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Anti-crack and anti-freeze concrete and preparation method thereof

A technology for antifreeze concrete and mixed liquid, applied in the field of concrete preparation, can solve problems such as cracking and poor quality of construction materials, and achieve the effects of improving service performance, avoiding cracks and reducing free water.

Active Publication Date: 2020-12-29
河南五建混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-crack and anti-freeze concrete and its preparation method, so as to solve the problem of cracking and other phenomena that will occur when the concrete is frozen under the condition of low temperature, thus resulting in poor quality of construction materials

Method used

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  • Anti-crack and anti-freeze concrete and preparation method thereof

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preparation example Construction

[0012] The invention provides a kind of preparation method of anti-crack antifreeze concrete, wherein, comprise the following steps:

[0013] A) Mix sodium gluconate, sodium dodecylbenzenesulfonate, water reducing agent, soluble inorganic salt, methanol and water to prepare M1;

[0014] B) Crushing the aggregate until the particle size is not greater than 20mm;

[0015] C) Mix and stir M1, crushed aggregate, cement, fly ash, fiber and water under stirring conditions to prepare anti-crack and anti-freeze concrete.

[0016] The present invention has the following beneficial effects: sodium gluconate of the present invention, sodium dodecylbenzenesulfonate, water reducing agent, soluble inorganic salt, methanol and water are first mixed to obtain M1, and then the M1 is crushed until the particle size is equal to Aggregate, cement, fly ash, fiber and water larger than 20mm are mixed and stirred, so that the water in the concrete made in this way and raw materials can be effective...

Embodiment 1

[0030] 1) Put 10 parts by weight of sodium gluconate, 5 parts by weight of sodium dodecylbenzenesulfonate, 30 parts by weight of calcium lignosulfonate, 10 parts by weight of potassium nitrate and 100 parts by weight of water at a temperature of 40 Stir and mix under the condition of ℃ to obtain the mixed solution N1;

[0031] 2) Under stirring conditions, add 10 parts by weight of methanol dropwise to the mixed solution N1 to prepare M1;

[0032] 3) Break the aggregate (composed of crushed stone and medium sand in a weight ratio of 1:2) to a particle size not greater than 20mm;

[0033] 4) Under stirring conditions, mix 2 parts by weight of M1, 150 parts by weight of crushed aggregate, 100 parts by weight of Portland cement, 10 parts by weight of fly ash, 5 parts by weight of glass fiber and 40 parts by weight Parts of water were mixed and stirred to prepare anti-crack and anti-freeze concrete A1.

Embodiment 2

[0035] 1) Put 20 parts by weight of sodium gluconate, 15 parts by weight of sodium dodecylbenzenesulfonate, 50 parts by weight of calcium lignosulfonate, 20 parts by weight of sodium carbonate and 100 parts by weight of water at a temperature of 70 Stir and mix under the condition of ℃ to obtain the mixed solution N1;

[0036] 2) Under stirring conditions, add 15 parts by weight of methanol dropwise to the mixed solution N1 to prepare M1;

[0037] 3) Break the aggregate (composed of crushed stone and medium sand in a weight ratio of 1:2) to a particle size not greater than 20mm;

[0038] 4) Under stirring conditions, mix 8 parts by weight of M1, 220 parts by weight of crushed aggregate, 100 parts by weight of Portland cement, 30 parts by weight of fly ash, 15 parts by weight of glass fiber and 50 parts by weight Parts of water were mixed and stirred to prepare anti-crack and anti-freeze concrete A2.

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Abstract

The invention provides anti-crack and anti-freeze concrete and a preparation method thereof. The preparation method comprises the following steps: (A) mixing sodium gluconate, sodium dodecyl benzene sulfonate, a water reducing agent, soluble inorganic salt, methyl alcohol and water, so as to prepare M1; (B) crushing aggregates into particles with a particle size less than 20 mm; (C) under a stirring condition, mixing and stirring the M1, the crushed aggregates, cement, coal ash, fiber and water to prepare the anti-crack and anti-freeze concrete. The problem of relatively low building quality due to phenomena of frozen cracks of the concrete under a relatively low temperature condition and the like is solved.

Description

technical field [0001] The invention relates to the field of concrete preparation, in particular to a crack-resistant and antifreeze concrete and a preparation method thereof. Background technique [0002] As an important material in construction engineering, concrete is widely used in bridge engineering, highway engineering, water conservancy engineering and other engineering fields. However, there is a lot of free water in concrete. When the temperature drops below 0°C, the free water in concrete will start to freeze. Although the gel water in the crystal body has not yet frozen, the hydration reaction at this time It is very weak and can be regarded as basically stopped. As the temperature continues to drop, a large amount of free water freezes, and the volume of free water expands, resulting in the expansion of concrete volume and loose organization, which eventually leads to serious damage to its strength. The concrete in the wetlands of the Yangtze River and the Yello...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/29C04B2201/52C04B24/10C04B24/20C04B24/18C04B22/085C04B24/02C04B18/08C04B14/42C04B14/02C04B14/06C04B24/128C04B22/124
Inventor 平自要陈九安张玉平刘大路代步青张勇张振翟卫东
Owner 河南五建混凝土有限公司
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