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Inner wall putty powder taking desulfurized gypsum as base material and method for using same

A technology for interior wall putty powder and desulfurization gypsum is applied in the field of interior wall putty powder, which can solve the problem of low application effect and achieve the effects of improving construction efficiency, excellent workability and sandability, and high environmental and social benefits.

Inactive Publication Date: 2010-11-24
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the utilization of desulfurized gypsum, some projects have been successfully developed and implemented abroad, such as being used as a cement setting agent, soil improver, roadbed material, etc., but due to many reasons, the application effect is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An interior wall putty powder based on desulfurized gypsum, in parts by weight, desulfurized gypsum 100, S95 slag powder 100, aluminate cement 20, talcum powder 600, lime 40, sodium bentonite 20, methyl fiber It is formulated with plain ether 0.10 (viscosity 20,000mPa.s), hydroxypropyl starch ether 0.04 (viscosity 40,000mPa.s), and sodium fluorosilicate 0.2. After adding water accounting for 80% of the weight of the product of the present invention and stirring evenly, it can be scraped without hindrance, the drying time is 3.5 hours, the sandability is 42%, the bonding strength is 0.29MPa, and the bonding strength is 0.26MPa after immersion in water for 48 hours , No abnormal changes after soaking in 5% alkali solution for 24 hours.

Embodiment 2

[0037] An interior wall putty powder based on desulfurized gypsum, in parts by weight, desulfurized gypsum 100, S95 slag powder 250, aluminate cement 80, talcum powder 1200, lime 110, sodium bentonite 80, methyl fiber It is formulated with plain ether 0.02 (viscosity 60,000mPa.s), hydroxypropyl starch ether 0.20 (viscosity 60,000mPa.s), and sodium fluorosilicate 1.0. After adding water accounting for 120% of the product's weight and stirring evenly, it can be scraped without hindrance, the drying time is 3.2 hours, the sandability is 68%, the bonding strength is 0.64MPa, and the bonding strength is 0.54MPa after 48 hours of immersion in water. No abnormal changes after soaking in 5% alkali solution for 24 hours.

Embodiment 3

[0039] An interior wall putty powder based on desulfurized gypsum, in parts by weight, desulfurized gypsum 100, S75 slag powder 180, aluminate cement 58, talcum powder 1000, lime 80, sodium bentonite 50, methyl fiber It is formulated with plain ether 0.06 (viscosity 100,000mPa.s), hydroxypropyl starch ether 0.06 (viscosity 50,000mPa.s), and sodium fluorosilicate 0.5. After adding water accounting for 60% of the weight of the product of the present invention and stirring evenly, it can be scraped without hindrance, the drying time is 3.0h, the sandability is 30%, the bonding strength is 0.51MPa, and the bonding strength is 0.37MPa after immersion in water for 48 hours , No abnormal changes after soaking in 5% alkali solution for 24 hours.

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Abstract

The invention belongs to the technical field of building materials and particularly relates to inner wall putty powder taking desulfurized gypsum as a base material. The putty powder consists of the desulfurized gypsum, ground slag, aluminate cement, talcpowder, lime, sodium bentonite, methylcellulose ether, hydroxypropyl starch ether and sodium fluosilicate. Due to the adoption of the inner wallputty powder, the problems of recycling and efficient utilization of industrial solid waste, namely the desulfurized gypsum, low activity of the desulfurized gypsum, and easy cracking and peeling of the conventional cement-based putty can be solved effectively. Compared with natural gypsum-based inner wall putty powder, the inner wall putty powder taking the desulfurized gypsum as the base material has better environmental friendliness. The inner wall putty powder is suitable for inner wall construction of various buildings.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an interior wall putty powder with desulfurized gypsum as a base material and a use method thereof. Background technique [0002] Energy saving and emission reduction is an important strategic policy that China and the whole world must implement in order to pursue sustainable development, and it is also an important measure that must be taken to create a healthy and harmonious living environment for all mankind. The implementation of flue gas desulfurization in thermal power plants aims to protect the atmospheric environment by removing sulfur dioxide in the flue gas. However, the by-product desulfurization gypsum produced in the desulfurization process has become a new solid waste. Its simple stockpiling has caused serious environmental pollution and occupied a large amount of land resources. Therefore, the resource utilization task of desulfurization gyp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
Inventor 孙振平郑金飚罗琼黄晖皓蒋正武
Owner TONGJI UNIV
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