg/m3Obtaining the expanded inorganic lightweight aggregate;
conveying the expanded inorganic lightweight aggregate obtained by the treatment in the step two to a settling separation device through pneumatic conveying for gas-solid separation, and uniformly spraying a water repellent to the expanded inorganic lightweight aggregate through a nozzle at an inlet of the settling separation device;
and step four, collecting the expanded inorganic lightweight aggregate separated by the settling separation equipment, namely the hydrophobic expanded inorganic lightweight aggregate for later use.
By adopting the technical scheme, the inorganic lightweight aggregate prepared by the process has light weight, excellent hydrophobicity, high flexibility and crack resistance of mortar prepared by mixing with gypsum, high bonding fastness after construction, and difficult occurrence of defects such as hollowing, cracking and the like.
Further, the air temperature at the time of pneumatic conveyance in the third step of preparing the inorganic lightweight aggregate used in the step P1 was 180-600 ℃.
By adopting the technical scheme, when the temperature is lower than 180 ℃, the dehydration reaction of the water repellent can not be fully carried out when the water repellent leaves the equipment; when the temperature is higher than 600 ℃, the hydrophobic effect of the material leaving the equipment is not changed any more, so the air temperature is preferably 180-600 ℃. Under the temperature environment, the sprayed water repellent can quickly complete dehydration reaction on the surface of inorganic lightweight aggregate particles to form water repellent elements, and long-time maintenance and aging are not needed subsequently.
Further, when the inorganic lightweight aggregate used in the step P1 is prepared by pneumatic conveying in the three steps, each cubic meter of the inorganic lightweight aggregate is conveyed to be expandedThe air flow rate of the organic lightweight aggregate is 1-300Nm3。
By adopting the technical scheme, the hot air flow is lower than 1Nm3In time, the dehydration reaction of the water repellent is not thorough; hot air flow higher than 300Nm3When the hydrophobic effect of the prepared light sand is not changed, the hot air flow for conveying every cubic meter of the expanded inorganic lightweight aggregate is 1-300Nm3Otherwise, the prepared light sand can not meet the spraying construction requirement.
Further, the water repellent used in the third step of preparing the inorganic lightweight aggregate used in the step P1 is organic silicon emulsion with the concentration of 3-5% (weight ratio) and the pH value of more than or equal to 7.
By adopting the technical scheme, the concentration of the organic silicon emulsion is too low, so that light sand with ideal hydrophobic effect is not easy to obtain; when the concentration is too high, the viscosity of the silicone emulsion increases, which is not favorable for spraying to form uniform fine droplets and is not favorable for uniformly coating the surface of the inorganic lightweight aggregate in a short time. Therefore, the concentration of the organic silicon emulsion is preferably 3% -5%, the organic silicon emulsion with the concentration is easy to spray uniformly, and light sand with uniform performance is obtained after spraying. The acidic organosilicon emulsion can corrode production equipment at high temperature, and the organosilicon emulsion with the pH value of more than or equal to 7 can protect the production equipment and prolong the service life of the production equipment.
Further, the weight ratio of the water repellent sprayed in the third step of preparing the inorganic lightweight aggregate used in the step P1 to the expanded inorganic lightweight aggregate is 1:450-1: 80.
By adopting the technical scheme, the inorganic lightweight aggregate with excellent hydrophobicity can be prepared by using the water repellent with the above dosage, the production cost is low, and the aggregation among material particles or the adhesion of the material particles on the inner wall of equipment is reduced.
Further, the nozzle used in the third step of preparing the inorganic lightweight aggregate used in the step P1 is a hydraulic direct injection nozzle, the spraying radius range is 150-250mm, and the particle size of the spraying liquid drop is 0.05-0.2 mm.
By adopting the technical scheme, the liquid drops of the water repellent sprayed by the hydraulic direct-spraying nozzle are fine and uniform, and can be uniformly coated on the surfaces of material particles, so that the water repellent performance of the finished material is uniform. Meanwhile, the fine and uniform liquid drops can reduce the aggregation among material particles or the adhesion on the inner wall of the equipment.
In conclusion, the invention has the following beneficial effects:
1. a mortar layer can be formed on the wall surface by one-time spraying, so that the integration of mortar construction at the bottom layer of the wall body and putty construction at the surface layer is realized, the working procedures are simplified, the construction is convenient and efficient, the cost is low, and the labor intensity is low;
2. after the mortar is sprayed, building glue is sprayed on the wall surface, and the ground surface mortar and the glue are mixed to form slurry after polishing, so that cracks on the wall surface can be repaired, the constructed wall surface is smooth, fine and bright, and the problem that cracks are easily generated on the surface layer after the traditional gypsum mortar is constructed due to unstable performance of building gypsum is solved;
3. the inorganic lightweight aggregate is used for replacing conventional aggregate yellow sand, and the prepared mortar is light in weight and has excellent heat preservation, heat insulation, sound insulation and noise reduction effects.
