The weather is getting colder and colder, for stone caregivers, outdoor operations have basically stopped, and ongoing nursing operations have encountered some problems, such as protective construction, poor recrystallization treatment, freeze-thaw phenomenon. So, how to do stone care in winter?
The low temperature in winter directly affects the effect of protection construction
Winter stone care, often need to carry out protective construction, such as waterproof treatment, anti-pollution treatment. The painting protection operation needs a suitable temperature, because the stone needs to be preserved after the protection painting, so that the protection can play a real role.
At normal temperature, the humidity is less than 70%, and the protection and health time takes 48 hours. For every 10 degrees drop in temperature, the protection health needs to increase by 2-4 times. Because the health takes too long, it is not recommended to carry out protective construction in the cold winter, especially in the environment below 0 degrees.
Low temperature environment affects the effect of stone recrystallization treatment
We know that stone recrystallization treatment is the biochemical reaction of the crystallization agent under the polishing of professional equipment, and the crystal lattice of the stone surface is restructured to form a stronger and more stable chemical composition. The chemical reaction requires a suitable temperature, and the effect and efficiency of stone crystallization at normal temperature is relatively good.
Stone care colleagues may have encountered this situation: the stone is paved with floor heating, and the surface is easy to dry when polishing, and it is not easy to throw out good results. In the cold north, the stone near the glass curtain wall is polished, and the effect of the stone surface is not available, mainly because the temperature next to the glass is low, which affects the chemical crystallization reaction of the stone.
Low temperature will also cause freezing and thawing of stone
The phenomenon of freeze-thaw is that when it is cold in winter, the stone gap inside or around freezes, resulting in expansion. The stress caused by water freezing in stone pores is one of the causes of stone cracks. People who know the principle of physicochemistry know that the smaller the pore diameter of the stone, the steam pressure of the water in the hole is correspondingly reduced, and the freezing point is decreased. In some very fine micropores, the freezing point of water can drop by tens of degrees Celsius. Therefore, the stone with small pores is not easy to be damaged by freezing, and some stone with large pores such as resplencent gold, golden flower beige, crack treatment is easy to be damaged by freezing.
In order to avoid and reduce the damage to the stone surface caused by freeze-thaw phenomenon, for the stone that often encounters water indoors and outdoors, we should do a good job of protective treatment in advance to prevent the stone from inhaling a lot of water inside, causing the stone to freeze.
It is necessary to prevent the influence of snow melting agent on stone in snow days
After snow, in order to prevent slippery roads or quick snow removal, industrial snow melting agents are often sprinkled on the road surface. Snowmelt is a chemical that can reduce the melting temperature of snow and ice. The main ingredients are potassium acetate and chlorine salt. The commonly used snow melting agent is generally inexpensive chlorine salt, which has a certain corrosive effect on asphalt.
The snowmelt agent thrown on the road is brought to the stone floor of the building hall by the pedestrian's shoes, which will corrode the stone floor and cause the loss of light on the ground. In view of this situation, we need to lay a good outdoor scraping mat in advance, and the indoor stone floor should also lay a good absorbent mat to do a good defense system. After the snow and ice melt, it is necessary to do a good job of cleaning the floor of the hall in time, remove the residual snow melting agent, and do a good job of crystal polishing the stone surface.
Stone is also alive. Into the winter season, we must put on the stone in time for the anti-freeze "coat".
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Jessie
Fortune East Stone
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