Color Spraying Construction of Concrete and Plastering Surface
1 range
The process standards for industrial and civil engineering and structural engineering inside and outside the concrete and plaster (cement mortar or mixed mortar) surface color spray works.
2 construction preparation
2.1 Material requirements:
2.1.1 According to the design requirements, the basic situation, construction environment and season, choose, buy architectural coatings and other supporting materials.
2.2 The main equipment:
2.2.1 high-rise building paint construction should adopt the electric basket, multi-storey building coating construction should adopt the bridge shelf, the indoor layer according to the specific circumstances of the situation, ready to operate the shelves, other tools should be determined in accordance with the construction method of supporting preparation, synthesis 2, spraying equipment: air compressor (maximum pressure 10MPa, exhaust room 0.6m3), high-pressure airless sprayer (including supporting (including the supporting equipment): 1, brushing tools: pen, brush, Equipment); 3. Spray guns, spray guns, high pressure hose, etc .; 4. Roller tools: plush roller, embossing roller, printing roller, hard plastic or rubber roller; 5. Bundle tools: manual or electric paint applicator and Supporting equipment; 6. Waxing tools: stainless steel trowel, plastic trowel, care gray board, etc. 7. Hand-held electric mixer and so on.
2.3 Operating conditions:
2.3.1 The concrete and the wall wipe mixed mortar The ash has been completed, and after drying, the moisture content should meet the following requirements: 1. Surface application of solvent-based coating, the moisture content of not more than 8%; Water-based and floating paint, the moisture content of not more than 10%.
2.3.2 Hydropower and equipment, the top wall reserved, embedded parts have been completed.
2.3.3 Door and window installation has been completed and has applied base oil (dry oil, anti-rust paint), such as the use of mechanical spray paint, should not spray the site covered to prevent pollution.
2.3.4 Water-borne and latex coating Ambient temperature at the time of application shall be controlled according to the temperature of the product specification. Indoor application of paint in winter, should be carried out under the conditions of heating, room temperature should be balanced, not a sudden change.
2.3.5 Apply the substrate or base layer should be missing the edge of the missing corner, with 1: 3 cement mortar (or polymer cement mortar) repair; surface linen and gap application putty fill Qi Ping (external walls, kitchen, bathroom And toilets and other parts of the need to use paint, should be used with water resistant putty).
2.3.6 technical personnel to carry out the construction of the end, it should be emphasized that technical measures and quality requirements. Large-scale construction should be preceded by a model, identified by the quality inspection departments qualified before the team can organize the construction team.
3 operating process
3.1 Process flow:
Principle is the first on the next, the first after the roof wall.
Primary treatment → sub-sub-lattice joints → apply the back cover coating → spray, roll, bomb the main coating →
Spray, roll, surface layer coating → paint finishing
3.2 Primary treatment: the concrete or cement mortar plaster surface surface of the dust, dirt, splashes and mortar flow marks and other clean. While the grass-roots missing edge out angle, with 1: 3 cement mortar repaired; surface linen and the gap application polyvinyl acetate emulsion l, cement 5, water, a synthesis of putty filling flush, and with the same mix of putty Local putty putty, to be putty dry, polished with sandpaper.
3.3 sub-lattice joints: First, according to the design requirements for hanging vertical, sets of square, looking for rules, playing sub-grid slot. This work must be strictly in accordance with the elevation control is good, must ensure that the building around to circle, but also consider the external wall coating engineering segment, should be sub-lattice. The wall of the corners of the water or down the pipe and other boundaries and construction joints, the vertical sub-lattice joints must be hanging straight, do not use the scale, or poor 3mm will be very obvious, the grid must be flat, smooth, Thickness consistent.
3.4 The specific operating process requirements are:
3.4.1 Brush: Brushing direction, the distance should be consistent, then Cha should be in the sub-grid joints. Such as the use of paint drying faster, should be reduced brush distance. Brush is generally not less than two, should be in the former one after the next paint brush table. The interval between the two coatings is generally 2 ~ 4h.
3.4.2 Spraying: Spraying should be based on the type of paint used, viscosity, consistency, maximum particle size, to determine the type of spraying equipment, nozzle mouth, spray pressure, and the distance between the base and so on. General requirements of the gun running, the nozzle center line must be perpendicular to the wall, spray gun and the wall has a regular parallel to the movement, speed should be consistent. The coating should be left in the sub-grid joints. Do not spray paint and doors and windows of the site, should be carefully blocked. Spraying operation should generally be continuous, one survived.
