CN1400164A - Production method of aluminium silicate mineral superfine powder - Google Patents
Production method of aluminium silicate mineral superfine powder Download PDFInfo
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- CN1400164A CN1400164A CN 02131207 CN02131207A CN1400164A CN 1400164 A CN1400164 A CN 1400164A CN 02131207 CN02131207 CN 02131207 CN 02131207 A CN02131207 A CN 02131207A CN 1400164 A CN1400164 A CN 1400164A
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- concrete
- kaolin
- superfine powder
- aluminium silicate
- silicate mineral
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Abstract
The production method of aluminosilicate mineral superfine powder belongs to the field of building material technology, and uses kaolin as raw material and includes the following steps: heating said raw material for 1-2 hr. at 600-800 deg.C to obtain metakaolin; mixing raw material kaolin and water-reducing agent according to a certain weight percentage, uniformly stirring and drying to obtain adjuvant; uniformly mixing the metakaolin and adjuvant according to a certain ratio, grinding so as to obtain the invented product. Said product can change concrete composition, improve concrete structure, and can effectively inhibit internal pathological changes of concrete, and can protect concrete against external corrosion.
Description
Technical field
The present invention relates to a kind of manufacture method of aluminium silicate mineral superfine powder, belong to building material technical field.
Background technology
Since invention cement in 1824, concrete material is in the history in existing more than 100 year of application in engineering.According to statistics, whole world concrete output in 2000 has reached 3,000,000,000 m
3The concrete annual production of China has reached 12-13 hundred million m
3Account for about 40% of world's annual production, this explanation concrete has all become one of most important building materials at home and abroad.
But a large amount of engineering is used proof, concrete in use because loading action, the erosion of corrosive medium under the environment of living in, and humiture variation etc., concrete can continuous deterioration so that lost efficacy.For example, some Reinforced Concrete Bridge that China is coastal are in the skeleton construction in saltings, came into operation about about 10 years, though the serious corrosion of reinforcing bar is through repairing, but behind the 2-3, repair layer is damaged again and is peeled off, and need reconstruct to making these bridges be announced to repair.The electric pole of in the saltings, burying underground, since chloride ion corrosion, sulphate corrosion, the operation through about 10 years is used, and fracture is suddenly collapsed, and collapsing of whole circuit will be caused the power failure of whole power transmission network.This not only causes serious economy loss, and causes bad social influence, brings pollution to environment.
This concrete and DURABILITY OF REINFORCED CONCRETE disease syndromes have been quickened the deterioration and the inefficacy of skeleton construction.How internally composition material and structure are adjusted, the erosion that suppresses the generation of inner pathology and resist external hazardous medium, administering concrete durability disease syndromes, is China's construction of the West Region, oceanographic engineering construction and the problem that presses for solution in the engineering construction of saltings.
Summary of the invention
The objective of the invention is to propose a kind of manufacture method of aluminium silicate mineral superfine powder, change concrete composition material, improve concrete structure, to seek an effective way of administering weather resistance disease syndromes, suppress the erosion that concrete inner pathology takes place and resists external hazardous medium effectively.
All there is abundant kaolin resource on ground such as the Soviet Union of China, Zhejiang, Fujian, Jiangxi, Shanxi, Ji, Shandong, the Liao Dynasty, Ji, river, Yunnan, osmanthus and Inner Mongol.The present invention is main raw material with kaolin, through certain Temperature Treatment, mixes auxiliary agent, and is levigate to crossing the 500-600 order, obtains mineral substance ultrafine powder (code name MKAG).Utilize this ultrafine powder to mix in the concrete, can administer concrete durability disease syndromes.
The manufacture method of mineral substance ultrafine powder of the present invention may further comprise the steps:
(1) be raw material with composition such as the described kaolin of following table, weight unit wherein is weight percentage,
| SiO 2 | ?Al 2O 3 | ?Fe 2O 3 | ?CaO | ?MgO | K 2O+Na 2O | Loss on ignition | Other |
| 50-55 | ?30-40 | ?1-2.0 | ?0.1-0.5 | ?0.1-0.5 | ?0.01-0.2 | 11-12 | 2-3.0 |
(2) above-mentioned kaolin was heated 1-2 hour at 600-800 ℃, obtain metakaolin;
(3) with the kaolin of the above-mentioned the first step and water reducer by weight percentage 1: 0.5-1 mixes, and stirs, and is lower than drying 100 times, obtains auxiliary agent;
(4) auxiliary agent that above-mentioned second metakaolin that makes of step and the 3rd step are made by weight percentage 100: 0.5-1.0 mixes, and is levigate to crossing the 500-600 order, gets aluminium silicate mineral superfine powder.
