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Low-magnetism cement and preparation method thereof

A technology of cement and cement clinker, which is applied in the field of cement, and achieves the effect of strong universality and simple preparation method

Inactive Publication Date: 2017-05-31
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the research on the magnetic properties of concrete has not yet started. Due to the important position of cement in concrete, the magnetic characteristics of cement are an important factor affecting the magnetic properties of concrete. After searching, there is no relevant report on low magnetic cement, which belongs to the blank in the industry.

Method used

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  • Low-magnetism cement and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] A kind of low magnetic cement, comprises low magnetic cement clinker and gypsum, the mineral composition of described low magnetic cement clinker is C 3 S 38%; C 2 S 50%; C 4 AF 10%; C 3 A 0.1%, the rest are impurities.

[0031] The vertical lift weight of the low magnetic cement clinker is 1450g / L;

[0032] The magnetism of the cement in this embodiment is 1 before magnetization, and the magnetism after magnetization is 3nT.

Embodiment 2

[0034] A kind of low magnetic cement, comprises low magnetic cement clinker and gypsum, the mineral composition of described low magnetic cement clinker is C 3 S 30%; C 2 S 50%; C 4 AF 15%; C 3 A 0.1%, the rest are impurities.

[0035] The vertical lift weight of the low magnetic cement clinker is 1500g / L;

[0036] The magnetism of the cement in this embodiment is 1 before magnetization, and 6nT after magnetization.

Embodiment 3

[0038] A kind of low magnetic cement, comprises low magnetic cement clinker and gypsum, the mineral composition of described low magnetic cement clinker is C 3 S 40%; C 2 S 40%; C 4 AF 10%; C 3 A 5%, the rest are impurities.

[0039] The vertical lift weight of the low magnetic cement clinker is 1300g / L;

[0040] The magnetism of the cement in this embodiment is 1 before magnetization, and 6nT after magnetization.

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Abstract

The invention discloses a low-magnetism cement and a preparation method thereof, and belongs to the technical field of cement. The cement comprises a low-magnetism cement clinker and gypsum, wherein the low-magnetism cement clinker comprises the following mineral components: 25-45% of C3S, 40-50% of C2S, 10-15% of C4AF, and 0.1-5% of C3A; the litre weight of the low-magnetism cement clinker is 1300-1500g / L; the magnetic field strength of the low-magnetism cement after magnetizing is less than 20nT. According to the low-magnetism cement, the blank of low-magnetism cement in the industry is filled; the low-magnetism cement is provided; the cement indexes are controlled, and the materials are strictly selected, so that the magnetism is controlled to be within 20nT range; the low-magnetism cement is widely applied to mass engineering construction, such as ocean engineering, national defense construction and precision engineering, and is of great significance.

Description

technical field [0001] The invention relates to a cement, in particular to a low-magnetic cement and a preparation method thereof, belonging to the technical field of cement. Background technique [0002] In large-volume structural engineering such as modern marine engineering and underwater engineering, the concept of magnetic concrete was proposed for the convenience of positioning and construction; while in national defense engineering and precision engineering, in order to prevent magnetic interference and magnetic exposure, the concept of magnetic concrete was proposed. Concept of magnetic concrete. [0003] At present, the research on the magnetic properties of concrete has not yet started. Due to the important position of cement in concrete, the magnetic characteristics of cement are an important factor affecting the magnetic properties of concrete. After searching, there are no relevant reports on low magnetic cement, which is a blank in the industry. Contents of t...

Claims

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Application Information

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IPC IPC(8): C04B7/04C04B7/36
CPCC04B7/04C04B7/36
Inventor 王田堂王宁范有银
Owner JIAHUA SPECIAL CEMENT
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