Production and construction process of machine-sprayed mortar

Abstract

The invention relates to the technical field of machine-sprayed mortar, in particular to a production and construction process of machine-sprayed mortar, which remarkably improves the structural performance and construction efficiency of mortar by adopting a brand new production and manufacturing process and a mechanical construction process. According to the technology, the coal ash, the kaolin, the inorganic expanding agent, the binder and other components are added into a traditional mortar formula, the compressive strength, the cohesiveness and the crack resistance of the mortar are improved due to the addition of the new materials, the durability of the mortar in the using process is enhanced, and the mortar particularly has remarkable advantages in the aspects of freezing resistance and seepage resistance; the problems of cracking and falling caused by improper construction can be effectively reduced by using the inorganic expanding agent and the binder, so that the quality and the stability of wall surface construction are improved, in addition, the production cost of the mortar is reduced by reasonably proportioning the materials, and the process has higher market competitiveness.

Description

Technical Field

[0001] The invention relates to the technical field of machine-blasted mortar, and in particular to a production and construction process of machine-blasted mortar. Background Art

[0002] With the continuous advancement of urbanization, the demands of the construction industry are increasing, especially in the field of wall construction. Although traditional mortar leveling and plastering construction methods have played an important role in the past, with the expansion of building scale and the complexity of construction needs, traditional manual construction methods have gradually exposed many problems. Especially in today's society with an increasingly aging population, many mortar construction workers are older and their physical strength is gradually declining. Traditional mortar plastering construction is extremely physically and technically demanding. Workers need to bend over and work for long periods of time, and the technical requirements are high. Especially when working on large areas, improper operation often leads to construction quality problems such as uneven mortar, hollowing, cracking, and other defects, affecting the wall flatness and decorative effect.

[0003] Furthermore, traditional manual construction is inefficient, especially in large-scale projects, with high labor costs and long construction cycles, failing to meet the market's dual demands for rapid construction and high quality. To overcome these challenges, machine-sprayed mortar technology emerged. Through mechanized operation, machine-sprayed mortar significantly improves construction efficiency and reduces labor intensity. It also maintains uniformity and stability of the mortar coating over a wider range, significantly reducing quality defects such as hollowing and cracking that are common in traditional mortar construction. Mechanized spraying precisely controls the thickness and fluidity of the mortar, ensuring uniform distribution, reducing operator error, and ensuring wall flatness and adhesion.

[0004] Against this backdrop, with the increasing demands for construction efficiency and quality, the use of machine-blasted mortar has become an inevitable trend. This process not only increases construction speed and reduces labor intensity, but also ensures mortar application quality, enhancing the overall effectiveness of the construction project. Therefore, a specialized machine-blasted mortar and its application technology have been developed to further optimize and improve the mortar application process and meet the modern construction industry's demands for construction efficiency, quality, and cost control.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a production and construction process of machine-blasted mortar to solve the above technical problems. Summary of the Invention

[0006] The technical purpose to be achieved by the present invention is to design a production and construction process for machine-blasted mortar, adopting a brand-new production process and mechanical construction process: on the basis of the traditional production process, the use of fly ash, kaolin, inorganic expansion agent and binder is added to improve the structural performance and construction performance of the mortar.

[0007] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0008] A production and construction process for machine-blasted mortar, the process steps are as follows:

[0009] S1: Prepare raw materials according to the preset proportions, mix the various raw materials evenly using a forced mixer, package the mortar mixture or ship it in bulk, and add the mortar mixture to the mortar machine spraying equipment;

[0010] S2: Add enough clean water to the machine spraying equipment, start the air compressor and the spraying machine, and after the water is sprayed clean, add the mixed machine spraying mortar to ensure that there are no impurities inside the equipment and it can run smoothly to reduce the occurrence of equipment failure;

[0011] S3: Glue reinforcement strips to the wall in advance. The flatness of the reinforcement strips should be controlled within 2mm to ensure that the reinforcement strips are firmly attached to the wall and accurately positioned so as not to affect subsequent construction. After the reinforcement strips are firmly fixed, the machine operator sprays mortar evenly on the wall from left to right. The mortar surface exceeds the height of the reinforcement strips by about 2mm. Ensure that each layer of mortar covers the reinforcement strips and is of appropriate thickness to avoid local unevenness or excessive thickness.