Water reducer in the aforesaid method is naphthalenesulfonate formaldehyde condensation compound liquid or sulfamate formaldehyde condensation products liquid, and its weight percent concentration can be 32wt%.
The manufacture method of the aluminium silicate mineral superfine powder that the present invention proposes, with kaolin cheap and easy to get is main raw material, change concrete composition, improve concrete structure, be used to administer concrete durability disease syndromes, can suppress the erosion that concrete inner pathology takes place and resists external hazardous medium effectively.
Embodiment
Embodiment 1:
With composition is kaolin under the listed dried state of natural gas of following table,
| SiO 2 | ?Al 2O 3 | ?Fe 2O 3 | ?CaO | ?MgO | ?K 2O+Na 2O | Loss on ignition | Other |
| 52 | ?33 | ?1.0 | ?0.3 | ?0.4 | ?0.30 | 11 | 2 |
Being the amino sulfonate and formaldehyde condenses of 32% liquid with concentration mixes by 1: 0.5 part by weight, 98 ℃ of oven dry down, obtains auxiliary agent.
Kaolin 700 ℃ of down heating 1 hour, is cooled to room temperature, and with auxiliary agent 100: 0.5 mixed by weight, common levigate mistake 500 orders obtain aluminium silicate mineral superfine powder.
Embodiment 2:
With the kaolin under the dried state of natural gas, with concentration be 32% liquid naphthalenesulfonate formaldehyde condensation compound by 1: 0.5 part by weight, mix, 98 ℃ down oven dry obtaining auxiliary agent.
With kaolin 800 ℃ of down heating 1 hour, cool to room temperature, with auxiliary agent 100: 1 mixed by weight, common levigate mistake 600 orders obtain aluminium silicate mineral superfine powder.
With the aluminium silicate mineral superfine powder that embodiment 1 and embodiment 2 make, replace in the concrete 20% cement respectively, can improve concrete performance, administer concrete durability disease syndromes effectively.
1, suppressing alkali-aggregate reaction (AAR) expands:
(a) alkali pasc reaction (ASR) expands, and presses the ASTMC441 method, 14 days rate of expansion 0.3743% of benchmark mortar, the value of being above standard 0.1%; And containing the test specimen of product 20% of the present invention, rate of expansion has effectively suppressed the ASR expansion less than 0.1%.
(b) alkali carbonate reaction (ACR expansion), by the former Nanjing University of Chemical Technology of China proposition method, benchmark mortar 28d rate of expansion is 0.1256% (greater than 0.1%); And contain the test specimen of product 20% of the present invention, rate of expansion low 0.0717%.Effectively suppressed the ACR expansion.
2, suppress the Cl-diffusion, according to the ASTMC120 method, the concrete of W/C=0.3,1751 coulombs of 28d electric conduction quantities, 56d are 1284 coulombs; All greater than 1000 coulombs.But the concrete that contains 15% product of the present invention, 28d electric conduction quantity are 874 coulombs, and 56d is 717 coulombs, all is lower than 1000 coulombs, and well below benchmark value.
3, anti-sulphates corrosive
With concrete moulding 10 * 10 * 10cm test specimen that contains 15%MKAG and do not contain of W/C=0.3 and 0.5, three test specimens of each proportioning.After mark supported for 28 length of times, put into 5% solution and soaked 16 hours; Took out airing 1 hour, and put into 80 baking ovens oven dry 6 hours then, carry out so repeatedly, observe its changes in weight, surpass 5%, then calculate and destroy as weight loss.After 80 circulations, do not reach destructiveness yet.
4, freeze-thaw-
The benchmark concrete of W/B=0.30 (code name K) with contain 15%MKAG concrete (code name P) and carry out freeze proof simultaneous test, press the test of GBF82-85 quick-freeze method, P reaches 150 freeze-thaw cycle, the mould of moving is greater than 60%, concrete K only circulates for 120 times, the mould of moving is less than 60%.
