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A kind of high performance concrete prepared by using coal water slurry slag

A high-performance concrete and coal-water slurry slag technology, applied in cement production and other directions, can solve the problems of low density of coal-water slurry slag, poor concrete performance, large water absorption, etc., to reduce treatment costs, improve strength and durability. , the effect of reducing pollution

Active Publication Date: 2016-02-10
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the density of coal water slurry slag itself is small, and the water absorption capacity is large. If it is directly added to concrete, its activity cannot play a good role, which will make the performance of concrete worse.

Method used

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  • A kind of high performance concrete prepared by using coal water slurry slag
  • A kind of high performance concrete prepared by using coal water slurry slag
  • A kind of high performance concrete prepared by using coal water slurry slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for high-performance concrete, comprising the steps of:

[0022] (1) Prepare raw materials such as cement, coal water slurry slag, water, stone powder, crushed stone, water reducing agent, water reducing agent and activator according to the formula in Table 1; the amount of coal water slurry slag accounts for 10% of the cementitious material %;

[0023] (2) Dry mix cement, coal water slurry slag, stone powder, gravel and activator for 60 seconds to obtain a dry mix;

[0024] (3) Pour the water reducing agent into water and mix to obtain the water agent, then add the water agent to the dry mix obtained in step (1), and stir for 120 seconds to obtain the high performance concrete.

[0025] Table 1 The ratio of raw materials per cubic meter of concrete (unit: kg / m 3 )

[0026]

[0027] The high-performance concrete prepared in this embodiment was tested according to the mechanical properties, and the test found that its 3-day compressive strength...

Embodiment 2

[0029] A preparation method for high-performance concrete, comprising the steps of:

[0030] (1) Prepare raw materials such as cement, coal water slurry slag, water, stone powder, crushed stone, water reducing agent, water reducing agent and activator according to the formula in Table 2; the amount of coal water slurry slag accounts for 15% of the cementitious material %;

[0031] (2) Dry mix cement, coal water slurry slag, stone powder, gravel and activator for 80 seconds to obtain a dry mix;

[0032] (3) Pour the water reducing agent into water and mix to obtain the water agent, then add the water agent to the dry mix obtained in step (1), and stir for 150 seconds to obtain the high-performance concrete.

[0033] Table 2 The ratio of raw materials per cubic meter of concrete (unit: kg / m 3 )

[0034]

[0035] The high-performance concrete prepared in this embodiment was tested for mechanical properties, and the test found that its 3-day compressive strength was 70.2MPa,...

Embodiment 3

[0037] A preparation method for high-performance concrete, comprising the steps of:

[0038] (1) Prepare raw materials such as cement, coal water slurry slag, water, stone powder, crushed stone, water reducer, water reducer and activator according to the formula in Table 3; the amount of coal water slurry slag accounts for 20% of the cementitious material %;

[0039] (2) Dry mix cement, coal water slurry slag, stone powder, gravel and activator for 90 seconds to obtain a dry mix;

[0040] (3) Pour the water reducing agent into water and mix to obtain the water agent, then add the water agent to the dry mix obtained in step (1), and stir for 180 seconds to obtain the high-performance concrete.

[0041] Table 3 The ratio of raw materials per cubic meter of concrete (unit: kg / m 3 )

[0042]

[0043] The high-performance concrete prepared in this embodiment was tested for mechanical properties, and the test found that its 3-day compressive strength was 69.2MPa, and the 28-da...

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Abstract

The invention discloses high-performance concrete prepared by utilizing coal-water slurry slag. The high-performance concrete is composed of cement, water, stone powder, broken stone, water-coal slurry slag, a water reducer and an excitant. By utilizing water-coal slurry slag as a mineral admixture of concrete, a large amount of water-coal slurry slag is effectively consumed, the processing cost of ceramic enterprises is reduced, the environmental pollution is reduced, and the reaction activity of water-coal slurry slag is fully utilized. The prepared concrete is high in strength and extremely good in durability.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-performance concrete prepared by using coal water slurry slag. Background technique [0002] Coal water slurry slag is the waste residue left after the coal water slurry is burned. In the ceramic industry, the coal water slurry is burned to roast ceramics, so a large amount of coal water slurry slag will be produced in the ceramic industry. As a kind of industrial solid waste, coal water slurry slag is currently disposed of except for a small amount of resource recovery and reuse, and most of the others are transported to the suburbs for stacking or landfill treatment, which not only occupies a large amount of land, And long-term stacking will pollute the soil and groundwater. [0003] Concrete is the most used building material in the world. With the development of economy and the continuous advancement of urbanization, the demand for high-performance concre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B7/28
CPCY02P40/10
Inventor 欧阳东
Owner JINAN UNIVERSITY
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