Toilet, bath between coating waterproof construction
1 scope
The technology standard is applicable to industrial and civil building, toilet, bath between ground of polyurethane, chloroprene latex asphalt, SBS rubber modified asphalt waterproof coating material construction.
2 construction preparation
2.1 material and main equipments:
: 2.1.1 polyurethane waterproof coating is a kind of chemical reaction type coating, use in the form of a two-component, by component a and component b in accordance with the proportion coordination, produces chemical reaction, from a liquid into a solid, form a thick waterproof coating.
2.1.1.1 main materials:
Component: isocyanate base containing materials, with 3.5 + / - 0.2% advisable.
Component b: hydroxyl content, with 0.7 + / - 0.1% advisable.
Party a and b material flammable, toxic, are packed in iron drum, storage should be sealed, after approach in a cool, dry, no strong sunlight straight warehouses (or field). Operation should be according to manufacturer instructions to cooperate, the proportion of the operating site, ventilation, fire prevention, the operator should wear gloves, face masks, glasses, etc., to prevent solvent poisoning.
2.1.1.2 the main auxiliary materials:
Phosphoric acid or benzene sulfonyl chloride: too fast solidification, as a retarder.
Two lauric acid tin: slow solidification, used as coagulant.
Xylene: cleaning construction tools to use.
Ethyl acetate: gel with clean hands.
107 glue: repair at the grass-roots level.
Glass fiber cloth (90 cm in length, 14 eyes) or non-woven fabrics.
Stone slag: phi about 2 mm, bonding with transition layer.
Cement: more than 425 Portland cement and ordinary Portland cement and slag Portland cement, fill with at the local level.
2.1.1.3 polyurethane waterproof coating, must through the test can be used, its technical performance should meet the following requirements:
Solid content: 93% or higher;
Tensile strength: more than 0.6 MPa;
Elongation rate: 300% or higher;
Flexibility: around - 20 ℃ phi 20 mm round rods without crack;
Heat resistance: at 85 ℃. Heat 5 h, coating without flowing and concentrated air bubbles;
Impervious water: the dynamic water pressure 0.2 MPa constant-voltage lh impervious.
2.1.2 chloroprene latex asphalt waterproof coating: on the other hand, with polychloroprene emulsion wave and emulsified asphalt under certain conditions even after blending emulsion, dark brown pigment.
2.1.2.1 chloroprene latex asphalt must test before use, its technical performance should meet the following requirements:
Appearance: dark brown emulsion
Solid content; 43% or higher;
Bond strength: 0. 67 mpa;
Flexibility: - 10 ℃ phi around 10 mm round rods without crack;
Heat resistance: 80 ℃, 5 h no change;
Impervious: dynamic water pressure of 0.1 MPa, but the confining pressure of 0.5 h.
2.1.2.2 design requirements such as gabe, as in base coating glass cloth (90 cm in length, l4 mesh) or non-woven fabrics.
2.1.3 SBS rubber modified asphalt waterproof coating, asphalt, rubber, synthetic resin as the main raw material made of the other type of elastic asphalt waterproof material. Improved after adding SBS asphalt asphalt waterproof and elastic.
2.1.3.1 SBS rubber modified asphalt waterproof coating, can be used only before use should be qualified by test, and its technical performance should meet to plant requirements:
Appearance: black sticky liquid.
Solid content: 40% or higher;
Bond strength (and bond strength of cement mortar) : 0.3 MPa or greater;
Flexibility: in - 20 ℃ + 2 ℃ for the following round phi 3 mm metal rods and a half weeks, flake coating no crack phenomenon.
2.1.3.2 glass cloth (90 cm in length, 14 eyes) or non-woven fabrics.
2.1.4 major equipment: electric mixer, mixing materials barrels, paint bucket, plastic scraper. Small iron scraping board, rubber plate, spring balance, paint brush brush glue (use), rolling brush brush glue (use), small float, oil workers shovel knife, broom, fire fighting equipment.
2.2 operation conditions;
2.2.1 across the floor between lavatory bath all the vertical tube and casing have been finished and experience, the cracks around the pipes with 1, 2, 4 pisolite concrete tamping compaction (floor bottom need template).
