Method for producing seawater corrosion-resistant green ecological cement with construction waste

A technology for construction waste and ecological cement, which is applied in the field of producing green ecological cement resistant to seawater corrosion from construction waste, can solve the problems of inconvenient construction and engineering quality control, lack of uniform standards for preparation technology, unfavorable production and construction costs, etc. Density and volume stability, good economic and social benefits, low price effect

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

AI Technical Summary

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 seawater corrosion-resistant green ecological cement with construction waste
  • Method for producing seawater corrosion-resistant green ecological cement with construction waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The green ecological cement that resists seawater corrosion is produced with construction waste, and its production method comprises the following steps:

[0037] a. Drying: The construction waste is conveyed by the belt to the vertical dryer for drying, and the water content in the grinding is 1.48%. The steel slag fine powder is sent to the rotary dryer by the belt conveyor for drying. After drying, the steel slag is passed through the elevator. Sent to the steel slag warehouse for storage, the moisture content is 2.8%;

[0038] b. Grinding: Grind the dry construction waste and steel slag micropowder with a cement mill respectively, so that the passing rate through a 100 mesh sieve reaches more than 95%, prepare 5 parts of construction waste and 20 parts of steel slag micropowder and prepare Add 40 parts of sulphoaluminate cement clinker, 0.06 composite activator and 2 parts of early strength agent into the cement mill, spray atomized water to the inside of the cement...

Embodiment 2

[0042] The green ecological cement that resists seawater corrosion is produced with construction waste, and its production method comprises the following steps:

[0043] a. Drying: The construction waste is conveyed by the belt to the vertical dryer for drying, and the water content in the grinding is 1.48%. The steel slag fine powder is sent to the rotary dryer by the belt conveyor for drying. After drying, the steel slag is passed through the elevator. Sent to the steel slag warehouse for storage, the moisture content is 2.8%;

[0044] b. Grinding: Grind the dry construction waste and steel slag micropowder with cement mill respectively, so that the passing rate of it through a 100 mesh sieve reaches more than 95%, prepare 20 parts of construction waste and 25 parts of steel slag micropowder and prepare Add 50 parts of sulphoaluminate cement clinker, 0.08 composite activator and 5 parts of early strength agent into the cement mill, spray atomized water to the inside of the c...

Embodiment 3

[0048] Using construction waste to produce seawater corrosion-resistant green ecological cement, the production method comprises the following steps:

[0049] a. Drying: The construction waste is conveyed by the belt to the vertical dryer for drying, and the water content in the grinding is 1.48%. The steel slag fine powder is sent to the rotary dryer by the belt conveyor for drying. After drying, the steel slag is passed through the elevator. Sent to the steel slag warehouse for storage, the moisture content is 2.8%;

[0050] b. Grinding: Grind the dry construction waste and steel slag micropowder with a cement mill respectively, so that the passing rate through a 100 mesh sieve reaches more than 95%, and prepare 13 parts of construction waste and 23 parts of steel slag micropowder obtained Add 45 parts of sulphoaluminate cement clinker, 0.07 composite activator and 4 parts of early strength agent into the cement mill, spray atomized water to the inside of the cement mill, an...

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Abstract

The invention discloses a method for producing seawater corrosion-resistant green ecological cement from construction waste, which comprises the following raw materials in parts by weight: 40-50 parts of sulphoaluminate cement clinker; 5-20 parts of construction waste; steel slag fine powder 20-25 parts; 0.06-0.08 parts of composite activator; 2-5 parts of early strength agent; 0.3-0.5 parts of water reducing agent; 0.005-0.007 parts of air-entraining agent; Construction waste, sulphoaluminate cement clinker, composite activator and early strength agent are crushed separately, milled, homogenized, mixed and homogenized according to the proportion, and then mixed and homogenized by adding water reducing agent, air-entraining agent and retarder get 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 cement production method, in particular to a low-cost, energy-saving, environment-friendly, seawater-corrosion-resistant, green ecological production method. 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 ideal composition ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/34C04B7/38
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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