1. Look at the use and handling of facing materials
The variety, grade, specification, shape, geometric size, finish, color and pattern of the facing brick should meet the design requirements. The stone needs to be firm, uniform in color, free from cracks, deterioration and discoloration, no water line or pollution, no warping on the surface, no Sand eyes. The tiles are free from defects, falling sand, holes, corners, cracks, etc., and the surface is square and the color is consistent. Adhesive materials, dry hanging accessories should meet the design requirements, carbon steel fittings need to be rust-proof. The base layer needs to be solid, clean, and of the correct size. Indeed; the cable inspection error should be less than 2 mm, and the flatness error should be less than 1 mm with a 2 m ruler.
2. depends on the quality of construction
It is required that the surface of the veneer layer should be smooth and clean, the texture is clear, the color is uniform and uniform, no warp is warped, and the hollow drum is pasted; the gap between the veneer blocks is uniform, the filling is dense, straight, and the color is consistent; the special part brick The block pressure is correct, the non-whole bricks are used properly, and the arrangement is straight; the protrusions are applied by the whole plate, the edges are consistent, neat and smooth, and the protruding thickness is uniform. The reserved hole size is correct and the edge is neat; the water flow slope is correct, the drip line is straight; when the corner angle is 45°, the angle is correct and the line is straight. The surface flatness error of the 2m ruler is less than 2 mm, the vertical error of the façade is less than 2 mm, the height deviation of the joint is less than 0.5 mm, and the flatness of the upper wall skirt is less than 2 mm.
3. It is necessary to find out and solve the quality defects. The following quality defects are likely to occur after the construction of the wall tiles. It is necessary to carefully observe and supervise the construction personnel to solve them in time.
1 color change. Mainly due to poor tile quality, glazed surface and improper construction methods. Tiles should be carefully selected during construction, and clean water should be used to soak the tiles. Pure cement mortar should be used for the paste. The mortar remaining on the brick surface should be cleaned at any time during operation. Tiles with large color differences should be replaced.
2 empty drums fall off. Mainly because the bonding material is not full, the brick is not soaked and the base layer is not clean. When the empty drum is produced, the wall brick should be removed for repair, the original bonding mortar should be shoveled, and the cement mortar added with the total volume of 3% qualified rubber should be repaired.
3 seams are not straight. Mainly due to differences in brick specifications and improper construction, such as seams exceeding the allowable error, it is necessary to remove the wall tiles in time and rework.
Acid Dyes Acid Orange II
red light orange. Golden yellow powder. Soluble in water is red light yellow, orange soluble in alcohol. The strong sulfuric acid for quality in red, dilute create tan precipitation; In a golden of nitric acid; In the thick of sodium hydroxide solution not dissolve. Its water solution with hydrochloric acid generation tan precipitation; Add sodium hydroxide solution brown. In dyeing copper ions trend dark red in colour and lustre of iron ion shallow and dark. Discharge the gender is good. Mainly used for silk and wool dyeing, widely used in wool dyeing, can be used for wool, silk and polyamide fiber fabric of direct printing, leather and paper color, can also be used in indicator and biological shading. Is tasted can be used as a food dye, heavy metal salt used in organic pigments.
Acid Orange II
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