2.2.2 cushion has been done on the ground, between lavatory bath to find 2% slope floor drain, thickness of less than 30 mm in the mixed ash, more than 30 mm thick with 1:6 cement cinder bed.
2.2.3 ground leveling layer has been done between lavatory bath, pressure surface should be smooth, solid flat light, no sand, moisture content is below 90% (simple detection: a 1 m2 at the grass-roots level surface with the rubber sheet, and let stand for 3 ~ 4 h, no obvious watermarking cover rubber parts, be deemed to have met the requirement of the moisture content).
2.2.4 leveling layer of the water slope should be in 2% above, not local water, and the wall of the junction and Angle are put into a small corner. Those who rely on a wall of tube root place to wipe out 5% slope, avoid the water (figure 7-10).
2.2.5 before making waterproof coating, at the grassroots level construction sealant seal (in the following parts. Through the floor around the riser, casing and riser junction, closet pan and the riser outlet around the floor drain, etc. As shown in figure 7-11, 7 to 12, 7 to 13, 7 to 14.
Figure 7-11 near the riser closure construction sealant figure 7-12 casing junction with the ground and the vertical pipe junction, sealing construction sealant
2.2.6 between lavatory bath must be set before making waterproof adequate lighting and ventilation equipment.
2.2.7 flammable, toxic waterproofing material to have fire prevention facilities and work clothes, soft shoes.
2.2.8 operating temperature + 5 ℃ or more.
2.2.9 operators should be trained, a card, do first between example, after inspection qualified can comprehensive construction.
3 operation process
3.1 polyurethane waterproof coating construction process:
Cleaning the grassroots to besmear to brush glue, detail additional layer to the first floor coating, and the second film
The third layer of coating film and debris
3.1.1 cleaning at the grass-roots level: stick with a shovel knife on the leveling layer of grey skin, use a broom to clean dust, especially the tube carefully clean up in areas such as the root, floor drain, and drain. If there is oil pollution, the application of steel wire brush and sand paper to brush off. Surface must level off, the cavity with a 1:3 cement mortar leveling.
3.1.2 brushing glue: a, b two polyurethane components and xylene in the proportion of 1:1.5:2 (weight ratio) and can be used. Dip in with a rolling brush or brush glue equably besmear to brush on the surface at the grass-roots level, may not be too thick nor thin, besmear brushs the amount to about 0.2 kg/m2. Should be dry after besmear to brush more than 4 h, can be a process of operation.
3.1.3 detail additional layer: the polyurethane coating waterproof materials according to the component a: part b = 1:1.5 the proportion of mixture stirring evenly, dip in with the paint brush paint at floor drain, pipe root, Yin and Yang Angle and outlet evenly, easy to leak weak positions may not leak brush (turn ground and metope, coating waterproof wall do 100 mm height).
3.1.4 first floor coating: polyurethane and xylene press 1: a, b two components l. 5: the ratio of 0.2 (weight ratio), in mixing materials barrels, using electric mixer, stir well (about 5 min) with a rubber scraper or a layer of paint, paint coating thickness should be uniform, coating amount to 0.8 ~ 1.0 kg/m2 advisable, from inside to outside the back operation.
3.1.5 the second layer coating: after the first layer coating, coating curing to not glue the hand, press for the first time the material ratio method, and the second time for coating operation, in order to make uniform coating thickness, coating direction must be vertical direction to that of the first pass coating, coating with the first time.
3.1.6 the third layer coating: after the second film cure, still according to the first two times the ratio of material mixing good coating materials, the scraping coat technique for the third time, amount of coating with 0.4 ~ 0.5 kg/m2 advisable, besmear after curing, not in the thin film surface and clean from 2 ~ 3 mm size of debris, to increase the cohesive force and the cement mortar layer.
In the process of operation according to the quantity of ingredients, operation shall not be stirred too much. Such as inconvenience when surface coating viscosity is too high, can be diluted with a small amount of xylene, addition amount shall not be greater than b is 10%. Such as a, b curing fast, after mixing effect construction, can add a little phosphate or chlorinated benzene sulfonic phenol retarder, addition amount shall not be greater than 0.5% of a material; Such as coating curing too slow, can add a little 2 lauric acid tin coagulant; But addition amount shall not be greater than 0.3% of a material.
