1 scope
The technology standard is applicable to general industrial and civil construction the metope of spraying, roller coating, coating construction.
2 construction preparation
2.1 material and main equipments:
2.1.1 cement: no. 325 and more than ordinary cement, slag cement, ash cement. Cement should be used in a project with a batch of products, and should keep at a time. White cement should be selected according to the design requirements.
2.1.2 fine aggregate: adopt all sorts of small scraps of eight mile, particle size of about 2 mm in dolomite crumbs, rosin stone chips, etc.; Also can be used in the coarse sand and silt content should be not greater than 3%.
2.1.3 pigment: should choose light resistance, good alkali resistance paint, such as iron oxide red, iron oxide yellow, groups such as green, ochre, a pigment used in the project should use the same manufacturer, the same brand, the same batch production of products, and should keep at a time.
2.1.4 107 glue: 10% ~ 12% solid content, pH 7 ~ 8, relative density 1.05; Organic silicon: 30% solid content, pH 13, relative density 1.23.
2.1.5 wooden frame: according to the width of the design requirements, arrange for backup.
2.1.6 cambric, black tape: according to the need to prepare.
2.1.7 major equipment: should be equipped with small mechanical stirring barrels, air compressor 1 ~ 2 sets (0.6 m3 / mm, displacement pressure of 60 ~ 80 n/cm3), pressure hose (available 3/8 "oxygen tubes), joint, spray pipe, tank and pressure grouting, 3 mm sieve, slurry hose, hose connectors, the spray gun.
Roller coating used in all kinds of decorative pattern of the rubber roll, loose scraper.
The mud used in playing the TuQi. And screens, VAT, grey spoon, measuring scales, wood float, iron float, chalk line package, frame, cloth, and black tape, wood by feet, feet, big bar, water brush, combination brush pen, etc.
2.2 operation conditions:
2.2.1 doors and Windows must be installed according to the designed position and elevation in advance, and check whether the installation is firm, the cracks around the hole wall is in line with the requirements.
2.2.2 metope and waterproof node should be processed at the grass-roots level, complete the storm sewer pipelines, equipment capacity wall embedded installation work, and the mouth of the cave with cement mortar screeding, windowsill, dry.
2.2.3 scaffold had better choose double exclusive shelves, hanging basket or activity, metope can not leave a foot hand-eye; Scaffolding poling is apart from wall not less than 50 cm, from wooden wall not less than 20 cm, scaffolding step higher and exterior frame of the best suitable height.
2.2.4 according to corresponding mechanical construction need ready in advance, and in advance of commissioning power supply is connected.
Spraying with the air compressor (2) 0.6 m3 / mm, 3 mm sieve, a spray coating with two fights, high pressure trachea several meters.
The mud with cylindrical shells TuQi, according to the need to prepare several machines, high pressure trachea several meters.
Several roller roller coating.
2.2.5 spray, roll in advance according to the requirement of design, the example of the mud, and the appraisal should comply with the requirements.
2.2.6 ahead of time do not spray, do not play parts of a block, and should be ready to cover more boards. Set aside.
2.2.7 operation temperature is not lower than + 5 ℃ of the construction site.
3 operation process
3.1 process:
Metope processing at the grass-roots level to play lines, frame, the article stick - mixing layer material - spraying (roller coating, coating) - >
The article divided the to tick off seam, curing
3.2 basic level processing: precast concrete external wall plate for grassroots, prior to its lack of edge horn of floor uneven brush water wet, the mend brush water blending 10% heavier 107 rubber cement, then wipe induce wipe flat 1:3 cement mortar, waterproof and the seam. Tank after serious processing, get wet in the rain test, no leakage before the next working procedure.
For brick and aerated concrete wall at the grass-roots level, the grassroots of cast-in-situ concrete wall plastering, should be executed according to the outer wall plastering cement mortar process. It is should pay attention to the following:
3.2.1 mortar surface elevation of the bottom control: with the underlying mortar, leave the surface should be 12 mm thickness, by considering surface plastering cement mortar, 8 mm thick, spray, roll, play 2 ~ 4 mm thick.
3.2.2 surface coating is different, have different requirement about the quality of the cement mortar layer.
3.2.2.1 spraying: cement mortar big bar, leveling wood float rub flat, surface without holes, sand holes, color uniform on the surface, no scratches.