3.4.3 Roller coating: Roller coating operation should be based on the variety of paint, floral requirements to determine the type of roller. Operation in the roll on the dip in a small amount of paint, the wall in the pre-painted on the vertical back and forth rolling, should avoid distorting the snake.
3.4.4 shells Tu: first brush in the grass-roots l ~ 2 primer coating, to be dry after the bomb Tu. Tu Tu, the Tu Tu of the machine mouth should be vertical, right wall, the distance to maintain 30 ~ 50cm, according to a certain speed from top to bottom, from left to right bomb Tu. The choice of embossing-type shells, the timely color point should be flattened.
3.4.5 multi-layer coating: This is the bottom coating, the main coating, surface coating composition of the coating. The bottom coating can be sprayed, rolled, brushing any of the methods of construction. Spraying the main coating with spray, spray the size of flowers, density determined according to need. If you want to flatten the flower point, it should be in the spray point after the timely use of plastic or rubber roller dipped in gasoline or xylene flattened. After the main coating drying, you can paint the surface coating. Surface coating generally coated two, the time interval of about 2h.
The three coatings of a multi-layer coating can be made of the same material, or of a different material. For example, in addition to the main coating can be used synthetic resin emulsion paint, silica sol coating, but also can be drawn from convenient, inexpensive polymer cement mortar spraying. Surface coating can also be based on the different requirements of gloss, respectively, the choice of water-based paint or solvent-based coatings. Sometimes you can also add a coating as needed.
3.5 Dressing: Paint finishing work is very important, the main form of its dressing, there are two, one is with the construction with the dressing, which runs through the class after the completion of each sub-grid or one step rack; the other is the entire sub- After the completion of the sub-project, the organization should conduct a comprehensive inspection, such as the discovery of "leakage coating", "through the end", "flow fall" and other ills should be immediately trimmed and processed.
4 quality standards
4.1 Warranty items
4.1.1 Material, quality and color of the color spray coating meet the design requirements and have the product certificate, and must be used according to the product combination.
4.1.2 between the plaster and the plaster layer and the coating must be firmly bonded, no delamination, hollowing and cracks and other defects.
4.2 Basic Items:
4.2.1 Spraying, rolling, coating and other surface color consistent, pattern, color point size uniformity, no significant access Cha, no Tu Tu, through the end of the flow and fall.
4.2.2 sub-grid (seam) width and depth of uniform, smooth (slit), straight corners, flat vertical, smooth.
4.2.3 The flowing direction is correct and the dripping line is straight. The depth and width of the drip tank are not less than 10mm, neat and consistent.
4.3 Permissible deviation items, see Table 9-42.
Spray, Lacquer, and Bounce Tolerances Table 9-42
Line item Allowable deviation (mm) Inspection method
1 vertical vertical 5 2m cable tray inspection
2 surface smooth 4 2m by foot and feeler check
3 yin and yang angle vertical 4 2m care board inspection
4 Yin and Yang Founder 4 20cm square feet and feeler check
5 points grid (seam) Straight 3 pull 5m small line, less than 5m pull line and the amount of inspection
Note: The above should be in the spray, roll, shells before construction, check the quality of the surface of cement mortar.
5 protection of finished products
5.1 Before the construction should not be sprayed and Tu Tu doors and windows and wall cover to protect, to prevent contamination.
5.2 spray, roll, bomb Tu completed, the board should be promptly protected with a wooden hole to prevent damage to the collision.
5.3 When dismantling or turning the shelves, it is necessary to prevent collision between the wall and the pollution coating.
5.4 oil workers in the construction operation is prohibited pedal has been completed construction site, should also be careful not to oil drums, paint contamination of the wall.
5.5 indoor construction are not allowed to clear the garbage from the inside out, to prevent pollution spray. Rolling, coating the surface coating.
5.6 balcony, rain cover and other outlets should adopt a rigid plastic pipe for the drainage pipe to prevent the use of iron pipe caused by the opposite layer of corrosion.
5.7 paint before drying, should prevent the rain, dirt and hot air pollution, such as in the event, should be promptly processed.
5.8 After the application tool is applied, it should be cleaned or soaked in the appropriate solvent to ensure the next continue to use.
6 should pay attention to quality problems
6.1 spray, roll, surface layer hollowing, cracks: the main reason is the uneven structure of the basement, the bottom plaster thickness uneven, not according to the rules layering sub-base and sub-grid construction, as a large area of cement mortar wiping, Not layering, drying shrinkage, will form hollow drum cracks; In addition, the surface layer, the grass-roots clean-up is not the net, the grass-roots relatively dry, also will face crack.
