Method for producing green ecological cement resistant to seawater corrosion by using construction wastes

A technology of construction waste and ecological cement, which is applied in the field of green ecological cement that uses construction waste to produce anti-seawater corrosion, can solve the problems of inconvenient construction and engineering quality control, lack of uniform standards for preparation technology, unfavorable production and construction costs, etc., and achieve good results. Compactness and volume stability, good economic and social benefits, and low price

Active Publication Date: 2015-01-07
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 green ecological cement resistant to seawater corrosion by using construction wastes

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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 water 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 mi...

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 water 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 ceme...

Embodiment 3

[0048] The green ecological cement that resists seawater corrosion is produced with construction waste, and its 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 water 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 ...

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Abstract

The invention discloses a method for producing green ecological cement resistant to seawater corrosion by using construction wastes. The cement comprises the following raw materials in parts by weight: 40-50 parts of sulphoaluminate cement clinkers, 5-20 parts of construction wastes, 20-25 parts of steel slag powder, 0.06-0.08 part of compound activating agent, 2-5 parts of early strength agent, 0.3-0.5 part of water reducing agent, 0.005-0.007 part of air entraining agent and 0.3-0.5 part of retarder. The production method is characterized by breaking, grinding and homogenizing the construction wastes, the sulphoaluminate cement clinkers, the compound activating agent and the early strength agent respectively, preparing the materials in proportion, mixing the materials, homogenizing the mixture, then adding the water reducing agent, the air entraining agent and the retarder, mixing the materials and homogenizing the mixture, thus preparing the product. The green ecological cement resistant to seawater corrosion has the excellent characteristics of high strength, resistance to seawater corrosion and seawater scouring, and the like besides the properties of ordinary cement, and is especially suitable for underground engineering, ports, wharfs and other engineering suffering corrosion of erosion media.

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 Applications(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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