CN104446641A - Magnesium oxychloride cement foam block and preparation method thereof - Google Patents
Magnesium oxychloride cement foam block and preparation method thereof Download PDFInfo
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- CN104446641A CN104446641A CN201410730274.6A CN201410730274A CN104446641A CN 104446641 A CN104446641 A CN 104446641A CN 201410730274 A CN201410730274 A CN 201410730274A CN 104446641 A CN104446641 A CN 104446641A
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- oxychloride cement
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Abstract
The invention discloses a preparation method of a magnesium oxychloride cement foam block and a preparation method thereof. The preparation method comprises the following steps: A, mixing a water-resistant additive with active magnesium oxide evenly to form mixed powder; B, adding a magnesium chloride water solution to the mixed powder, and mixing evenly to form a magnesium cement paste; and C, introducing foam into the magnesium cement paste to form magnesium oxychloride cement foam mixed slurry, and forming the magnesium oxychloride cement foam block through reverse mold molding and conserving. The preparation method is simple and easy to operate. The invention also discloses the magnesium oxychloride cement foam block prepared by the preparation method. The magnesium oxychloride cement foam block has the advantages of high strength, light weight, high durability, rapidness in solidification and the like, further is good in water resistance, can be used for building a wall body; and a lot of magnesium oxychloride cement foam blocks are bonded through a binder, so as to form an overall house wall body.
Description
Technical field
The invention belongs to building material technical field, specifically, relate to a kind of magnesia oxychloride cement foamed building block and preparation method thereof.
Background technology
Magnesia oxychloride cement (being called for short magnesium cement) is the air hardening cementitious materials formed with finite concentration magnesium chloride solution mix magnesia powder, and main hydration products is oxychlorination magnesium [Mg
3(OH)
5cl4H
2o] and Mg (OH)
2.In magnesium cement slurry, be filled with bubble or add whipping agent and can be prepared into magnesium cement foam concrete segment, it has, and intensity is high, lightweight, weather resistance are strong, fast setting, maintenance easily and the advantage such as production process environmental protection.
The concrete major gelled material magnesium chloride of magnesium cement foam, magnesium oxide resources reserve enrich, and a large amount of magnesium chloride fails to develop.And the bischofite (MgCl of salt lake by-product
26H
2o) be prepare the desirable raw material of magnesium cement, without the need to refining.But water resisting property is the principal element affecting the application of magnesium cement foam concrete, and the characteristic of main hydration products easy corrosion in water of magnesium cement makes its Application Areas be restricted.
The water tolerance of material is itself and water Long Term Contact or under the effect of water, continues the ability that keeps its performance constant.Magnesia oxychloride cement water tolerance is very poor, and its hardenite can lose intensity gradually in water, and loss of strength rate can reach 60% ~ 80%.Properties of Magnesium Oxychloride Cement such as damp suction surface halide accumulation, water resisting property shortcoming govern the development of its goods always.For solving the feature of water resisting property difference, domestic and international adopted method has two kinds, and a kind of is that the curing condition changing magnesium cement slurry makes it form the low hydrated product of some solubleness, and this method is more common in Japan, United States Patent (USP).Another kind method adds additive in original component of magnesia oxychloride cement.
Wherein, the method adding additive transferred research phosphoric acid salt, organic acid and superpolymer water repellent agent that is water-soluble and water-latex type from vitriol as water repellent agent in recent years, but never addressed this problem very well.
Summary of the invention
For solving above-mentioned prior art Problems existing, the invention provides a kind of magnesia oxychloride cement foamed building block and preparation method thereof, this magnesia oxychloride cement foamed building block by adding water resistant additive and filled and process in the process of preparation, prepared the magnesium cement block that can be applicable to building field, it also meets the good water resisting property as material of construction simultaneously.
In order to reach foregoing invention object, present invention employs following technical scheme:
A preparation method for magnesia oxychloride cement foamed building block, comprises step: A, water resistant additive and activated magnesia are mixed into mixed powder; B, in described mixed powder, add magnesium chloride brine be mixed to form magnesium cement slurry; C, in described magnesium cement slurry, introduce foam after form magnesia oxychloride cement foams mix slurry, maintenance shaping by reverse mould forms described magnesia oxychloride cement foamed building block.