[0012] S4: After spraying, immediately use a thin scraper to scrape the wall surface, filling in the concave areas while scraping to ensure that the wall surface is flat in one go, reducing subsequent repair work and ensuring that the wall surface is flat and has no obvious joints; the wall surface after scraping is cured with water after the initial hardening, and the curing time is not less than 3 days to ensure that the mortar is fully hydrated, enhance the strength and durability of the mortar, and prevent cracks or loosening on the surface;

[0013] S5: After the construction is completed, the spraying machine, hose, mixer and other equipment must be cleaned in time to ensure that there is no mortar residue in the equipment, reduce equipment wear and extend the service life; ensure that the spraying operation is carried out continuously. If the downtime exceeds 1.5 hours, the spraying machine and hose should be cleaned immediately to avoid the mortar drying in the equipment and affecting the subsequent construction quality.

[0014] The P.042.5 cement, sand, fly ash, and other additives in this mortar mix are carefully blended in specific proportions to ensure the mortar's adaptability and performance in various construction environments. As the primary binder, P.042.5 cement provides sufficient strength and durability, making it suitable for the construction of most building structures. Sand, as an aggregate, reinforces the mortar structure, while fly ash effectively improves the mortar's impermeability and crack resistance, reducing overall costs and being environmentally friendly. Wood fiber and PP fiber enhance the mortar's tensile strength and toughness, reducing cracks and ensuring the overall stability of the wall structure. The water reducer (polycarboxylic acid) improves the mortar's fluidity, reduces water consumption, and thus increases its density. Hydroxypropyl cellulose enhances the mortar's adhesion, prevents it from falling off, and is not easily dissolved. The air-entraining agent introduces bubbles to enhance frost resistance, while latex powder increases the mortar's flexibility, improving its crack resistance and durability. Such a scientific ratio not only improves the overall performance of the mortar, but also ensures the ease of operation and long-term stability of the mortar during construction.

[0015] The sand needs to be screened through a 2.0mm sieve, and the water reducer is set to polycarboxylic acid. The sand is screened to 2.0mm in order to remove larger particles and impurities therein and ensure that the sand particles are uniform and clean. Excessively large particles not only affect the construction performance of the mortar, but may also cause uneven mortar strength, thereby affecting the flatness and quality of the wall. By strictly screening the sand, it can be ensured that the aggregate of the mortar is uniform and compact, avoiding the generation of gaps or uneven mortar layers during construction. As a water reducer, polycarboxylic acid has a strong water-reducing effect and fluidity-improving effect. Its addition can reduce the water content in cement, thereby reducing the ratio of cement to water, improving the density and strength of the mortar, and at the same time ensuring the fluidity of the mortar, reducing problems such as hollowing and cracks during construction, and improving construction quality and efficiency.

[0016] The fluidity of the mechanically stirred mortar is strictly controlled between 90-100mm. This fluidity range can ensure that the mortar has appropriate fluidity and adhesion during the spraying process, thereby improving construction efficiency and reducing the risk of defects such as unevenness or hollowing after construction. It is crucial to control the fluidity of the mortar between 90-100mm. Excessive fluidity will cause the mortar to be too thin, making it difficult to control the thickness, and may cause uneven mortar flow during the spraying process; too low fluidity will cause the mortar to be too viscous, affecting construction efficiency and increasing construction difficulty. By precisely controlling the fluidity, not only can the construction efficiency of the mortar be improved, but it can also ensure that the mortar is evenly distributed during the spraying process, avoiding construction defects such as hollowing, cracks or unevenness. In addition, appropriate fluidity helps the mortar to adhere well to the wall surface, improves the overall strength and stability of the mortar, and ensures the quality of the wall surface.

