marble formation and prevention of freeze-thaw

First, the freezing and thawing causes the formation of

    Freezing and thawing phenomenon occurs mainly in the north near the place where the weather is colder. When the marble pores, after absorbing enough water, once the temperature dropped to 00C below the marble in the water began to freeze, the volume to expand. When the ice is greater than the expansion of the structural strength of marble, the marble will produce fragmentation. This is the freezing and thawing phenomenon.

    In general, the material is to comply with "thermal expansion and contraction," the law, and the water just the opposite. Water density maximum at 4 ℃, the water molecules are independently mobile. Water from 4 ℃ to 0 ℃, the temperature decreased, the water molecules in ice are arranged in an abnormal pattern was loose three-dimensional granite, this structure is actually left a lot of "empty", the density has decreased. Experiments show that when the water freezes 1M3, its volume will increase to 1.11M3. So when the water enters the marble pores or cracks cold case after the ice, the volume increases, thus swelling the pores or cracks of marble, and then inhaling more water marble, or the gap is further swell the pores, so a vicious revolving, ultimately resulted in marble fragmentation.

    Second, the prevention of freezing and Limestone

    As the main factors resulting freezing and thawing of Slate, to prevent water entering the marble as long as we can prevent the occurrence of freezing and thawing. So, we'll just use marble curing agent deal with the marble on the line to do protection.