Drawings
FIG. 1 is a construction flow chart of the integrated construction process of light plastering gypsum and finishing putty in the embodiment;
FIG. 2 is a flow chart of the light collecting process in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
The construction process of the integrated construction process of light plastering gypsum and facing putty is shown in figure 1 and comprises the working procedures of mortar preparation, screeding, mortar spraying, scraper leveling and smoothing.
And (3) preparing mortar, namely weighing gypsum, inorganic lightweight aggregate and water according to the construction design proportion, and fully stirring and uniformly mixing in stirring equipment to obtain the gypsum-based lightweight aggregate mortar. In the embodiment, the gypsum is desulfurized gypsum, or other natural gypsum, phosphogypsum or building gypsum with short final setting time can be selected; the inorganic lightweight aggregate is hydrophobic expanded perlite, and other inorganic lightweight aggregates such as clay ceramsite, shale ceramsite, expanded vermiculite or vitrified microsphere can also be used.
In order to ensure the feasibility of the mechanical spraying construction of the gypsum-based lightweight aggregate mortar, the hydrophobic expanded perlite is an inorganic lightweight aggregate prepared by the following construction process:
step one, selecting perlite as a raw material, crushing and screening to obtain selected ore with the maximum grain size of less than or equal to 5 mm. Then, the selected ore is preheated, and the temperature of the preheated sand body is controlled to be 200-350 ℃.
Step two, conveying the preheated ore sand into a puffing furnace through a pipeline, and roasting at high temperature to reduce the puffing density of the ore sand to 80kg/m3Obtaining the expanded perlite. When the high-temperature roasting is carried out, the roasting temperature is controlled within 850-950 ℃.
And step three, conveying the expanded perlite obtained by the expansion processing into settling separation equipment through a conveying pipeline by virtue of pneumatic conveying. When in pneumatic transmission, the air flow for transmitting each cubic meter of expanded perlite is controlled to be 1Nm3The air temperature was 180 ℃ and the inlet flow rate was 7 m/s. The separator inlet of the sedimentation separation equipment is provided with a spraying device, and the spraying device in the embodiment adopts a hydraulic direct-spraying nozzle. The organic silicon emulsion can be conveyed to the hydraulic direct-injection nozzle through a pipeline and is sprayed out to form mist-state liquid drops so as to perform hydrophobic modification on the expanded perlite entering the settling separation equipment. The organic silicon emulsion in the embodiment is BS-5130 organic silicon emulsion produced by Wacker, the concentration of which is 3% (w/w), and organic silicon emulsion with the pH value more than or equal to 7 produced by other manufacturers can also be used. When spraying, the weight ratio of the spraying amount of the organic silicon emulsion to the expanded perlite is 1: 450. In order to ensure the spraying uniformity of the organic silicon emulsion, the spraying radius is 150-250mm, and the particle size of the spraying liquid drop is 0.05-0.2 mm. The spraying radius and the particle size of the sprayed liquid drop can be adjusted by adjusting the pressure of the hydraulic direct-spraying nozzle.
And step four, after the expanded perlite particles coated with the organic silicon emulsion enter a separator of the sedimentation separation equipment along with the conveying air, gas-solid separation is carried out. The solid expanded perlite particles fall into a finished product small bin at the bottom of the sedimentation separation equipment and are discharged through a finished product outlet. The separated dust-containing high-temperature furnace gas enters a bag-type dust remover through a flue gas conveying pipeline for purification treatment. The dust filtered by the bag-type dust remover is discharged through a dust outlet, and the filtered and purified high-temperature furnace gas is put into the atmosphere.
When the expanded perlite is subjected to gas-solid separation, the molecular functional group of the organic silicon emulsion is quickly subjected to dehydration reaction on the surface of the expanded perlite particles to form organic silicon hydrophobic elements, so that the expanded perlite is endowed with excellent hydrophobic property. Because the air temperature in the sedimentation separation equipment is high, the dehydration reaction of the organic silicon emulsion is almost instantly finished, and the expanded perlite separated from the sedimentation separation equipment is hydrophobic expanded perlite, so that the inorganic lightweight aggregate can be used in the construction method of the invention without additional long-time maintenance and aging.
And (3) punching ribs, namely making longitudinal standard ribs on the wall surface to be constructed by utilizing the prepared gypsum-based lightweight aggregate mortar, wherein the distance between every two adjacent standard ribs is preferably less than or equal to 1.5 m. In the embodiment, the space between the marking ribs is 1.2m, and the width of the ribs is 30-50 mm. And after the marked ribs are dried and solidified, spraying mortar.