3.2.2.2 roller coating, the mud: cement mortar for big bar, leveling surface without holes, wood float rub flat, light iron float voltage, after being no MingShui, with a soft brush dips in water straight down, brush again, requirements on the surface of the same color, no lines, brush grain is consistent.
3.2.2.3 frame according to your drawings, lines, and on the basis of nuiko frame width and depth chose, stick a position to give an accurate, horizontal rows.
3.2.2.4 spray, roll, mud by construction, should be don't need the part of the application of good shade, prevent the pollution.
3.2.2.5 construction method, it is best to first base, by covered with cement mortar, and with the wipe with maintenance, falling with the shelves, and keeps on it, will again rise, shelf from the top to spray coating, rolling, playing under construction, in order to make sure the color of the coating.
3.3 material:
3.3.1 will cement the sifted, bagging and set aside.
3.3.2 rainfall distribution on 10-12 stone chips (or medium and coarse sand), paint a wire netting screen respectively, stone chips for larger particles, should be 3 mm screen, and then respectively according to the heavyweight match, bagging for standby.
3.3.3 according to the proportion of the ingredients, have the specialist is responsible for the control.
3.4 surface:
3.4.1 track spraying layer:
3.4.1.1 mixing mortar: use a small mechanical mixing barrel, according to the requirements of the coating increases with the increasing mix with cement mortar. To cement and stone chips (or sand) press 1:2 (volume ratio) dry mix evenly, add water 10% of the 107 glue solution mixing evenly, make its consistency of 11 cm, and mixed with cement in mortar to the weight of 0.3% of calcium powder, mixing evenly, repeatedly color should be in accordance with the sample preparation.
3.4.1.2 reserve according to the original frame of the location, the original article frame again.
3.4.1.3 spraying: hot, dry season, sprinkling water should be wet before spraying, start the air compressor, check the high pressure gas pipelines leakage, and its pressure stable at about 0.6 MPa. Spraying, the spray gun nozzle should be perpendicular to the wall, and leave the metope of 30 to 50 cm, infuse slurry spray pipe and start the trachea switch, the slurry with high pressure air injection to the wall. If spraying pressure have change, can be appropriately adjust the distance between the nozzle and metope. Granular spraying generally twice survival, for the first time uniform spray, thickness in 1.5 mm or so, the l ~ 2 h to spray on the second time, and make it spray. For spraying color is consistent, uniform particles, not out of pulp, thickness, total thickness control in 3 ~ 4 mm.
Spend wavy spraying and spraying: general control three times. First pass at the grass-roots level becomes angry, don't too thick coating, such as wall, can be after spraying coating with wood float rub flat, heavy spray; Second time spray to the bottom cover, pulp flow; Pulp out third time sprayed to the surface, the surface of the wavy, mortar full, do not flow, color is consistent, the total thickness of 3 ~ 4 mm.
Take the coating is in wave coating on the surface of stay after the dry, spray a spend according to design requirements, in order to increase the surface texture.
3.4.1.4 article up, repair, tick off seam: spray after the article will be divided up out in time, and will be clean, seam jointing according to the design requirement.
Spray 3.4.1.5 organic silicon: survival after 24 h, spray evenly on the surface of a layer of organic silicon agent, spray evenly, not flowing.
3.4.2 roller coating layer:
3.4.2.1 material mixing: roller coating mortar mixing ratio is 1:1:0.2, commonly known as: arenaceous = 1:1 volume ratio, cement and mixed with cement weighs 20% of 107. Particular way is: going yarn tension screen, sand and cement according to the volume 1:1 match well, dry mix evenly, and then use water aqueous solution of 20% of the 107 glue mixing, consistency is like sesame paste, pull the hair to flow, falling advisable, mixing good polymer cement mortar, should be used after vibrating screen.
3.4.2.2 sticky frame: according to the original render leave a position, to stick good article frame.
3.4.2.3 roll: roll should grasp at the bottom of the dry humidity, water absorption faster should be appropriately when adding water wet, water quantity with roller coating without flowing advisable, two people cooperation during operation, a person will be mixed in advance before thin mortar again, then wipe with a thin layer, use iron float slicked down, uniform coating thickness; Another man followed with roll roll, otherwise couldn't pull the wool to after dry, when the roll running too fast, and the strength should be consistent, survival when the roll should be down, to get out of the decorative pattern of natural down to the water waves, in order to reduce dust wall area.
3.4.2.4 article, tick off seam: roller coating finish the article frame, if you want to do Yang Angle, should be carried out in a large area after the live.
