A brief analysis of the construction technology of liquid granite coating on the outer wall

Abstract: Compared with natural granite material, granite coating is more construction, with greatly shortening the duration and reducing the cost of the project, this paper briefly describes the construction process and operation points of the construction characteristics of the granite coating on the outer wall.
0 Foreword
The development and progress of society make modern people's understanding of the surrounding environment continue to improve, love our earth, protect our health, return to nature this concept is more and more worshipped by modern people, the pursuit. How to make modern buildings not only maintain the natural, rustic, solemn natural granite decorative effect, but also will not affect the weight of granite and complex construction, safety and environmental protection, the birth of a new generation of building materials liquid granite coatings to solve this problem, for the architectural coatings industry a major innovation
1, construction features
liquid granite paint as the name implies is a decorative effect is completely similar to natural granite stone imitation stone paint. Mainly to synthetic resin emulsion as the base material, to different material diameter of natural sand and composite rock flakes and a small number of mica tablets as the raw material, additives and water preparation is the use of high-quality ultra-weather-resistant pure acrylic resin as the base material, ultra-weather-resistant inorganic pigments, imported additives and water, the application of a unique process refined from a Water-based environmental protection paint, with the following characteristics:
(1) coating effect of the pattern texture is strong, especially if the real granite stone, natural life, elegant style extraordinary, and according to different requirements sprayed out a variety of fancy effects, modeling patterns, colors, area size, texture is not limited, can be free to choose with.
(2) Because of the selection of ultra-weather-resistant resin, inorgeable pigments and hydroelestive mask paint, so that coated granite coating has good weather resistance, mold resistance, long service life, not easy to age, good adhesion, easy to clean, but also with long-lasting, can resist the wall fine cracks, excellent anti-staining performance, so that the wall long-term as new.
(3) construction is easy, construction speed is fast, construction methods are innovative and diverse, unique style is safe and simple, cost economy, low cost.
(4) product stability is good, granite coating all materials mixed evenly, no long time, large area can achieve easy construction without color achance
(5) system matching: external wall insulation as a system product, each layer of material must have compatible stability and performance complementarity, that is, a complete set of external wall insulation products reflect the overall system quality, but by no means a temporary combination of individual materials or single layer of material quality. Therefore, granite coating as a wall and external insulation system supporting the finish layer, can better provide customers with integrated system quality assurance.
(6) a wide variety of colors, unlimited combination of deployment, you can choose any color, for the building to add a modern atmosphere, artistic charm.
(7) compared with natural stone, its weight is light, will not increase the load pressure of the building, can be constructed on any substrate without the risk of falling off;2, construction process and operating points
2.1 operating conditions
(1) into the construction site of the granite coating series materials should be accompanied by factory certificate and related performance testing reports.
(2) grass-roots construction quality acceptance, should be flat, clean, no floating dust. Construction grass water content requirements less than 10%, pH<9, the new wall in good ventilation conditions in the summer should be dry 14d, winter should be dry 28d.
(3) large-area construction, operators should be in accordance with the predetermined construction process requirements in advance to do a model, after the design, construction supervision unit acceptance of a large area.
(4) doors and windows should be shielded from paint stains during construction.
(5) construction environment temperature is not less than 5 degrees C, it is strictly prohibited to work on rainy days.
(6) the main operators must be trained in the construction technology of this process, qualified before they can be on duty.
2.2 construction process
sail clean-up and repair→ full of flexible water-resistant putty twice→ roll-on special anti-alkali primer once→ bullet line, split, tape→ spray granite bone material again and again→ spray granite paint twice (roller or grinding) → brush water-based mask paint once.
2.3 Operating points
2.3.1 grass-roots treatment
remove grass surface dust and other adhesives, check for empty drum parts, and eliminate powdering, peeling, loosening parts, with putty to repair the surface of the hemp surface, holes, cracks. Woody grass should be flattened with woody sand. Renovation of the old wall, first to level the grass, remove loose, peel off the surface and dust scale and other impurities before construction.
2.3.2 full of water-resistant putty
(1) anti-cracking water-resistant putty powder before use, should check whether the packaging is broken, the material is not moisture-resistant block phenomenon.
(2) by powder: water : 1:0.5 to 0.8 weight ratio, first add water to the container, and then gradually add the powder, with an electric drill-type blender stirred evenly after half an hour to use.
(3) will be stirred well putty batch scraped on the grass-roots wall, each batch scraping thickness of 0.5 to 1.5mm is appropriate, should be thin should not be thick, repeated batch scraping should be carried out after the previous putty layer hard knot.