Further, in described step C, this magnesia oxychloride cement foams mix slurry is poured in mould, the demoulding after maintenance 3d, then at 5 DEG C ~ 45 DEG C maintenance 14d ~ 28d, obtain magnesia oxychloride cement foamed building block.
Further, in described magnesia oxychloride cement foamed building block, the quality of described foam is 0.1% ~ 10% of the quality of described magnesium cement slurry.
Further, in described mixed powder, the mass ratio of described water resistant additive and described activated magnesia is 1 ~ 6:2 ~ 13.
Further, in described water resistant magnesium cement slurry, the quality of described mixed powder and the mass ratio of described magnesium chloride brine are 20:9 ~ 24.
Further, the preparation method of described foam is included in described magnesium cement slurry and is filled with foam or adds whipping agent in described magnesium cement slurry.
Further, the preparation method of described water resistant additive is: phosphoric acid salt, mineral admixture and water are configured to slurry, and described slurry obtains described water resistant additive through heating aquation, oven dry, grinding; Wherein, the mass ratio of described phosphoric acid salt and described mineral admixture, water is 1:0.5 ~ 5:1 ~ 6.
Further, described activated magnesia derives from any one in light-magnesite powder, caustic dolomite powder.
Further, the concentration of described magnesium chloride brine is 20 ° of B é ~ 30 ° B é.
Another object of the present invention is also to provide a kind of magnesia oxychloride cement foamed building block, comprises water resistant additive and activated magnesia that mass ratio is 1 ~ 6:2 ~ 13; And magnesium chloride brine, foam; Wherein, described water resistant additive and activated magnesia quality and be 20:9 ~ 24 with the mass ratio of described magnesium chloride brine; The quality of described water resistant additive, activated magnesia and magnesium chloride brine and be 100:0.1 ~ 10 with the mass ratio of described foam; The concentration of described magnesium chloride brine is 20 ° of B é ~ 30 ° B é.
The present invention by adding water resistant additive and filled and process in the process of preparation, obtain the magnesia oxychloride cement foamed building block that can be applicable to building field, this magnesia oxychloride cement foamed building block also meets the good water resisting property as material of construction simultaneously, and the preparation method of this magnesia oxychloride cement foamed building block is simple, easy handling.
Accompanying drawing explanation
The following description carried out in conjunction with the drawings, the above-mentioned and other side of embodiments of the invention, feature and advantage will become clearly, in accompanying drawing:
Fig. 1 is the flow chart of steps of the preparation method of magnesia oxychloride cement foamed building block according to an embodiment of the invention.
Embodiment
Below, embodiments of the invention are described in detail with reference to the accompanying drawings.But, the present invention can be implemented in many different forms, and the present invention should not be interpreted as being limited to the specific embodiment of setting forth here.On the contrary, provide these embodiments to be to explain principle of the present invention and practical application thereof, thus enable others skilled in the art understand various embodiment of the present invention and be suitable for the various amendments of certain expected application.
Embodiment 1
Fig. 1 is the flow chart of steps of the preparation method of magnesia oxychloride cement foamed building block according to an embodiment of the invention.
With reference to Fig. 1, the preparation method of magnesia oxychloride cement foamed building block comprises the steps: according to an embodiment of the invention
In step 110, water resistant additive is prepared.
Particularly, 1 part of primary ammonium phosphate and 1 part of flyash and 1 part of water are inserted in agitator, boiling is carried out after abundant mixing, temperature controls be not less than 50 DEG C, cooking time controls at 30min ~ 150min, primary ammonium phosphate is dissolved completely, forms gelatinous mixture (being also called slurry).Again the oven dry of this slurry, grinding are obtained water resistant additive.Above-mentioned number is mass fraction.Herein, there is no particular restriction, to reach the object of oven dry for dry temperature; The size controlling of the water resistant additive after grinding is at 160 order ~ 220 orders.
