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Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof

An anti-corrosion and concrete technology, applied in anti-corrosion concrete and its preparation, in the field of anti-corrosion iron tailings aggregate, can solve the problems affecting the anti-corrosion performance of impermeable iron tailings concrete, the fluctuation of concrete quality, fineness and The problems of mud content and control indicators of harmful substances are uncontrollable, so as to reduce the energy consumption of mining, improve the compactness and reduce the cost of main materials.

Inactive Publication Date: 2020-01-17
中建西部建设北方有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the iron tailings powder in this patent has uncontrollable control indicators on the fineness, mud content and harmful substances in the application process, it is easy to cause fluctuations in the quality of the concrete, especially affecting the resistance of the impermeable iron tailings concrete. corrosion performance

Method used

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  • Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof
  • Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A corrosion-resistant iron tailings aggregate, including the following components: tailings with particle sizes of six grades: 25mm, 20mm, 15mm, 10mm, 4mm and 3mm;

[0049] The mass percentages of the tailings at various levels are 4%, 22%, 24%, 26%, 18% and 6% respectively.

Embodiment 2

[0051] A corrosion-resistant iron tailings aggregate, including the following components: tailings with particle sizes of 27mm, 18mm, 17mm, 8mm, 5mm and 2mm in six grades;

[0052] The mass percentages of the tailings at various levels are 6%, 18%, 26%, 24%, 22% and 4% respectively.

Embodiment 3

[0054] A corrosion-resistant iron tailings aggregate, including the following components: tailings with particle sizes of six grades: 26.5mm, 19.0mm, 16.0mm, 9.5mm, 4.75mm and 2.36mm;

[0055] The mass percentages of the tailings at various levels are 5%, 20%, 25%, 25%, 20% and 5% respectively.

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Abstract

The invention discloses a corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and a preparation method thereof and belongs to the technical field of concrete production. Accordingto the technical scheme, the corrosion-resistant iron tailing aggregate comprises the following components: six graded tailing ores of which the particle sizes are 25-27mm, 18-20mm, 15-17mm, 8-10mm,4-5mm and 2-3mm, wherein the mass percentages of the graded tailings ores are 4-6%, 18-22%, 24-26%, 24-26%, 18-22% and 4-6% respectively. The void fraction of the aggregate can be significantly reduced, the compactness of the iron tailing aggregate is high, and the effect of enhancing the corrosion resistance of the iron tailing aggregate is achieved. The invention further discloses corrosion-resistant concrete which comprises the corrosion-resistant iron tailing aggregate. The corrosion resistance, fall resistance and durability of the concrete can be improved.

Description

technical field [0001] The invention relates to the technical field of concrete production technology, in particular to corrosion-resistant iron tailings aggregate, corrosion-resistant concrete and a preparation method thereof. Background technique [0002] Iron tailings are the waste after mineral processing and are the main component of industrial solid waste. Judging from the current situation of my country's application of iron tailings in the field of concrete production technology, iron tailings are mostly used as a substitute for concrete fine aggregate, and the replacement rate is limited. For example, Chinese patent CN107399948A discloses a high-strength concrete mixed with iron tailings sand, and its iron tailings replacement rate is about 22%. Chinese patent CN101671146A discloses a kind of iron tailings concrete that partially or completely replaces natural aggregates. In this method, only the mineral processing waste rocks are cleaned, crushed, and sieved to be...

Claims

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Application Information

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IPC IPC(8): C04B18/12C04B28/04C04B111/20
CPCC04B18/12C04B28/04C04B2111/20C04B2111/2015C04B2201/20C04B14/04C04B2103/302C04B18/08C04B14/06C04B14/303C04B20/0076Y02W30/91
Inventor 李微罗作球王军陈良李磊张凯峰丁路静何明庆
Owner 中建西部建设北方有限公司
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