(4) dry grass or water absorption of the larger grass, the requirements of water spray wetting before the batch scraping (no water film after spraying, feel wet can be)
(5) in high temperature dry climate conditions, batch scraping putty need to spray water maintenance 2 to 3 times.
2.3.3 Water-based transparent anti-alkali primer
(1) primer's role is to strengthen the grass, enhance granite coating and grass adhesion, reduce and uniform grass water absorption, alkali and salt penetration migration play a closed role.
(2) to putty to meet the requirements after the use of wool rolling primer, anti-alkali primer rolling coating must be uniform, not excessive water, so that it completely covers the substrate, there must be no leakage phenomenon. Dust should be cleaned before brushing, and the roll should be kept clean.
2.3.4 spray granite bone material over and over again
wait for the special anti-alkali primer dry, spray granite bone again. When spraying, pay attention to control the viscosity of the original material is consistent, air pressure, nozzle size, distance, etc. should be consistent, to achieve the effect of uniform spraying.
construction of granite bone is more difficult, if the control is not good paint film easy to produce local flowering phenomenon. Therefore, when spraying pay attention to the gun and gun should not be finished on the wall of the positive spray, and the speed of the spray gun movement should be uniform, the edge of each spray range, to be sprayed in front of the amplitude edge repeat 1/3, and the width of the boundary should be consistent, to maintain the thin and uniform paint film.
2.3.5 spray granite paint twice
granite bone spray finished, not to dry immediately spray granite paint, paint film to meet the thickness requirements after the next process.
spray granite paint, immediately with stainless steel smear water gently flattened, so that the paint film smooth. Be careful to fill with water, otherwise there will be wrinkled, orange peel effect. Even force during the flattening process, gently apply pressure, to avoid the appearance of too much force uneven.
2.3.6 roll-on glossy paint
to be completely dry granite paint film, with a roll-on coating glossy paint. When construction, pay attention to maintain the viscosity of the paint consistent, rolling evenly, covering completely, non-leakage, and pay attention to prevent the phenomenon of hanging. 3, construction precautions
(1) paint should be stirred well before use, after use should be tightly covered.
(2) to ensure that the construction environment temperature is greater than 5 degrees C, relative humidity is less than 70%, no windy weather construction. Rainy days or rainy weather must not be construction, pay more attention to the weather forecast during construction.
3) after spraying granite paint, before hooding, to do a good job of rain protection, avoid heavy rain flushing, such as granite paint dry as soon as possible after the cover.
(4) construction environment requires clean, dust-free, should avoid rain, snow, fog, frost days before and after and when the wind blows sandy construction of the outer wall.
(5) use the tool to clean it in time and keep it safe.
(6) construction, scaffolding should be about 30cm from the wall, such as too close, the upper and lower scaffolding between the spray part may have joint marks, affecting the decorative effect.
(7) in the construction process, to ensure the pressure of the spray gun and air compressor long-term air supply stability. 4, safety measures
(1) primer, cover paint is flammable dangerous goods, construction should be strictly prohibited fireworks.
(2) construction should be accompanied by face protection equipment, if accidentally stained with eyes, skin, should be promptly rinsed with water.
(3) anti-crack water-resistant putty powder is weak alkaline, non-toxic, because the powder may cause minor irritation to the skin, can be applied with glycerin or moisturiser skin can
(4) construction operation must be fastened seat belt, its seat belt must be qualified products, and before use to check that the seat belt is intact. The safety buckle is fixed to the safety rope, which must not be connected to the basket frame.
(5) cannot drink at work or at work.
when using the spray gun at high altitudes to avoid injury.
(7) the use of hanging baskets above the five-level wind. 5, environmental protection measures
(1) to strengthen the training and education of field personnel, improve the environmental awareness of field personnel.
(2) into the site of the material, according to the site planning neatly stacked, clearly marked.
(3) paint buckets and bags should be recycled in a timely manner and should not be discarded at will.
(4) to putty, paint and other relics, should be cleaned up in a timely manner. 6, conclusion
The construction technology is widely applicable, can be used in concrete or cement internal and external walls and brick walls, such as concrete surface, wood, gypsum board polyurethane foam plate, mortar surface, metal plate, GRC, FRP Roman column, external insulation and other substrates and arts and crafts, urban sculpture and other old wall construction. As long as there is a reliable construction frame, the spray height is not limited. Through simple spraying or batch coating, on the surface of the building to form a similar to the natural granite material sense of the coating, giving people an elegant, harmonious, solemn beauty, to achieve vivid and realistic, return to the effect of nature.