And (3) spraying mortar, namely directly pumping the prepared gypsum-based lightweight aggregate mortar to spraying equipment by using a pipeline, and uniformly spraying the mortar on the wall surface by using the spraying equipment. When spraying, the standard rib is used as a boundary, and the spraying thickness is consistent with or slightly thicker than the thickness of the standard rib. And scraping and leveling by using a scraper after spraying.
And leveling by using a scraper, namely leveling the sprayed mortar by using a scraper with the length larger than the distance between two adjacent marked ribs. When in scraping, two ends of the scraping plate are tightly abutted to the marking ribs, the scraping plate is moved from bottom to top, mortar in the area between the two marking ribs is scraped, and no obvious crack or pit is formed on the surface of the mortar. The operable time of the gypsum mortar after being applied to the wall is usually shorter than 60min, so that the mortar needs to be leveled by a scraper as soon as possible after being sprayed, and areas separated by the marking ribs are sprayed one by one during spraying, and the next area is sprayed after the leveling by the scraper.
And (3) light collection, wherein a light collection process is required to repair tiny pits and cracks on the wall surface after the gypsum-based lightweight aggregate mortar is dried, and the construction flow of the light collection process is shown in figure 2. And after the base layer of the sprayed gypsum-based lightweight aggregate mortar is dried and solidified, uniformly spraying building glue on the surface of the mortar layer. After spraying the building glue, polishing the surface of the mortar layer by using an electric polisher to form a layer of slurry-like mortar-building glue mixture. If necessary, spraying a small amount of glue for wetting, and then scraping the mortar-building glue mixture by using a scraper from bottom to top to ensure that the surface of the mortar layer is smooth, fine and flat. And drying to obtain the smooth, flat and fine wall surface. This kind of receipts light in-process can not be to the wall water spray, otherwise the mortar powder that polishes the production drops easily, can't reach the purpose of repairing the slight pit and the crack on mortar layer surface.
The construction process can form a mortar layer on the wall surface by one-time spraying, realizes the integration of mortar construction at the bottom layer of the wall body and putty construction at the surface layer, simplifies the working procedures, and has convenient and efficient construction, low cost and low labor intensity; the constructed wall surface is smooth, fine and bright, and the problem that cracks are easily generated on the surface layer after the traditional gypsum-based putty is constructed is solved; the wall surface constructed by the construction process has excellent heat preservation, heat insulation, sound insulation and noise reduction effects.
Example 2:
the construction process of integrating light plastering gypsum and finishing putty is basically the same as that of the embodiment 1, and the difference between the embodiment and the embodiment 1 is as follows: the density of the expanded perlite after high-temperature expansion is 150kg/m3(ii) a When the air is conveyed by air, the air flow for conveying each cubic meter of expanded perlite is 100Nm3The air temperature is 300 ℃; the concentration of the organic silicon emulsion used for spraying is 3 percent (w/w), and the weight ratio of the spraying amount of the organic silicon emulsion to the expanded perlite is 1: 300.
Example 3:
the construction process of integrating light plastering gypsum and finishing putty is basically the same as that of the embodiment 1, and the difference between the embodiment and the embodiment 1 is as follows: the density of the expanded perlite after high-temperature expansion is 250kg/m3(ii) a When in pneumatic transmission, the air flow for transmitting each cubic meter of expanded perlite is 200Nm3The air temperature is 400 ℃; the concentration of the organic silicon emulsion used for spraying is 4 percent (w/w), and the spraying amount of the organic silicon emulsion is equal to the weight of the expanded perliteThe quantity ratio is 1: 200.
Example 4
The construction process of integrating light plastering gypsum and finishing putty is basically the same as that of the embodiment 1, and the difference between the embodiment and the embodiment 1 is as follows: the density of the expanded perlite after high-temperature expansion is 350kg/m3(ii) a When in pneumatic transmission, the air flow for transmitting each cubic meter of expanded perlite is 250Nm3The air temperature is 500 ℃; the concentration of the organic silicon emulsion used for spraying is 5 percent (w/w), and the weight ratio of the spraying amount of the organic silicon emulsion to the expanded perlite is 1: 100.
Example 5:
the construction process of integrating light plastering gypsum and finishing putty is basically the same as that of the embodiment 1, and the difference between the embodiment and the embodiment 1 is as follows: the density of the expanded perlite after high-temperature expansion is 450kg/m3(ii) a When in pneumatic transmission, the air flow for transmitting each cubic meter of expanded perlite is 300Nm3The air temperature is 600 ℃; the concentration of the organic silicon emulsion used for spraying is 5 percent (w/w), and the weight ratio of the spraying amount of the organic silicon emulsion to the expanded perlite is 1: 80.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading this specification, but only fall within the scope of the claims of the present invention.
