Clay brick in accordance with its porosity can be divided into:
1.Hollow brick: void ratio is equal to or greater than 40%, the size of the hole and a small number of bricks, commonly used in the non weight bearing area, low strength grade.
2.Solid brick: no holes or holes less than 25% brick;
3.Porous brick: void ratio is equal to or greater than 25%, hole size is small and the number of bricks, commonly used in load-bearing parts, high strength grade.
General clay refractory brick solid brick and porous brick load-bearing structure for wall, hollow clay brick refractory brick in a multi for non load bearing structure wall.
