The construction of real stone paint is relatively simple, and it is widely used in exterior wall decoration engineering with good effect. However, in the construction process, due to the influence of external factors, there are still some quality problems. This paper introduces the advantages of stone paint for exterior walls, the construction technology of stone paint, analyzes the quality problems and control measures of stone paint for exterior walls of buildings, and provides reference for related projects.
1 Introduction
At this stage, under the background of the continuous development of social economy, the number of construction projects is increasing and the scale is expanding. In the exterior wall decoration construction, the real stone paint has been widely used, and constantly meet the living needs of people. A large number of practices have proved that the construction technology of real stone paint has better engineering benefits, can greatly improve the beauty of the building exterior wall, and its construction method is green and environmental protection, can reduce labor. In this paper, the scope of application, construction technology and quality control measures of real stone paint will be studied in order to improve the construction quality of real stone paint for external walls.
2. Advantages of stone paint for exterior wall: stone paint for exterior wall has the following advantages:
(1) The stone paint for exterior wall is suitable for spraying base coating such as glued formwork, gypsum board, cement mortar plastering surface and concrete surface. The sensory effect of the stone paint for exterior wall with hard texture can be comparable to that of granite;
(2) The real stone paint has high waterproof performance and acid and alkali resistance. When it is sprayed on the exterior wall, it is not only easy to clean, but also can prolong the use time of the building wall to a certain extent and slow down the aging speed of the wall;
(3) There are many varieties and rich colors of real stone paint, which can meet the needs of different exterior walls of construction projects and reduce the adverse effects of the external environment;
(4) The construction of real stone paint for exterior wall is less limited by buildings, which has higher environmental protection and energy saving benefits and higher application value compared with granite. All in all, in the process of practical application, the real stone paint should be selected reasonably based on the characteristics of the real stone paint and combined with the construction demand of the building exterior wall.
With the continuous development and progress of social economy, architecture is more and more seeking for external beauty, which needs complex exterior wall decoration to reflect, and the deepening of exterior wall decorative line coating is more and more essential. The deepened exterior wall drawings can greatly improve the convenience and accuracy of budget and construction. If you need to deepen, please scan the QR code below and contact the studio engineer wechat.
How to deepen / optimize the design of exterior wall thermal insulation coating project? The design process is here! Taobao platform announced
3 construction technology of real stone paint
The real stone paint is a kind of paint which is stirred by many kinds of materials. It is similar to granite and marble. It belongs to the thick paste paint. It has high beauty, high application value, and can achieve the purpose of environmental protection and energy saving. The real stone paint mainly adopts spraying method, and uses spray gun for construction. The construction process is relatively simple, mainly including base treatment and acceptance, bottom coating, wall drying, grinding, grid dividing, seam dividing, main coating real stone paint, pointing treatment and varnish on the surface layer, etc.
3.1 base course finishing and acceptance
Before the formal construction, the base course shall be optimized and accepted, which mainly includes the following:
(1) The surface is smooth and flat, without delamination, hollowing, cracks and other problems, and the surface construction effect is good;
(2) Water content control: generally, the water content should be controlled within 10%;
(3) The pH value should be less than 10. If the alkalinity is too strong, it will
3.2 in order to avoid the influence of the real stone paint by the corrosive substances in the wall, the primer construction shall be carried out before spraying the real stone paint. In addition, in order to highlight the characteristics of the imitation stone, the primer material shall be consistent with other paint colors. In the process of treatment, it should be based on the relevant provisions and specifications, and be carried out in strict accordance with the relevant specifications. In order to ensure the construction quality, it is necessary to primer twice and control the time. Generally, the time interval is about 2h, but it should also be adjusted according to the specific problems.
3.3 when the wall surface is dried and polished, the wall surface shall be dried and polished 24 hours after the bottom coating construction. In the process of polishing the wall surface, the sandpaper shall be selected in combination with the roughness and hardness of the wall surface. The sandpaper shall not be too hard to leave grinding traces, nor too thin to polish in place. The final effect of polishing shall be that the wall surface is flat and smooth. After the wall surface is polished, touch inspection can be carried out by hand.
3.4 the division and division treatment of the dividing joint shall be carried out in strict accordance with the relevant specifications. First, the location of the dividing joint shall be determined; second, according to the design size and pattern, the black dividing paint shall be used for separation, and the width shall be greater than the width of the dividing joint; finally, after the drying of the dividing paint, the paper tape with American pattern shall be pasted.
