1. Clean up the floating dust, oil and other debris and hollow parts on the concrete wall.
2. Remove the split concrete blocks, inclusions, hollow drums, etc. on the roof, and repair them again.
3. It is required that the surface flatness deviation of the ceramic fiber board should not exceed 4nm when it is adhered. When the tolerance is exceeded, the protruding concrete surface should be polished, and the concave part should be repaired (if the thickness of the repair is more than 6mm, use 1:2.5 cement mortar to plaster. , When the thickness is less than 6mm, polymer-bonded mortar should be used to make the correction); to ensure that the flatness of the entire wall is within 4mm, and the angles of yin and yang are square and smooth up and down.
4. The mortar used in construction is divided into special bonding mortar and special adhesive for high temperature surface layer.
5. The weight ratio of the mixed adhesive mortar is water: mortar = 1.5. Stir while adding water. The stirring time is not less than 5 minutes. The stirring must be sufficient, uniform, moderately thick, and have a certain viscosity.
6. After the mortar is prepared, let it stand for 5 minutes, and stir again before use. The mixed mortar should be used up within 1 hour.
7. In order to enhance the bonding force between the extruded board and the bonding mortar, before sticking the fiberboard.
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