5, reinforced effects
Check MKAG strengthens test proportioning such as table 6, test-results such as table 7 to concrete
Table 6 concrete simultaneous test proportioning
| Numbering | Water ash (glue W/C | Folk prescription concrete material consumption (kg/m3) | |||||
| Cement | Water | Ultrafine powder | Sand | Rubble | ?FDN-AII | ||
| ?1 | ?0.42 | ?400 | ?168 | ?/ | ?800 | ?1000 | ?8 |
| ?2 | ?0.42 | ?340 | ?168 | ?MKAG60 | ?800 | ?1000 | ?8.0 |
| ?3 | ?0.42 | ?340 | ?168 | Silica flour 60 | ?800 | ?1000 | ?10 |
The contrast of table 7 concrete performance
| Numbering | Concrete mixture characteristic | Ultimate compression strength (Mpa) | ||
| 3 days | 7 days | 28 days | ||
| 1 | Degree of falling 19cm, bleeding hardens | 20.1(100％) | 35.3(100％) | 37.4(100％) |
| 2 | Degree of falling 19cm, bleeding slightly | 28.5(142％) | 47.7(135％) | 61.1(163％) |
| 3 | Degree of falling 5cm | 26.4(131％) | 42.3(120％) | 52.4(140％) |
Claims (3)
1, a kind of manufacture method of aluminium silicate mineral superfine powder is characterized in that this method may further comprise the steps:
(1) be raw material with composition such as the described kaolin of following table, weight unit wherein is weight percentage,
SiO
2 ?Al
2O
3 ?Fe
2O
3 ?CaO ?MgO ?K
2O+Na
2O
Loss on ignition Other
50-55 ?30-40 ?1-2.0 ?0.1-0.5 ?0.1-0.5 ?0.01-0.2 11-12 ?2-3.0
(2) above-mentioned kaolin was heated 1-2 hour at 600-800 ℃, obtain metakaolin;
(3) with the kaolin of the above-mentioned the first step and water reducer by weight percentage 1: 0.5-1 mixes, and stirs, and is lower than drying 100 times, obtains auxiliary agent;
(4) auxiliary agent that above-mentioned second metakaolin that makes of step and the 3rd step are made by weight percentage 100: 0.5-1.0 mixes, and is levigate to crossing the 500-600 order, gets aluminium silicate mineral superfine powder.
2, the method for claim 1 is characterized in that, water reducer wherein is naphthalenesulfonate formaldehyde condensation compound liquid or sulfamate formaldehyde condensation products liquid.
3, method as claimed in claim 2, the weight percent concentration that it is characterized in that water reducer wherein is 32wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021312079A CN1167617C (en) | 2002-09-13 | 2002-09-13 | Production method of aluminium silicate mineral superfine powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021312079A CN1167617C (en) | 2002-09-13 | 2002-09-13 | Production method of aluminium silicate mineral superfine powder |
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| Publication Number | Publication Date |
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| CN1400164A true CN1400164A (en) | 2003-03-05 |
| CN1167617C CN1167617C (en) | 2004-09-22 |
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| CNB021312079A Expired - Fee Related CN1167617C (en) | 2002-09-13 | 2002-09-13 | Production method of aluminium silicate mineral superfine powder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411983C (en) * | 2006-08-23 | 2008-08-20 | 中国铝业股份有限公司 | Method for preparing superfine alumina silicate |
| CN105884231A (en) * | 2016-04-20 | 2016-08-24 | 中建商品混凝土西安有限公司 | Mineral preservative for inhibiting corrosion to concrete and use method of mineral preservative |
| CN111099600A (en) * | 2019-12-31 | 2020-05-05 | 内蒙古超牌建材科技有限公司 | Production method of metakaolin with low water demand and high activity and metakaolin prepared by production method |
| CN117550617A (en) * | 2023-12-29 | 2024-02-13 | 安徽金岩高岭土新材料股份有限公司 | Technology for preparing mullite by taking coal-series kaolinite as raw material |
-
2002
- 2002-09-13 CN CNB021312079A patent/CN1167617C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411983C (en) * | 2006-08-23 | 2008-08-20 | 中国铝业股份有限公司 | Method for preparing superfine alumina silicate |
| CN105884231A (en) * | 2016-04-20 | 2016-08-24 | 中建商品混凝土西安有限公司 | Mineral preservative for inhibiting corrosion to concrete and use method of mineral preservative |
| CN111099600A (en) * | 2019-12-31 | 2020-05-05 | 内蒙古超牌建材科技有限公司 | Production method of metakaolin with low water demand and high activity and metakaolin prepared by production method |
| CN111099600B (en) * | 2019-12-31 | 2021-11-26 | 内蒙古超牌新材料股份有限公司 | Production method of metakaolin with low water demand and high activity and metakaolin prepared by production method |
| CN117550617A (en) * | 2023-12-29 | 2024-02-13 | 安徽金岩高岭土新材料股份有限公司 | Technology for preparing mullite by taking coal-series kaolinite as raw material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1167617C (en) | 2004-09-22 |
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