3.4.2.5 spray silicone to add water: 500 g organic silicon with 4500 g water mixing evenly, room temperature 24 h after injection of organic silicon roller coating, spray quantity depends on its surface humidity, if it rains within 24 h after injection, wash it will surface, reach due effect, must be heavy.
Rule 3.4.3 bomb overlay:
3.4.3.1 with bottom paste (weight ratio) : ordinary cement, 100, 20, 90107 glue water paint with model; 13, white cement, 100, 80107 glue water paint with the template.
3.4.3.2 color matching point pulp (weight ratio) : cement, 100, 40, 107 glue, paint with the sample, according to the above mixture ratio, mix paint and glue mix, pour cement, mix into a slurry.
3.4.3.3 article stick divided according to the requirements of design.
3.4.3.4 brush bottom paste: paste brush will have good bottom to cement mortar on the surface has been prepared in construction of large area can use spray coating, spray evenly so far.
3.4.3.5 play take pulp: will have matched with good color slurry injection cylinder elastic device, then turn the elastic flat handle and the color points pulp jilt the paste; Spring color paste, should be according to the different load respectively different elastic device, each operating a cone, flow process, namely the first person to play the first paste, another man then to play another kind of paste. Color points to play even, foil consistent with each other, play granular paste point should approximate circle.
3.5 winter construction: in the early winter period construction, should not be cold phase construction.
3.5.1 track of winter should use hot water mixing, plastering mortar and insulation measures, not straight when daub mortar temperature below + 5 ℃.
3.5.2 early hardened mortar plastering layer may not be cold, spray coating, rolling, playing before hardening should not be cold.
3.5.3 air temperature is below 5 ℃, outdoor plaster mortar can be added to reduce the freezing temperature of salt and calcium chloride, its content is determined by the design. Surface spray, rolling, playing, additive dosage and varieties should be determined based on the test.
3.5.4 with freezing method of masonry walls, outdoor rendering should be to defrost completely before rendering them, may not be washed with hot water freezing wall, or eliminate the frost on the wall with hot water.
2.6.2 early seas, to prevent the ash layer plastering mortar shall not be mixed with white plaster, to increase the workability of mortar, the volume can be used with the fly ash to replace.
4 quality standards
4.1 ensure project: varieties, the quality of materials must comply with the design requirements; Between various plaster and plaster between layer and the substrate must be bonded firmly, no delaminating, empty drum and cracks and other defects.
4.2 the basic items:
2 spraying, roller coating, elastic coating, surface consistent color decorative pattern, color dot size uniform, if not explicitly, no coating, gone and leakage flow.
Article 4.2.2 frame (seam) uniform, width and depth of the article (seam) level off is smooth, the edges tidy, horizontal flat vertical and smooth.
Holdings of the water slope to the right, drip line straight, throating depth and width are not less than 10 mm, and uniformity.
4.3 allowable deviation project, see table 9-9.
Spraying, roller coating, mud by allowable deviation table 9-9
Will project allowable deviation check method (mm)
1 vertical facade 5 2 m line board check
Surface is flat and level 4 2 m by feet and wedge feeler check
Three Yin and Yang Angle vertical 4 2 m line board check
4 4 20 cm square chi Yin and Yang Angle founder and wedge feeler check
Article 5 divisions (joint) straight line 3, 5 m, less than 5 m on line inspection
5 finished product protection
5.1 before construction should be spray, roll, will not play with the doors and Windows and wall protection cover.
5.2 spray, roll, after completion of the mud, with boards will mouth, Angle to safeguard, in time to prevent the damage of collision.
5.3 open shelf fight touch damage of wall surface coating.
5.4 oil engineering construction, it is strictly prohibited to stamped on has finished construction site, and prevent the tank knocked off, metope paint pollution.
5.5 interior construction, to prevent pollution of the spray, rolling, coating surface layer.
5.6 the balcony, rain cover outlet as appropriate USES rigid plastic pipe buried, best don't iron pipe, prevent rusting on the surface of the.