6.2 Uneven color, the second repair then Croucher obvious: the main reason is not allowed to control the mixture, mixed with uneven material; spray, roll, stretching practices vary, or the thickness of the coating is different; the use of a single row of scaffolding construction, with the demolition With the plaster, with the spray, roll, bomb, because the second layer of repair the bottom of the gray layer and the original plaster layer moisture content is different, the surface layer after the construction of high water content, resulting in surface repair secondary access Clearly. Spray, roll, surface layer of the bomb to specify the person responsible for the construction, in order to operate the same way, the surface layer of uniform thickness control; prohibited single-row outside the shelf, such as the use of dual-shelf, such as the use of double- Exclusive shelf construction, the ban on the rod to be pressed on the wall, resulting in the second repair, affecting the appearance of the coating.
6.3 bottom gray wipe the uneven, or wipe clear: the main reason is the spray, roll, shells thin coating, the bottom ash on the shortcomings, in order to cover up through the surface layer is not covered, so the bottom ash wipe , Should be tested according to the standard mortar cement mortar surface inspection, otherwise, affect the surface texture.
6.4 surface layer of the construction was obvious: the main reason is the surface layer of construction will not be left in the inconspicuous place, but no plans to throw Cha Cha, the formation of surface layer of flowers. Solution: stay in the middle of the construction of rake must stay in sub-grid, expansion joints or pipe, such as the fall of the tube and other inconspicuous place, is strictly prohibited in the middle of the block Cha Cha. Second, then pay attention to the construction of the thickness of the coating, to avoid overlapping coating, the formation of local flowers.
6.5 The color of the construction is very good, the pollution is not clear: the main reason is the color of the coating is not good choice, the completion of construction completed by the wind and rain and sun, color changes, surface finish when the pollution is unclear. Solution: the choice of anti-ultraviolet, anti-aging inorganic pigments, construction, strict control of water, half-way are not free to add water to maintain the same color; to prevent surface pollution, can be finished 24h after spraying a silicone, and Note that when spraying the same thickness to spray, it is necessary to prevent leakage spray, but also to prevent the flow or too thick, forming a sense of flowers.
7 Quality records
This process standard shall have the following quality records:
7.1 various types of paint factory certification.
7.2 Sub-project quality checklist.
The process standards for industrial and civil engineering and structural engineering inside and outside the concrete and plaster (cement mortar or mixed mortar) surface color spray works.
2 construction preparation
2.1 Material requirements:
2.1.1 According to the design requirements, the basic situation, construction environment and season, choose, buy architectural coatings and other supporting materials.
2.2 The main equipment:
2.2.1 high-rise building paint construction should adopt the electric basket, multi-storey building coating construction should adopt the bridge shelf, the indoor layer according to the specific circumstances of the situation, ready to operate the shelves, other tools should be determined in accordance with the construction method of supporting preparation, synthesis 2, spraying equipment: air compressor (maximum pressure 10MPa, exhaust room 0.6m3), high-pressure airless sprayer (including supporting (including the supporting equipment): 1, brushing tools: pen, brush, Equipment); 3. Spray guns, spray guns, high pressure hose, etc .; 4. Roller tools: plush roller, embossing roller, printing roller, hard plastic or rubber roller; 5. Bundle tools: manual or electric paint applicator and Supporting equipment; 6. Waxing tools: stainless steel trowel, plastic trowel, care gray board, etc. 7. Hand-held electric mixer and so on.
2.3 Operating conditions:
2.3.1 The concrete and the wall wipe mixed mortar The ash has been completed, and after drying, the moisture content should meet the following requirements: 1. Surface application of solvent-based coating, the moisture content of not more than 8%; Water-based and floating paint, the moisture content of not more than 10%.
2.3.2 Hydropower and equipment, the top wall reserved, embedded parts have been completed.
2.3.3 Door and window installation has been completed and has applied base oil (dry oil, anti-rust paint), such as the use of mechanical spray paint, should not spray the site covered to prevent pollution.
2.3.4 Water-borne and latex coating Ambient temperature at the time of application shall be controlled according to the temperature of the product specification. Indoor application of paint in winter, should be carried out under the conditions of heating, room temperature should be balanced, not a sudden change.
2.3.5 Apply the substrate or base layer should be missing the edge of the missing corner, with 1: 3 cement mortar (or polymer cement mortar) repair; surface linen and gap application putty fill Qi Ping (external walls, kitchen, bathroom And toilets and other parts of the need to use paint, should be used with water resistant putty).
