The weather is getting colder and colder, and there are many stone problems that follow. Among them, the most common stone problem in winter is mainly freezing and thawing. This phenomenon mainly occurs in places close to the north or where the weather is relatively cold. So, how does stone freeze-thaw form? How to prevent it? Next, let's take a look with the editor of FABULOUS Group.
The cause of freezing and thawing
The main reason for the freezing and thawing of stone is because of one source-water. When the pores of the stone absorb the corresponding water, the water in the stone will start to freeze once the temperature drops below 0°C.
Generally speaking, substances follow the law of "heat expansion and contraction", while water is the opposite. The density of water is at its maximum at 4°C, and water molecules operate independently with mobility. When the temperature of the water decreases from 4°C to 0°C, the water molecules in the ice are arranged in a three-dimensional pattern into an unusually loose form. This structural form actually leaves many "voids", but the density decreases. Experiments have shown that when 1 cubic meter of water freezes, its volume will increase to 1.11 cubic meters.
Therefore, when water enters the pores or crevices of the natural stone, it becomes cold and freezes, and the volume increases, thereby swelling the pores or crevices of the natural stone. Then, the natural stone absorbs more water, and the pores or gaps are further enlarged. This vicious cycle Also, it eventually led to the fragmentation of natural stone.
Prevention of freezing and thawing
Regarding the freezing and thawing phenomenon, no matter what stone protection method is, the source is the main factor of freezing and thawing-water. We can prevent freezing and thawing as long as we prevent water from entering the stone. Therefore, for the freezing and thawing phenomenon of stone, it is necessary to take the method of pre-treatment, basically using stone curing agent to protect the stone.
After drying the stone, apply water repellent and other protective agents on the stone surface repeatedly and evenly. The purpose is to prevent moisture from entering the pores of the stone, which can completely prevent freezing and thawing.
The reason why stone protection is important is to make the stone healthier and to reduce or even eliminate the occurrence of stone disease. Environmental factors are inevitable, but we can artificially protect the stone. Freezing and thawing of stone is only one kind of stone problem, but stone protection can avoid many stone problems.