6 should pay attention to quality problems
6.1 uneven color, secondary repair if obvious: the main reason is that of master, mixed charging uneven; Spray, rolling, playing technique is differ, or different coating thickness; Adopt single exclusive frame construction, along with the open shelves, along with the foundation hand-eye, fill with plaster, with spray, rolling, playing, live with the original floated coat for repair after ash water cut is differ, if obvious surface caused by secondary repair. Solution: shall master the mixture ratio, reasonable ingredients, measurement accuracy; Spray, rolling, playing surface appoint someone who's in charge of construction, construction technique, the surface thickness is consistent; Use of such methods of construction, it is forbidden to use single xenophobic shelf; If use double exclusive frame construction, also to ban to the strut by pressure on the wall, so as not to cause secondary repair, ash layer effect the beauty of the coating.
6.2 spray, roll, the surface of the empty drum and fracture: the main reason is that the underlying plaster no points, according to the requirement of cement mortar area is too large, drying shrinkage is different, can form an empty drum and cracking. Crack and surface cracking at the bottom of the empty, therefore, should render ash points according to the requirement of the drawings, in order to solve grey layer shrinkage crack.
6.3 bottom ash was uneven, or with obvious grain: mainly because spray, rolling, coating is thinner, the bottom ash headaches, want to through is cannot cover the cover to cover. Bottom ash is required after the good, should be to check for acceptance by the standard of cement mortar plaster jiaoyan, otherwise, the coating surface coating can't.
6.4 surface after if obvious: the main reason is that road surface construction article set will be if the son in the compartment or inconspicuous place, but the unplanned disorderly jilt if, if the obvious surface coating. Solution: to jilt if among construction, must take if the son to frame joint, expansion joint, or after tube inconspicuous place, it is strictly prohibited to jilt to rub in the piece; In construction of secondary pick if pay attention to the coating thickness, avoid coating overlap, form a two-tone.
6.5 construction when the color is very good, band polluted: causes the coating color is bad, the wind, rain, sun color change, make a stern test for severe pollution, not ShouKan. Solution: use ultraviolet resistance, anti-aging, light resistance of paint, construction, strictly control the adding water. Midway can't just add water, in order to make sure the same color; In order to prevent the pollution of the surface, in 24 h after injection silicone coating finish. And pay attention to the organic silicon coating thickness is consistent, prevent flowing or too thick, form sense.
7 quality records
This technology standard should have the following quality records:
7.1 the material of raw material certificate and test report.
7.2 the cement factory.
7.3 additional materials such as adhesives, admixture factory certificate.
7.4 quality inspection records.
The technology standard is applicable to general industrial and civil construction the metope of spraying, roller coating, coating construction.
2 construction preparation
2.1 material and main equipments:
2.1.1 cement: no. 325 and more than ordinary cement, slag cement, ash cement. Cement should be used in a project with a batch of products, and should keep at a time. White cement should be selected according to the design requirements.
2.1.2 fine aggregate: adopt all sorts of small scraps of eight mile, particle size of about 2 mm in dolomite crumbs, rosin stone chips, etc.; Also can be used in the coarse sand and silt content should be not greater than 3%.
2.1.3 pigment: should choose light resistance, good alkali resistance paint, such as iron oxide red, iron oxide yellow, groups such as green, ochre, a pigment used in the project should use the same manufacturer, the same brand, the same batch production of products, and should keep at a time.
2.1.4 107 glue: 10% ~ 12% solid content, pH 7 ~ 8, relative density 1.05; Organic silicon: 30% solid content, pH 13, relative density 1.23.
2.1.5 wooden frame: according to the width of the design requirements, arrange for backup.
2.1.6 cambric, black tape: according to the need to prepare.
2.1.7 major equipment: should be equipped with small mechanical stirring barrels, air compressor 1 ~ 2 sets (0.6 m3 / mm, displacement pressure of 60 ~ 80 n/cm3), pressure hose (available 3/8 "oxygen tubes), joint, spray pipe, tank and pressure grouting, 3 mm sieve, slurry hose, hose connectors, the spray gun.
Roller coating used in all kinds of decorative pattern of the rubber roll, loose scraper.
The mud used in playing the TuQi. And screens, VAT, grey spoon, measuring scales, wood float, iron float, chalk line package, frame, cloth, and black tape, wood by feet, feet, big bar, water brush, combination brush pen, etc.
2.2 operation conditions:
2.2.1 doors and Windows must be installed according to the designed position and elevation in advance, and check whether the installation is firm, the cracks around the hole wall is in line with the requirements.
2.2.2 metope and waterproof node should be processed at the grass-roots level, complete the storm sewer pipelines, equipment capacity wall embedded installation work, and the mouth of the cave with cement mortar screeding, windowsill, dry.
