Foamed gypsum block and preparation method thereof

A technology of foamed gypsum and blocks, which is applied in the field of building materials, can solve the problems of high production cost, and achieve the effects of low production energy consumption, reduced consumption, and good water resistance

Inactive Publication Date: 2020-06-23
贵州美可斯建筑工程技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above patent provides an aerated block with gypsum powder as the main raw material. Although the cost of raw materials is reduced to a

Method used

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  • Foamed gypsum block and preparation method thereof
  • Foamed gypsum block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of foamed gypsum block, comprises the following steps:

[0044] (1) Mix the mixed-phase gypsum powder with cement and admixture evenly to obtain the mixed gypsum powder;

[0045] (2) Alkylsulfonic acid surfactants and cellulose ether stabilizers are mixed into a composite foaming agent according to a mass ratio of 5:0.2;

[0046] (3) Add the mixed gypsum powder so that the consistency of the gypsum slurry is 40mm, and then stir and mix evenly to obtain a gypsum slurry; mix the foaming agent and water according to the ratio of 1:20 and add it to the foaming machine for stirring form foam;

[0047] (4) mixing and stirring the gypsum slurry and the foam evenly to obtain a foaming slurry;

[0048] (5) The foamed slurry is poured into the mold, and the pouring body is naturally cured in the mold until the compressive strength is not less than 2.0MPa, and the mold can be demoulded;

[0049] (6) Take out the pouring body from the mold and cut it...

Embodiment 2

[0055] A kind of preparation method of foamed gypsum block, comprises the following steps:

[0056] (1) Mix the mixed-phase gypsum powder with cement and admixture evenly to obtain the mixed gypsum powder;

[0057] (2) Mix alkylsulfonic acid surfactants and cellulose ether stabilizers in a mass ratio of 5:0.25 to form a foaming agent;

[0058] (3) Add the mixed gypsum powder so that the consistency of the gypsum slurry is 50mm, and then stir and mix evenly to obtain a gypsum slurry; mix the foaming agent and water according to the ratio of 1:15 and add it to the foaming machine for stirring form foam;

[0059] (4) mixing and stirring the gypsum slurry and the foam evenly to obtain a foaming slurry;

[0060] (5) The foamed slurry is poured into the mold, and the pouring body is naturally cured in the mold until the compressive strength is not less than 2.0MPa, and the mold can be demoulded;

[0061] (6) Take out the pouring body from the mold and cut it into blocks of requir...

Embodiment 3

[0067] A kind of preparation method of foamed gypsum block, comprises the following steps:

[0068] (1) Mix the mixed-phase gypsum powder with cement and admixture evenly to obtain the mixed gypsum powder;

[0069] (2) Alkylsulfonic acid surfactants and cellulose ether stabilizers are mixed into a foaming agent in a mass ratio of 5:0.2 as determined by experiments;

[0070] (3) Add the mixed gypsum powder so that the consistency of the gypsum slurry is 50 mm of water and mix it evenly to make a gypsum slurry; mix the foaming agent and water in a ratio of 1:10 and add it to the foaming machine for stirring form foam;

[0071] (4) mixing and stirring the gypsum slurry and the foam evenly to obtain a foaming slurry;

[0072] (5) The foamed slurry is poured into the mold, and the pouring body is naturally cured in the mold until the compressive strength is not less than 2.0MPa, and the mold can be demoulded;

[0073] (6) Take out the pouring body from the mold and cut it into b...

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Abstract

The invention relates to a foamed gypsum block and a preparation method thereof. The preparation method comprises the following steps of (1) mixing mixed-phase gypsum powder with cement and an additive to prepare mixed gypsum powder; (2) mixing a surfactant and a stabilizer into a composite foaming agent; (3) uniformly stirring and mixing the mixed gypsum powder and water to prepare gypsum slurry,and adding water into the foaming agent to be stirred to form foam; (4) mixing the gypsum slurry and the foam to prepare foaming slurry; (5) pouring the foaming slurry into a building block mold, conducting initial curing on a pouring body in the mold until the compressive strength is not smaller than 2 MPa, and conducting demolding; (6) cutting the demolded casting body into the building block by using a band saw; and (7) conducting natural curing. According to the gypsum solid building block, the indexes such as the block size, strength and single block quality are basically the same as those of traditionally used aerated concrete, the gypsum solid building block can be constructed by adopting a construction method of a traditional aerated concrete building block, no special requirements for skills of workers exist, and the gypsum solid building block has a wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a foamed gypsum block and a preparation method thereof. Background technique [0002] Industrial by-product gypsum is an industrial by-product produced in the process of industrial production, mainly including phosphogypsum, fluorine gypsum, and desulfurization gypsum. Desulfurization gypsum is a by-product of desulfurization obtained from wet desulfurization of coal-fired boiler flue gas. At present, the annual discharge of desulfurized gypsum in my country is nearly 100 million tons. The main component of desulfurized gypsum is the same as natural gypsum, which is calcium sulfate dihydrate, with a purity of 75%-90%. Its physical and chemical properties are not significantly different from those of natural gypsum. Desulfurization Gypsum is yellow-white powder with low alkali content, the main impurities are calcium sulfite and silicon dioxide, less harmful substances,...

Claims

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Application Information

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IPC IPC(8): B28C5/38B28B1/50B28B11/14C04B28/14C04B38/10C04B111/40
CPCB28B1/50B28B11/145B28C5/388C04B28/142C04B38/10C04B2111/00017C04B2111/28C04B2111/40C04B7/00C04B24/16C04B24/383
Inventor 安柯钟继吴唐鹏曾强魏鑫
Owner 贵州美可斯建筑工程技术有限公司
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