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Preparation method of cement composite additive

A composite additive and cement technology, applied in the field of building materials manufacturing, can solve the problems of accelerated corrosion of steel bars, concrete cracking, water seepage, damage and other problems

Inactive Publication Date: 2014-06-18
郑州市公路工程公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the project, many building basements, roofs, roads, and bridges could not reach the designed service life, and some projects were severely damaged after only a few years of use and had to be repaired. The main reason is that the current waterproof materials and concrete Agents generally contain Cl-,,,,, K+ ions too heavy, when added to concrete, react with active silica in concrete to form alkali silicate gel and cause concrete expansion and cracking, which is a common problem in engineering Alkali-aggregate reaction, while accelerating the corrosion of steel bars, resulting in concrete cracking and water seepage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method for cement composite additive, characterized in that:

[0025] The steps of the preparation method are:

[0026] Step (1): According to 30 parts of alumina clinker, 5 parts of calcined alunite, 1 part of zinc sulfate, 10 parts of dickite, 10 parts of attapulgite clay, 10 parts of fly ash, 1 part of zeolite powder, and diatomite 2 parts, 2 parts of bentonite, 1 part of methyl cellulose, 0.5 part of sodium sulfite, 0.5 part of quicklime, 0.2 part of calcium fluoride to prepare raw materials,

[0027] Step (2): 30 parts of alumina clinker, 5 parts of calcined alunite, 1 part of zinc sulfate, and 10 parts of dickite are ground in a pulverizer at a speed of 120 r / min for 6 hours to obtain Mixture A particle size is 0.5-1mm,

[0028] Step (3): 10 parts of attapulgite clay, 10 parts of fly ash, 1 part of zeolite powder, 2 parts of diatomaceous earth, and 2 parts of bentonite are ground in a pulverizer at a speed of 100 r / min for 2 Hour, obtain mixture B...

Embodiment 2

[0032] A preparation method for cement composite additive, characterized in that:

[0033] The steps of the preparation method are:

[0034] Step (1): According to 35 parts of alumina clinker, 10 parts of calcined alunite, 5 parts of zinc sulfate, 20 parts of dickite, 20 parts of attapulgite clay, 15 parts of fly ash, 5 parts of zeolite powder, diatomaceous earth 4 parts, 5 parts of bentonite, 2 parts of methyl cellulose, 1 part of sodium sulfite, 1 part of quicklime, 0.5 part of calcium fluoride to prepare raw materials,

[0035] Step (2): 35 parts of alumina clinker, 10 parts of calcined alunite, 5 parts of zinc sulfate, and 20 parts of dickite are ground in a pulverizer at a speed of 120 r / min for 6 hours to obtain Mixture A particle size is 0.5-1mm,

[0036] Step (3): Grind 20 parts of attapulgite clay, 15 parts of fly ash, 5 parts of zeolite powder, 4 parts of diatomaceous earth, and 5 parts of bentonite in a pulverizer at a speed of 100 r / min. Hour, obtain mixture B p...

Embodiment 3

[0040] A preparation method for cement composite additive, characterized in that:

[0041] The steps of the preparation method are:

[0042] Step (1): According to 32 parts of alumina clinker, 7 parts of calcined alunite, 3 parts of zinc sulfate, 13 parts of dickite, 13 parts of attapulgite clay, 13 parts of fly ash, 3 parts of zeolite powder, diatomaceous earth 3 parts, 3 parts of bentonite, 1 part of methyl cellulose, 0.6 part of sodium sulfite, 0.6 part of quicklime, 0.3 part of calcium fluoride to prepare raw materials,

[0043]Step (2): 32 parts of alumina clinker, 7 parts of calcined alunite, 3 parts of zinc sulfate, and 13 parts of dickite are ground in a pulverizer at a speed of 120 r / min for 6 hours to obtain Mixture A particle size is 0.5-1mm,

[0044] Step (3): 13 parts of attapulgite clay, 13 parts of fly ash, 3 parts of zeolite powder, 3 parts of diatomaceous earth, and 3 parts of bentonite are ground in a pulverizer, and the rotating speed is 100r / min. Hour, o...

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PUM

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Abstract

The invention discloses a preparation method of a cement composite additive. The preparation method is characterized in that the cement composite additive comprises the following materials in parts by weight: 30-35 parts of alumina clinker, 5-10 parts of calcined alunite, 1-5 parts of zinc sulfate, 10-20 parts of dickite, 10-20 parts of attapulgite clay, 10-15 parts of coal ashes, 1-5 parts of zeolite powder, 2-4 parts of diatomite, 2-5 parts of bentonite, 1-2 parts of methyl cellulose, 0.5-1 part of sodium sulfite, 0.5-1 part of quick lime and 0.2-0.5 part of calcium fluoride. The cement composite additive disclosed by the invention has functions of being efficient and waterproof, moisture-proof, inflation-proof, crack-resistant, impervious, and the like, and has no corrosion effect on a reinforcing steel bar.

Description

technical field [0001] The invention relates to a preparation method of a cement composite additive, which belongs to the field of building material manufacturing. Background technique [0002] During the project, many building basements, roofs, roads, and bridges could not reach the designed service life, and some projects were severely damaged after only a few years of use and had to be repaired. The main reason is that the current waterproof materials and concrete Agents generally contain Cl-,,,,, K+ ions too heavy, when added to concrete, react with active silica in concrete to form alkali silicate gel and cause concrete expansion and cracking, which is a common problem in engineering Alkali-aggregate reaction also accelerates the corrosion of steel bars, resulting in concrete cracking and water seepage. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing a cement c...

Claims

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Application Information

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IPC IPC(8): C04B24/38
Inventor 黄小仙
Owner 郑州市公路工程公司
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