Desulfurized gypsum based antistatic self-leveling mortar and its preparation method

A technology for self-leveling mortar and desulfurization gypsum, which is applied in the fields of building materials and functional materials, can solve the problems of unutilized, accumulation and storage of desulfurized gypsum, etc., and achieves the effects of long construction time, saving engineering cycle, and easy control of product quality.

Inactive Publication Date: 2012-04-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although desulfurized gypsum has been used in cement production, building blocks, construction gypsum and plastering plaster, etc., there are still a large amount of desulfurized gypsum that is only stored in accumulation and needs to be utilized.

Method used

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  • Desulfurized gypsum based antistatic self-leveling mortar and its preparation method
  • Desulfurized gypsum based antistatic self-leveling mortar and its preparation method
  • Desulfurized gypsum based antistatic self-leveling mortar and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Desulfurization gypsum-based antistatic self-leveling mortar for non-humid parts, its components and proportions (weight percentages) are: desulfurization gypsum: 41.2%, slag powder: 7.5%, fly ash: 3.5%, Portland cement: 5.5%, quartz sand: 21.4%, steel slag sand: 18.0%, modified carbon fiber: 0.15%, redispersible latex powder: 0.84%, cellulose ether: 0.04%, water reducer: 0.15%, Defoamer: 0.18%, early strength agent: 1.5%, retarder: 0.04%, modified carbon nanotube: 0.0035%. The performance results obtained by the detection test are shown in Table 2.

[0022] Table 2 Performance test results of desulfurized gypsum-based antistatic self-leveling mortar in Example 1

[0023]

Embodiment 2

[0024] Example 2: Desulfurized gypsum-based antistatic self-leveling mortar that can be used in relatively humid parts, its components and proportions (weight percentages) are: desulfurized gypsum: 34.6%, slag powder: 7.5%, fly ash: 4.4% , Portland cement: 9.6%, quartz sand: 20.1%, steel slag sand: 20.1%, modified carbon fiber: 0.11%, redispersible latex powder: 0.95%, cellulose ether: 0.032%, water reducer: 0.17% , Defoaming agent: 0.23%, early strength agent: 2.13%, retarder: 0.04%, modified carbon nanotube: 0.0017%. The performance results obtained by the detection test are shown in Table 3.

[0025] Table 3 Performance test results of desulfurized gypsum-based antistatic self-leveling mortar in Example 2

[0026]

[0027] It can be seen from the above examples that the desulfurized gypsum-based antistatic self-leveling mortar proposed by the present invention can be formulated into corresponding products according to the requirements of construction projects. All perf...

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Abstract

The invention relates to desulfurized gypsum based antistatic self-leveling mortar and its preparation method. Adopting calcined desulfurized gypsum as the main raw material, the desulfurized gypsum based antistatic self-leveling mortar comprises the following components by weight: 25-45 of desulfurized gypsum, 5-10 of slag powder, 3-10 of fly ash, 5-12 of portland cement, 15-25 of quartz sand, 15-25 of steel slag sand, 0.03-0.2 of modified carbon fiber, 0.5-2.0 of redispersible emulsion powder, 0.02-0.07 of cellulose ether, 0.10-0.25 of a water reducer, 0.1-0.4 of an antifoaming agent, 1.2-2.5 of an early strength agent, 0.02-0.06 of a retarder, and 0.002-0.005 of a carbon nanotube. The desulfurized gypsum based antistatic self-leveling mortar has good antistatic performance, bonding property, wear resistance, as well as high compressive strength, and overcomes the defect of poor water proofness of gypsum based materials. By utilizing a lot of industrial solid waste, the self-leveling mortar of the invention has the advantages of environmental protection, energy saving, and low cost, etc., and can be applied in various building ground projects with requirements for electrostatic protection and levelability.

Description

technical field [0001] The invention belongs to the technical field of building materials and also relates to the technical field of functional materials, in particular to a desulfurized gypsum compounded by desulfurized gypsum, steel slag sand, fly ash, slag powder, carbon fiber, carbon nanotubes and chemical additives Base antistatic self-leveling mortar and preparation method thereof. Background technique [0002] Energy conservation and comprehensive utilization of resources is a long-term strategic policy for my country's economic and social development. my country has proposed to develop a low-carbon economy based on low energy consumption, low pollution, and low emissions. One of the important components of the low-carbon economy is the secondary resource utilization of various wastes, especially industrial solid wastes. Desulfurization gypsum is a kind of solid waste produced in the process of flue gas desulfurization in coal-fired power plants. It takes up a lot o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/62
Inventor 张国防王培铭
Owner TONGJI UNIV
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