[0017] The scraping angle of the thinning scraper is controlled between 15° and 30° to ensure uniform pressure during the scraping process, thereby filling recessed areas on the mortar surface and avoiding over-scraping that can cause the mortar to be too thin. The purpose of controlling the scraping angle between 15° and 30° is to ensure even pressure distribution during the scraping process, allowing the mortar to be evenly applied to the wall surface. This is particularly important when filling recessed areas, helping to prevent the mortar from being too thin or uneven. An overly sharp scraping angle can result in locally thin mortar or uneven coating, while an overly gentle scraping angle may not effectively fill recessed areas, affecting the final wall smoothness. Therefore, a reasonable scraping angle can help improve wall construction quality, reduce subsequent repair work, and enhance construction efficiency and aesthetics.

[0018] During water curing, the water temperature and humidity should be maintained within a certain range, typically between 15°C and 25°C, and the humidity maintained above 70%, to ensure full hydration and enhanced strength of the mortar. Water curing of mortar is crucial for its strength and durability. Maintaining the water temperature between 15°C and 25°C during water curing promotes full hydration of the cement in the mortar, accelerating its hardening and increasing its compressive strength. If the water temperature is too low, the cement hydration reaction may slow, potentially leading to incomplete hardening and reduced strength. Excessive water temperature can cause over-hydration, resulting in cracks or uneven curing. Maintaining a humidity level above 70% helps maintain the mortar surface moist, preventing premature drying and cracking. This ensures optimal strength and durability during curing and avoids quality issues caused by insufficient curing.

[0019] The starting sequence for the shotcrete machine and air compressor is as follows: start the air compressor first, then start the shotcrete machine after the air compressor is running steadily. This ensures proper operation of the shotcrete machine and avoids equipment damage or uneven spraying caused by improper starting. Operating the shotcrete machine and air compressor in the correct starting sequence is key to efficient equipment operation. Starting the air compressor first and ensuring stable operation provides sufficient and stable air pressure support for the shotcrete machine. Starting the shotcrete machine before the air compressor is stable can lead to unstable air pressure, which can affect the spraying effect of the shotcrete machine, causing uneven spraying or equipment damage. This sequential operation maximizes the service life of the equipment, ensures uniform mortar spraying during construction, and improves construction quality and efficiency.

[0020] During construction, equipment cleaning fluids used should be non-toxic and environmentally friendly. Avoid using corrosive chemical cleaning agents, as these can damage equipment and pollute the construction environment. Using non-toxic, environmentally friendly cleaning fluids to clean construction equipment helps ensure a safe and healthy construction environment while minimizing damage to the equipment. Traditional corrosive chemical cleaning agents can accelerate equipment wear, shorten its lifespan, and pose health risks to construction workers. Environmentally friendly cleaning fluids, on the other hand, effectively remove mortar residue from equipment while being non-corrosive, reducing equipment maintenance costs, ensuring a construction environment that meets environmental standards, and minimizing pollution.

[0021] The mortar mix used for wall spraying consists of high-quality cement, fine sand, and additives to ensure the mortar's strength, adhesion, and crack resistance, while also ensuring that the surface is resistant to bubbling and flaking after application. Using high-quality cement, fine sand, and additives as the primary raw materials for the mortar ensures high strength, excellent adhesion, and crack resistance. High-quality cement provides the necessary compressive strength, while fine sand ensures uniformity and stability. Additives enhance the mortar's durability and frost resistance, strengthen its adhesion, and prevent bubbling and flaking. This mix ensures the long-term stability and aesthetics of the mortar after application, reducing the need for subsequent repairs and patching.

[0022] After construction, if any unevenness or depressions are found on the wall, workers should promptly repair them during the initial hardening phase to ensure a flawless surface and achieve a high-quality finish. Prompt repair is essential for maintaining quality. The initial hardening phase, when the mortar has not yet fully cured, makes it easier to work with. Prompt repairs can effectively fill surface defects and avoid the difficulties of repairing later, after the mortar has fully hardened. This early repair not only improves construction efficiency but also ensures a smooth, even wall surface, achieving the desired finish and aesthetics.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The present invention significantly improves the structural performance and construction efficiency of mortar by adopting a brand-new production process and mechanical construction process. In terms of production process, this technology adds fly ash, kaolin, inorganic expansion agent and binder to the traditional mortar formula. The addition of these new materials improves the compressive strength, adhesion and crack resistance of the mortar, enhances the durability of the mortar during use, and has significant advantages in frost resistance and impermeability. At the same time, the use of inorganic expansion agents and binders can also effectively reduce the problems of cracks and falling off caused by improper construction, thereby improving the quality and stability of wall construction. In addition, the reasonable ratio of these materials reduces the production cost of mortar, making the process more competitive in the market.

