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Regenerated micropowder alkaline residue clinker-free gel material and preparation method thereof

A technology of regenerated micro-powder and gel materials, applied in cement production, etc., can solve problems such as low recycling rate of construction waste, increased environmental burden, unfavorable development, etc., and achieve significant industrial practical value, qualified stability, and easy operation.

Inactive Publication Date: 2019-04-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's research on the resource utilization of construction waste is relatively late, and the recycling rate of construction waste is low, only 5%. A large amount of construction waste and other industrial waste has not been effectively utilized, wasting resources and increasing the environmental burden , not conducive to future development

Method used

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  • Regenerated micropowder alkaline residue clinker-free gel material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, a regenerated micropowder alkali slag-free clinker gel material includes the following components by weight percentage: slag micropowder meeting the S95 cement standard: 35%, regenerated micropowder: 35%, alkali slag micropowder: 20%, desulfurized gypsum: 5%, admixture content: 5%. Wherein the admixture is a mixture of acidic activator A and basic activator B, the mass ratio of the activator A and activator B is 1:1, and the regenerated micropowder alkali slag has no clinker gel material The specific surface area of ​​each component reaches 400m 2 / kg.

[0024] In this embodiment, the above-mentioned regenerated micropowder uses brick powder, cement and lime in construction waste as raw materials, and the regenerated brick powder and cement-lime mixed micropowder with a particle size not greater than 0.08mm is produced through a dedicated complete set of equipment for a combined grinding system. Make the specific surface area 400m 2 / kg, and dried...

Embodiment 2

[0037] This embodiment is basically the same as Embodiment 1, especially in that:

[0038] In this embodiment, a regenerated micropowder alkali slag-free clinker gel material includes the following components by weight percentage: slag micropowder meeting the S95 cement standard: 30%, regenerated micropowder: 45%, alkali slag micropowder: 15%, desulfurized gypsum: 5%, admixture content: 5%. Wherein said admixture is the mixture of acidic activator A and basic activator B, the mass ratio of said activator A and activator B is 2:3, and the regenerated micropowder alkali slag has no clinker gel material The specific surface area of ​​each component reaches 400m 2 / kg.

[0039] In this embodiment, the above-mentioned regenerated micropowder uses brick powder, cement and lime in construction waste as raw materials, and the regenerated brick powder and cement-lime mixed micropowder with a particle size not greater than 0.08mm is produced through a dedicated complete set of equipme...

Embodiment 3

[0050] This embodiment is basically the same as the previous embodiment, and the special features are:

[0051] In this embodiment, a regenerated micropowder alkali slag-free clinker gel material includes the following components by weight percentage: slag micropowder meeting the S95 cement standard: 45%, regenerated micropowder: 30%, alkali slag micropowder: 15%, desulfurized gypsum: 5%, admixture content: 5%. Wherein said admixture is the mixture of acidic activator A and basic activator B, the mass ratio of said activator A and activator B is 2:3, and the regenerated micropowder alkali slag has no clinker gel material The specific surface area of ​​each component reaches 400m 2 / kg.

[0052] In this embodiment, the above-mentioned regenerated micropowder uses brick powder, cement and lime in construction waste as raw materials, and the regenerated brick powder and cement-lime mixed micropowder with a particle size not greater than 0.08mm is produced through a dedicated co...

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Abstract

The invention provides a regenerated micropowder alkaline residue clinker-free gel material and a preparation method thereof. The regenerated micropowder alkaline residue clinker-free gel material isprepared by recycling construction waste and industrial residues, taking regenerated micropowder, alkaline residues, blast furnace slag and desulfurized gypsum as principal raw materials, doping in asmall amount of composite activator for composition and design and performing deep processing through a powder grinding process to fully activate components. Therefore, the mechanical performance of the prepared regenerated micropowder alkaline residue clinker-free gel material can meet the technical standards of 32.5 cement. The regenerated micropowder alkaline residue clinker-free gel material can solve the problem of stacking of construction waste and industrial residues, partly replace cement and reduce production of cement; meanwhile, the construction waste and industrial residues are lowin cost, so that environmental improvement and cost reduction can be achieve achieved, and significant economic and social benefits can be acquired. The preparation method of the regenerated micropowder alkaline residue clinker-free gel material is simple and convenient to operate, applicable to practical application and low in cost.

Description

technical field [0001] The present invention relates to a building material and its preparation method, in particular to a building gel material and its preparation method, and also to a building material prepared from construction waste and other industrial waste and its method, which can be used in waste resources, building materials and environmental protection technology. Background technique [0002] Construction waste refers to all kinds of waste generated during the demolition, repair, construction, decoration and other construction processes of buildings or structures. With the advancement of urbanization, a large amount of construction waste is produced every year, about 1.55-2.4 billion tons, accounting for 40% of urban waste. The disposal of these construction wastes generally adopts simple landfill treatment, which not only occupies a large amount of land, pollutes the environment, but also affects the appearance and environmental sanitation of the city to a cer...

Claims

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Application Information

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IPC IPC(8): C04B7/24C04B7/21C04B7/36
CPCC04B7/21C04B7/24C04B7/246C04B7/36Y02P40/10
Inventor 夏逸文孙家瑛
Owner SHANGHAI UNIV
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