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Anti-cracking cement and preparation method thereof

A cement and anti-cracking technology, which is applied in cement production and other directions, can solve the problems of concrete concrete cracking, etc., and achieve the effects of reducing hydration temperature rise, ensuring shrinkage compensation, and improving concrete strength

Inactive Publication Date: 2019-04-23
龚家玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an anti-cracking cement, aiming at solving the cracking problem of mass concrete

Method used

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  • Anti-cracking cement and preparation method thereof
  • Anti-cracking cement and preparation method thereof
  • Anti-cracking cement and preparation method thereof

Examples

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Effect test

preparation example Construction

[0040] Correspondingly, a kind of preparation method of anti-cracking cement comprises the following steps:

[0041] According to the anti-cracking cement formula of the present invention, each component is weighed respectively, and the above-mentioned components are ball milled and mixed.

[0042] The preparation method of the anti-cracking cement provided in this embodiment is low in cost, simple and controllable in process, and easy to realize industrialization development.

[0043] Specifically, the formula of the above-mentioned anti-cracking agent for concrete and the preferred content and type of each component in the formula are as described above, and will not be repeated here in order to save space.

[0044] The weighed components are ball milled, and all the cement components are sent to the ball mill for ball milling. This production method will be difficult to control the specific surface area of ​​each component in the cement, and due to the hydration time of eac...

Embodiment 1

[0047] An anti-cracking cement, comprising the following components in the following parts by weight:

[0048]

[0049] The preparation method of above-mentioned anti-cracking cement, comprises the steps:

[0050] Take each component respectively according to the formula of above-mentioned anti-cracking cement;

[0051] The above-mentioned components are ball-milled separately and then mixed and homogenized.

Embodiment 2

[0053] An anti-cracking cement, comprising the following components in the following parts by weight:

[0054]

[0055] The preparation method of above-mentioned anti-cracking cement, comprises the steps:

[0056] Take each component respectively according to the formula of above-mentioned anti-cracking cement;

[0057] The above-mentioned components are ball-milled separately and then mixed and homogenized.

[0058] Comparing the anti-cracking cement provided by the embodiment of the present invention with the conventional cement, it is found that the heat of hydration of the conventional cement is higher, and even the low-heat cement has poor performance in compensating shrinkage, so the probability of concrete cracking in the conventional cement is high. However, the anti-cracking cement provided by the embodiment of the present invention makes up for the defects of conventional cement. The heat of hydration of cement is low, which solves the problem of concrete tempera...

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Abstract

The invention provides anti-cracking cement, which is prepared from the following components in parts by weight: 40 to 60 parts of cement clinker, 10 to 40 parts of fly ash, 10 to 40 parts of phosphorus slag, 5 to 15 parts of phosphogypsum and 1 to 15 parts of magnesium oxide, wherein the phosphogypsum is prepared by treating phosphorite with sulfuric acid to prepare phosphoric acid, collecting solid waste residues produced in the preparation process, and calcining the solid waste residues at a high temperature of 800 to 1,000 DEG C, thus preparing the phosphogypsum.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to an anti-crack cement and a preparation method thereof. Background technique [0002] Concrete is one of the most important civil engineering materials in contemporary times and is widely used in all aspects of construction. The concrete mixed with ordinary cement has a high hydration temperature and obvious early self-shrinkage, so the concrete shrinks and deforms greatly and is easy to crack. In addition, due to the volatilization of free water in concrete later, it will further lead to shrinkage and deformation of concrete. Shrinkage will cause cracks in the concrete structure, reduce the compactness of the concrete structure, and affect the impermeability, frost resistance, and corrosion resistance of the concrete. Especially, for mass concrete, the cracking phenomenon is more serious. Contents of the invention [0003] The object of the present invention is to provide an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/36
CPCC04B7/26C04B7/36Y02P40/10
Inventor 龚家玉龚兵朱劲光
Owner 龚家玉
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