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High-frost-resistance concrete and preparation method thereof

A concrete and high frost resistance technology, applied in the field of high frost resistance concrete and its preparation, can solve the problems of increased concrete slump loss, concrete construction performance decline, etc., to improve the frost resistance performance, reduce the water-cement ratio, The effect of improving physical properties

Active Publication Date: 2021-03-23
中意世兴实业(武汉)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the amount of water reducing agent should not be too much, otherwise the excessive water reducing agent will cause the slump loss of concrete to increase, and the construction performance of concrete will decrease

Method used

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  • High-frost-resistance concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high frost resistance concrete, its raw material components and dosage are shown in Table 1.

[0037] Table 1 embodiment 1-6 raw material component consumption table

[0038]

[0039] Among them, the antifreeze agent is calcium chloride.

[0040] The particle size of silica gel powder is 150-250μm, and the specific surface area is 300-400m 2 / g, the pore size is 80-100A°.

[0041] The water reducer is sodium lignosulfonate.

[0042] This embodiment also provides a method for preparing frost-resistant concrete, which includes the following steps: S1. Main ingredient mixing: mix fine sand and Portland cement and stir evenly, add gravel and mix evenly to obtain the premixed main ingredient ; S2. Mixing of auxiliary materials: silica gel powder and bentonite are mixed and stirred evenly, adding polypropylene fiber and 40% water, and stirred evenly to obtain slurry auxiliary materials;

[0043] S3. Additive mixing: Add the slurry auxiliary material obtained in the S...

Embodiment 2

[0045] A high frost resistance concrete, its raw material components and dosage are shown in Table 1.

[0046] Among them, the antifreeze agent is calcium chloride.

[0047] The particle size of silica gel powder is 150-250μm, and the specific surface area is 300-400m 2 / g, the pore size is 80-100A°.

[0048] The water reducer is sodium lignosulfonate.

[0049] This embodiment also provides a method for preparing frost-resistant concrete, which includes the following steps: S1. Main ingredient mixing: mix fine sand and Portland cement and stir evenly, add gravel and mix evenly to obtain the premixed main ingredient ; S2. Mixing of auxiliary materials: silica gel powder and bentonite are mixed and stirred evenly, adding polypropylene fiber and 40% water, and stirred evenly to obtain slurry auxiliary materials;

[0050] S3. Additive mixing: Add the slurry auxiliary material obtained in the S2 step to the premixed main material obtained in the S1 step, stir while adding the slur...

Embodiment 3

[0052] A kind of concrete with high frost resistance, the difference between this embodiment and embodiment 2 is that its raw material components and dosage are shown in Table 1.

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Abstract

The invention relates to the field of concrete building materials, and particularly discloses high-frost-resistance concrete and a preparation method thereof. The high-frost-resistance concrete comprise the following raw materials in parts by weight: 800-1000 parts of gravels, 650-850 parts of fine sand, 250-300 parts of Portland cement, 100-130 parts of water, 50-80 parts of silica gel powder, 10-15 parts of bentonite, 5-10 parts of polypropylene fibers, 5-8 parts of a water reducing agent and 4-6 parts of an anti-freezing agent. The preparation method comprises the following steps: S1, mixing of main materials; S2, mixing of auxiliary materials; and S3, mixing of additives. The high-frost-resistance concrete disclosed by the invention has the advantages of excellent frost resistance andgood construction performance.

Description

technical field [0001] The application relates to the field of concrete building materials, more specifically, it relates to a high frost resistance concrete and a preparation method thereof. Background technique [0002] Our country has a vast territory, and a considerable part is in the severe cold zone, resulting in many hydraulic structures being damaged by freezing and thawing. Especially in the severe cold regions of Northeast China, most of the hydraulic commercial concrete buildings constructed are partially or extensively damaged by freezing and thawing to varying degrees. Therefore, the freeze-thaw damage of commercial concrete is one of the main problems of building aging diseases in my country, which seriously affects the long-term use and safe operation of buildings. [0003] The main factors affecting the frost resistance of concrete materials are the pore structure and water content in concrete. When the water content in the concrete material reaches a certa...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/76
CPCC04B28/04C04B2201/50C04B2111/76C04B14/02C04B14/064C04B14/104C04B16/0633C04B24/20C04B24/02C04B24/008C04B22/124C04B24/32C04B24/163C04B24/16C04B24/18C04B2103/304
Inventor 殷勇王婷肖宇
Owner 中意世兴实业(武汉)有限公司
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