[0025] (2) In terms of construction technology, the present invention changes the traditional manual smoothing process and adopts a combination of mechanical stirring and mechanical spraying, which greatly improves the construction efficiency. Mechanical spraying can provide a stronger impact force, enhance the bonding force between the mortar and the wall surface, and reduce the common hollowing problem in traditional construction. In addition, the construction method of rib positioning and thin ruler scraping simplifies the traditional smoothing steps, avoids tedious operations and uneven coating during construction, and ensures the consistency and quality of the construction effect. The high impact force of mechanical spraying also improves the density of the mortar, increases the strength of the mortar, makes the wall surface more solid and smooth, thereby effectively reducing the later maintenance costs and improving the quality and efficiency of the overall construction. This new construction process not only reduces the intensity of manual labor, but also greatly shortens the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, a production and construction process of machine-blasted mortar, the steps of the process are as follows:

[0031] S1: Prepare raw materials according to the preset proportions, mix the various raw materials evenly using a forced mixer, package the mortar mixture or ship it in bulk, and add the mortar mixture to the mortar machine spraying equipment;

[0032] S2: Add enough clean water to the machine spraying equipment, start the air compressor and the spraying machine, and after the water is sprayed clean, add the mixed machine spraying mortar to ensure that there are no impurities inside the equipment and it can run smoothly to reduce the occurrence of equipment failure;

[0033] S3: Glue reinforcement strips to the wall in advance. The flatness of the reinforcement strips should be controlled within 2mm to ensure that the reinforcement strips are firmly attached to the wall and accurately positioned so as not to affect subsequent construction. After the reinforcement strips are firmly fixed, the machine operator sprays mortar evenly on the wall from left to right. The mortar surface exceeds the height of the reinforcement strips by about 2mm. Ensure that each layer of mortar covers the reinforcement strips and is of appropriate thickness to avoid local unevenness or excessive thickness.

[0034] S4: After spraying, immediately use a thin scraper to scrape the wall surface, filling in the concave areas while scraping to ensure that the wall surface is flat in one go, reducing subsequent repair work and ensuring that the wall surface is flat and has no obvious joints; the wall surface after scraping is cured with water after the initial hardening, and the curing time is not less than 3 days to ensure that the mortar is fully hydrated, enhance the strength and durability of the mortar, and prevent cracks or loosening on the surface;

[0035] S5: After the construction is completed, the spraying machine, hose, mixer and other equipment must be cleaned in time to ensure that there is no mortar residue in the equipment, reduce equipment wear and extend the service life; ensure that the spraying operation is carried out continuously. If the downtime exceeds 1.5 hours, the spraying machine and hose should be cleaned immediately to avoid the mortar drying in the equipment and affecting the subsequent construction quality.

[0036] The P.042.5 cement, sand, fly ash, and other additives in this mortar mix are carefully blended in specific proportions to ensure the mortar's adaptability and performance in various construction environments. As the primary binder, P.042.5 cement provides sufficient strength and durability, making it suitable for the construction of most building structures. Sand, as an aggregate, reinforces the mortar structure, while fly ash effectively improves the mortar's impermeability and crack resistance, reducing overall costs and being environmentally friendly. Wood fiber and PP fiber enhance the mortar's tensile strength and toughness, reducing cracks and ensuring the overall stability of the wall structure. The water reducer (polycarboxylic acid) improves the mortar's fluidity, reduces water consumption, and thus increases its density. Hydroxypropyl cellulose enhances the mortar's adhesion, prevents it from falling off, and is not easily dissolved. The air-entraining agent introduces bubbles to enhance frost resistance, while latex powder increases the mortar's flexibility, improving its crack resistance and durability. Such a scientific ratio not only improves the overall performance of the mortar, but also ensures the ease of operation and long-term stability of the mortar during construction.