Claims (7)
1. A light plastering gypsum and finishing putty integrated construction process is characterized in that: comprises the following steps of (a) carrying out,
p1, preparing mortar, namely preparing gypsum lightweight aggregate mortar by taking gypsum, inorganic lightweight aggregate and water as raw materials;
p2, punching ribs, namely making standard ribs on the wall surface to be constructed by utilizing the gypsum lightweight aggregate mortar in the step P1, wherein the distance between the two ribs is less than or equal to 1.5m;
p3, spraying mortar, namely uniformly spraying the gypsum lightweight aggregate mortar prepared in the step P1 on the wall surface by means of spraying equipment;
p4, leveling by a scraper, namely, utilizing the scraper to cling to the gauge bar, and leveling the sprayed gypsum lightweight aggregate mortar from bottom to top to level the wall surface; manually scraping the internal corners by a scraper;
p5, smoothing, after the sprayed gypsum lightweight aggregate mortar base layer is hardened, uniformly spraying building glue on the wall surface, polishing by using a polishing device, and smoothing by using a scraper; after the polishing device in the step P5 is used for polishing, spraying building glue again, and then scraping and leveling by using a scraper;
the inorganic lightweight aggregate used in the P1 step is prepared by the following process,
crushing vitreous ores, screening to obtain selected ore sand, performing preheating treatment to obtain preheated ore sand, and controlling the temperature of preheated sand bodies to be 200-350 ℃;
step two, carrying out high-temperature puffing processing on the ore sand treated in the step one to reduce the density of the ore sand to 80-450kg/m3Obtaining the expanded inorganic lightweight aggregate;
conveying the expanded inorganic lightweight aggregate obtained by the treatment in the step two to a settling separation device through pneumatic conveying for gas-solid separation, and uniformly spraying a water repellent to the expanded inorganic lightweight aggregate through a nozzle at an inlet of the settling separation device;
and step four, collecting the expanded inorganic lightweight aggregate separated by the settling separation equipment, namely the hydrophobic expanded inorganic lightweight aggregate.
2. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 1, wherein the integrated construction process comprises the following steps: the gypsum used in the step P1 is one of desulfurized gypsum, natural gypsum, building gypsum or phosphogypsum.
3. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 1, wherein the integrated construction process comprises the following steps: the inorganic lightweight aggregate is one of clay ceramsite, shale ceramsite, expanded perlite, expanded vermiculite or vitrified micro-beads.
4. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 3, wherein the construction process comprises the following steps: the air temperature in the pneumatic conveying in the third step of preparing the inorganic lightweight aggregate used in the step P1 is 180-600 ℃.
5. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 3, wherein the construction process comprises the following steps: the water repellent used in the third step of preparing the inorganic lightweight aggregate used in the step P1 is organic silicon emulsion with the concentration of 3-5 percent (weight ratio) and the pH value of more than or equal to 7.
6. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 3, wherein the construction process comprises the following steps: the weight ratio of the water repellent sprayed in the third step of preparing the inorganic lightweight aggregate used in the step P1 to the expanded inorganic lightweight aggregate is 1:450-1: 80.
7. The integrated construction process of light plastering gypsum and finishing putty as claimed in claim 6, wherein: the nozzle used in the third step of preparing the inorganic lightweight aggregate used in the step P1 is a hydraulic direct injection nozzle, the spraying radius range is 150-250mm, and the particle size of the spraying liquid drop is 0.05-0.2 mm.
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| CN110905143A (en) * | 2019-12-04 | 2020-03-24 | 成都建工第一建筑工程有限公司 | Mechanical spraying construction process for light plastering gypsum |
| CN110952735A (en) * | 2019-12-23 | 2020-04-03 | 苏州海戈斯环保科技有限公司 | Efficient and convenient wall surface leveling construction process |
| CN114908967A (en) * | 2021-02-08 | 2022-08-16 | 振中建设集团有限公司 | One-step forming construction method and equipment for spraying mortar and plastering indoor wall surface by machine |
| CN114853437A (en) * | 2022-05-23 | 2022-08-05 | 云南特雅建材科技有限公司 | Phosphogypsum-based light plastering gypsum for hollow internal mold metal net wall |
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| CN108083740A (en) * | 2018-01-30 | 2018-05-29 | 富思特新材料科技发展股份有限公司 | Mortar and the two-in-one compound material of putty and preparation method thereof |
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