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Highly-durable cement and production method thereof

A production method and durability technology, which is applied in the production field of high-durability cement, which can solve the problems of severe cracks, concentrated hydration heat of concrete, and large shrinkage

Inactive Publication Date: 2017-04-26
杨文科
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the on-site engineers are at a loss for problems such as concentrated heat of hydration, large shrinkage, and serious cracks caused by this cement.

Method used

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  • Highly-durable cement and production method thereof
  • Highly-durable cement and production method thereof
  • Highly-durable cement and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Embodiment 1: the production of high durability cement of the present invention

[0094] The implementation steps of this embodiment are as follows:

[0095] Select raw materials that meet the quality requirements described in this manual, and use the MPS3450 vertical roller mill produced by Shenyang Lifting and Transportation Machinery Factory for grinding, so that the particle size of the raw material is less than 0.08mm and is ≤15% by weight , below 0.2mm is ≤2.0% by weight.

[0096] Then, 82 parts by weight of limestone calcareous raw materials, 0.4 parts by weight of shale aluminum raw materials, 5.6 parts by weight of quartz sandstone siliceous raw materials and 5.8 parts by weight of iron ore iron raw materials are mixed to obtain a raw meal, and then this raw meal Calcined with coal powder at a calcination temperature of 1400°C in a cement kiln to obtain a high-durability clinker.

[0097] In the clinker calcination step, the temperature fluctuation range of t...

Embodiment 2

[0106] Embodiment 2: the production of high durability cement of the present invention

[0107] The implementation steps of this embodiment are as follows:

[0108] Select raw materials that meet the quality requirements described in this manual, and use the MPS3450 vertical roller mill produced by Shenyang Lifting and Transportation Machinery Factory for grinding, so that the particle size of the raw material is less than 0.08mm and is ≤15% by weight , below 0.2mm is ≤2.0% by weight.

[0109] Then, 85 parts by weight of marl calcareous raw materials, 0.8 parts by weight of bauxite aluminum raw materials, 5.0 parts by weight of river sand siliceous raw materials and 5.0 parts by weight of iron powder iron raw materials are mixed to obtain a raw meal, and then this Raw meal and coal powder are calcined in a cement kiln at a calcination temperature of 1400°C to obtain a high-durability clinker.

[0110] In the clinker calcination step, the temperature fluctuation range of the ...

Embodiment 3

[0118] Embodiment 3: the production of high durability cement of the present invention

[0119] The implementation steps of this embodiment are as follows:

[0120] Select raw materials that meet the quality requirements described in this manual, and use the MPS3450 vertical roller mill produced by Shenyang Lifting and Transportation Machinery Factory for grinding, so that the particle size of the raw material is less than 0.08mm and is ≤15% by weight , below 0.2mm is ≤2.0% by weight.

[0121] Then, 86 parts by weight of chalk calcareous raw materials, 1.0 parts by weight of fly ash aluminum raw materials, 7.4 parts by weight of Jiangsha siliceous raw materials and 7.2 parts by weight of sulfuric acid slag iron raw materials are mixed to obtain a kind of raw meal, and then this raw meal Calcined with coal powder at a calcination temperature of 1400°C in a cement kiln to obtain a high-durability clinker.

[0122] In the clinker calcination step, the temperature fluctuation ra...

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Abstract

The invention relates to highly-durable cement and a production method thereof. The production method includes mixing calcareous raw materials, aluminous raw materials, silica raw materials and iron raw materials, calcining to obtain highly-durable clinker, and grinding the highly-durable clinker as well as natural gypsum, coal ash and blast-furnace slag powder so as to obtain the highly-durable cement. The highly-durable cement produced by the production method has the advantages that the C3S content in the cement can be decreased below 50% by weight, the C3A content in the cement can be decreased below 4% by weight, C2S content in the cement can be increased above 25% by weight, the specific surface area of the cement is decreased below 350 m<2> / kg, final setting time of the cement is prolonged to 250 minutes, and 3-day strength of the cement is reduced around 20 MPa, so that the increasing range of the later cement strength is increased, concrete project cracks are reduced, and project service life is prolonged greatly.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of cement production. More particularly, the present invention relates to a cement having high durability, and the present invention relates to a production method of cement having high durability. [0003] 【Background technique】 [0004] In the past two decades, with the advancement of the machinery industry, the appearance of the cement industry has changed a lot. Production technology is advancing too fast, while concrete technology development is lagging behind it. Cement is the core raw material of concrete. In a sense, the quality of cement determines the quality of concrete. The rapid development of cement production technology and the relative lag in the development of concrete technology have resulted in many unresolvable confusions and problems in modern concrete from theory to engineering practice. Especially modern cement, it is the most important and most direct influencing factor of...

Claims

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Application Information

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IPC IPC(8): C04B7/147C04B7/36
CPCC04B7/147C04B7/36Y02P40/10
Inventor 杨文科
Owner 杨文科
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