Why is there a crack near the door?
After a period of use, some walls separated by the frame and the cover panel will have vertical cracks, especially on the doors. This is mainly caused by the following four situations:
(1) When installing the partition frame, the columns of the frame are not supported to the top and the bottom of the beam.
Or the bottom of the floor is fixed.
(2) Use upright posts at the door.
(3) The column is not fixed firmly.
(4) The front and rear sides of the joint of the cover plate are in the same column or in the door.
Therefore, in the process of partition construction, the partition frame should be connected and fixed with the bottom of beam or floor. The frame is installed firmly without looseness. In order to avoid cracks in the door caused by the vibration of the door, strengthening columns should be added on both sides of the door to enhance the seismic strength of the door. When installing the cover panel, the front and rear seams should be staggered, and the cover panel seams should not be located at the door and should be avoided at the window. As long as we can pay attention to the above aspects, we can basically avoid cracks caused by insufficient stiffness.
Why is it easy to break or have longitudinal cracks at the external corner of the partition wall of the cover panel?
In home decoration, there are many light materials such as cover plates to separate rooms. Because the impact resistance of light materials is poor, especially in the protruding parts such as external corners, they will be hit by carelessness. Although some external corners do not collide, cracks will appear along the slab joints after a period of use. This is because this part lacks protective measures. At present, people generally use high-grade cement mortar as a dark or light-colored corner protector for the external corner of the wall as a coating layer, and also use wood materials as a corner protector to protect the corner from being damaged by collision. For the partition wall made of light materials such as cover panel, because its surface is relatively flat, it is not necessary to include rough leveling, and it can be leveled only by embedding putty. Because the embedded layer is thin, corner protector is often neglected. Because of the weakness of the cover panel wall itself and the lack of protective measures, it is more likely to be damaged. In addition, the cover panel has a joint where two panels intersect at the outer corner, which is easy to crack if it is not handled well. Therefore, it is particularly important to use corner protectors at the external corner of the partition wall of the cover panel.
For the corner protector of the cover panel, special corner protector should be used, which is generally made of metal or plastic and has a thin thickness, and is available in the building decoration material market.
The corner protector of the partition wall of the cover panel shall be installed and fixed at the joint of the cover panel at the external corner after caulking. It is required that the corner protector and cover panel be pasted flat and tight, and then the wall surface is fully accepted until the wall surface is flat and level. During construction, generally observe and try to install by hand to check whether the corner protector is missing and whether the installation is tight, flat and firm.
Why is the surface of partition wall uneven?
Some light partition walls are obviously uneven, especially at the joint of two boards. This happens because the seam of the two plates obviously protrudes out of the plane of the plates after sewing. {HotTag} When the wall surface is full of batches, the batch embedding layer on the board surface is thick, and the batch embedding at the joints is thin. When the putty dries, it will shrink, resulting in uneven wall surface.
In order to ensure the smoothness of the wall, the wall should be dried, polished and cleaned of floating ash, then the wall should be embedded and polished after drying, and the wall decoration can only be carried out after the whole wall is leveled.
Check whether the wall is flat. After polishing, check with a 2-meter-long ruler and wedge feeler gauge. If it exceeds 2mm, it is uneven and needs to be rectified. The wall can only be decorated if it meets the requirements.
What problems should be paid attention to when using glass partition?
Glass not only has the applicable functions of light transmission, perspective, sound insulation, heat insulation and heat preservation, but also with the progress of science and technology, many new decorative glasses have appeared, which have the decorative effect of combining practicality and gorgeous, and are increasingly used in home decoration. However, there are many kinds of glass, so we should choose different glasses according to different parts and functions in home decoration.
