List of high-quality authors
Lightweight gypsum hollow slats and block partition walls
OneProcess flow
Structural wall, top surface, ground cleaning and leveling--pay-off, binning--boarding, repair--installation U-shaped card (when there are seismic requirements)--preparation of adhesives--installation of partition panels--installation of door and window frames--plate joint treatment--board decoration.
1. Clean the junction between the partition board and the top surface, the ground and the wall, and the mortar and concrete blocks protruding from the wall must be removed and cleaned, and the joint should be leveled as much as possible.
2. Pay-off and binning.
On the ground, wall and top surface according to the design position, play the edge of the partition wall and the edge of the door and window holes, and divide them according to the board.
3. Matching and repairing.
The length of the slab should be reduced by 20 30mm according to the net height of the floor structure layer. Calculate and measure the size of the partition at the upper part of the door and window opening and the lower part of the window, and match the plate according to this size. When the width of the board is not suitable for the length of the partition wall, part of the partition wall panel should be pre-spliced to widen (or sawn narrow) to a suitable width and placed in a shady corner. Defective plates should be repaired.
4. When there are seismic requirements, the top of the strip should be fixed with a U-shaped steel plate card according to the design requirements. Between the top joints of the two slats, the U-shaped steel plate is fixed on the beam or plate with a nail, and the U-shaped steel plate card is fixed with the safety plate.
5. Formulate adhesives.
The SG791 glue is prepared with building gypsum powder to make cement, gypsum powder: SG791=1:06～0.7 (weight ratio). The preparation amount of adhesive should not exceed 20min at a time. If the prepared adhesive has solidified for more than 30min, it shall not be re-modulated and used with water and glue to avoid cracks in the board seam due to poor bonding.
6. Install the partition panel.
6.1. The installation sequence of partition panels should start from the joint with the wall or the edge of the door opening, and be installed in order. Brush the floating ash on the side of the board, brush the SG791 glue on the wall, the top surface, the top surface and the side of the board (the joint surface), and then scrape the SG791 cement, install it in place according to the position of the elastic line, use a wooden wedge to top the bottom of the board, and then push the partition board by hand to make the board seam slurry, one person uses a special crowbar to top up at the bottom of the board, and the other person beats the wooden wedge, and the partition board must be squeezed tightly, and then the extruded adhesive is scraped flat with a knife (putty knife). Install the partition board in turn according to the above operation methods.
6.2. When installing the partition board, be sure to align the slats with the positioning line that has been bounced on the roof and the floor in advance, and measure the flatness of the wall with a 2m ruler and feeler gauge at any time during the installation process, and check the verticality of the board with a 2m supporting board.
6.3. After the bonding of the wall, the lower mouth of the slab should be blocked tightly with C20 dry hard fine stone concrete after 24 hours, and when the concrete strength reaches more than 10MPa, the wooden wedge under the slab should be removed, and the dry hard mortar of the same strength should be filled.
7. Lay conduits and stabilize junction boxes.
According to the electrical installation drawing, draw the positioning line at the correct position, lay the wire pipe and stabilize the junction box.
7.1. All wires and pipes must be laid along the holes of gypsum board, and it is strictly forbidden to lay horizontally and obliquely.
7.2. Stabilize the junction box, first drill and reaming holes on the board surface (to prevent slamming), and then use a flat shovel to ream, the hole should be of moderate size and square. Clean the hole, brush the SG791 glue first, and then stabilize the junction box with SG791 cement.
8 A plumbing and gas pipeline card.
According to the installation drawings of plumbing and gas pipelines, find the elevation and vertical position, draw the positioning line of the pipe clamp, drill and reaming holes on the partition board (it is forbidden to chisel out), clean up the holes, brush the SG791 glue first, and then fix the pipe clamp with SG791 cement.
9. Install the hanging embedded parts.
9.1. Cabinets, equipment and decorations can be installed on the partition board, and each board can be set up with two hanging points, and the lifting weight of each lifting point is not more than 80kg.
9.2. Drill and reaming holes on the partition board (to prevent slamming), the hole should be cleaned, brush SG791 glue first, and then fix the embedded parts with SG791 cement, and then hang the equipment after solidification.
10 amp door and window frames.
Generally, the method of leaving the door and window openings first, and then installing the door and window frames. Steel door and window frames must be welded with the embedded parts in the door and window panels. The wooden door and window frame is connected with an L-shaped connector, one side is connected with the wooden frame with a wooden screw, and the other end is welded with the embedded parts in the door and window plate. The gap between the door and window frame and the door and window panel should not exceed 3mm, and a wooden gasket should be added for transition when it exceeds 3mm. Clean the gap with floating ash, brush SG791 glue first, and then caulk with SG791 cement. Caulking should be tight to prevent cracks caused by colliding with the door frame when the door leaf is opened and closed.
11. Plate seam treatment.
10 days after the partition board is installed, check whether all the gaps are well bonded and whether there are cracks, if there are cracks, the cause should be found out and repaired. For all the plate seams and corner joints that have been well bonded, first clean up the floating ash, then brush SG791 glue to paste the 50mm wide glass fiber mesh belt, and paste a layer of 200mm wide (100mm wide on each side) glass fiber cloth at the corner partition wall. After drying, scrape the SG791 cement, slightly lower than the board surface.
