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High-impermeability anti-crack concrete and preparation process thereof

A concrete and high-resistance technology, applied in the field of high-impermeability and anti-crack concrete and its preparation, can solve the problems of reducing the service life of concrete, cracking, and general concrete impermeability.

Inactive Publication Date: 2021-07-20
浙江华滋奔腾建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The impermeability of the existing concrete is average, and after a period of regular use, it is prone to cracking due to untimely maintenance, which greatly reduces the service life of the concrete

Method used

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  • High-impermeability anti-crack concrete and preparation process thereof
  • High-impermeability anti-crack concrete and preparation process thereof
  • High-impermeability anti-crack concrete and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A high impermeability and anti-cracking concrete, comprising the following raw materials in parts by weight: 100 parts of cement, 30 parts of fly ash, 35 parts of sand, 5 parts of calcium lignosulfonate, 20 parts of reinforcing emulsion, and 10 parts of ethylenediamine;

[0041] Described high impermeability concrete is made by following steps:

[0042] Step S1: Add fly ash, sand, and enhanced emulsion into a ball mill for ball milling until the specific surface area is 500m 2 / kg, the particle size is 10 μm, and the first mixed slurry is obtained;

[0043] Step S2: adding the first mixed slurry, cement, and calcium lignosulfonate into the stirring tank, and stirring until uniform at a rotating speed of 200 r / min to obtain the second mixed slurry;

[0044] Step S3: Add the second mixed slurry and ethylenediamine into the stirring tank, and stir until uniform at a rotating speed of 150 r / min to prepare high impermeability concrete.

[0045] Described enhanced emulsion is...

Embodiment 2

[0051] A high impermeability and anti-cracking concrete, comprising the following raw materials in parts by weight: 105 parts of cement, 33 parts of fly ash, 35 parts of sand, 6 parts of calcium lignosulfonate, 34 parts of reinforcing emulsion, and 12 parts of ethylenediamine;

[0052] Described high impermeability concrete is made by following steps:

[0053] Step S1: Add fly ash, sand, and enhanced emulsion into a ball mill for ball milling until the specific surface area is 500m 2 / kg, the particle size is 15 μm, and the first mixed slurry is obtained;

[0054] Step S2: adding the first mixed slurry, cement, and calcium lignosulfonate into the stirring tank, and stirring until uniform at a rotating speed of 200 r / min to obtain the second mixed slurry;

[0055] Step S3: Add the second mixed slurry and ethylenediamine into the stirring tank, and stir until uniform at a rotating speed of 200 r / min to prepare high-impermeability concrete.

[0056] Described enhanced emulsion ...

Embodiment 3

[0062] A high impermeability and anti-cracking concrete, comprising the following raw materials in parts by weight: 115 parts of cement, 38 parts of fly ash, 45 parts of sand, 7 parts of calcium lignosulfonate, 28 parts of reinforcing emulsion, and 14 parts of ethylenediamine;

[0063] Described high impermeability concrete is made by following steps:

[0064] Step S1: Add fly ash, sand, and enhanced emulsion into a ball mill for ball milling until the specific surface area is 800m 2 / kg, the particle size is 10 μm, and the first mixed slurry is obtained;

[0065] Step S2: Add the first mixed slurry, cement, and calcium lignosulfonate into the stirring tank, and stir until uniform at a rotating speed of 300 r / min to obtain the second mixed slurry;

[0066] Step S3: Add the second mixed slurry and ethylenediamine into the stirring tank, and stir until uniform at a rotating speed of 150 r / min to prepare high impermeability concrete.

[0067] Described enhanced emulsion is made...

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Abstract

The invention discloses high-impermeability anti-crack concrete and a preparation process thereof. The high-impermeability concrete is composed of the following raw materials in parts by weight: 100-120 parts of cement, 30-40 parts of fly ash, 35-50 parts of sand, 5-8 parts of a water reducing agent, 20-30 parts of a reinforced emulsion and 10-15 parts of ethylenediamine. The reinforced emulsion is prepared in the process of preparing the high-impermeability concrete; long-chain alkyl is grafted on the surface of a pre-modified carbon nanotube, and the long-chain alkyl has a good hydrophobic effect, so that the concrete is not prone to water seepage; meanwhile, the reinforced emulsion and ethylenediamine are added, and modified fibers in the reinforced emulsion are dispersed in the concrete, and under the action of ethylenediamine, the epoxy group on the surface of the modified fibers is subjected to ring opening and is fixed with the concrete, so that the concrete is not easy to crack, the service life of the concrete is prolonged, and the impermeability effect is better.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a high impermeability and crack resistance concrete and a preparation process thereof. Background technique [0002] Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. These characteristics make it widely used, not only in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engineering, etc. Concrete is also an important material. [0003] With the continuous development of concrete composition materials, people's performance requirements for concrete are not limited to compressive strength, but on the basis of strength, more attention is paid to the durability, deformation performance, fireproof an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/02C04B20/02C04B111/34C04B111/27
CPCC04B28/00C04B20/023C04B14/026C04B2111/343C04B2201/50C04B2111/27
Inventor 黄伟姜燕燕翁伟李艳孙位明何江华方烨
Owner 浙江华滋奔腾建材有限公司
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