Using glass partition, the most important thing is to ensure that the installation is firm and not loose. Because the partition wall is easy to be collided, its safety should be considered first, and the glass used for the partition wall should be safety glass. At present, the safety glasses stipulated in China are tempered glass and laminated glass. Secondly, the thickness of the glass used for the partition wall should meet the following requirements: tempered glass should not be less than 5mm, laminated glass should not be less than 6.38mm, and frameless glass should be tempered glass with a thickness of not less than 1Omm. In addition, the glass edge of the glass partition wall should not be in direct contact with hard materials, and the gap between the glass edge and the bottom of the pool should not be less than 4 ~ 5 mm The depth of the notch where the glass is embedded in the wall, ground and top is: when the glass thickness is 5 ~ 6 mm, the depth is 8 mm; When the glass thickness is 8 ~ 10mm, the depth is 10mm. Gap between glass and notch: when the glass thickness is 5 ~ 6 mm, the gap is 2 mm; When the glass thickness is 8 ~ 12 mm, the gap between front and rear is 3mm, and the gap should be filled with elastic sealant or rubber strip. The gap between the bottom of the glass and the bottom of the pool should be supported by at least two PVC or rubber pads with Shore hardness of 80 ~ 90, and the length of the pads should not be less than10 mm. The gap between the two sides of the glass and the bottom of the pool should be filled with elastic positioning blocks with length not less than 25mm. The supporting block and locating block shall be set at the position with the side length of 1/4, and the distance from the slot angle shall not be less than 300mm.
For the parts that are easy to be affected with damp, such as mirror glass in the bathroom, all other mirror glasses should have moisture-proof isolation measures. The simplest method is to seal the mirror glass with neutral sealant to prevent moisture from infiltrating and damaging the coating on the back of the mirror. Never use acid sealant, because acid sealant will corrode the coating on the back of the mirror.
For the glass decoration that needs to be connected to the power supply, attention should also be paid to prevent leakage.
For the general floor-standing glass partition wall set purely for lighting, an anti-collision sign with decorative patterns should be set at the place where the glass surface is away from the ground1.5 ~1.7m..
What should be paid attention to when glass brick is used as partition wall?
Glass brick partition wall is also a kind of glass partition wall, but the glass brick is built in blocks, which is heavier than other glass partition walls, and the construction technology is different from other masonry walls, so the glass brick is easy to crack, loosen, knock and even break, which affects the decorative effect. Therefore, the following aspects should be paid attention to in the construction of glass brick partition wall:
(l) The glass brick should be built on the basis of strengthening with two F6 ~ F8 steel bars. The foundation height should not be greater than 150mm, and the width should be greater than the thickness of glass brick by more than 20 mm. ..
(2) Metal profiles shall be applied at the top and both ends of the glass brick partition wall, and the width of the broken mouth shall be greater than the brick thickness 1o ~ 18mm.
(3) When the length or height of the partition wall is greater than 1500mm, f6-f8 steel bars shall be set between the bricks for reinforcement. Set one steel bar every second floor vertically (when the length and height exceed 150Omm, set two steel bars); A steel bar is set every three vertical joints in the horizontal direction. The reinforcing bar shall extend into the notch not less than 35mm.
(4) The height of partition wall of reinforced glass brick shall not exceed 4m.
(5) Metal profiles shall be fixed with galvanized expansion bolts not less than f8, and the spacing shall not be more than 5OOmm.
(6) The two ends of the glass partition wall and the two wings of the metal profile should have a sliding seam with a width of not less than 4mm, and the seam should be filled with linoleum; There should be an expansion joint with a width not less than 10mm between the glass partition and the ventral surface of the profile, and the joint should be filled with rigid foam plastic. expansion joint
Expansion joints and expansion joints are set to adapt to the thermal expansion and contraction of glass bricks or slight structural changes, and to avoid the damage of glass brick partitions.
(7) The top glass brick should extend into the notch of the top metal profile 10 ~ 25mm, and be fixed between it and the ventral surface of the profile with a water wedge to prevent the glass brick from breaking due to rigid extrusion.
(8) The mortar label of glass brick shall be M5. The mixing ratio of jointing mortar and river sand (fine sand) is 1: 1.
(9) The joint between glass bricks shall be not less than10mm and not more than 30mm. ..