[0037] The sand needs to be screened through a 2.0mm sieve, and the water reducer is set to polycarboxylic acid. The sand is screened to 2.0mm in order to remove larger particles and impurities therein and ensure that the sand particles are uniform and clean. Excessively large particles not only affect the construction performance of the mortar, but may also cause uneven mortar strength, thereby affecting the flatness and quality of the wall. By strictly screening the sand, it can be ensured that the aggregate of the mortar is uniform and compact, avoiding the generation of gaps or uneven mortar layers during construction. As a water reducer, polycarboxylic acid has a strong water-reducing effect and fluidity-improving effect. Its addition can reduce the water content in cement, thereby reducing the ratio of cement to water, improving the density and strength of the mortar, and at the same time ensuring the fluidity of the mortar, reducing problems such as hollowing and cracks during construction, and improving construction quality and efficiency.

[0038] The fluidity of the mechanically stirred mortar is strictly controlled between 90-100mm. This fluidity range can ensure that the mortar has appropriate fluidity and adhesion during the spraying process, thereby improving construction efficiency and reducing the risk of defects such as unevenness or hollowing after construction. It is crucial to control the fluidity of the mortar between 90-100mm. Excessive fluidity will cause the mortar to be too thin, making it difficult to control the thickness, and may cause uneven mortar flow during the spraying process; too low fluidity will cause the mortar to be too viscous, affecting construction efficiency and increasing construction difficulty. By precisely controlling the fluidity, not only can the construction efficiency of the mortar be improved, but it can also ensure that the mortar is evenly distributed during the spraying process, avoiding construction defects such as hollowing, cracks or unevenness. In addition, appropriate fluidity helps the mortar to adhere well to the wall surface, improves the overall strength and stability of the mortar, and ensures the quality of the wall surface.

[0039] The scraping angle of the thinning scraper is controlled between 15° and 30° to ensure uniform pressure during the scraping process, thereby filling recessed areas on the mortar surface and avoiding over-scraping that can cause the mortar to be too thin. The purpose of controlling the scraping angle between 15° and 30° is to ensure even pressure distribution during the scraping process, allowing the mortar to be evenly applied to the wall surface. This is particularly important when filling recessed areas, helping to prevent the mortar from being too thin or uneven. An overly sharp scraping angle can result in locally thin mortar or uneven coating, while an overly gentle scraping angle may not effectively fill recessed areas, affecting the final wall smoothness. Therefore, a reasonable scraping angle can help improve wall construction quality, reduce subsequent repair work, and enhance construction efficiency and aesthetics.

[0040] During water curing, the water temperature and humidity should be maintained within a certain range, typically between 15°C and 25°C, and the humidity maintained above 70%, to ensure full hydration and enhanced strength of the mortar. Water curing of mortar is crucial for its strength and durability. Maintaining the water temperature between 15°C and 25°C during water curing promotes full hydration of the cement in the mortar, accelerating its hardening and increasing its compressive strength. If the water temperature is too low, the cement hydration reaction may slow, potentially leading to incomplete hardening and reduced strength. Excessive water temperature can cause over-hydration, resulting in cracks or uneven curing. Maintaining a humidity level above 70% helps maintain the mortar surface moist, preventing premature drying and cracking. This ensures optimal strength and durability during curing and avoids quality issues caused by insufficient curing.

[0041] The starting sequence for the shotcrete machine and air compressor is as follows: start the air compressor first, then start the shotcrete machine after the air compressor is running steadily. This ensures proper operation of the shotcrete machine and avoids equipment damage or uneven spraying caused by improper starting. Operating the shotcrete machine and air compressor in the correct starting sequence is key to efficient equipment operation. Starting the air compressor first and ensuring stable operation provides sufficient and stable air pressure support for the shotcrete machine. Starting the shotcrete machine before the air compressor is stable can lead to unstable air pressure, which can affect the spraying effect of the shotcrete machine, causing uneven spraying or equipment damage. This sequential operation maximizes the service life of the equipment, ensures uniform mortar spraying during construction, and improves construction quality and efficiency.