2.2.3 scaffold had better choose double exclusive shelves, hanging basket or activity, metope can not leave a foot hand-eye; Scaffolding poling is apart from wall not less than 50 cm, from wooden wall not less than 20 cm, scaffolding step higher and exterior frame of the best suitable height.
2.2.4 according to corresponding mechanical construction need ready in advance, and in advance of commissioning power supply is connected.
Spraying with the air compressor (2) 0.6 m3 / mm, 3 mm sieve, a spray coating with two fights, high pressure trachea several meters.
The mud with cylindrical shells TuQi, according to the need to prepare several machines, high pressure trachea several meters.
Several roller roller coating.
2.2.5 spray, roll in advance according to the requirement of design, the example of the mud, and the appraisal should comply with the requirements.
2.2.6 ahead of time do not spray, do not play parts of a block, and should be ready to cover more boards. Set aside.
2.2.7 operation temperature is not lower than + 5 ℃ of the construction site.
3 operation process
3.1 process:
Metope processing at the grass-roots level to play lines, frame, the article stick - mixing layer material - spraying (roller coating, coating) - >
The article divided the to tick off seam, curing
3.2 basic level processing: precast concrete external wall plate for grassroots, prior to its lack of edge horn of floor uneven brush water wet, the mend brush water blending 10% heavier 107 rubber cement, then wipe induce wipe flat 1:3 cement mortar, waterproof and the seam. Tank after serious processing, get wet in the rain test, no leakage before the next working procedure.
For brick and aerated concrete wall at the grass-roots level, the grassroots of cast-in-situ concrete wall plastering, should be executed according to the outer wall plastering cement mortar process. It is should pay attention to the following:
3.2.1 mortar surface elevation of the bottom control: with the underlying mortar, leave the surface should be 12 mm thickness, by considering surface plastering cement mortar, 8 mm thick, spray, roll, play 2 ~ 4 mm thick.
3.2.2 surface coating is different, have different requirement about the quality of the cement mortar layer.
3.2.2.1 spraying: cement mortar big bar, leveling wood float rub flat, surface without holes, sand holes, color uniform on the surface, no scratches.
3.2.2.2 roller coating, the mud: cement mortar for big bar, leveling surface without holes, wood float rub flat, light iron float voltage, after being no MingShui, with a soft brush dips in water straight down, brush again, requirements on the surface of the same color, no lines, brush grain is consistent.
3.2.2.3 frame according to your drawings, lines, and on the basis of nuiko frame width and depth chose, stick a position to give an accurate, horizontal rows.
3.2.2.4 spray, roll, mud by construction, should be don't need the part of the application of good shade, prevent the pollution.
3.2.2.5 construction method, it is best to first base, by covered with cement mortar, and with the wipe with maintenance, falling with the shelves, and keeps on it, will again rise, shelf from the top to spray coating, rolling, playing under construction, in order to make sure the color of the coating.
3.3 material:
3.3.1 will cement the sifted, bagging and set aside.
3.3.2 rainfall distribution on 10-12 stone chips (or medium and coarse sand), paint a wire netting screen respectively, stone chips for larger particles, should be 3 mm screen, and then respectively according to the heavyweight match, bagging for standby.
3.3.3 according to the proportion of the ingredients, have the specialist is responsible for the control.
3.4 surface:
3.4.1 track spraying layer:
3.4.1.1 mixing mortar: use a small mechanical mixing barrel, according to the requirements of the coating increases with the increasing mix with cement mortar. To cement and stone chips (or sand) press 1:2 (volume ratio) dry mix evenly, add water 10% of the 107 glue solution mixing evenly, make its consistency of 11 cm, and mixed with cement in mortar to the weight of 0.3% of calcium powder, mixing evenly, repeatedly color should be in accordance with the sample preparation.
3.4.1.2 reserve according to the original frame of the location, the original article frame again.
3.4.1.3 spraying: hot, dry season, sprinkling water should be wet before spraying, start the air compressor, check the high pressure gas pipelines leakage, and its pressure stable at about 0.6 MPa. Spraying, the spray gun nozzle should be perpendicular to the wall, and leave the metope of 30 to 50 cm, infuse slurry spray pipe and start the trachea switch, the slurry with high pressure air injection to the wall. If spraying pressure have change, can be appropriately adjust the distance between the nozzle and metope. Granular spraying generally twice survival, for the first time uniform spray, thickness in 1.5 mm or so, the l ~ 2 h to spray on the second time, and make it spray. For spraying color is consistent, uniform particles, not out of pulp, thickness, total thickness control in 3 ~ 4 mm.
