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Alkali-activated phosphorus slag micropowder lightweight foam concrete insulation board and preparation method thereof

A technology of phosphorus slag micropowder and lightweight foam, applied in ceramic products, other household appliances, applications, etc., can solve the problems of slow strength development, long setting time, strength shrinkage, etc., achieve low water absorption, reduce carbon emissions, Energy saving effect

Active Publication Date: 2018-06-08
中建西部建设西南有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ordinary Portland cement is mainly used in the preparation of foam concrete, but the setting time of ordinary Portland cement is relatively long. Although some coagulant products can shorten the setting time to less than 10 minutes, due to the slow development of its early strength , will still face the problem of low strength or even no strength in the later stage. Therefore, ordinary Portland cement is usually only suitable for the preparation of dry density 300kg / m 3 foam concrete above
And for dry density at 300kg / m 3 Below, especially when the dry density is 100-200kg / m 3 Early-strength and fast-hardening special cement is usually used for lightweight foam concrete, but a large number of studies and applications have shown that the foam concrete prepared by special cement will produce pulverization and strength shrinkage after a period of time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An alkali-activated phosphorus slag micropowder lightweight foam concrete insulation board, the alkaline activator is prepared by mixing water glass (modulus 0.8) and sodium sulfate at a mass ratio of 3:1, and the coagulation agent is ground by a blast furnace Slag (specific surface area is 400m 2 / kg) and fly ash microbeads (the specific surface area is 900m 2 / kg) is mixed at a mass ratio of 2.5:1, and the modifier is mixed with light-burned magnesia (calcination temperature is 600° C.) and slaked lime at a mass ratio of 2:1; the lightweight foamed concrete insulation board The preparation method comprises the following steps:

[0031] 1) The raw materials are weighed, and the mass percentages of each raw material are: 35% of phosphorus slag powder, 6% of alkaline activator, 12% of coagulation regulator, 15% of modifier, 0.4% of polypropylene fiber, and composite foaming agent 9%, water 22.6%.

[0032] 2) Put phosphorus slag micropowder, alkaline activator, coagula...

Embodiment 2

[0037] An alkali-activated phosphorus slag micropowder lightweight foam concrete insulation board, the alkaline activator is prepared by mixing water glass (modulus 1.2) and sodium sulfate at a mass ratio of 5:1, and the coagulation agent is ground by a blast furnace Slag (specific surface area is 450m 2 / kg) and fly ash microbeads (the specific surface area is 950m 2 / kg) is mixed at a mass ratio of 2.8:1, and the modifier is mixed with light-burned magnesia (calcination temperature is 800° C.) and slaked lime at a mass ratio of 3:1; the lightweight foamed concrete insulation board The preparation method comprises the following steps:

[0038] 1) The raw materials are weighed, and the mass percentages of each raw material are: 39% of phosphorus slag powder, 7% of alkaline activator, 10% of coagulation regulator, 9% of modifier, 0.8% of polypropylene fiber, and composite foaming agent 10%, water 24.2%.

[0039] 2) Put phosphorus slag micropowder, alkaline activator, coagula...

Embodiment 3

[0044] An alkali-activated phosphorus slag micro-powder lightweight foam concrete insulation board, the alkaline activator is prepared by mixing water glass (modulus 1.0) and sodium sulfate at a mass ratio of 4:1, and the coagulation agent is ground by a blast furnace Slag (with a specific surface area of ​​430m 2 / kg) and fly ash microbeads (specific surface area is 1000m 2 / kg) is mixed at a mass ratio of 3:1, and the modifier is mixed with light-burned magnesia (calcination temperature is 850° C.) and slaked lime at a mass ratio of 4:1; the lightweight foamed concrete insulation board The preparation method comprises the following steps:

[0045] 1) The raw materials are weighed, and the mass percentages of each raw material are: 36% of phosphorus slag powder, 10% of alkaline activator, 9% of coagulation regulator, 10% of modifier, 0.6% of polypropylene fiber, and composite foaming agent 12%, water 22.4%.

[0046] 2) Put phosphorus slag micropowder, alkaline activator, c...

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Abstract

The invention discloses an alkali-activated phosphorous slag micropowder lightweight foam concrete insulation board. %, modifier 9-15%, fiber 0.4-0.8%, foaming agent 9-12%, water 22-26%. The invention uses phosphorous slag micropowder as the main gelling material, and adjusts the setting time and shrinkage performance of the foamed concrete through excitation by strong alkali and adding appropriate setting adjustment components and modification components. The absolute dry density of the foam concrete insulation board prepared by the invention can be controlled between 150-250kg / m3, the 28d compressive strength is 0.30-0.63MPa, the thermal conductivity is 0.042-0.051W / m·K, and the water absorption rate is 5-8 %, is an ideal external thermal insulation enclosure material.

Description

technical field [0001] The invention belongs to the field of inorganic building thermal insulation materials, and in particular relates to an alkali-activated phosphorus slag micropowder lightweight foamed concrete thermal insulation board and a preparation method thereof. Background technique [0002] Building energy-saving is the focus of energy-saving work in the world today. Since this century, my country has invested a lot of manpower and material resources in the research and development of new energy-saving building materials. Different from ordinary building materials, new environment-friendly and energy-saving building materials are not only required to have the characteristics of light weight and high strength, but also must have the advantages of heat preservation, heat insulation, sound insulation, fire prevention, moisture resistance, and earthquake resistance. In addition, new energy-saving building materials also require raw materials to use low-carbon emissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B38/02C04B22/08C04B16/06
Inventor 高育欣陈景甘戈金卢佳林徐芬莲
Owner 中建西部建设西南有限公司