The waterproof coating finish, can be carried out after the acceptance of storage test, 24 h, no leakage, surface can be performed.
3.2 chloroprene latex asphalt waterproof coating construction process:
Basic level processing and synthetic latex asphalt surface water putty to shave first pass coating, detail structure and strengthening layer - >
Stick spun glass cloth two times (or non-woven) at the same time to brush paint, brush coating to brush paint 4 times, third times water storage test
3.2.1 basic level processing: first check the basic unit of cement mortar screed-coat whether level off, the water slope meets the design requirements, the surface has a concave pit, with cement mortar leveling, with steel wire brush will be binding on the surface of plasma skin with flat shovel, finally use broom to sweep the dust.
3.2.2 grassroots putty scraping the neoprene latex asphalt cement: full will mix the neoprene latex asphalt waterproof coating in small barrel, mixed with a little cement mixing evenly, with scraping board will be full at the grass-roots level again. Tube root and the corner to thick and smooth.
3.2.3 first pass waterproof coating: according to the daily usage will chloroprene latex asphalt waterproof coating in small bucket pour remaining material when coming off work back to save VAT, prevent dry conjunctival influence use. Base chloroprene latex cement be bored with child after drying, then start spreading for the first time paint, paint brush or rolling brush dip coating with brush again, besmear brushs wants even, surface flow accumulation is not a phenomenon.
3.2.4 detail structure and strengthening layer: the Angle of Yin and Yang Angle do first a strengthening layer, the glass fiber cloth (or non-woven) the shop is stuck in these areas, and synthetic rubber latex paint brush to brush the asphalt waterproof coating. To paste it, brush, can not have crease.
Strengthen layer pipe root is also to do first. Glass cloth (or non-woven) can be cut into saw tooth, the shop is stuck on the surface casing, top into the sleeve, bottom paste it on the flat tube root, at the same time brush chloroprene latex asphalt waterproof coating, paste it, brush.
Floor drain, crouch hole and the part of the surface intersection do second strengthen floor first.
If metope is not waterproof, waterproof coating on the ground around the metope rolled up to 100 mm high, also do strengthen layer.
3.2.5 glass cloth (or non-woven), at the same time, and the second time brush paint: finish after detail structural layer, can undertake large area coating operation, the glass cloth (or non-woven) rolled into a cylinder, dip in with the paint brush paint, side brush, edge rolling glass wool roll (or non-woven), edge piping shop is stuck, and then use the brush to (or non-woven) rolling flat glass wool cloth, eliminate air bubbles, at the same time with the brush paint in the glass city prepared has (or non-woven), evenly on the glass cloth (or non-woven) solid bonding at the grassroots level, can not have leakage and buckling. General planar construction from low to high, according to the well summer-planting do from the doorway, first do after horizontal and vertical plane, glass fiber cloth (or non-woven) lap not less than 10 cm.
3.2.6 third time waterproof coating, after waiting for the second floor paint dry, brush with paint brush or rolling brush full third time waterproof coating.
3.2.7 the fourth times waterproof coating, after third time paint dry, with brush paint again, surface from a layer of coarse sand, try doing water after dry jun.
3.2.8 storage test: after the acceptance of waterproof coating, floor drain plug, water 2 cm high, time is not less than 24 h, and if no leakage is qualified, surface can be performed.
Neoprene hole of asphalt waterproof coating times and glass coating city (or non-woven) the number of layers, are to operate according to design requirements, can be reference to the above method.
3.3 the SBS rubber modified asphalt waterproof coating construction process:
Basic level processing and spreading the first time paint - 2 details a cloth - water test
3.3.1 basic level processing: with chloroprene latex asphalt coating.
3.3.2 rainfall distribution on 10-12 besmear first pass coating: paint brush dips in SBS rubber modified asphalt waterproof coating, full besmear again, after the first, the first after the high low, uniform besmear to brush, brush can not have leakage.
