Waterproof coating construction process and characteristics

China Coatings Online News Information:(i) Polymer cement-based waterproof material
1 material
polymer cement-based (JS) waterproof coating is a polymer emulsion added additives made of liquid and cement as the main ingredient of the powder two-parts, according to the prescribed proportion mixing well, painted on the grass after curing formed waterproof layer. Polymer cement base (JS) waterproof coatings are divided into I. type, II.type, III. type, belong to the volatile curing type waterproof coating. This waterproof system is preferred to use in indoor environment without long-term bubble water, in roofing works can be combined with other materials.
2 Construction order
clean up and check the grass →smealing the grass →sealing the grass→ detailed component node processing→ Yin and Yang corner site additional layer construction→ brushing the first paint→ painting the second waterproof coating→ painting surface coating → coating quality inspection→ closed water test.
3 Construction points
(1) Clean up and inspect the grass-roots:
(1) waterproof grass to clean up, to ensure that the grass-roots oil-free, slag-free, debris-free, dust-free.
(2) Check the grass-roots: whether there are holes in the grass-roots surface, uneven bumps, through the floor of the pipe is dense, horizontal pipe to the base surface distance, whether the grass is loose and so on.
(2) repair the grass roots:
(1) grass-roots bump uneven, loose, hole and other phenomena, first the loose part, high part of the flat, and then with 1:3 cement mortar to find flat.
(2) If looseness occurs at the root of the grass root, the loose root should be removed cleanly and repaired with cement mortar or rigid leak-blocking material.
(3) If there is no arc in the yin and yang corner of the indoor waterproofing base, the polymerized cement mortar should be used.
(3) the treatment of the detailed structure of the waterproof layer
(1) the leakage of the ground or the surroundingof the pipe to fill the sealant;
(2) outstretched flat, facade pipe, the ground leakage perimeter, yin and yang corner of the part of the large surface waterproof layer should be painted before the construction of additional waterproof coating layer.
1) The width of the additional layer around the pipe: the height of the additional layer at the pipe site is not less than 100mm, and the width of the additional layer at the waterproof base area is not less than 200mm.
2) The width of the ground leakage additional layer is 300mm, the width of the additional layer extending into the ground drain is not less than 100mm, and the width of the additional layer around the leak is not less than 200mm.
3) The width of the additional layer at the yin and yang corner is 300mm, with the junction area as 150mm each 150mm between the middle and lower line.
(3) if the additional layer is designed with a mesh cloth enhancement layer, the mesh cloth should be soaked after laying, no crease phenomenon.
(4) waterproof paint brushing requirements:
(1) bottom coating construction:
ingredients:
by a person responsible for material preparation, operation, according to the requirements of the ratio of liquid, water poured into the mixing bucket, in the mixer constantly stirring the powder poured into the added bucket, stirring for at least 5 minutes, to stir well, slurry-free grain; When the construction of rolling brush or brush uniform brushing the bottom coating, not exposed, paint thickness of 0.2 to 0.3 mm, general interval of 8 hours, and coating curing and non-stick hands, in order to paint the next process;
(2) First paint construction:
by a person responsible for material preparation, operation in accordance with the requirements of the ratio of liquid, water poured into the mixing bucket, in the mixer constantly stirring the powder into the added barrel, stirring for at least 5 minutes, to stir well, slurry-free grain. Construction brush or brush uniform brushing the bottom coating, not exposed, paint thickness of 0.4 to 0.5 mm, general interval of 8 hours, and coating curing and non-stick hands, in order to paint the next process;
First paint construction: the use of roller brushes, brushes, rubber scrapers evenly painted the bottom of the paint, not exposed, the general material brush thickness of 0.4 to 0.5 mm, the coating is required to cure and non-stick hands, in order to paint the next process;
(3) Second or third paint construction:
by a person responsible for material preparation, operation, according to the requirements of the ratio of liquid, water into the mixing barrel, in the mixer constantly stirring the powder into the added barrel, stirring for at least 5 minutes, to stir well, pulp-free grain; Construction with roller brush or brush uniform brushing of the bottom coating, not exposed, paint thickness of 0.4 to 0.5 mm, general interval of 8 hours, and coating curing and non-stick hands, in order to paint the next process;
: paint construction requirements multi-brush (no less than three times), direct thickness requirements.