Spend wavy spraying and spraying: general control three times. First pass at the grass-roots level becomes angry, don't too thick coating, such as wall, can be after spraying coating with wood float rub flat, heavy spray; Second time spray to the bottom cover, pulp flow; Pulp out third time sprayed to the surface, the surface of the wavy, mortar full, do not flow, color is consistent, the total thickness of 3 ~ 4 mm.
Take the coating is in wave coating on the surface of stay after the dry, spray a spend according to design requirements, in order to increase the surface texture.
3.4.1.4 article up, repair, tick off seam: spray after the article will be divided up out in time, and will be clean, seam jointing according to the design requirement.
Spray 3.4.1.5 organic silicon: survival after 24 h, spray evenly on the surface of a layer of organic silicon agent, spray evenly, not flowing.
3.4.2 roller coating layer:
3.4.2.1 material mixing: roller coating mortar mixing ratio is 1:1:0.2, commonly known as: arenaceous = 1:1 volume ratio, cement and mixed with cement weighs 20% of 107. Particular way is: going yarn tension screen, sand and cement according to the volume 1:1 match well, dry mix evenly, and then use water aqueous solution of 20% of the 107 glue mixing, consistency is like sesame paste, pull the hair to flow, falling advisable, mixing good polymer cement mortar, should be used after vibrating screen.
3.4.2.2 sticky frame: according to the original render leave a position, to stick good article frame.
3.4.2.3 roll: roll should grasp at the bottom of the dry humidity, water absorption faster should be appropriately when adding water wet, water quantity with roller coating without flowing advisable, two people cooperation during operation, a person will be mixed in advance before thin mortar again, then wipe with a thin layer, use iron float slicked down, uniform coating thickness; Another man followed with roll roll, otherwise couldn't pull the wool to after dry, when the roll running too fast, and the strength should be consistent, survival when the roll should be down, to get out of the decorative pattern of natural down to the water waves, in order to reduce dust wall area.
3.4.2.4 article, tick off seam: roller coating finish the article frame, if you want to do Yang Angle, should be carried out in a large area after the live.
3.4.2.5 spray silicone to add water: 500 g organic silicon with 4500 g water mixing evenly, room temperature 24 h after injection of organic silicon roller coating, spray quantity depends on its surface humidity, if it rains within 24 h after injection, wash it will surface, reach due effect, must be heavy.
Rule 3.4.3 bomb overlay:
3.4.3.1 with bottom paste (weight ratio) : ordinary cement, 100, 20, 90107 glue water paint with model; 13, white cement, 100, 80107 glue water paint with the template.
3.4.3.2 color matching point pulp (weight ratio) : cement, 100, 40, 107 glue, paint with the sample, according to the above mixture ratio, mix paint and glue mix, pour cement, mix into a slurry.
3.4.3.3 article stick divided according to the requirements of design.
3.4.3.4 brush bottom paste: paste brush will have good bottom to cement mortar on the surface has been prepared in construction of large area can use spray coating, spray evenly so far.
3.4.3.5 play take pulp: will have matched with good color slurry injection cylinder elastic device, then turn the elastic flat handle and the color points pulp jilt the paste; Spring color paste, should be according to the different load respectively different elastic device, each operating a cone, flow process, namely the first person to play the first paste, another man then to play another kind of paste. Color points to play even, foil consistent with each other, play granular paste point should approximate circle.
3.5 winter construction: in the early winter period construction, should not be cold phase construction.
3.5.1 track of winter should use hot water mixing, plastering mortar and insulation measures, not straight when daub mortar temperature below + 5 ℃.
3.5.2 early hardened mortar plastering layer may not be cold, spray coating, rolling, playing before hardening should not be cold.
3.5.3 air temperature is below 5 ℃, outdoor plaster mortar can be added to reduce the freezing temperature of salt and calcium chloride, its content is determined by the design. Surface spray, rolling, playing, additive dosage and varieties should be determined based on the test.
3.5.4 with freezing method of masonry walls, outdoor rendering should be to defrost completely before rendering them, may not be washed with hot water freezing wall, or eliminate the frost on the wall with hot water.
2.6.2 early seas, to prevent the ash layer plastering mortar shall not be mixed with white plaster, to increase the workability of mortar, the volume can be used with the fly ash to replace.
