Self-heat preservation building block produced by using industrial byproduct gypsum and preparation method thereof

A technology of industrial by-product gypsum and self-insulating blocks, which is applied in the field of self-insulating blocks and its preparation, can solve the problems of secondary pollution, secondary energy consumption, etc., achieve the effect of simplifying the production process and overcoming large investment

Inactive Publication Date: 2013-05-29
上海鹊之家建筑科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the processing of industrial by-product gypsum basically adopts the calcination proc

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] A method for preparing a self-insulating block, comprising the following steps:

[0027] Take 45 parts by weight of industrial by-product gypsum, 15 parts by weight of hemihydrate gypsum, 5 parts by weight of kaolin, 0.35 parts by weight of superplasticizer, 20 parts by weight of cement, 5 parts by weight of pozzolanic activator, and 10 parts by weight of silica fume. Mill to 200 mesh, then add 4.5 parts by weight of hydrogen peroxide, 4 parts by weight of hydroxypropyl methylcellulose, 3 parts by weight of heat stabilizer, add 40 parts by weight of warm water at 40-45°C, stir and mix, and pour The method is poured into the mold, and after being wet-cured for 3-4 hours after molding, it is cured at room temperature for 10-15 days.

[0028] Among them, the industrial by-product gypsum is one of sulfur gypsum, phosphogypsum and citrate gypsum, the pozzolan activator is one or two of steel slag and blast furnace slag, and the heat stabilizer is calcium stearate.

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Abstract

The invention discloses a self-heat preservation building block produced by using industrial byproduct gypsum and a preparation method thereof. The preparation method comprises the following steps of: preparing 43-46 parts by weight of industrial byproduct gypsum, 14-16 parts by weight of steel slag, 4-6 parts by weight of kaolin, 0.30-0.40 parts by weight of micro mineral powder, 18-22 parts by weight of cement and 4-6 parts by weight of volcanic ash excitant, finely grinding into to 200 meshes through a Raymond mill, then adding 4.0-5.0 parts by weight of hydrogen peroxide, 3-6 parts by weight of hydroxypropyl methyl cellulose, 2-4 parts by weight of heat stabilizer and 35-45 parts by weight of 40-45 DEG C warm water, stirring and mixing, pouring into a mold, carrying out wet maintenance for 3-4 hours after molding, and carrying out normal temperature maintenance for 10-15 days. The preparation method has the advantages that a conventional method for producing light-weight thermal mortar by taking cement as a main raw material and adding materials such as pulverized fuel ash and slag is broken through, gypsum serves as a bran-new binding material to be applied to the mortar, a production technology is simplified due to adoption of a calcination-free technology, and the shortcomings of high investment, high cost, energy dissipation and pollution existing in a conventional calcination technology are overcome.

Description

[0001] technical field [0002] The invention relates to a self-insulating block produced by utilizing industrial by-product gypsum and a preparation method thereof. Background technique [0003] In order to meet the requirements of thermal insulation and building envelope, solve the safety and durability of the envelope structure insulation, maintain the same service life as the building, and save the project cost. Our company decided to develop a new type of self-insulating wall material to meet the national policy and the actual needs of construction projects. The technology of using industrial by-product gypsum to produce self-insulating blocks has a better thermal insulation effect than traditional blocks. The industrial by-product gypsum is used as the main cementing material. This low-carbon, green product can increase the rate of replacing cement; it is also a contribution to energy conservation, emission reduction, sustainable development, and circular economy. [...

Claims

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Application Information

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IPC IPC(8): C04B28/14
Inventor 魏雄石志刚张同刚
Owner 上海鹊之家建筑科技有限公司
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