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How to do stone care in winter?

时间:2021-01-29 09:27:46  来源:  总浏览:726   字体:16px | 14px | 12px

The weather is getting colder and colder. For stone care workers, outdoor operations have basically stopped. The ongoing care operations have encountered some problems, such as protective construction, poor recrystallization treatment effects, and freezing and thawing.

 

Low temperature in winter directly affects the effect of protective construction:

Stone care in winter often requires protective construction, such as waterproofing and pollution prevention. The painting protection operation requires a suitable temperature, because the stone needs to be kept in good health after the protection painting, so that the protection can play a real role.

 

At room temperature and humidity within 70%, it takes 48 hours for protection and health. And every time the temperature drops by 10 degrees, the time of protection and health needs to increase by 2-4 times. Because it takes too long to maintain health, it is not recommended to carry out protective construction in the cold winter, especially in the environment below 0 degrees.

 

Low temperature can also cause freezing and thawing of stone:

The phenomenon of freezing stone cutter and thawing is that when the stone is cold in winter, the inside or the periphery of the stone cracks are frozen, resulting in expansion. The stress caused by the freezing of water in the pores of the stone is one polishing machine of the reasons for the cracks of the stone. Those who understand the principles of physics flaming machine and chemistry know that the smaller the pore diameter of the stone, the lower the vapor pressure of the water in the pore and block cutter the lower the freezing point. In some extremely fine pores, the freezing point of water can drop by tens of degrees Celsius. Therefore, the stone with smaller pores is not easy to be damaged by freezing, and the stone with bridge cutter larger pores, such as magnificent and golden beige, is easy to be damaged by freezing.

 

In order to avoid and reduce the damage to the surface of the stone by freezing and thawing, we must take precautions in advance for the stone that often encounters water indoors and outdoors to prevent the stone from inhaling a large amount of water and causing the stone to freeze.

 

It is necessary to prevent the influence of snow melting agent on stone in snowy days:

After snowing, in order to prevent slippery roads or to remove snow quickly, industrial snow melting agents are often sprayed on the road. Snow melting agent is a chemical agent that can lower the melting temperature of snow and ice. Its main ingredients are potassium acetate and chloride. Commonly used snow melting agents are generally low-priced chlorine salts, which are corrosive to asphalt roads to a certain extent.

 

The snow-melting agent thrown on the road is brought to the stone floor of the building hall by pedestrian shoes, which will corrode the stone floor and cause the ground to lose its light. In response to this situation, we need to lay the outdoor wiper mat in advance, and the indoor stone floor should also be laid with absorbent mats to make a defense system. After the ice and snow melt, clean the floor of the hall in time, remove the residual snow melting agent, and do a good job of crystallizing and polishing the stone surface.

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