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Desulfurized gypsum base polyphenyl particle heat insulation mortar

A technology of polyphenylene particles and desulfurization gypsum, which is applied in the field of building materials, can solve the problems of unreasonable utilization of desulfurization gypsum, insufficient attention to the use effect, occupation of land resources, etc., to achieve excellent workability and construction, outstanding environmental benefits and Social benefits, the effect of improving production and construction efficiency

Inactive Publication Date: 2010-06-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some treatment methods currently available, including use as cement retarder, soil modifier and building materials can effectively solve the problem of utilizing part of desulfurized gypsum. Insufficient attention, the vast majority of desulfurization gypsum in our country is still not rationally utilized, and is piled up and stored in large quantities, occupying precious land resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1, a desulfurization gypsum-based polystyrene particle insulation mortar, according to desulfurization gypsum 100, polystyrene particles 7, metakaolin 2, steel slag 2.5, β-hemihydrate gypsum 2.5, lime 1, calcined alum 1, latex powder 1, The weight ratio of cellulose ether 0, air-entraining agent 0, and water reducer 0 is prepared, and the water consumption is 125% of the total mass of dry powder materials. The dry apparent density of this insulation mortar product is 247kg / m 3 , the compressive strength is 217kPa, the compressive shear bond strength is 62kPa, the softening coefficient is 0.53, and the thermal conductivity is 0.058W / m.K.

Embodiment 2

[0045] Example 2, a desulfurized gypsum-based polystyrene particle insulation mortar, according to desulfurized gypsum 100, polystyrene particles 14, metakaolin 10, steel slag 10, β-hemihydrate gypsum 10, lime 5, calcined alum 4, latex powder 6, The weight ratio of cellulose ether 0.8, air-entraining agent 0.05, and water reducer 0.8 is prepared, and the water consumption is 75% of the total mass of dry powder materials. The dry apparent density of this insulation mortar product is 184kg / m 3 , the compressive strength is 289kPa, the compressive shear bond strength is 122kPa, the softening coefficient is 0.61, and the thermal conductivity is 0.045W / m.K.

Embodiment 3

[0046] Example 3, a desulfurized gypsum-based polystyrene particle insulation mortar, according to desulfurized gypsum 100, polystyrene particles 8.5, metakaolin 5, steel slag 3, β-hemihydrate gypsum 5, lime 3, calcined alum 1, latex powder 2, The weight ratio of cellulose ether 0.3, air-entraining agent 0.02, and water reducer 0.4 is prepared, wherein the water consumption is 105% of the total mass of dry powder materials. The dry apparent density of this thermal insulation mortar product is 229kg / m 3 , the compressive strength is 277kPa, the compressive shear bond strength is 145kPa, the softening coefficient is 0.65, and the thermal conductivity is 0.051W / m.K.

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Abstract

The invention belongs to the technical field of building materials, in particular to desulfurized gypsum base polyphenyl particle heat insulation mortar, which is prepared from desulfurized gypsum, polyphenyl particles, metakaolin, steel slag, beta-hemihydrate gypsum, lime, calcined alum, latex powder, cellulose ether, an air entraining agent and a water reducing agent. The invention can perfectly utilize the industrial solid waste material of the desulfurized gypsum. When in use, the invention can effectively avoid the problems of low activity and slow hydration of the desulfurized gypsum and the problems of high production energy consumption and great resource waste of the traditional latex powder polyphenyl particle heat insulation mortar. The invention is suitable for the wall body heat insulation engineering construction of various buildings, and can also meet certain intensity requirements.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a desulfurized gypsum-based polystyrene particle heat insulating mortar. Background technique [0002] With the continuous development of industrial technology, SO in industrial waste gas 2 The huge increase in emissions has caused serious pollution to the atmospheric environment. To this end, various governments have introduced powerful measures to promote the popularization and application of flue gas desulfurization technology. This though effectively solves SO 2 The pollution problem caused by direct discharge into the atmosphere environment, but it also produces a large amount of industrial waste that needs to be rationally utilized - desulfurization gypsum. The research on the comprehensive utilization of desulfurized gypsum began in the 1970s and 1980s. Up to now, some developed countries have formed relatively complete research, development and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
Inventor 孙振平郑金飚黄晖皓吴小琴杨洁郑琨鹏叶丹玫
Owner TONGJI UNIV
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