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Code for dry hanging of curtain wall stone
Date：2019-12-12 09:20:00
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With the development of social economy and the improvement of city appearance, the scene of construction industry is also lively, which also drives the development of decoration industry. Stone curtain wall has occupied a considerable proportion in the external decoration of buildings. Gorgeous stone curtain wall really adds luster to the decoration of the city face, and also becomes one of the important signs of modern urban architecture. These gorgeous back can't lack all kinds of curtain wall auxiliary materials. Today, Xiaobian will talk about the application of one of the important auxiliary materials of curtain wall stone dry hanging specification dry hanging glue.
Stone dry hanging adhesive plays an important role in the specification of curtain wall stone dry hanging, and its quality directly affects the overall quality of the project. The state clearly stipulates that the "lifelong responsibility system" shall be implemented for the construction project, but the phenomenon of not conforming to the construction specifications is still occurring.
For a long time, in the process of dry hanging construction of stone curtain wall, some decoration companies still mistakenly use marble glue for bonding, which is actually a more dangerous practice. Although the marble glue has the characteristics of high hardness, polishing and fast curing, it is easy to penetrate the oil into the stone and affect the beauty of the stone because it has not been completely degreased. Relatively speaking, the marble glue changes greatly under the influence of the temperature, so it is not suitable for the construction operation under the condition of low temperature, and its bonding strength is also weaker than the stone dry hanging glue, especially for the wet and sunshine free The service life of the irradiated wall will be shorter and there is no safety guarantee. Seltzer marble glue can be used for construction at low temperature (- 10 ~ 45 ℃), but because of its inherent brittleness, it is suggested that construction enterprises should use seltzer marble glue to fix the stone initially and then use seltzer AB dry glue to fix the stone for a long time, so as to ensure the standard of stone dry hanging.
In 2001, China issued the specification of "epoxy adhesive for dry hanging stone curtain wall" (jc887-2001). According to the characteristics of stone curtain wall, 6 mandatory indexes are specified, and the quality indexes of adhesive for construction engineering and decoration engineering departments are specified. This is a favorable measure for the development of the stone curtain wall dry hanging industry, which makes the construction unit have a reasonable basis and evidence to test in the construction process, and points out the direction for the stone curtain wall construction to go on the right track in the future. In the construction process of dry hanging of stone curtain wall, stone materials weighing dozens of kilograms are bonded to the hanging parts with four or two sets of kilos of force. The quality of dry hanging glue is directly related to the installation quality and effect of stone materials. Therefore, we should follow the principle of seeking truth from facts. In the process of dry hanging construction of stone curtain wall, epoxy resin stone curtain wall dry hanging glue is used, with special performance The points are anti-corrosion, high temperature resistance, anti-aging, high strength and good firmness.
The properties of marble glue and stone dry hanging glue are different, so their uses are also different. Marble glue is used for bonding and repairing of stone materials. Its composition is unsaturated polyester, which belongs to the combination of steel. When it is used for dry hanging of stone materials, its advantage is that the curing time is easy to adjust. However, because the proportion of unsaturated polyester and curing agent is easily misadjusted, resulting in insufficient shear force, large stress, large displacement under the effect of temperature difference and vibration, it is easy to open Crack; and stone dry hanging adhesive is a special adhesive for stone and metal bonding. Its composition is epoxy resin, which is used by a and B combination. It is simple and clear in deployment, and belongs to flexible combination. It is oil-free and pollution-free. It has strong anti-seismic and twisting performance, small stress, and adhesive strength is not affected. Under the action of temperature difference and vibration, the displacement caused by expansion and settlement is small.
Precautions for dry hanging of stone:
1. If the bonding surface is too smooth, please polish and roughen it;
2. No heavy load is allowed at the beginning of curing;
3. The bonding surface shall be dry and not wet (moisture content shall not be higher than 15%), dust-free and oil-free, firm and not loose;
4. The sticking surface is too smooth and must be rough treated. The substances (paint on metal surface, floating rust layer, etc.) affecting the bonding effect of the bonding surface must be removed;
5. At low temperature in winter, the colloid can be heated to 30-40 ℃ for construction;
6. The adhesive parts beyond the effective time of construction cannot be moved any more. If they need to be moved, they shall be re glued and pasted;
7. If it is necessary to weld and install in the construction, the welding point shall be more than 3cm away from the adhesive paste;
8. The mixed glue cannot be returned to the barrel.
We must have a clear understanding of the use of marble glue and stone dry hanging glue, so as to ensure the quality and safety of stone curtain wall dry hanging project, and benefit the country and the people.
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Beijing Sarlsson New material Co,.Ltd.
Beijing Adress：Daxing Industrial Zone Beijing
Beijing Telephone： 13331021811 / 13331025578
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Bengbu Sarlsson New Material Co,.Ltd.
Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
Anhui Telephone： 0552-8698885 / 8698886 / 8698887
Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
Anhui Telephone： 0552-8698885 / 8698886 / 8698887
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Jiangxi Sarlsson New material Co.,Ltd.
Penggao Industrial Zone Shangli Country Pingxiang City Jiangxi Province
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