2.3.6 technical personnel to carry out the construction of the end, it should be emphasized that technical measures and quality requirements. Large-scale construction should be preceded by a model, identified by the quality inspection departments qualified before the team can organize the construction team.
3 operating process
3.1 Process flow:
Principle is the first on the next, the first after the roof wall.
Primary treatment → sub-sub-lattice joints → apply the back cover coating → spray, roll, bomb the main coating →
Spray, roll, surface layer coating → paint finishing
3.2 Primary treatment: the concrete or cement mortar plaster surface surface of the dust, dirt, splashes and mortar flow marks and other clean. While the grass-roots missing edge out angle, with 1: 3 cement mortar repaired; surface linen and the gap application polyvinyl acetate emulsion l, cement 5, water, a synthesis of putty filling flush, and with the same mix of putty Local putty putty, to be putty dry, polished with sandpaper.
3.3 sub-lattice joints: First, according to the design requirements for hanging vertical, sets of square, looking for rules, playing sub-grid slot. This work must be strictly in accordance with the elevation control is good, must ensure that the building around to circle, but also consider the external wall coating engineering segment, should be sub-lattice. The wall of the corners of the water or down the pipe and other boundaries and construction joints, the vertical sub-lattice joints must be hanging straight, do not use the scale, or poor 3mm will be very obvious, the grid must be flat, smooth, Thickness consistent.
3.4 The specific operating process requirements are:
3.4.1 Brush: Brushing direction, the distance should be consistent, then Cha should be in the sub-grid joints. Such as the use of paint drying faster, should be reduced brush distance. Brush is generally not less than two, should be in the former one after the next paint brush table. The interval between the two coatings is generally 2 ~ 4h.
3.4.2 Spraying: Spraying should be based on the type of paint used, viscosity, consistency, maximum particle size, to determine the type of spraying equipment, nozzle mouth, spray pressure, and the distance between the base and so on. General requirements of the gun running, the nozzle center line must be perpendicular to the wall, spray gun and the wall has a regular parallel to the movement, speed should be consistent. The coating should be left in the sub-grid joints. Do not spray paint and doors and windows of the site, should be carefully blocked. Spraying operation should generally be continuous, one survived.
3.4.3 Roller coating: Roller coating operation should be based on the variety of paint, floral requirements to determine the type of roller. Operation in the roll on the dip in a small amount of paint, the wall in the pre-painted on the vertical back and forth rolling, should avoid distorting the snake.
3.4.4 shells Tu: first brush in the grass-roots l ~ 2 primer coating, to be dry after the bomb Tu. Tu Tu, the Tu Tu of the machine mouth should be vertical, right wall, the distance to maintain 30 ~ 50cm, according to a certain speed from top to bottom, from left to right bomb Tu. The choice of embossing-type shells, the timely color point should be flattened.
3.4.5 multi-layer coating: This is the bottom coating, the main coating, surface coating composition of the coating. The bottom coating can be sprayed, rolled, brushing any of the methods of construction. Spraying the main coating with spray, spray the size of flowers, density determined according to need. If you want to flatten the flower point, it should be in the spray point after the timely use of plastic or rubber roller dipped in gasoline or xylene flattened. After the main coating drying, you can paint the surface coating. Surface coating generally coated two, the time interval of about 2h.
The three coatings of a multi-layer coating can be made of the same material, or of a different material. For example, in addition to the main coating can be used synthetic resin emulsion paint, silica sol coating, but also can be drawn from convenient, inexpensive polymer cement mortar spraying. Surface coating can also be based on the different requirements of gloss, respectively, the choice of water-based paint or solvent-based coatings. Sometimes you can also add a coating as needed.
3.5 Dressing: Paint finishing work is very important, the main form of its dressing, there are two, one is with the construction with the dressing, which runs through the class after the completion of each sub-grid or one step rack; the other is the entire sub- After the completion of the sub-project, the organization should conduct a comprehensive inspection, such as the discovery of "leakage coating", "through the end", "flow fall" and other ills should be immediately trimmed and processed.
4 quality standards
4.1 Warranty items
4.1.1 Material, quality and color of the color spray coating meet the design requirements and have the product certificate, and must be used according to the product combination.
4.1.2 between the plaster and the plaster layer and the coating must be firmly bonded, no delamination, hollowing and cracks and other defects.
4.2 Basic Items:
4.2.1 Spraying, rolling, coating and other surface color consistent, pattern, color point size uniformity, no significant access Cha, no Tu Tu, through the end of the flow and fall.
