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A kind of preparation method of wear-resistant and anti-shrinkage concrete material

A technology of concrete and mixed powder, which is applied in the field of material science and engineering, and can solve problems affecting the wear resistance of cement concrete and large shrinkage of cement concrete.

Inactive Publication Date: 2019-04-02
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the present invention discloses a preparation method of a wear-resistant and anti-shrinkage concrete material, which solves the problem of excessive dry shrinkage of cement concrete in the prior art, which affects the cement concrete. Technical issues of wear resistance

Method used

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  • A kind of preparation method of wear-resistant and anti-shrinkage concrete material
  • A kind of preparation method of wear-resistant and anti-shrinkage concrete material
  • A kind of preparation method of wear-resistant and anti-shrinkage concrete material

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specific Embodiment 1

[0027] A method for preparing a wear-resistant and shrinkage-resistant concrete material, comprising the following steps:

[0028] (1) Preparation of temperature / pH dual-sensitive nanocomposite hydrogels;

[0029] (2) the aggregate of weighing 74.7 mass parts is mixed with the cement of 16.6 mass parts to obtain mixed powder;

[0030] (3) Add 0.4 parts by mass of the temperature / pH dual-sensitive nanocomposite hydrogel and 7.7 parts by mass of water obtained in step (1) to the mixed powder in step (2) in turn, and mix well Obtain wear-resistant and anti-shrinkage concrete.

[0031] Further, step (1) includes

[0032] (11) Add 0.16 parts by mass of crosslinking agent to 6.816 parts by mass of deionized water, and continue to stir for 10 minutes to obtain a uniform dispersion;

[0033] (12) While stirring, add 0.832 parts by mass of N,N-diethylacrylamide to the dispersion obtained in step (11), and continue stirring for 10 minutes to obtain a uniform dispersion;

[0034] (13...

specific Embodiment 2

[0039] A method for preparing a wear-resistant and shrinkage-resistant concrete material, comprising the following steps:

[0040] (1) Preparation of temperature / pH dual-sensitive nanocomposite hydrogels;

[0041] (2) the aggregate of weighing 75.3 mass parts is mixed with the cement of 16.8 mass parts to obtain mixed powder;

[0042] (3) Add 0.6 parts by mass of the temperature / pH dual-sensitive nanocomposite hydrogel and 7.9 parts by mass of water obtained in step (1) to the mixed powder in step (2) in turn, and mix well Obtain wear-resistant and anti-shrinkage concrete.

[0043] Further, step (1) includes:

[0044] (11) Add 0.264 parts by mass of crosslinking agent to 10.248 parts by mass of deionized water, and continue to stir for 20 minutes to obtain a uniform dispersion;

[0045] (12) While stirring, add 1.272 parts by mass of N,N-diethylacrylamide to the dispersion obtained in step (11), and continue stirring for 20 minutes to obtain a uniform dispersion;

[0046] (1...

specific Embodiment 3

[0051] A method for preparing a wear-resistant and shrinkage-resistant concrete material, comprising the following steps:

[0052] (1) Preparation of temperature / pH dual-sensitive nanocomposite hydrogels;

[0053] (2) the aggregate of weighing 75 mass parts is mixed with the cement of 167 mass parts to obtain mixed powder;

[0054] (3) Add 0.5 parts by mass of the temperature / pH dual-sensitive nanocomposite hydrogel and 7.8 parts by mass of water obtained in step (1) to the mixed powder in step (2) in turn, and mix well Obtain wear-resistant and anti-shrinkage concrete.

[0055] Further, step (1) includes:

[0056] (11) Add 0.2 parts by mass of crosslinking agent to 8 parts by mass of deionized water, and continue to stir for 15 minutes to obtain a uniform dispersion;

[0057] (12) While stirring, add 1 mass part of N,N-diethylacrylamide to the dispersion obtained in step (11), and continue stirring for 15 minutes to obtain a uniform dispersion;

[0058] (13) While stirrin...

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Abstract

The invention belongs to the field of material science and engineering, and relates to cement concrete materials, in particular to a preparation method of wear-resistant and anti-shrinkage concrete materials. A method for preparing a wear-resistant and anti-shrinkage concrete material, comprising the following steps: (1) preparing temperature / pH dual-sensitive nanocomposite hydrogel; (2) weighing 74.7-75.3 parts by mass of aggregate and 16.6-16.8 Mixing the cement in parts by mass uniformly to obtain a mixed powder; (3) adding 0.4 to 0.6 parts by mass of the temperature / pH dual-sensitive nanocomposite hydrogel obtained in step (1) to the mixed powder in step (2) successively , 7.7-7.9 parts by mass of water, after mixing evenly, the wear-resistant and anti-shrinkage concrete can be obtained.

Description

technical field [0001] The invention belongs to the field of material science and engineering, and relates to cement concrete materials, in particular to a preparation method of wear-resistant and anti-shrinkage concrete materials. Background technique [0002] Cement concrete pavement, as one of the main pavement structure forms in our country, requires certain strength and durability. However, the durability of concrete pavement fails to meet people's expected requirements due to long-term exposure to the air and the impact of various harsh climates. [0003] When the cement concrete structure is under different constraints, the tensile stress caused by shrinkage is greater than the tensile strength of the concrete, which will lead to cracks in the concrete, resulting in a decline in the durability of the concrete. When it is used as a pavement material, it must also withstand the impact of external loads, extrusion, and cutting of hard materials on the pavement for a lon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C08F220/54C08F220/34C08F220/06C04B24/28C04B111/34
CPCC04B24/287C04B28/00C04B2111/346C08F220/54C08F220/34C08F220/06C04B22/002C04B14/02
Inventor 关博文吴佳育王振军陈华鑫雷彤
Owner CHANGAN UNIV