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19

2020-03

What maintenance points should be paid attention to before and after the installation of culture stone

With the development of China's cultural stone industry, cultural stone is more and more recognized by people. More and more cultural stones are used in people's life. The culture stone itself is full of micropores (capillaries), and water invasion causes the disease of culture stone. Therefore, it is necessary to protect the cultural stone before construction. At present, our country's maintenance products are still in the early stage of development, and their technical performance is uneven, so we should be careful when selecting them. As for the protective agent, it is unscientific to use it in large quantities without asking "the black and white". The protective effect of cultural stone is related to the performance and quality of protective agent. The existing protective agents are divided into fluoride, organosilicon and resin acrylic according to the materials. The performance of fluoride organosilicon is the best, with strong air permeability, excellent permeability, chemical resistance and weather resistance, which can protect the cultural stone in an all-round way. In addition, the dryness of cultural stone also plays a decisive role in the protection effect of cultural stone. The cultural stone should be dried first, then coated with protective agent, and the effect will be better if it is dried thoroughly and then coated again. Otherwise, it will affect the protection effect. The process dosage of protective agent is an important index of the protective effect of cultural stone. Due to the different structure and pore size of cultural stone, the water absorption is different. Therefore, the determination of the amount of cultural stone protective agent can not be ignored. If the amount is less, the protective effect can not be fully reflected; if the amount is more, not only the consumables and labor costs, but also the aggregate accumulation on the stone surface will affect the appearance. Therefore, we must make a model test on the cultural stone to determine the process dosage. The best dosage is determined by moistening the fossil surface with protective agent until it is completely full. For the cultural stone treated with crystal, the surface of the cultural stone shall be treated with opening pores before applying protective agent; for the cultural stone that has been put into a and has not been used as protective agent, it can be protected with & ldquo; mend the past & rdquo; to prevent the cultural stone from pathological changes. In order to keep its bright appearance for a long time, in addition to reasonable installation, protection, cleaning and routine maintenance of cultural stone can not be ignored. It is believed that after such maintenance, your cultural stone will certainly improve its service life and value. Permeability protective agent can be divided into two types: solvent and water-based. Its protection principle is that the effective substance penetrates into the interior of stone with the solvent. After the solvent volatilizes naturally, the effective substance remains in the interior and surface of stone, forming a protective barrier to prevent the infiltration of external pollution and prevent the seepage of pollution in the interior and bottom of stone, so as to maintain the original appearance of stone and extend the service life of stone The solvent protective agent has strong volatility, flammability, pungent smell, and certain toxicity, so it is necessary to keep good ventilation during construction; while the water-based protective agent is an environmental protection type protective agent, colorless, non-toxic, tasteless, non combustible, and has no impact on the environment. Any kind of penetrating protective agent can not form protective layer on the stone surface.

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