3.3.3 details: riser root, floor drain, crouch hole to the ground in areas such as the junction, all should carefully brushing the SBS waterproof coating, brush shall not leak.
Two we do a cloth: fiber glass cloth first rolled into a cylinder, dip in with the paint brush paint, brushes, while rolling, edge paste, with a paint brush cloth grinding flat at any time, eliminate air bubbles, glass wool, lap length not less than 5 cm (if need to shop on the second floor, to set up and down seam stagger), followed by paint brush in the spread of glass cloth on besmear brushs the paint again, until the glass cloth mesh is full of paint, brush paint shall not have died after folding, bubble, become warped edge and substrate, the shop is stuck to level off.
3.3.5 storage test: waterproof coating according to the design requirements after the coat, the quality qualified, water storage experiment was carried out, the temporary floor drain plug, wipe out the door place water, water storage 2 cm, observe no leakage for qualified for 24 h, surface can be performed.
4 quality standards
4.1 ensure projects:
4.4.1 coating used in a variety of waterproof materials, grades and mixture ratio, and the state should comply with the design requirements of the standard rules. Four indicators of waterproof coating technology performance must be qualified by the laboratory for the reinspection after just can use.
4.1.2 coating waterproof layer with detail such as embedded pipe, surface slope, should comply with the design requirements and construction norms, can not have leakage phenomenon (24 h observation without water leakage).
4.1.3 screed-coat moisture content is below 9%, and after inspection qualified, can undertake waterproof construction.
4.2 the basic items:
2 uniform coating, coating layer thickness meet the design requirements, never show. Strong protective layer and the waterproof layer binding, together, can not have damage.
4.2.2 glue and paint additional layer of coating method, receiving head, should conform to the requirements of the construction specification, bonded firmly, close together, joint seal, no empty drum.
Holdings surface such as found unqualified, should besmear brushs lap, according to the specification requirements and authenticated by the related personnel.
4.2.4 coating layer foaming, flowing, flat with no bump, color brightness is consistent, and pipe fittings, sanitary ware, anchor bolt, floor drain, the drain joint, head round.
5 finished product protection
5.1 coating waterproof layer in the process of operation; Shall not be pollution are ready to act the role of the wall, sanitary ware, doors and Windows, etc.
5.2 finish after coating waterproof layer, we will strictly protected, before cover do not make any personnel shall not enter, nor in the accumulation of debris inside toilet, so as not to damage the waterproof layer.
To prevent debris fill in 5.3 a floor drain or drain and ensure the drainage unblocked. Qualified water, don't forget to clean the floor drain.
5.4 surface during operation, to highlight the tube of the ground root, floor drain, drain, sanitary ware and ground junction coating shall not be damaged.
6 should pay attention to quality problems
6.1 coating waterproof layer empty drum, there are air bubbles: mainly basic cleaning not clean, or the bottom glue coating unevenness is due to the leveling layer wet, moisture content is higher than 9%, besmear before for moisture content test, empty drum, serious caused extensive bulge. So before besmear to brush waterproof layer, at the grass-roots level must be clean, and do the moisture content test.
6.2 ground surface finish after water storage experiment was carried out, there is leakage phenomenon: coating waterproof layer, after finishing the first water test must be made, if there is leakage phenomenon, according to specific parts of leakage repair, especially in all the rework, until the water 2 cm high, observing 24 h leakage so far. The ground surface finish, and then to the second time filling test, observe no leakage for the final qualified for 24 h, fill in water inspection record.
6.3 ground water drainage not free: the main reason is that when doing the ground pad, not according to the design requirements for slope, do no remedy measures when the leveling layer, cause adverse slope or uneven, and water. So before making a film waterproof layer, first check the slope at the grass-roots level is in line with the requirements, not in conformity with the design, should do waterproof after processing.
6.4 ground finish after the second impoundment, has qualified acceptance, but after the completion of use, crouch hole still appear leakage phenomenon: crouch hole to drain and sewage is mainly the socket outlet not connected closely, unused building sealant seal tightly after connection, cause leakage after use. In sanitary porcelain live after installation, the interface must be carefully checked whether meet the requirements, and then to next working procedure.