12. Plate decoration.
12.1. The wall of the general living room is directly scraped with gypsum putty, and then the second putty is scraped after polishing (putty of different strength should be selected according to the finishing requirements), and then polished and smoothed, and finally the finishing layer is made.
12.2. For partition wall kicking, the general board should be brushed with a glue at the root first, and then cement and terrazzo skirting; If you make plastic and wooden skirting, you can drill and hit the wooden wedge first, and then nail it to the partition board without brushing the glue.
12.3. Before the wall tiles are pasted, the board surface must be polished and smoothed, in order to strengthen the bonding, first brush SG791 glue (SG791 glue: water = 1:1) together, and then use SG8407 glue to adjust cement (or similar tile adhesive) to paste the tiles.
12.4. If there are local cracks on the surface of the board, they should be treated before spraying before proceeding to the next process.
IIQuality standards
Every 50 rooms of the same type of partition wall project (large rooms and corridors are divided into one room according to the wall surface of the lightweight partition wall 30m), and less than 50 rooms are also divided into one inspection batch. At least 20% of each inspection batch shall be inspected, and there shall be no less than 6 rooms. Less than 6 rooms should be inspected.
1. Main control project.
1.1. The technical indicators of reinforced gypsum hollow slats must meet the requirements specified in the relevant standards. The quality of the raw materials used in the preparation of adhesives must comply with the regulations.
Inspection method: Observe and inspect the product qualification certificate, entry acceptance record and performance test report.
1.2. The bonding of the four sides of the reinforced gypsum hollow slats must be firm.
Inspection method: observation, hand wrench.
1.3. The embedded parts of the hanging point must be firm, and each project needs to be tested for the hanging force, and the test records should be archived as technical data.
Inspection method: Observe and inspect the concealed acceptance records.
2 General items.
2.1. The node structure, component location, and connection anchoring method should all meet the design requirements. Inspection method: observation, hand wrench, check the construction record.
2.2. The bonding of all joints of the partition board should be firm, and the plugging should be tight, and there should be no dry shrinkage cracks. Inspection method: observation, measurement.
2.3. When the door and window frame and the door and window plate are connected by electric welding, the length of the weld should be greater than or equal to 10mm, and the thickness of the weld should not be less than 4mm. The surface of the weld is smooth, without burns, depressions, welding nodules, cracks, bites, porosity and slag inclusions, and the surface of the weld joint should be concave over the plate surface for 3mm.
Inspection method: Observe and inspect the product qualification certificate, entry acceptance record and performance test report, inspection and inspection report.
2.4. The glass fiber mesh cloth strip should be pressed tightly along the center of the board seam and should not be wrinkled. Warping and exposure.
Inspection Method: Observation.
2.5 Allowable deviation items:
The allowable deviation of the installation of reinforced gypsum hollow partition panels shall be in accordance with the provisions of the table below.
IIIFinished product protection
1. In the construction, all professional types of work should be closely cooperated, and the process should be reasonably arranged, and it is strictly forbidden to reverse the process operation. The partition board shall not be collided and knocked within 12 hours after bonding, and the next process construction shall not be carried out.
2. When installing embedded parts, it is advisable to use an electric drill to drill and ream, and use a flat shovel to expand the square hole, and not to knock the partition wall. For the partition wall after scraping putty, there should be no chiseling.
3. When constructing the floor of the building, the mortar should be prevented from splashing the partition board.
4. Strictly prevent transport trolleys from colliding with partition panels and doorways.
Fourth, the projectQuality
1. The reinforced gypsum hollow slats must be dried products that have basically completed shrinkage and deformation. Wet plates that have not been dried should not be used to prevent cracks and deformation of the plates.
2. Pay attention to the transportation and storage of enhanced gypsum hollow slats. During transportation, it should be handled gently, lifted sideways and tied to each other, and should not be lifted and placed flat. The stacking place should be flat, and the bottom pad is 100mm 100mm wood. The board should stand on its side, and the skids should be 50cm away from the end of the board. To prevent the partition board from being deformed by moisture, there should be rainproof measures when stacked in the open air. If the plate is obviously deformed, too large holes that cannot be repaired, fractured or seriously cracked and damaged, it shall not be used.
3. All kinds of materials should be classified and stored, and the name and specifications of the materials should be marked on the tag, and they should not be used incorrectly. Glue, powder and material should be stored in a dry place, and it is strictly forbidden to be damp.
4. The adhesive currently used should be polyvinyl acetate adhesive, and 108 glue should not be used as an adhesive.
FiveSafetyConstruction
The erection of scaffolding for partition works shall comply with building construction safety standards. The springboard erected on the scaffold should be fixed with steel wire binding, and there shall be no probe board. Workers should wear safety helmets when operatingSixGreenEnvironmentally friendly
1. The construction site must be completed and cleared. Set up special personnel to sprinkle water and clean, and do not pollute the environment with dust.
2. Noisy power tools should be constructed within the specified operating time to prevent noise pollution and disturbance to the people.
3. Electromechanical appliances must be installed with electric shock protection devices. Fix the problem immediately if it is found.
4. Abide by the operating procedures, and the three non-operators are never allowed to mess with the equipment to prevent injury.
5. The site is well protected and ventilated, but it is not suitable to pass the hall.