Heat storage concrete and preparation method thereof

A technology for concrete and heat storage, applied in the field of building materials, can solve the problems of reduced heat storage and release efficiency, slow seepage, poor compatibility of concrete, etc.

Active Publication Date: 2021-09-10
北京民佳混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this phase change energy storage concrete, graphite is added to paraffin as a thermal conductivity additive to improve the thermal conductivity, heat storage and release efficiency of energy storage concrete, but because paraffi

Method used

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  • Heat storage concrete and preparation method thereof
  • Heat storage concrete and preparation method thereof
  • Heat storage concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Preparation example 1-3 of paraffin

[0039] In Preparation Examples 1-3, the silane coupling agent was selected from Guangzhou Suixin Chemical Co., Ltd., model KH550, and the graphite oxide was selected from Nanjing Xianfeng Nano Material Technology Co., Ltd., model NF003.

Example Embodiment

[0040] Preparation Example 1: Disperse 0.2kg of silane coupling agent, 2kg of graphite oxide and 5kg of water with ultrasonic wave at a power of 200W, adjust the pH to 4.5 with citric acid to obtain a graphite oxide dispersion, add 5kg of paraffin, and place in a water bath at 70°C Melt in medium, and then emulsify at 16000rpm for 30min to obtain paraffin.

Example Embodiment

[0041] Preparation Example 2: Disperse 0.3kg of silane coupling agent, 4kg of graphite oxide and 8kg of water with ultrasonic power of 250W, adjust the pH to 4.8 with citric acid to obtain graphite oxide dispersion, add 8kg of paraffin, and place in a water bath at 75°C Melt in medium, and then emulsify at 17000rpm for 25min to obtain paraffin.

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Abstract

The invention relates to the field of building materials, and particularly discloses heat storage concrete and a preparation method thereof. The heat storage concrete is prepared from the following components in parts by weight: 220 to 260 parts of cement, 900 to 1100 parts of coarse aggregate, 800 to 900 parts of fine aggregate, 140 to 180 parts of water, 4.8 to 8 parts of additive, 80 to 100 parts of fly ash, 3 to 8 parts of aramid fiber, 10 to 15 parts of graphite and 5 to 10 parts of microcapsule. A phase change core material of the microcapsule comprises paraffin, a wall material of the microcapsule comprises silicon dioxide, and the mass ratio of the phase change core material to the wall material is (3-5):10; and the paraffin is prepared from the following components in parts by weight: 2-6 parts of graphite oxide, 5-10 parts of water, 0.2-0.4 part of a silane coupling agent and 5-10 parts of paraffin. The heat storage concrete has the advantages of being good in heat storage performance, still high in heat storage and release efficiency after multiple cycles, good in durability, long in service life and high in heat cycle stability.

Description

technical field [0001] The application relates to the technical field of building materials, more specifically, it relates to a heat storage concrete and a preparation method thereof. Background technique [0002] The heat storage system is an indispensable part of the solar thermal power generation system, because a big disadvantage of solar energy is its instability. Had to close. In order to improve the working efficiency of the power station, it is required to operate normally during these intermittent times. To meet this requirement, a solar thermal power generation heat storage system must be introduced. In the solar thermal power generation system, considering the relatively large heat demand and the high construction and maintenance costs of the power station, the unique advantages of heat storage concrete technology are revealed. [0003] Heat storage concrete is a new type of cement-based composite material made by adding a certain amount of phase change heat sto...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2201/32C04B14/06C04B14/02C04B18/08C04B24/36C04B16/0691C04B24/121C04B14/024C04B24/005C04B24/42C04B2103/302Y02W30/91
Inventor 谢玲丽
Owner 北京民佳混凝土有限公司
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