The pouring sequence is generally from bottom to top and from left to right. After pouring, flat-fell seam and pouring C shall be treated in detail, and the formwork shall be removed after the cement mortar is solidified.
The manufacturing and installation methods of precast cement door and window covers are relatively simple. Just put the mold in a horizontal position, then pour the cement mortar into the mold, and take out the manufactured components after molding. When installing, you can add wall cement to the cement to make it stronger.
Extended data:
Matters needing attention
1, the door cover should be vertical, the decorative panel should be pasted flat and square, and there should be no big head and bell mouth.
2, wooden doors, window coverings, neat corners, tight joints, smooth surface, no gouges, burrs.
3. Marble should be used for the lower opening of the window cover to avoid blackening and deformation due to damp.
4. The door cover should be made of wooden frame, planed and straightened, and then assembled and installed on the wall to cover the base plate and decorative panel.
5. The material types, specifications and shapes of door and window covers should meet the design requirements. The moisture content of wood door and window cover material is not more than 12%. The limit of harmful substances in wood-based panels must comply with the relevant provisions of the current national standards, and a second interview should be conducted when entering the site. Door and window covers should be made of wood of the same tree species as door and window frames, and there should be no defects such as cracks, distortions and dead joints.
6. According to the design structure and material performance, choose the installation and fixing materials. Round nails can be used at the grass-roots level, and air nails, screws, adhesives, expansion bolts, etc. can be used at the surface layer.