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粘土瓦烧成是通过粘土瓦在高温作用下,发生一系列的物理变化和化学变化,这些变化大致是:(1)由粘土中排除所有物理混合水及化学结合水;(2)各种有机混合物在一定温度下发生变化;(3)含在粘土中的炭酸钙分解,放出二氧化炭,变成氧化钙;(4)粘土的组成成分相互间发生化学作用,促使粘土中的铝、鉄、镁、钙、钾、钠与矽化合成为矽酸盐的新物质;(5)粘土失去可塑性和其他天然性质。虽加水亦不生可塑性,亦不能恢复原状,而变成另一种坚固的能抗冻抗折抗压的烧结物,即粘上瓦。
Clay tile firing occurs when a series of physical and chemical changes occur through the clay tiles under high temperature. These changes are roughly: (1) All physical mixed water and chemically bound water are excluded from the clay; (2) various organic The mixture changes at a certain temperature; (3) The calcium carbonate contained in the clay decomposes, releasing carbon dioxide and turning into calcium oxide; (4) The chemical components of the clay chemically interact with each other, promoting the aluminum and yttrium in the clay. , Magnesium, calcium, potassium, sodium and oximation synthesis of citrate new material; (5) clay lose plasticity and other natural properties. Although the addition of water is not plasticity, it cannot be restored to its original shape, and it becomes another strong sinter that can withstand freezing, bending, and compression.