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Ultra-high performance concrete containing smelting slag and preparation method thereof

An ultra-high performance, smelting slag technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of high cost of ultra-high performance concrete, high environmental protection cost and energy consumption rate, and achieve Avoid electrochemical reactions, promote the formation of early strength, and improve the effect of early strength

Active Publication Date: 2022-04-26
建研建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ultra-high performance concrete needs to use high-grade quartz sand as aggregate, and the weight ratio is often as high as 40% to 60%, resulting in high cost of ultra-high performance concrete
Moreover, the mining and preparation of high-grade quartz sand has brought high environmental protection costs and energy consumption rates

Method used

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  • Ultra-high performance concrete containing smelting slag and preparation method thereof
  • Ultra-high performance concrete containing smelting slag and preparation method thereof
  • Ultra-high performance concrete containing smelting slag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: A kind of ultra-high performance concrete containing smelting slag and its preparation method

[0037] The ultra-high performance concrete containing smelting slag provided in this example includes the following components in parts by weight: 664 parts of cement, 51 parts of silica fume, 204 parts of fly ash, 102 parts of slag powder, and 156 parts of modified steel fiber 184 parts of water, 594 parts of quartz sand and 594 parts of ferrochrome slag.

[0038] Its preparation method comprises the following steps:

[0039] S1, uniformly mix cement, silica fume, fly ash and slag powder;

[0040] S2, adding water to step S1, stirring to form a mixture;

[0041] S3, add quartz sand and ferrochrome slag in step S2, stir evenly;

[0042] S4. Add modified steel fibers to step S3, and stir evenly.

Embodiment 2

[0043] Example 2: A kind of ultra-high performance concrete containing smelting slag and its preparation method

[0044] The ultra-high performance concrete containing smelting slag provided in this example includes the following components in parts by weight: 664 parts of cement, 51 parts of silica fume, 204 parts of fly ash, 102 parts of slag powder, and 156 parts of modified steel fiber 184 parts of water, 891 parts of quartz sand and 297 parts of ferrochrome slag.

[0045] Its preparation method comprises the following steps:

[0046] S1, uniformly mix cement, silica fume, fly ash and slag powder;

[0047] S2, adding water to step S1, stirring to form a mixture;

[0048]S3, add quartz sand and ferrochrome slag in step S2, stir evenly;

[0049] S4. Add modified steel fibers to step S3, and stir evenly.

Embodiment 3

[0050] Example 3: A kind of ultra-high performance concrete containing smelting slag and its preparation method

[0051] The ultra-high performance concrete containing smelting slag provided in this example includes the following components in parts by weight: 664 parts of cement, 51 parts of silica fume, 204 parts of fly ash, 102 parts of slag powder, and 156 parts of modified steel fiber 184 parts of water, 309 parts of quartz sand and 891 parts of ferrochrome slag.

[0052] Its preparation method comprises the following steps:

[0053] S1, uniformly mix cement, silica fume, fly ash and slag powder;

[0054] S2, adding water to step S1, stirring to form a mixture;

[0055] S3, add quartz sand and ferrochrome slag in step S2, stir evenly;

[0056] S4. Add modified steel fibers to step S3, and stir evenly.

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Abstract

The invention belongs to the technical field of engineering materials, and particularly relates to ultra-high performance concrete containing smelting slag and a preparation method of the ultra-high performance concrete. According to the technical key points, the concrete is prepared from the following components in parts by weight: 500 to 1000 parts of cement, 30 to 80 parts of silica fume, 150 to 300 parts of fly ash, 80 to 140 parts of slag powder, 100 to 200 parts of modified steel fiber, 100 to 200 parts of water and 800 to 1500 parts of coarse aggregate, wherein the coarse aggregate is smelting slag or a mixture of smelting slag and quartz sand. The smelting slag is used for partially or completely replacing the high-strength natural aggregate, the ultra-high performance concrete with the performance meeting the requirement can be prepared, the strength is improved, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of engineering materials, and in particular relates to ultra-high performance concrete containing smelting slag and a preparation method thereof. Background technique [0002] The massive consumption of sand and gravel has led to less and less natural sand and gravel available for mining. my country's sand and gravel resources are very scarce, and some areas even have over-exploited sand and gravel, which has caused serious damage to the environment. The shortage of resources and related environmental protection policies lead to rising prices of sand and gravel, which directly affects the progress and cost of construction projects. Therefore, in the face of the contradiction between development, environment and resources, it is urgent to find substitutes for natural sand and gravel. At present, for the development and utilization of solid waste, it is an important measure to use it as an alternative aggregat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/14C04B14/06C04B20/02
CPCC04B28/00C04B18/141C04B14/06C04B20/023C04B2201/50C04B18/146C04B18/08C04B14/48C04B22/002Y02W30/91
Inventor 关青锋周永祥贺阳
Owner 建研建材有限公司
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