(5) Oscic quality inspection:
(1) before the closed water test to check the quality of the waterproof layer, paint waterproof layer can not have bubbles, layering, blocking and other phenomena
(2) closed water test, the paint must be cured before the end, so that non-stick hands, skin, corners and pipe root parts to dry through.
(6) closed water test:
after the waterproof layer curing, water storage for 24 hours, the water level is 2 cm above the highest point, with no leakage as qualified.
(7) Waterproof coating layer upper protective layer construction:
the first closed water test qualified, before the surface layer construction, requiring the protection of finished products, in the surface layer and protective layer construction must not damage the waterproof layer.
(8) Second closed water test:
protective layer or surface layer after construction, to carry out closed water test again, if there is leakage phenomenon must remove the protective layer to check the waterproof layer, until no leakage.
(ii) Acrylic acid waterproof coating construction technology
1 waterproof material
waterproof material is introduced. Acrylic acid waterproof coating is a volatile curing material, to rely on the volatile water to form a waterproof coating layer. This waterproof system is suitable for indoor environment without long-term bubble water, pure propylene acid waterproof coating system is adapted to the waterproofing project of metal roofing layer.
2 Construction order
clean and inspect the grass →scale the grass →sealing the grass→ detailed component node processing→ Yin and Yang corner area additional layer construction brushing →smearing the first paint→ painting the second waterproof coating→ painting surface coating →passing surface coating→ coating quality inspection→ closed water test.
3 Construction points
(1) Clean up and inspect the grass-roots:
(1) remove the surface layer and other structural levels of waterproof grass to clean up, to ensure that the grass-roots oil-free, slag-free, debris-free, dust-free.
(2) check the grass-roots: whether there are holes in the grass-roots surface, uneven bumps, through the floor pipe is dense, horizontal pipe to the base surface distance, whether the grass-roots loose and so on.
(2) repair the grass-roots
(1) grass-roots bump uneven, loose, holes and other phenomena, first the loose part, high part of the flat, and then with 1:3 cement mortar to find flat.
(2) If looseness occurs at the root of the grass root, the loose root should be removed cleanly and repaired with cement mortar or rigid leak-blocking material.
(3) If there is no arc in the yin and yang corner of the indoor waterproof base, cement mortar should be used.
(3) treatment of the detailed construction of the waterproof layer
(1) ground leakage or the surrounding of the pipe fill sealant;
(2) outstretched flat, facade pipe, ground leakage perimeter, yin and yang corner of the part of the large surface waterproof layer should be painted before the construction of additional waterproof coating layer, waterproof coating layer thickness of 1mm.
1) The width of the additional layer around the pipe: the height of the additional layer at the pipe site is not less than 100mm, and the width of the additional layer at the waterproof base area is not less than 200mm.
2) The width of the additional layer is 300mm, the width of the additional layer extending into the ground drain is not less than 100mm, and the width of the additional layer around the leak is not less than 200mm.
3) The width of the additional layer at the yin and yang corner is 300mm, with the junction as 150mm each between the middle and lower lines.
(3) additional layer parts are designed with mesh cloth enhancement layer, the mesh cloth should be soaked after laying, not wrinkle phenomenon.
(4) Painted waterproof paint
(1) the first time paint construction: the use of roller brushes, brushes, rubber scrapers even brush the bottom of the paint, not exposed, the general material amount of 1 kg /m2, coating thickness of 0.4 mm, the coating is required to cure and non-stick hands, in order to paint the next process;
(2) second paint construction:
use roller brush, brush, rubber scraper uniform brush bottom coating, not exposed, the general material dosing of 1.25 to 2.5 kg /m2, paint thickness of 0.5 to 1 mm, requires coating curing and non-stick hands, in order to paint the next process;
(3) third paint construction:
using roller brush, brush uniform brush bottom coating, not exposed, the general material dosing of 1.25 to 2.5 kg/m2, coating thickness of 0.5 to 1 mm, surface coating can be a small amount of water brush, so that the surface is flat and smooth;
: paint construction requirements multi-brush (no less than three times), direct thickness requirements. For every 1 mm of film, the coating is approximately 2.5 kg/m2.
(5) Surface quality inspection:
closed water test to check the quality of the waterproof layer, paint waterproof layer can not have bubbles, layering, blocking and other phenomena before the closed water test, the paint must be cured before the end, so that non-stick hands, skin, corners and pipe root parts to dry through.