4 quality standards
4.1 ensure project: varieties, the quality of materials must comply with the design requirements; Between various plaster and plaster between layer and the substrate must be bonded firmly, no delaminating, empty drum and cracks and other defects.
4.2 the basic items:
2 spraying, roller coating, elastic coating, surface consistent color decorative pattern, color dot size uniform, if not explicitly, no coating, gone and leakage flow.
Article 4.2.2 frame (seam) uniform, width and depth of the article (seam) level off is smooth, the edges tidy, horizontal flat vertical and smooth.
Holdings of the water slope to the right, drip line straight, throating depth and width are not less than 10 mm, and uniformity.
4.3 allowable deviation project, see table 9-9.
Spraying, roller coating, mud by allowable deviation table 9-9
Will project allowable deviation check method (mm)
1 vertical facade 5 2 m line board check
Surface is flat and level 4 2 m by feet and wedge feeler check
Three Yin and Yang Angle vertical 4 2 m line board check
4 4 20 cm square chi Yin and Yang Angle founder and wedge feeler check
Article 5 divisions (joint) straight line 3, 5 m, less than 5 m on line inspection
5 finished product protection
5.1 before construction should be spray, roll, will not play with the doors and Windows and wall protection cover.
5.2 spray, roll, after completion of the mud, with boards will mouth, Angle to safeguard, in time to prevent the damage of collision.
5.3 open shelf fight touch damage of wall surface coating.
5.4 oil engineering construction, it is strictly prohibited to stamped on has finished construction site, and prevent the tank knocked off, metope paint pollution.
5.5 interior construction, to prevent pollution of the spray, rolling, coating surface layer.
5.6 the balcony, rain cover outlet as appropriate USES rigid plastic pipe buried, best don't iron pipe, prevent rusting on the surface of the.
6 should pay attention to quality problems
6.1 uneven color, secondary repair if obvious: the main reason is that of master, mixed charging uneven; Spray, rolling, playing technique is differ, or different coating thickness; Adopt single exclusive frame construction, along with the open shelves, along with the foundation hand-eye, fill with plaster, with spray, rolling, playing, live with the original floated coat for repair after ash water cut is differ, if obvious surface caused by secondary repair. Solution: shall master the mixture ratio, reasonable ingredients, measurement accuracy; Spray, rolling, playing surface appoint someone who's in charge of construction, construction technique, the surface thickness is consistent; Use of such methods of construction, it is forbidden to use single xenophobic shelf; If use double exclusive frame construction, also to ban to the strut by pressure on the wall, so as not to cause secondary repair, ash layer effect the beauty of the coating.
6.2 spray, roll, the surface of the empty drum and fracture: the main reason is that the underlying plaster no points, according to the requirement of cement mortar area is too large, drying shrinkage is different, can form an empty drum and cracking. Crack and surface cracking at the bottom of the empty, therefore, should render ash points according to the requirement of the drawings, in order to solve grey layer shrinkage crack.
6.3 bottom ash was uneven, or with obvious grain: mainly because spray, rolling, coating is thinner, the bottom ash headaches, want to through is cannot cover the cover to cover. Bottom ash is required after the good, should be to check for acceptance by the standard of cement mortar plaster jiaoyan, otherwise, the coating surface coating can't.
6.4 surface after if obvious: the main reason is that road surface construction article set will be if the son in the compartment or inconspicuous place, but the unplanned disorderly jilt if, if the obvious surface coating. Solution: to jilt if among construction, must take if the son to frame joint, expansion joint, or after tube inconspicuous place, it is strictly prohibited to jilt to rub in the piece; In construction of secondary pick if pay attention to the coating thickness, avoid coating overlap, form a two-tone.
6.5 construction when the color is very good, band polluted: causes the coating color is bad, the wind, rain, sun color change, make a stern test for severe pollution, not ShouKan. Solution: use ultraviolet resistance, anti-aging, light resistance of paint, construction, strictly control the adding water. Midway can't just add water, in order to make sure the same color; In order to prevent the pollution of the surface, in 24 h after injection silicone coating finish. And pay attention to the organic silicon coating thickness is consistent, prevent flowing or too thick, form sense.
7 quality records
This technology standard should have the following quality records:
7.1 the material of raw material certificate and test report.
7.2 the cement factory.
7.3 additional materials such as adhesives, admixture factory certificate.
7.4 quality inspection records.
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