A, gypsum board joint how to deal with:
(1) Choose light steel keel with good rigidity and straightness. As the skeleton material of partition wall and ceiling, light steel keel should ensure sufficient performance indexes, that is, high strength, good rigidity and straightness, strong corrosion resistance, etc. If the straightness of the keel is not good, the skeleton will be uneven, so that internal stress will be generated when the gypsum board is fixed, and in the process of stress release, the joint of the board will inevitably crack.
(2) The smoothness of the keel frame meets the requirements after installation, and the gypsum board will not generate internal stress after installation, thus reducing the hidden danger of joint cracking.
(3) In strict accordance with the construction process, the plasterboard shall be sealed after the air conditioning and fire fighting systems are qualified, so as to prevent the plasterboard from cracking due to pipeline leakage and maintenance trampling.
(4) When fixing gypsum board and keel, please follow the precautions in fixing gypsum board with self-tapping nails.
(5) Opening holes in gypsum board, such as tuyeres, manholes, lamp holders, etc., should be operated in strict accordance with the construction specifications, and keels should be added around the hole. Lights, tuyeres and other heavy objects are supported by hanging bars respectively and separated from gypsum board system.
(6) Select special sealing materials. The quality of caulking material is good. If the caulking gypsum is mixed with ordinary gypsum powder and 107 glue, it has neither strength nor cohesive force, and its compound with caulking belt is poor, so cracks will inevitably occur. It is suggested to choose Longpai joint filling gypsum.
Second, what is the function of gypsum board?
① Sound insulation. The sound insulation effect of the double-layer separated sound insulation wall composed of thin plates and hollow slats is equivalent to that of a brick wall with a thickness of 24 cm, and the sound insulation index can reach 40 ~ 50 dB.
② Fire prevention. Gypsum board is a kind of incombustible material, which has certain fireproof performance, and part of it can be used as fireproof protective layer of steel structure.
3 strength. When the lateral load of the wall is 250 Pa, the large lateral deformation of the wall is not greater than 1/240 of the wall height.
④ Humidity adjustment. When the humidity in the air is greater than its own water content, gypsum board can absorb the water in the air; On the contrary, gypsum board can release the moisture in the board and adjust the humidity in the indoor air.
From the above, it can be seen that if gypsum boards are improperly installed, there will be a big gap between two or more gypsum boards, which will not only lead to the overall structure is not so beautiful, but also affect the later use and life effect. For example, if the gap in gypsum board is too big, it will leak. Therefore, similar to the above, Bian Xiao will analyze the precautions and methods and skills of gypsum board joints, and interested friends can learn to choose appropriate materials for filling in advance.
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