(6) closed water test
after the waterproof layer curing, water storage for 24 hours, the water level is 2 cm above the highest point, to no leakage as qualified.
(7) Waterproof coating layer upper protective layer construction:
the first closed water test qualified, before the surface layer construction, requiring the protection of finished products, in the surface layer and protective layer construction must not damage the waterproof layer.
(8) Second closed water test:
protective layer or surface layer after construction, to carry out closed water test again, if there is leakage phenomenon must remove the protective layer to check the waterproof layer, until no leakage.
(iii) Single-group polyurethane waterproof coating construction
1 waterproof material
single-group polyurethane waterproof coating is to absorb moisture in the air and cure, no harmful solvent volatilization. The waterproof material should not be used in exposed environment, adapted to the basement, roof, toilet, pool and other long-term bubble water environment.
2 Construction order
Clean and inspect the grass →scale the grass →painting the grass→ detailed component node processing→ yin and yang corner parts of the additional layer of the construction brushing brush→ painting the first paint→ painting the second waterproof coating→ painting surface coating → (8) paint quality inspection→ closed water test.
3 Construction points
(1) Clean up and inspect the grass-roots
(1) after removing the surface layer and other structural levels of waterproof grass to clean up, to ensure that the grass-roots oil-free, slag-free, debris-free, dust-free.
(2) check the grass-roots: whether there are holes in the grass-roots surface, uneven bumps, through the floor of the pipe is dense, horizontal pipe to the base surface distance, whether the grass is loose and so on.
(2) repair the grass-roots
(1) grass-roots bump uneven, loose, holes and other phenomena, first the loose part, high part of the flat, and then with 1:3 cement mortar to find flat.
(2) if loose roots occur, loose grass roots should be removed clean, with cement mortar or rigid leak-blocking material for repair.
(3) If there is no arc in the yin and yang corner of the indoor waterproof base, it should be done with polymerized cement mortar.
(3) treatment of the detailed construction of the waterproof layer
(1) ground leakage or the surrounding of the pipe fill sealant;
(2) outstretched flat, facade pipe, ground leakage perimeter, yin and yang corner of the part of the large surface waterproof layer should be painted before the construction of additional waterproof coating layer, waterproof coating layer thickness of 1mm.
1) The width of the additional layer around the pipe: the height of the additional layer at the pipe site is not less than 100mm, and the width of the additional layer at the waterproof base area is not less than 200mm.
2) The width of the ground leakage additional layer is 300mm, the width of the additional layer extending into the ground drain is not less than 100mm, and the width of the additional layer around the leak is not less than 200mm.
3) The width of the additional layer at the yin and yang corner is 300mm, with the junction as 150mm each between the middle and lower lines.
(3) additional layer parts are designed with mesh cloth enhancement layer, the mesh cloth should be soaked after laying, not wrinkle phenomenon.
(4) Brush single-part polyurethane waterproof coating
(1) bottom coating construction:
with rubber scraper paint on the grass evenly scraped, the thickness is consistent, the thickness of the coating is 0.5 mm;
(2) second coating construction:
after the first material is fully cured (not less than 24 hours), and then carry out the construction of the second coating, with rubber scraper paint on the base evenly scraped, the direction is perpendicular to the first phase, the thickness of the coating is 0.5 mm;
(3) third paint construction:
after the second road material is fully cured (not less than 24 hours), and then carry out the construction of the third coating, with rubber scraper paint on the base evenly scraped, the direction and the second phase vertical, paint thickness of 0.5 mm;
: paint construction requirements multi-brush (no less than three times), direct thickness requirements.
(5) Quality requirements
(1) closed water test to check the quality of the waterproof layer, paint waterproof layer can not have bubbles, layering, blocking and other phenomena
(2) closed water test, the coating must be completely cured, do not stick hands, skin, corners and pipe root parts to dry through.
(6) Closed water test
(1) After the water-resistant layer is cured, water storage for 24 hours, the water level is 2 cm above the maximum point, to no leakage as qualified.
(2) after the construction of the protective layer or surface layer, the closed water test should be carried out again, if there is leakage phenomenon, the protective layer should be removed to check the waterproof layer, until no leakage.
(3) the first closed water test qualified, in order to carry out surface construction, requiring the protection of finished products, and then surface and protective layer construction must not destroy the waterproof layer.