The laying sequence of inclined flue fireclay bricks should be inspection and filling of main walls, single walls, chute openings and expansion joints.
When the builder lays the first layer of fireclay bricks on the inclined flue, it should be noted that the center line should be used as the reference when laying, and the position line of the inclined flue should be drawn first, and then the fireclay bricks should be laid. At the same time, the elevation and position lines need to be consistent throughout and cannot be relaxed until the lower clay bricks are built. In addition, in order to prevent fireclay brick joints from cracking or stepping on them, builders should lay springboards for protection during masonry. When laying roof bricks, the refractory mud extruded from each layer must be cleaned.
When the fireclay bricks are laid to the opening of the chute, it is necessary to check the size of the chute opening one by one, and to clean the opening of the masonry chute layer by layer, and it is necessary to carefully point the joints, and at the same time raise the level layer by layer. In addition, during the construction process, it should be timely Check for flatness and expansion joints. Only after passing the inspection can another layer of fireclay bricks be laid. When encountering a turning ramp, the expansion joint should be blown with compressed air, and then the filler in the expansion joint should be filled.
During the construction process at this stage, it should be noted that the height of the chute should prevent the horizontal joint from being too large or too small to prevent wrong bricks in the chute hole.
In addition, the filler in the expansion joints of fireclay bricks for inclined flues can also be sawdust, the surface can be covered with asphalt, or the filler can be cardboard, as long as it is flush with the thickness of the expansion joint. Of course it can also be filled with vinyl panels to ensure the size of the expansion joints. However, when laying fireclay bricks, the mud squeezed out from the expansion joints must be removed. If the upper and lower fireclay brick expansion joints are sliding joints, they can be filled with asphalt paper.
Before laying protective bricks in the inclined flue, the front line of the shoulder should be marked on the surface of the clay brick to mark the height of the main wall. Only negative deviations are allowed for the elevation of the protective plate. The elevation of the upper layer of fireclay bricks should also be strictly controlled, and each layer of bricks must not be staggered. And after the clay brick masonry of the inclined flue is completed, it should be cleaned thoroughly to keep the chute clean and smooth.
