High-compactness thermal-storage concrete and preparation method thereof

A concrete and dense technology, which is applied in the field of high-density heat storage concrete and its preparation, can solve the problems of low heat storage density of sensible heat storage concrete, and achieve the effects of small heat storage density, simple preparation method, and low production cost

Inactive Publication Date: 2013-01-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low heat storage density of sensible heat storage concrete, the present invention provides a high-density heat storage concrete with high heat storage efficiency and small volume by changing the specific gradation of aggregates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 13.0% sulfoaluminate cement, 1.8% slag powder, 3.7% graphite, 6.6% water, 74.5% aggregate, 0.4% water reducer, which account for the total weight of the high-density heat storage concrete to be prepared ; The aggregate is divided into fine aggregate and coarse aggregate, the fine aggregate is steel slag, and the coarse aggregate is basalt; the specific surface area of ​​graphite is 380m 2 / Kg;

[0033] The particle size gradation of aggregates and the weight fraction of aggregates of each particle size in the total aggregate are as follows:

[0034] Steel slag particle size % by weight in aggregate Basalt particle size % by weight in aggregate 0.075~0.15mm 2.56 2.36~4.75mm 17.36 0.15~0.3mm 3.75 4.75~9.5mm 25.05 0.3~0.6mm 5.72 9.50~16mm 26.04 0.6~1.18mm 7.89 1.18~2.36mm 11.64

[0035] ;

[0036] Take half of the above total water and stir it with sulphoaluminate cement, slag powder and ...

Embodiment 2

[0041] Take 14.9% sulfoaluminate cement, 2.1% slag powder, 4.2% graphite, 7.4% water, 71.2% aggregate, 0.2% water reducer, which account for the total weight of the high-density heat storage concrete to be prepared ; The aggregate is divided into fine aggregate and coarse aggregate, the fine aggregate is steel slag, and the coarse aggregate is basalt; the specific surface area of ​​graphite is 350m 2 / Kg;

[0042] The particle size gradation of aggregates and the weight fraction of aggregates of each particle size in the total aggregate are as follows:

[0043] Steel slag particle size % by weight in aggregate Basalt particle size % by weight in aggregate 0.075~0.15mm 3.52 2.36~4.75mm 17.49 0.15~0.3mm 5.00 4.75~9.5mm 23.31 0.3~0.6mm 6.94 9.50~16mm 22.61 0.6~1.18mm 8.95 1.18~2.36mm 12.18

[0044] ;

[0045] Take half of the above total water and stir it with sulphoaluminate cement, slag powder an...

Embodiment 3

[0050] Take 20.3% sulfoaluminate cement, 1.2% slag powder, 2.4% graphite, 7.2% water, 68.2% aggregate, 0.7% water reducer, which account for the total weight of the high-density heat storage concrete to be prepared ; The aggregate is divided into fine aggregate and coarse aggregate, the fine aggregate is steel slag, and the coarse aggregate is basalt; the specific surface area of ​​graphite is 300m 2 / Kg;

[0051] The particle size gradation of aggregates and the weight fraction of aggregates of each particle size in the total aggregate are as follows:

[0052] Steel slag particle size % by weight in aggregate Basalt particle size % by weight in aggregate 0.075~0.15mm 5.37 2.36~4.75mm 19.42 0.15~0.3mm 7.02 4.75~9.5mm 17.77 0.3~0.6mm 8.68 9.50~16mm 16.12 0.6~1.18mm 11.16 1.18~2.36mm 14.46

[0053] ;

[0054] The compressive strength of the prepared high-density heat storage concrete is ≥50MPa, an...

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Abstract

The invention relates to a high-compactness thermal-storage concrete and a preparation method thereof, and belongs to the technical field of the thermal-storage material. The high-compactness thermal-storage concrete disclosed by the invention is prepared from 12.0-26.0 parts of sulphoaluminate cement, 65.0-80.0 parts of aggregate consisting of steel slag and basalt, 1.0-5.0 parts of graphite, 1.0-5.0 parts of slag powder, 3.0-10.0 parts of water and 0.1-1.0 part of water reducing agent. The gradation of the aggregate is designed by vast experiments, so that the aggregate accumulation achieves the tight accumulation state, the self compactness of the concrete is improved, and the problem of small thermal-storage density of the concrete is fundamentally solved. Therefore, the high-compactness thermal-storage concrete disclosed by the invention has excellent thermal performances, such as big thermal-storage density and good thermal conductivity. The preparation method disclosed by the invention has a simple method and is easy to operate. Because the steel slag is used as the fine aggregate, the industrial waste slag is fully utilized, and the production cost is lowered.

Description

technical field [0001] The invention relates to a high-density thermal storage concrete and a preparation method thereof, belonging to the technical field of thermal storage materials. Background technique [0002] The energy problem is a major problem facing the world today. In my country, with the adjustment and development of the national economy, the energy problem has become a bottleneck problem restricting my country's economic development. In many industrial and building heating and other energy utilization systems, there are often differences in energy supply and demand time, resulting in a lot of waste of energy utilization. One of the effective ways to solve this problem is to adopt heat storage technology. [0003] According to the way of heat storage, heat storage materials can be divided into four categories: sensible heat heat storage materials, phase change heat storage materials, thermochemical heat storage materials and adsorption heat storage materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
Inventor 芦令超马蕊宫晨琛王守德程新
Owner UNIV OF JINAN
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