3.5 the construction of real stone paint for main coating is mainly carried out with the help of spray gun. Put the real stone paint into the spray gun and carry out the construction with the help of pressure. The spraying pressure shall be controlled within 0.4-0.8mpa. The spraying process shall be kept at a certain distance from the wall and be sprayed vertically. During the spraying process, it is necessary to ensure that the real stone paint is uniform and continuous, and no leakage is allowed. In addition, the spraying of real stone paint shall be carried out in layers, the first layer shall be sprayed quickly, and the second layer shall be sprayed steadily and slowly.
3.6 after the completion of pointing treatment and spraying, the pointing treatment and finishing treatment shall be carried out. The pointing treatment is mainly to deal with the separation joints. During the pointing process, it should be carried out carefully and ensure the evenness and straightness. At the same time, the bad wall surface shall be repaired. In case of falling off and damage, it shall be repaired in time. If the damage is serious, it is necessary to consider re spraying and ensure the aesthetics and integrity of the wall.
3.7 after finishing the above procedures, sufficient time shall be reserved to dry the real stone paint, and then surface treatment shall be carried out, especially in case of uneven surface color or gravel, treatment shall be carried out with the help of relevant tools, and then finish painting shall be carried out. When spraying, it is usually used in a transverse way. For some corners and edges that are difficult to spray, a small brush shall be used for treatment.
4 quality problems and control measures of real stone paint for building exterior wall
4.1 the main causes of soil layer cracking caused by coating cracking are as follows:
(1) The coating thickness of the real stone paint is large, which leads to weak adhesion;
(2) There are problems in the real stone paint materials;
(3) The construction temperature difference of the real stone paint is large, and the drying shrinkage speed of the inner and outer layers is inconsistent, resulting in cracking. In order to prevent the quality problems of coating cracking, first of all, strengthen the quality management of raw materials, prohibit the use of substandard products, and reasonably mix them to ensure the comprehensive performance of the real stone paint; second, strictly follow the construction process, comply with the relevant specifications, and improve the construction quality; finally, the size of the real stone paint block should be appropriate, and the size should not be too large.
4.2 color difference
Due to the influence of the weather, with the passage of time, the real stone paint is easy to be washed and faded by the rain or affected by the air pollutants, and the color becomes dark, resulting in color difference, affecting its beauty. In order to prevent color difference, we should start from the root and strengthen the material quality management. In the process of material mobilization, it is necessary to have the qualification certificate, product specification and test report, and at the same time, it is necessary to do a good job in testing. Materials shall be stacked in order, and sunscreen and waterproof work shall be done well. It is advisable to use high quality water-resistant materials to reduce the rain and yellowing and improve the service life of genuine lacquer. The color sand with low water absorption should be selected as the aggregate with reasonable grading.
4.3 obvious joint position
After the completion of the construction of real stone paint on the exterior wall of many construction projects, there are obvious problems such as joint, which affect the beauty of buildings. The main reasons include the following two points:
(1) In the process of material selection, there are differences in color;
(2) The facilities at the connection position are unreasonable, and the connection treatment shall be carried out at will. In order to solve the above problems, the construction personnel shall standardize the construction behavior and prohibit the stubble rejection at the obvious position; during the stubble treatment, the paint thickness shall be strictly controlled to avoid too obvious stubble; during the purchase process of real stone paint materials, the purchase shall be completed once to ensure the consistency of the material color. If there is a shortage of materials and there is a difference in the color of materials, the mixing treatment shall be carried out before construction.
5 Conclusion
To sum up, real stone paint is a kind of exterior wall decoration material. Under the current background of green environmental protection, energy conservation and emission reduction, real stone paint will flourish with its own advantages. In the construction process of real stone paint for building exterior wall, it is necessary to master the construction process and strictly follow the relevant process sequence, strengthen quality control, prevent quality problems such as coating cracking, color difference and obvious splicing, give full play to the application value of real stone paint, protect the exterior wall of building from environmental impact and erosion, and effectively extend the service life of the exterior wall of building.
Detailed design cases of the studio:
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Beijing project external wall insulation, EPS line deepening construction drawing design case
Detailed design of EPS line drawing for exterior wall decoration of a project in Tianjin
Detailed design of EPS line drawing for exterior wall of a community project in Hebei Province
Exterior wall insulation lecture: analysis of material properties and construction technology of various exterior wall insulation systems
Design case of facade (real stone paint joint) effect drawing of a high-rise residential project in Hubei Province
How to deepen / optimize the design of exterior wall thermal insulation coating project? The design process is here! Taobao platform announced
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