[0042] During construction, equipment cleaning fluids used should be non-toxic and environmentally friendly. Avoid using corrosive chemical cleaning agents, as these can damage equipment and pollute the construction environment. Using non-toxic, environmentally friendly cleaning fluids to clean construction equipment helps ensure a safe and healthy construction environment while minimizing damage to the equipment. Traditional corrosive chemical cleaning agents can accelerate equipment wear, shorten its lifespan, and pose health risks to construction workers. Environmentally friendly cleaning fluids, on the other hand, effectively remove mortar residue from equipment while being non-corrosive, reducing equipment maintenance costs, ensuring a construction environment that meets environmental standards, and minimizing pollution.

[0043] The mortar mix used for wall spraying consists of high-quality cement, fine sand, and additives to ensure the mortar's strength, adhesion, and crack resistance, while also ensuring that the surface is resistant to bubbling and flaking after application. Using high-quality cement, fine sand, and additives as the primary raw materials for the mortar ensures high strength, excellent adhesion, and crack resistance. High-quality cement provides the necessary compressive strength, while fine sand ensures uniformity and stability. Additives enhance the mortar's durability and frost resistance, strengthen its adhesion, and prevent bubbling and flaking. This mix ensures the long-term stability and aesthetics of the mortar after application, reducing the need for subsequent repairs and patching.

[0044] After construction, if any unevenness or depressions are found on the wall, workers should promptly repair them during the initial hardening phase to ensure a flawless surface and achieve a high-quality finish. Prompt repair is essential for maintaining quality. The initial hardening phase, when the mortar has not yet fully cured, makes it easier to work with. Prompt repairs can effectively fill surface defects and avoid the difficulties of repairing later, after the mortar has fully hardened. This early repair not only improves construction efficiency but also ensures a smooth, even wall surface, achieving the desired finish and aesthetics.

[0045] During operation, the machine-sprayed mortar production process includes a series of precise steps to ensure construction quality and efficiency. First, various raw materials are prepared according to preset proportions and evenly mixed using a forced mixer to form a mortar mixture. The mixture is then packaged or shipped in bulk and added to the spraying machine. Next, sufficient clean water is added to the machine-sprayed equipment, and the air compressor and sprayer are started. Once the water in the equipment is clear, the mixed mortar is added to ensure that the equipment is free of impurities and can operate smoothly.

[0046] Before construction, reinforcement strips are first affixed to the wall, ensuring a flatness of no more than 2mm to ensure secure attachment and precise positioning. Once the reinforcement strips are secured, the operator sprays the mortar evenly onto the wall from left to right, ensuring each layer is of appropriate thickness, covering the reinforcement by approximately 2mm. This ensures a uniform coating without excessive thickness or unevenness. After spraying, a thin scraper is immediately used to apply the coating, filling in any indentations as the wall is scraped. This ensures a smooth, one-time finish and reduces subsequent repair work. After the initial hardening, the smoothed wall is water-cured to ensure full hydration of the mortar, enhance its strength, and prevent cracking or loosening. Curing should last no less than three days.

[0047] Finally, all equipment, such as the sprayer, hoses, and mixer, must be cleaned promptly after construction is completed to prevent mortar residue from causing equipment failure or wear. If construction is suspended for more than 1.5 hours, the equipment must be cleaned immediately to prevent mortar from drying inside the equipment and ensure smooth subsequent construction. These steps ensure efficient mortar spraying and consistent wall quality.

[0048] Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the widest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined in the appended claims.