In the step 120, water resistant additive step 110 obtained and activated magnesia mix and form mixed powder.
In the present embodiment, activated magnesia comes from light-magnesite powder, and wherein the content of activated magnesia is 40% ~ 45%; Those skilled in the art are known, can obtain the mass ratio of light-magnesite powder and water resistant additive after simply converting.In the present embodiment, the water resistant additive that 85 parts of these light-magnesite powder and 15 parts of steps 110 obtain is mixed, obtains uniform mixed powder.
In step 130, mixed powder and magnesium chloride brine are mixed form magnesium cement slurry.
Particularly, the magnesium chloride solution of 25 ° of B é is first configured; ° B é is the unit of degree Beaume, and degree Beaume is a kind of method representing strength of solution, and it is measured by Beaumé scale.
Then, mixed powder step 120 obtained 100 parts mixes with above-mentioned magnesium chloride brine 65 parts, obtains magnesium cement slurry.
In step 140, form magnesia oxychloride cement foams mix slurry in magnesium cement slurry after introducing foam, maintenance shaping by reverse mould forms magnesia oxychloride cement foamed building block.
In the present embodiment, adopt the mode of physical blowing to manufacture foam, namely with foaming machine, commercially available animals and plants whipping agent is blow molded into foam, makes 2.5kg foam and be filled with in the above-mentioned magnesium cement slurry of 100kg, form magnesia oxychloride cement foams mix slurry; Again this magnesia oxychloride cement foams mix slurry is poured in mould, the demoulding after maintenance 3d, then at 5 DEG C ~ 45 DEG C maintenance 14d ~ 28d, obtain magnesia oxychloride cement foamed building block.But the present invention is not restricted to this, to form magnesia oxychloride cement foams mix slurry by adding the modes such as whipping agent in water resistant magnesium cement slurry.
The magnesia oxychloride cement foamed building block prepared by above-mentioned preparation method can be used as building of body of wall, is bondd between this large amount of magnesia oxychloride cement foamed building blocks by binding agent, forms overall house wall.
Embodiment 2
In the description of embodiment 2, do not repeat them here with the something in common of embodiment 1, only describe the difference with embodiment 1.Embodiment 2 is with the difference of embodiment 1, and in the step 120, activated magnesia comes from caustic dolomite powder, and wherein the content of activated magnesia is 25% ~ 30%.Can obtain after simple conversion, containing activated magnesia 25 ~ 30 parts in every 100 parts of these caustic dolomite powder; 100 parts of caustic dolomite powder are mixed with 20 parts of water resistant additives, obtains uniform mixed powder; In step 130, the magnesium chloride brine 60 part of above-mentioned mixed powder 100 parts with 25 ° of B é is mixed, obtains magnesium cement slurry; Other operations are all consistent with embodiment 1, prepare magnesia oxychloride cement foamed building block.
Embodiment 3
In the description of embodiment 3, do not repeat them here with the something in common of embodiment 1, only describe the difference with embodiment 1.Embodiment 3 is with the difference of embodiment 1, and in step 110, water resistant additive is prepared from by 1 part of sodium phosphate, 0.5 part of silicon ash and 6 parts of water, and wherein, described number is mass fraction; In the step 120, activated magnesia comes from caustic dolomite powder, and wherein the content of activated magnesia is 10% ~ 12%; 200 parts of caustic dolomite powder are mixed with 10 parts of water resistant additives, obtains uniform mixed powder, in other words, in this mixed powder, comprise the water resistant additive that 20 ~ 24 parts of activated magnesias and 10 parts of steps 110 obtain; In step 130, the magnesium chloride brine 110 part of above-mentioned mixed powder 200 parts with 30 ° of B é is mixed, obtains magnesium cement slurry; In step 140, in 200 parts of magnesium cement slurries, add 20 parts of hydrogen peroxide as whipping agent, through mould molding and maintenance forms magnesia oxychloride cement foamed building block.
