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A kind of construction method of paper-faced gypsum board suspended ceiling

A paper-faced gypsum board and construction method technology, which is applied to ceilings, building components, buildings, etc., can solve the problems of high cost, labor and time-consuming, and poor anti-cracking effect of anti-cracking belts, and achieve firm bonding, preparation technology and The effect of simple equipment, simple aging resistance and corrosion resistance

Active Publication Date: 2018-12-25
江西奇信集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the anti-crack belt is placed, its anti-crack value has only increased by a few hundred cattle, which is not enough to resist
Moreover, this method is labor-intensive and time-consuming, the cost of the special anti-crack belt is also relatively high, and the anti-crack effect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After completing the construction process of steps 1-5 described in the above summary of the invention, the polymer flexible mortar configuration method in step 6 is as follows:

[0032] Take a clean bucket, mix 0.9kg of polyacrylate emulsion, 3.3kg of P·○42.5 white cement, and 5.8kg of fine sand with a particle size of 0.05-0.25mm and a fineness modulus of 1.6-2.2, according to the ratio of 1:4 Add a certain amount of water to the water-cement ratio, stir while pouring, and stir with a 1000 rpm low-speed electric stirring rod for about 3 to 5 minutes, then let it stand for 2 to 3 minutes and stir again before use. Use up within hours.

[0033] After finishing the gypsum board caulking in step 7 using the mortar in this example, the test was carried out according to GB / T 23445-2009. The test results were: setting time 6.1h, bond strength 1.2MPa, and elongation at break 26.3%.

Embodiment 2

[0035]After completing the construction process of steps 1-5 described in the above summary of the invention, the polymer flexible mortar configuration method in step 6 is as follows:

[0036] Take a clean bucket, put 1kg of polyacrylate emulsion, 3kg of P·○42.5 white cement, 6kg of fine sand with a particle size of 0.05-0.25mm and a fineness modulus of 1.6-2.2, according to the water-cement ratio of 1:4 Add a certain amount of water, stir while pouring, and stir with a 1000 rpm low-speed electric stirring rod for about 3 to 5 minutes, then let it stand for 2 to 3 minutes and stir again before use. Each ingredient should be used within 2 hours use up.

[0037] After using the mortar in this example to complete the caulking of the gypsum board in step 7, the test was carried out according to GB / T 23445-2009. The test results were: setting time 6.3h, bond strength 1.3MPa, elongation at break 27.1%.

Embodiment 3

[0039] After completing the construction process of steps 1-5 described in the above summary of the invention, the polymer flexible mortar configuration method in step 6 is as follows:

[0040] Take a clean bucket, mix 0.8kg of polyacrylate emulsion, 3.6kg of P·○42.5 white cement, and 5.6kg of fine sand with a particle size of 0.05-0.25mm and a fineness modulus of 1.6-2.2, according to the ratio of 1:4 Add a certain amount of water to the water-cement ratio, stir while pouring, and stir with a 1000 rpm low-speed electric stirring rod for about 3 to 5 minutes, then let it stand for 2 to 3 minutes and stir again before use. Use up within hours.

[0041] After using the mortar in this example to complete the gypsum board caulking in step 7, the test was carried out according to GB / T 23445-2009. The test results were: setting time 5.8h, bond strength 1.1MPa, elongation at break 25.8%.

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Abstract

The invention relates to a construction method for a gypsum plaster board ceiling. Especially, in the link of caulking construction, polyacrylate emulsion polymer flexible mortar is taken as a ceiling gypsum board caulking compound for caulking. The flexible mortar has excellent cohesive property, crack resistance, seepage resistance, ageing resistance and corrosion resistance, so that the gypsum plaster board ceiling constructed according to the method can fully meet the requirement of crack resistance and the problem of board gap cracking of the traditional ceiling method is solved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a construction method suitable for a paper-faced gypsum board ceiling. Background technique [0002] Seam cracking is the main quality problem of gypsum board ceilings. There are many reasons for cracking of board seams, mainly including drying shrinkage and temperature shrinkage of gypsum boards, stress difference caused by stiffness difference between light steel keel and gypsum boards, and expansion joints not left in place if the ceiling is too long and improper construction. Due to the high humidity of the newly built buildings, in order to catch up with the construction period and the upper space is not fully dry, the ceiling gypsum boards are installed, and the temperature caused by the seasonal temperature difference and the repeated opening and closing of the central air conditioner in large hotels, shopping malls, office building conference halls and other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B9/00E04B9/18E04B9/06E04B9/04C04B28/04
CPCC04B28/04C04B2111/00672E04B9/00E04B9/04E04B9/06E04B9/18C04B24/2641C04B14/06
Inventor 余少雄梁东温日平宋雪山李键鹏
Owner 江西奇信集团股份有限公司
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