Claims

1. A production and construction process for machine-blasted mortar, characterized in that: The steps of the process are as follows: S1: Prepare raw materials according to the preset proportions, mix the various raw materials evenly using a forced mixer, package the mortar mixture or ship it in bulk, and add the mortar mixture to the mortar machine spraying equipment; S2: Add enough clean water to the machine spraying equipment, start the air compressor and the spraying machine, and after the water is sprayed clean, add the mixed machine spraying mortar to ensure that there are no impurities inside the equipment and it can run smoothly to reduce the occurrence of equipment failure; S3: Glue reinforcement strips to the wall in advance. The flatness of the reinforcement strips should be controlled within 2mm to ensure that the reinforcement strips are firmly attached to the wall and accurately positioned so as not to affect subsequent construction. After the reinforcement strips are firmly fixed, the machine operator sprays mortar evenly on the wall from left to right. The mortar surface exceeds the height of the reinforcement strips by about 2mm. Ensure that each layer of mortar covers the reinforcement strips and is of appropriate thickness to avoid local unevenness or excessive thickness. S4: After spraying, immediately use a thin scraper to scrape the wall surface, filling in the concave areas while scraping to ensure that the wall surface is flat in one go, reducing subsequent repair work and ensuring that the wall surface is flat and has no obvious joints; the wall surface after scraping is cured with water after the initial hardening, and the curing time is not less than 3 days to ensure that the mortar is fully hydrated, enhance the strength and durability of the mortar, and prevent cracks or loosening on the surface; S5: After the construction is completed, the spraying machine, hose, mixer and other equipment must be cleaned in time to ensure that there is no mortar residue in the equipment, reduce equipment wear and extend the service life; ensure that the spraying operation is carried out continuously. If the downtime exceeds 1.5 hours, the spraying machine and hose should be cleaned immediately to avoid the mortar drying in the equipment and affecting the subsequent construction quality.

2. The production and construction process of a machine-blasted sand mortar according to claim 1, characterized in that: The raw materials and their proportions are: 15,000 parts of P.042.5 cement, 75,000 parts of sand, 10,000 parts of fly ash, 100 parts of wood fiber, 50 parts of PP fiber, 30 parts of water reducer, 20 parts of hydroxypropyl cellulose, 2 parts of air entraining agent and 200 parts of latex powder.

3. The production and construction process of a machine-blasted mortar according to claim 2, characterized in that: The sand needs to be screened through a 2.0 mm sieve, and the water reducing agent is set to polycarboxylic acid.

4. The production and construction process of a machine-blasted sand mortar according to claim 1, characterized in that: The fluidity of the mechanically stirred mortar is strictly controlled between 90-100 mm. This fluidity range can ensure that the mortar has appropriate fluidity and adhesion during the spraying process, thereby improving construction efficiency and reducing the risk of defects such as unevenness or hollowing after construction.

5. The production and construction process of a machine-blasted sand mortar according to claim 1, characterized in that: The scraping angle of the thin scraper is controlled between 15° and 30° to ensure that the scraping operation can apply uniform pressure, thereby filling the recesses on the mortar surface and avoiding excessive scraping resulting in too thin mortar.

6. The production and construction process of machine-blasted mortar according to claim 1, characterized in that: The water temperature and humidity during water curing should be kept within a certain range. Usually the water temperature is controlled between 15℃ and 25℃, and the humidity is kept above 70% to ensure that the mortar can be fully hydrated and enhance its strength.

7. The production and construction process of machine-blasted mortar according to claim 1, characterized in that: The starting sequence of the shotcrete machine and the air compressor is: start the air compressor first, and then start the shotcrete machine after the air compressor runs stably. This can ensure the normal operation of the shotcrete machine and avoid equipment damage or uneven spraying due to improper starting.

8. The production and construction process of machine-blasted mortar according to claim 1, characterized in that: The equipment cleaning fluid used during the construction process should be non-toxic and environmentally friendly. Avoid using corrosive chemical cleaning agents to avoid damaging the equipment or polluting the construction environment.

9. The production and construction process of machine-blasted mortar according to claim 1, characterized in that: The mortar mix used for wall spraying includes high-quality cement, fine sand and additives to ensure the strength, adhesion and crack resistance of the mortar, and to ensure that the surface after construction is not prone to bubbles or peeling.

10. The production and construction process of machine-blasted sand mortar according to claim 1, characterized in that: After the construction is completed, if there are local unevenness or depressions on the wall, workers should repair them in time during the initial hardening stage to ensure that the wall is defect-free and achieve high-quality construction results.

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