Method for producing green ecological cement resistant to seawater corrosion with stone waste

A technology for stone waste and ecological cement is applied in the field of green ecological cement production that is resistant to seawater corrosion. The effect of volume stability, high resistance to chloride ion diffusion, good economic and social benefits

Active Publication Date: 2017-01-04
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problems existing in on-site preparation include: the lack of uniform standards for preparation technology, the preparation process is relatively complicated, which brings inconvenience to construction and project quality control, and is not conducive to saving production and construction costs

Method used

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  • Method for producing green ecological cement resistant to seawater corrosion with stone waste
  • Method for producing green ecological cement resistant to seawater corrosion with stone waste
  • Method for producing green ecological cement resistant to seawater corrosion with stone waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0041] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0042] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate through a 100-mesh sieve reaches more than 95%, and 30 parts of the obtained stone waste and the prepared sulphoaluminate cement are cooked Add 40 parts of material, 0.03 parts of composite activator and 2 parts of early strength agent into the cement mill in parts by weight, and spray atomized water to the inside of the cement mill to control the temperature of the grinding process at 90-120°C. The material that comes out of the grinding head of the cement mill, that is, cement, is transported into the finished pr...

Embodiment 2

[0046] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0047] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0048] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate through a 100-mesh sieve reaches more than 95%, and 35 parts of the obtained stone waste and the prepared sulphoaluminate cement are cooked Add 45 parts of raw materials, 0.04 parts of composite activator and 3 parts of early strength agent into the cement mill in parts by weight, and spray atomized water to the inside of the cement mill to control the temperature of the grinding process at 90-120°C. The material that comes out of the grinding head of the cement mill, that is, cement, is transported into the finish...

Embodiment 3

[0052] The green ecological cement with stone waste as raw material, its production method comprises the following steps:

[0053] a. Drying: The stone waste is sent to the vertical dryer by the belt conveyor for drying. After drying, the stone waste is sent to the stone waste warehouse by the elevator for storage, and the water content is less than 2.8%.

[0054] b. Grinding: Grind the dried stone waste obtained in step a with a cement mill so that the passing rate of it through a 100 mesh sieve reaches more than 95%, and 40 parts of the obtained stone waste and the prepared sulphoaluminate cement are cooked Add 50 parts of material, 0.05 parts of composite activator and 4 parts of early strength agent into the cement mill in parts by weight, and spray atomized water into the cement mill to control the temperature of the grinding process at 90-120 °C. The material that comes out of the grinding head of the cement mill, that is, cement, is transported into the finished product...

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Abstract

The invention discloses a method for producing seawater corrosion-resistant green ecological cement from stone waste, which comprises the following raw materials in parts by weight: 30-40 parts of stone waste; 40-50 parts of sulphoaluminate cement clinker; 0.03-0.05 parts of activator; 2-4 parts of early strength agent; 0.3-0.5 parts of water reducing agent; 0.005-0.007 parts of air-entraining agent; The salt cement clinker, composite activator and early strength agent are crushed separately, pulverized, homogenized, then mixed and homogenized according to the proportion, and then added with water reducer, air-entraining agent and retarder, mixed and homogenized to obtain the product. The seawater corrosion-resistant green ecological cement of the present invention, in addition to the performance of ordinary cement, also has excellent characteristics such as high strength, seawater erosion resistance, seawater erosion resistance, etc., and is especially suitable for underground projects, ports, wharves and other erosive media. project.

Description

technical field [0001] The invention relates to a production method of cement, in particular to a low-cost, energy-saving and environment-friendly production method of seawater corrosion-resistant green ecological cement. Background technique [0002] The word Cement (cement) is developed from the Latin caementum, which means gravel and flakes. The history of cement can be traced back to the mixture of lime and volcanic ash used by the ancient Romans in construction, which is very similar to modern lime pozzolan cement. The concrete made of cemented crushed stone not only has high strength after hardening, but also can resist the erosion of fresh water or salt water. For a long time, it has been widely used in construction projects as a kind of important cementitious material. In 1756, British engineer J. Smeaton discovered when studying the characteristics of some lime hardening in water: to obtain hydraulic lime, it must be fired with limestone containing clay; The idea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/24
Inventor 黄芳龙志谋杨毅龙承战
Owner 广西云燕特种水泥建材有限公司
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