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Phase-change energy-storage geopolymer concrete as well as preparation method and application thereof

A geopolymer and phase change energy storage technology, which is applied in cement production and other directions, can solve the problems of poor compatibility between phase change materials and concrete matrix, and achieve the effects of improving storage and release efficiency, preventing package failure, and improving thermal conductivity

Inactive Publication Date: 2021-01-12
CHONGQING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the phase change energy storage geopolymer concrete of the present invention, the surface layer of the phase change spheroids and the concrete matrix are geopolymers, the two can be effectively combined, and it is not easy to crack, which effectively solves the problem of poor compatibility between the phase change material and the concrete matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0032]1. A preparation of phase change pellets, including the following steps:

[0033](1) In parts by weight, weigh the following substances: 28 parts of fly ash, 22 parts of water glass, 10 parts of potassium hydroxide, 15 parts of steel slag powder (particle size ≤45μm), 1.4 parts of barium chloride, graphite powder 15 parts, 8 parts boric acid, 15 parts water, set aside.

[0034](2) Add the barium chloride, boric acid, and potassium hydroxide in step (1) to water, stir evenly, then add fly ash, steel slag powder and water glass, and stir evenly to obtain geopolymer slurry for use.

[0035](3) Weigh NaNO according to the weight ratio of 7:33The phase change material and the geopolymer slurry obtained in step (2) are mixed uniformly to make the geopolymer slurry wrap the phase change material, and then granulate, steam, and dry to a constant weight at one time. The pressure of the granulation is 5MPa, the steaming temperature is 48°C, and the steaming time is 3h. After completion, phase ch...

no. 2 example

[0045]1. A preparation of phase change pellets, including the following steps:

[0046](1) In parts by weight, weigh out the following substances: 22 parts of fly ash, 25 parts of water glass, 18 parts of potassium hydroxide, 24 parts of steel slag powder (particle size≤45μm), 3 parts of barium chloride, graphite powder 18 parts, 5 parts boric acid, 16 parts water, set aside.

[0047](2) Add the barium chloride, boric acid, and potassium hydroxide in step (1) to water, stir evenly, then add fly ash, steel slag powder and water glass, and stir evenly to obtain geopolymer slurry for use.

[0048](3) Weigh NaNO according to the weight ratio of 7:33The phase change material and the geopolymer slurry obtained in step (2) are mixed uniformly to make the geopolymer slurry wrap the phase change material, and then granulate, steam, and dry to a constant weight at one time. The pressure of the granulation is 5MPa, the steaming temperature is 48°C, and the steaming time is 3h. After completion, phase c...

no. 3 example

[0058]1. A preparation of phase change pellets, including the following steps:

[0059](1) In parts by weight, weigh out the following substances: 28 parts of fly ash, 30 parts of water glass, 19 parts of potassium hydroxide, 15 parts of steel slag powder (particle size≤45μm), 4 parts of barium chloride, graphite powder 18 parts, 7 parts boric acid, 18 parts water, set aside.

[0060](2) Add the barium chloride, boric acid, and potassium hydroxide in step (1) to water, stir evenly, then add fly ash, steel slag powder and water glass, and stir evenly to obtain geopolymer slurry for use.

[0061](3) Weigh NaNO according to the weight ratio of 7:33The phase change material and the geopolymer slurry obtained in step (2) are mixed uniformly to make the geopolymer slurry wrap the phase change material, and then granulate, steam, and dry to a constant weight at one time. The pressure of the granulation is 5MPa, the steaming temperature is 48°C, and the steaming time is 3h. After completion, phase c...

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Abstract

The invention relates to the technical field of concrete preparation, in particular to phase change energy storage geopolymer concrete as well as a preparation method and application thereof. The concrete comprises 32-50 parts of fly ash, 28-40 parts of red mud, 20-34 parts of water glass, 10-38 parts of alkali metal hydroxide, 20-35 parts of steel slag powder, 43-52 parts of steel slag aggregateand 22-35 parts of phase change spherical particles, the phase change spherical particles comprise geopolymers and phase change materials, and the geopolymers comprise the following components in parts by weight: 20-30 parts of fly ash, 20-30 parts of water glass, 5-20 parts of potassium hydroxide, 12-25 parts of steel slag powder, 1-5 parts of barium chloride, 12-20 parts of graphite powder, 2-10parts of boric acid and 10-18 parts of water. According to the phase-change energy-storage geopolymer concrete, the phase-change spherical particle surface layer can be effectively combined with theconcrete and is not prone to cracking, and the problem that the compatibility of a phase-change material and a concrete matrix is poor is solved.

Description

Technical field[0001]The invention relates to the technical field of concrete preparation, in particular to a phase change energy storage polymer concrete and a preparation method and application thereof.Background technique[0002]Disclosure of the background information is only intended to increase the understanding of the overall background of the present invention, and is not necessarily regarded as an acknowledgement or in any form suggesting that the information constitutes the prior art known to those of ordinary skill in the art.[0003]Solar energy stands out by virtue of its unlimited reserves, universality, cleanness of utilization and safety of use, and ranks first in the world's various energy growth rates. However, in the process of utilization, the storage and effective utilization of solar energy has always been a prominent problem currently faced. Phase-change energy storage technology is a new type of environmentally friendly energy-saving technology that can alleviate...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B40/02
CPCC04B28/26C04B40/024C04B2201/32C04B18/08C04B18/0409C04B18/142C04B22/062C04B22/0013C04B22/124C04B14/024C04B22/085Y02P40/10
Inventor 江晨光霞刘明月
Owner CHONGQING UNIV OF TECH
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