7 quality records
This technology standard should have the following quality records:
7.1 pu, chlorine latex asphalt, SBS rubber modified asphalt waterproof coating, must have the manufacturer certificate and waterproof material use certification issued by the Beijing municipal science and technology commission, the technical characteristics of the construction unit second-round exam test record.
7.2 waterproof coating inspection record, storage test record.
7.3 waterproof coating component project quality inspection records.
1 scope
The technology standard is applicable to industrial and civil building, toilet, bath between ground of polyurethane, chloroprene latex asphalt, SBS rubber modified asphalt waterproof coating material construction.
2 construction preparation
2.1 material and main equipments:
: 2.1.1 polyurethane waterproof coating is a kind of chemical reaction type coating, use in the form of a two-component, by component a and component b in accordance with the proportion coordination, produces chemical reaction, from a liquid into a solid, form a thick waterproof coating.
2.1.1.1 main materials:
Component: isocyanate base containing materials, with 3.5 + / - 0.2% advisable.
Component b: hydroxyl content, with 0.7 + / - 0.1% advisable.
Party a and b material flammable, toxic, are packed in iron drum, storage should be sealed, after approach in a cool, dry, no strong sunlight straight warehouses (or field). Operation should be according to manufacturer instructions to cooperate, the proportion of the operating site, ventilation, fire prevention, the operator should wear gloves, face masks, glasses, etc., to prevent solvent poisoning.
2.1.1.2 the main auxiliary materials:
Phosphoric acid or benzene sulfonyl chloride: too fast solidification, as a retarder.
Xylene: cleaning construction tools to use.
Ethyl acetate: gel with clean hands.
107 glue: repair at the grass-roots level.
Glass fiber cloth (90 cm in length, 14 eyes) or non-woven fabrics.
Stone slag: phi about 2 mm, bonding with transition layer.
Cement: more than 425 Portland cement and ordinary Portland cement and slag Portland cement, fill with at the local level.
2.1.1.3 polyurethane waterproof coating, must through the test can be used, its technical performance should meet the following requirements:
Solid content: 93% or higher;
Tensile strength: more than 0.6 MPa;
Elongation rate: 300% or higher;
Flexibility: around - 20 ℃ phi 20 mm round rods without crack;
Heat resistance: at 85 ℃. Heat 5 h, coating without flowing and concentrated air bubbles;
Impervious water: the dynamic water pressure 0.2 MPa constant-voltage lh impervious.
2.1.2 chloroprene latex asphalt waterproof coating: on the other hand, with polychloroprene emulsion wave and emulsified asphalt under certain conditions even after blending emulsion, dark brown pigment.
2.1.2.1 chloroprene latex asphalt must test before use, its technical performance should meet the following requirements:
Appearance: dark brown emulsion
Solid content; 43% or higher;
Bond strength: 0. 67 mpa;
Flexibility: - 10 ℃ phi around 10 mm round rods without crack;
Heat resistance: 80 ℃, 5 h no change;
Impervious: dynamic water pressure of 0.1 MPa, but the confining pressure of 0.5 h.
2.1.2.2 design requirements such as gabe, as in base coating glass cloth (90 cm in length, l4 mesh) or non-woven fabrics.
2.1.3 SBS rubber modified asphalt waterproof coating, asphalt, rubber, synthetic resin as the main raw material made of the other type of elastic asphalt waterproof material. Improved after adding SBS asphalt asphalt waterproof and elastic.
2.1.3.1 SBS rubber modified asphalt waterproof coating, can be used only before use should be qualified by test, and its technical performance should meet to plant requirements:
Appearance: black sticky liquid.
Solid content: 40% or higher;
Bond strength (and bond strength of cement mortar) : 0.3 MPa or greater;
Flexibility: in - 20 ℃ + 2 ℃ for the following round phi 3 mm metal rods and a half weeks, flake coating no crack phenomenon.
2.1.3.2 glass cloth (90 cm in length, 14 eyes) or non-woven fabrics.
2.1.4 major equipment: electric mixer, mixing materials barrels, paint bucket, plastic scraper. Small iron scraping board, rubber plate, spring balance, paint brush brush glue (use), rolling brush brush glue (use), small float, oil workers shovel knife, broom, fire fighting equipment.
