[China Glass Network] 1. Grassroots cleaning. Clean up the floating ash, mold release oil and other debris and plastering hollow parts on the concrete wall surface, and repair them. The various holes in the outer wall are packed tightly. It is required that the surface flatness deviation of the bonded polystyrene board does not exceed 4 mm. When the deviation exceeds the deviation, the protruding wall surface is polished, and the concave portion is used for repair.
2. Wall measurement, elastic wire, hanging wire. According to the building façade design and external thermal insulation technical requirements, the horizontal and vertical control lines, telescopic lines and decorative stitches of the external doors and windows are popped on the wall. Vertical lines are placed at the corners of the building's exterior walls and other necessary places, and horizontal lines are placed at appropriate positions on each floor to control the verticality and flatness of the polystyrene board.
3. Paste the overturned mesh. All the exposed side of the pasted polystyrene board should be covered with a mesh cloth. The 80mm width of the mesh cloth not less than 200mm wide is firmly adhered to the base surface with a special bonding mortar, and the remaining mesh cloth is overwrapped when the polystyrene board is attached later.
4. Paste the polystyrene board. The standard size of polystyrene board for external thermal insulation is 600mm×900mm, 600mm×1200mm. Non-standard size or partial irregularity can be used to cut polystyrene board with smaller size over 300mm at the corner of the whole wall. The seams of the polystyrene board cannot be left at the four corners of the door window. Since the surface flatness of the base wall is not good enough, the point frame bonding method should be adopted. When the finish is a coating method, the bonding area is not less than 40%. Do not apply bonding mortar to the sides of the board. When arranging the plates, they are arranged in a horizontal order, and the upper and lower slats are pasted, and the yin and yang corners should be treated with wrong sputum Even if the bonding mortar overflowing from the edge of the board is clear when the board is stuck, there is no "collage gray" between the board and the board. The seam of the board should be tightly packed. When the seam width exceeds 2 mm, the polystyrene sheet of the corresponding thickness is used for filling. The height difference of the seam is not more than 1.5mm, otherwise it should be sanded or sanded with special sanding equipment.
5. The anchor is fixed. When fixing the polystyrene board with mechanical anchors, the anchor installation should be carried out at least 24 hours after the bonding mortar is used. The electric hammer is used to punch holes in the surface of the polystyrene board. The aperture is determined according to the diameter of the anchor. The depth of the wall should not be less than Design requirements. Screw in or knock in the anchoring nails so that the nail head and disc do not extend beyond the deck.
6. When the surface of the polystyrene board joint is not flat, it needs to be ground with coarse sandpaper lined with wood. The sanding action is required to be: gently rotate in the circumferential direction, and after brushing, remove the foam debris on the surface of the polystyrene board with a brush.
7. Wipe the bottom layer of mortar. After the polystyrene board is pasted and the anchor is finished, and the experience is accepted, the polymer mortar is plastered, and the polystyrene board is wiped with the bottom layer, and the tundish mesh is pressed into the mortar. The reinforced mesh cloth used at the four corners of the door window and the yin and yang corners is then pressed into the mortar.
8. Lay the mesh cloth. Tighten the mesh cloth and stick it on the underlying plaster. Use a trowel to press the mesh cloth into the surface of the mortar from the middle to the periphery. It should be flattened and compacted. The mesh cloth must not be pushed too deep. When the paving is overlapped, it must meet the requirements of the lap length of 100 mm in the horizontal direction and 80 mm in the longitudinal direction. Before the bottom mortar is condensed, wipe a matte mortar cover to cover only the mesh cloth and the micro mesh fabric. Do not stop the surface mortar to avoid the formation of empty drums.
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