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Preparation method of reduced copper slag concrete

A technology of concrete and copper slag, which is applied in the field of preparation of shrinkage-reducing copper slag concrete, can solve the problems that hinder the application of copper slag powder, complex influence on workability, mechanical properties and durability, and high content of heavy metals

Inactive Publication Date: 2021-03-16
中建西部建设新疆有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the problems of low activity and high content of heavy metals, the influence of copper slag powder on concrete workability, mechanical properties and durability is much more complicated than that of common admixtures such as slag and fly ash, which hinders copper slag powder from being used as an admixture Application in concrete

Method used

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  • Preparation method of reduced copper slag concrete
  • Preparation method of reduced copper slag concrete
  • Preparation method of reduced copper slag concrete

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] refer to Figure 1 ~ Figure 2 As shown, the preparation method of the shrinkage-reducing copper slag concrete in an embodiment provided by the invention may further comprise the steps:

[0023] Step 1, activating copper slag by high-temperature calcination;

[0024] Step 2, the copper slag is subjected to ultra-fine airflow grinding to form copper slag powder;

[0025] Step 3, using copper slag powder as raw material to prepare concrete.

[0026] Further, in the above step 1, the specific process of calcination and activation of the copper slag at high temperature is: calcining the copper slag in a furnace at 950-1000°C for 30 minutes, cooling the copper slag in water after calcination, and then drying it to a constant weight .

[0027] Further, in said step 2, the specific process of ultrafine airflow grinding of copper slag is as follows:...

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Abstract

The invention discloses a preparation method of reduced copper slag concrete. The preparation method comprises the following steps: calcining and activating copper slag at high temperature; carrying out ultramicro airflow grinding on the copper slag to form copper slag powder; taking the copper slag powder as a raw material for preparing concrete. The elasticity modulus of the concrete is improved, the shrinkage is reduced, the fracture resistance of the concrete is obviously improved, and the durability grade of the concrete is improved.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of smelting solid waste, in particular to a method for preparing shrinkage-reducing copper slag concrete. Background technique [0002] The current copper slag treatment is still dominated by stacking, which not only takes up a lot of land, but also causes serious environmental pollution to the stacking area due to heavy metal components. At present, copper slag has been explored as concrete aggregate and cement raw material in terms of resource utilization of building materials. [0003] Research results in recent years have shown that the vitreous content in the water-quenched copper slag is high and the activity is better, while the slow-cooled copper slag we use has a low vitreous content, but still has a certain activity. Due to the problems of low activity and high content of heavy metals, the influence of copper slag powder on concrete workability, mechanical properties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00C04B28/00C04B111/20
CPCC04B5/00C04B28/00C04B2111/20C04B18/144C04B14/02C04B14/06C04B18/08C04B18/141C04B2103/302
Inventor 孟书灵古龙龙张平王军艾洪祥陈旭韩世界
Owner 中建西部建设新疆有限公司
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