2.2 operation conditions;
2.2.1 across the floor between lavatory bath all the vertical tube and casing have been finished and experience, the cracks around the pipes with 1, 2, 4 pisolite concrete tamping compaction (floor bottom need template).
2.2.2 cushion has been done on the ground, between lavatory bath to find 2% slope floor drain, thickness of less than 30 mm in the mixed ash, more than 30 mm thick with 1:6 cement cinder bed.
2.2.3 ground leveling layer has been done between lavatory bath, pressure surface should be smooth, solid flat light, no sand, moisture content is below 90% (simple detection: a 1 m2 at the grass-roots level surface with the rubber sheet, and let stand for 3 ~ 4 h, no obvious watermarking cover rubber parts, be deemed to have met the requirement of the moisture content).
2.2.4 leveling layer of the water slope should be in 2% above, not local water, and the wall of the junction and Angle are put into a small corner. Those who rely on a wall of tube root place to wipe out 5% slope, avoid the water (figure 7-10).
2.2.5 before making waterproof coating, at the grassroots level construction sealant seal (in the following parts. Through the floor around the riser, casing and riser junction, closet pan and the riser outlet around the floor drain, etc. As shown in figure 7-11, 7 to 12, 7 to 13, 7 to 14.
Figure 7-11 near the riser closure construction sealant figure 7-12 casing junction with the ground and the vertical pipe junction, sealing construction sealant
2.2.6 between lavatory bath must be set before making waterproof adequate lighting and ventilation equipment.
2.2.7 flammable, toxic waterproofing material to have fire prevention facilities and work clothes, soft shoes.
2.2.8 operating temperature + 5 ℃ or more.
2.2.9 operators should be trained, a card, do first between example, after inspection qualified can comprehensive construction.
3 operation process
Cleaning the grassroots to besmear to brush glue, detail additional layer to the first floor coating, and the second film
The third layer of coating film and debris
3.1.1 cleaning at the grass-roots level: stick with a shovel knife on the leveling layer of grey skin, use a broom to clean dust, especially the tube carefully clean up in areas such as the root, floor drain, and drain. If there is oil pollution, the application of steel wire brush and sand paper to brush off. Surface must level off, the cavity with a 1:3 cement mortar leveling.
3.1.2 brushing glue: a, b two polyurethane components and xylene in the proportion of 1:1.5:2 (weight ratio) and can be used. Dip in with a rolling brush or brush glue equably besmear to brush on the surface at the grass-roots level, may not be too thick nor thin, besmear brushs the amount to about 0.2 kg/m2. Should be dry after besmear to brush more than 4 h, can be a process of operation.
3.1.3 detail additional layer: the polyurethane coating waterproof materials according to the component a: part b = 1:1.5 the proportion of mixture stirring evenly, dip in with the paint brush paint at floor drain, pipe root, Yin and Yang Angle and outlet evenly, easy to leak weak positions may not leak brush (turn ground and metope, coating waterproof wall do 100 mm height).
3.1.4 first floor coating: polyurethane and xylene press 1: a, b two components l. 5: the ratio of 0.2 (weight ratio), in mixing materials barrels, using electric mixer, stir well (about 5 min) with a rubber scraper or a layer of paint, paint coating thickness should be uniform, coating amount to 0.8 ~ 1.0 kg/m2 advisable, from inside to outside the back operation.
3.1.5 the second layer coating: after the first layer coating, coating curing to not glue the hand, press for the first time the material ratio method, and the second time for coating operation, in order to make uniform coating thickness, coating direction must be vertical direction to that of the first pass coating, coating with the first time.
3.1.6 the third layer coating: after the second film cure, still according to the first two times the ratio of material mixing good coating materials, the scraping coat technique for the third time, amount of coating with 0.4 ~ 0.5 kg/m2 advisable, besmear after curing, not in the thin film surface and clean from 2 ~ 3 mm size of debris, to increase the cohesive force and the cement mortar layer.