4.2.2 sub-grid (seam) width and depth of uniform, smooth (slit), straight corners, flat vertical, smooth.
4.2.3 The flowing direction is correct and the dripping line is straight. The depth and width of the drip tank are not less than 10mm, neat and consistent.
4.3 Permissible deviation items, see Table 9-42.
Spray, Lacquer, and Bounce Tolerances Table 9-42
Line item Allowable deviation (mm) Inspection method
1 vertical vertical 5 2m cable tray inspection
2 surface smooth 4 2m by foot and feeler check
3 yin and yang angle vertical 4 2m care board inspection
4 Yin and Yang Founder 4 20cm square feet and feeler check
5 points grid (seam) Straight 3 pull 5m small line, less than 5m pull line and the amount of inspection
Note: The above should be in the spray, roll, shells before construction, check the quality of the surface of cement mortar.
5 protection of finished products
5.1 Before the construction should not be sprayed and Tu Tu doors and windows and wall cover to protect, to prevent contamination.
5.2 spray, roll, bomb Tu completed, the board should be promptly protected with a wooden hole to prevent damage to the collision.
5.3 When dismantling or turning the shelves, it is necessary to prevent collision between the wall and the pollution coating.
5.4 oil workers in the construction operation is prohibited pedal has been completed construction site, should also be careful not to oil drums, paint contamination of the wall.
5.5 indoor construction are not allowed to clear the garbage from the inside out, to prevent pollution spray. Rolling, coating the surface coating.
5.6 balcony, rain cover and other outlets should adopt a rigid plastic pipe for the drainage pipe to prevent the use of iron pipe caused by the opposite layer of corrosion.
5.7 paint before drying, should prevent the rain, dirt and hot air pollution, such as in the event, should be promptly processed.
5.8 After the application tool is applied, it should be cleaned or soaked in the appropriate solvent to ensure the next continue to use.
6 should pay attention to quality problems
6.1 spray, roll, surface layer hollowing, cracks: the main reason is the uneven structure of the basement, the bottom plaster thickness uneven, not according to the rules layering sub-base and sub-grid construction, as a large area of cement mortar wiping, Not layering, drying shrinkage, will form hollow drum cracks; In addition, the surface layer, the grass-roots clean-up is not the net, the grass-roots relatively dry, also will face crack.
6.2 Uneven color, the second repair then Croucher obvious: the main reason is not allowed to control the mixture, mixed with uneven material; spray, roll, stretching practices vary, or the thickness of the coating is different; the use of a single row of scaffolding construction, with the demolition With the plaster, with the spray, roll, bomb, because the second layer of repair the bottom of the gray layer and the original plaster layer moisture content is different, the surface layer after the construction of high water content, resulting in surface repair secondary access Clearly. Spray, roll, surface layer of the bomb to specify the person responsible for the construction, in order to operate the same way, the surface layer of uniform thickness control; prohibited single-row outside the shelf, such as the use of dual-shelf, such as the use of double- Exclusive shelf construction, the ban on the rod to be pressed on the wall, resulting in the second repair, affecting the appearance of the coating.
6.3 bottom gray wipe the uneven, or wipe clear: the main reason is the spray, roll, shells thin coating, the bottom ash on the shortcomings, in order to cover up through the surface layer is not covered, so the bottom ash wipe , Should be tested according to the standard mortar cement mortar surface inspection, otherwise, affect the surface texture.
6.4 surface layer of the construction was obvious: the main reason is the surface layer of construction will not be left in the inconspicuous place, but no plans to throw Cha Cha, the formation of surface layer of flowers. Solution: stay in the middle of the construction of rake must stay in sub-grid, expansion joints or pipe, such as the fall of the tube and other inconspicuous place, is strictly prohibited in the middle of the block Cha Cha. Second, then pay attention to the construction of the thickness of the coating, to avoid overlapping coating, the formation of local flowers.
6.5 The color of the construction is very good, the pollution is not clear: the main reason is the color of the coating is not good choice, the completion of construction completed by the wind and rain and sun, color changes, surface finish when the pollution is unclear. Solution: the choice of anti-ultraviolet, anti-aging inorganic pigments, construction, strict control of water, half-way are not free to add water to maintain the same color; to prevent surface pollution, can be finished 24h after spraying a silicone, and Note that when spraying the same thickness to spray, it is necessary to prevent leakage spray, but also to prevent the flow or too thick, forming a sense of flowers.
7 Quality records
This process standard shall have the following quality records:
7.1 various types of paint factory certification.
7.2 Sub-project quality checklist.
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