In the process of operation according to the quantity of ingredients, operation shall not be stirred too much. Such as inconvenience when surface coating viscosity is too high, can be diluted with a small amount of xylene, addition amount shall not be greater than b is 10%. Such as a, b curing fast, after mixing effect construction, can add a little phosphate or chlorinated benzene sulfonic phenol retarder, addition amount shall not be greater than 0.5% of a material; Such as coating curing too slow, can add a little 2 lauric acid tin coagulant; But addition amount shall not be greater than 0.3% of a material.
The waterproof coating finish, can be carried out after the acceptance of storage test, 24 h, no leakage, surface can be performed.
3.2 chloroprene latex asphalt waterproof coating construction process:
Basic level processing and synthetic latex asphalt surface water putty to shave first pass coating, detail structure and strengthening layer - >
3.2.1 basic level processing: first check the basic unit of cement mortar screed-coat whether level off, the water slope meets the design requirements, the surface has a concave pit, with cement mortar leveling, with steel wire brush will be binding on the surface of plasma skin with flat shovel, finally use broom to sweep the dust.
3.2.2 grassroots putty scraping the neoprene latex asphalt cement: full will mix the neoprene latex asphalt waterproof coating in small barrel, mixed with a little cement mixing evenly, with scraping board will be full at the grass-roots level again. Tube root and the corner to thick and smooth.
3.2.3 first pass waterproof coating: according to the daily usage will chloroprene latex asphalt waterproof coating in small bucket pour remaining material when coming off work back to save VAT, prevent dry conjunctival influence use. Base chloroprene latex cement be bored with child after drying, then start spreading for the first time paint, paint brush or rolling brush dip coating with brush again, besmear brushs wants even, surface flow accumulation is not a phenomenon.
3.2.4 detail structure and strengthening layer: the Angle of Yin and Yang Angle do first a strengthening layer, the glass fiber cloth (or non-woven) the shop is stuck in these areas, and synthetic rubber latex paint brush to brush the asphalt waterproof coating. To paste it, brush, can not have crease.
Strengthen layer pipe root is also to do first. Glass cloth (or non-woven) can be cut into saw tooth, the shop is stuck on the surface casing, top into the sleeve, bottom paste it on the flat tube root, at the same time brush chloroprene latex asphalt waterproof coating, paste it, brush.
Floor drain, crouch hole and the part of the surface intersection do second strengthen floor first.
If metope is not waterproof, waterproof coating on the ground around the metope rolled up to 100 mm high, also do strengthen layer.
3.2.5 glass cloth (or non-woven), at the same time, and the second time brush paint: finish after detail structural layer, can undertake large area coating operation, the glass cloth (or non-woven) rolled into a cylinder, dip in with the paint brush paint, side brush, edge rolling glass wool roll (or non-woven), edge piping shop is stuck, and then use the brush to (or non-woven) rolling flat glass wool cloth, eliminate air bubbles, at the same time with the brush paint in the glass city prepared has (or non-woven), evenly on the glass cloth (or non-woven) solid bonding at the grassroots level, can not have leakage and buckling. General planar construction from low to high, according to the well summer-planting do from the doorway, first do after horizontal and vertical plane, glass fiber cloth (or non-woven) lap not less than 10 cm.
3.2.6 third time waterproof coating, after waiting for the second floor paint dry, brush with paint brush or rolling brush full third time waterproof coating.
3.2.7 the fourth times waterproof coating, after third time paint dry, with brush paint again, surface from a layer of coarse sand, try doing water after dry jun.
3.2.8 storage test: after the acceptance of waterproof coating, floor drain plug, water 2 cm high, time is not less than 24 h, and if no leakage is qualified, surface can be performed.
Neoprene hole of asphalt waterproof coating times and glass coating city (or non-woven) the number of layers, are to operate according to design requirements, can be reference to the above method.
Basic level processing and spreading the first time paint - 2 details a cloth - water test
3.3.1 basic level processing: with chloroprene latex asphalt coating.
3.3.2 rainfall distribution on 10-12 besmear first pass coating: paint brush dips in SBS rubber modified asphalt waterproof coating, full besmear again, after the first, the first after the high low, uniform besmear to brush, brush can not have leakage.
3.3.3 details: riser root, floor drain, crouch hole to the ground in areas such as the junction, all should carefully brushing the SBS waterproof coating, brush shall not leak.
Two we do a cloth: fiber glass cloth first rolled into a cylinder, dip in with the paint brush paint, brushes, while rolling, edge paste, with a paint brush cloth grinding flat at any time, eliminate air bubbles, glass wool, lap length not less than 5 cm (if need to shop on the second floor, to set up and down seam stagger), followed by paint brush in the spread of glass cloth on besmear brushs the paint again, until the glass cloth mesh is full of paint, brush paint shall not have died after folding, bubble, become warped edge and substrate, the shop is stuck to level off.
3.3.5 storage test: waterproof coating according to the design requirements after the coat, the quality qualified, water storage experiment was carried out, the temporary floor drain plug, wipe out the door place water, water storage 2 cm, observe no leakage for qualified for 24 h, surface can be performed.
4.1 ensure projects:
4.4.1 coating used in a variety of waterproof materials, grades and mixture ratio, and the state should comply with the design requirements of the standard rules. Four indicators of waterproof coating technology performance must be qualified by the laboratory for the reinspection after just can use.
4.1.2 coating waterproof layer with detail such as embedded pipe, surface slope, should comply with the design requirements and construction norms, can not have leakage phenomenon (24 h observation without water leakage).
4.1.3 screed-coat moisture content is below 9%, and after inspection qualified, can undertake waterproof construction.
4.2 the basic items:
2 uniform coating, coating layer thickness meet the design requirements, never show. Strong protective layer and the waterproof layer binding, together, can not have damage.
4.2.2 glue and paint additional layer of coating method, receiving head, should conform to the requirements of the construction specification, bonded firmly, close together, joint seal, no empty drum.
Holdings surface such as found unqualified, should besmear brushs lap, according to the specification requirements and authenticated by the related personnel.
4.2.4 coating layer foaming, flowing, flat with no bump, color brightness is consistent, and pipe fittings, sanitary ware, anchor bolt, floor drain, the drain joint, head round.
5 finished product protection
5.1 coating waterproof layer in the process of operation; Shall not be pollution are ready to act the role of the wall, sanitary ware, doors and Windows, etc.
5.2 finish after coating waterproof layer, we will strictly protected, before cover do not make any personnel shall not enter, nor in the accumulation of debris inside toilet, so as not to damage the waterproof layer.
To prevent debris fill in 5.3 a floor drain or drain and ensure the drainage unblocked. Qualified water, don't forget to clean the floor drain.
5.4 surface during operation, to highlight the tube of the ground root, floor drain, drain, sanitary ware and ground junction coating shall not be damaged.
6 should pay attention to quality problems
6.1 coating waterproof layer empty drum, there are air bubbles: mainly basic cleaning not clean, or the bottom glue coating unevenness is due to the leveling layer wet, moisture content is higher than 9%, besmear before for moisture content test, empty drum, serious caused extensive bulge. So before besmear to brush waterproof layer, at the grass-roots level must be clean, and do the moisture content test.
6.2 ground surface finish after water storage experiment was carried out, there is leakage phenomenon: coating waterproof layer, after finishing the first water test must be made, if there is leakage phenomenon, according to specific parts of leakage repair, especially in all the rework, until the water 2 cm high, observing 24 h leakage so far. The ground surface finish, and then to the second time filling test, observe no leakage for the final qualified for 24 h, fill in water inspection record.
6.4 ground finish after the second impoundment, has qualified acceptance, but after the completion of use, crouch hole still appear leakage phenomenon: crouch hole to drain and sewage is mainly the socket outlet not connected closely, unused building sealant seal tightly after connection, cause leakage after use. In sanitary porcelain live after installation, the interface must be carefully checked whether meet the requirements, and then to next working procedure.
7 quality records
This technology standard should have the following quality records:
7.1 pu, chlorine latex asphalt, SBS rubber modified asphalt waterproof coating, must have the manufacturer certificate and waterproof material use certification issued by the Beijing municipal science and technology commission, the technical characteristics of the construction unit second-round exam test record.
7.2 waterproof coating inspection record, storage test record.
7.3 waterproof coating component project quality inspection records.
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