Embodiment 4
In the description of embodiment 4, do not repeat them here with the something in common of embodiment 1, only describe the difference with embodiment 1.Embodiment 4 is with the difference of embodiment 1, and in step 110, water resistant additive is prepared from by 1 part of dipotassium hydrogen phosphate, 5 parts of slags and 3 parts of water, and wherein, described number is mass fraction; In the step 120, activated magnesia comes from light-magnesite powder, and wherein the content of activated magnesia is 60% ~ 65%, and those skilled in the art are known, namely containing 60 ~ 65 parts of activated magnesias in every 100 parts of these light-magnesite powder; In the present embodiment, 50 parts of light-magnesite powder mixed with 15 parts of water resistant additives, obtain uniform mixed powder, namely this mixed powder comprises the activated magnesia of about 30 ~ 32 parts; In step 130, the magnesium chloride brine 45 part of above-mentioned mixed powder 100 parts with 20 ° of B é is mixed, obtains magnesium cement slurry; In step 140, in 100 parts of magnesium cement slurries, add 0.1 part of 12 this sodium sulfonate of cyclic group as whipping agent, through mould molding and maintenance forms magnesia oxychloride cement foamed building block.
Embodiment 5
In the description of embodiment 5, do not repeat them here with the something in common of embodiment 1, only describe the difference with embodiment 1.Embodiment 5 is with the difference of embodiment 1, and in step 110, water resistant additive is prepared from by 1 part of SODIUM PHOSPHATE, MONOBASIC, 2 parts of flyash and 4 parts of water, and wherein, described number is mass fraction; In the step 120, activated magnesia comes from light-magnesite powder, and wherein the content of activated magnesia is 50% ~ 55%; In the present embodiment, 100 parts of light-magnesite powder are mixed with 10 parts of water resistant additives, obtains uniform mixed powder, containing the activated magnesia of about 50 ~ 55 parts in this mixed powder; In step 130, the magnesium chloride brine 60 part of above-mentioned mixed powder 50 parts with 20 ° of B é is mixed, obtains magnesium cement slurry; In step 140, in 50 parts of magnesium cement slurries, add 3 parts of hydrogen peroxide as whipping agent, through mould molding and maintenance forms magnesia oxychloride cement foamed building block.
Although illustrate and describe the present invention with reference to specific embodiment, but it should be appreciated by those skilled in the art that: when not departing from the spirit and scope of the present invention by claim and equivalents thereof, the various changes in form and details can be carried out at this.
Claims (10)
1. a preparation method for magnesia oxychloride cement foamed building block, is characterized in that, comprises step:
A, water resistant additive and activated magnesia are mixed into mixed powder;
B, in described mixed powder, add magnesium chloride brine, be mixed into magnesium cement slurry;
C, in described magnesium cement slurry, introduce foam after form magnesia oxychloride cement foams mix slurry, maintenance shaping by reverse mould forms described magnesia oxychloride cement foamed building block.
2. preparation method according to claim 1, is characterized in that, in described step C, pours in mould, the demoulding after maintenance 3d by this magnesia oxychloride cement foams mix slurry, then at 5 DEG C ~ 45 DEG C maintenance 14d ~ 28d, obtain magnesia oxychloride cement foamed building block.
3., according to the arbitrary described preparation method of claim 1 or 2, it is characterized in that, in described magnesia oxychloride cement foamed building block, the quality of described foam is 0.1% ~ 10% of the quality of described magnesium cement slurry.
4., according to the arbitrary described preparation method of claim 1 or 2, it is characterized in that, in described mixed powder, the mass ratio of described water resistant additive and described activated magnesia is 1 ~ 6:2 ~ 13.
5., according to the arbitrary described preparation method of claim 1 or 2, it is characterized in that, in described water resistant magnesium cement slurry, the quality of described mixed powder and the mass ratio of described magnesium chloride brine are 20:9 ~ 24.
6. preparation method according to claim 3, is characterized in that, the preparation method of described foam is included in described magnesium cement slurry and is filled with foam or adds whipping agent in described magnesium cement slurry.
7. preparation method according to claim 1, is characterized in that, the preparation method of described water resistant additive is: phosphoric acid salt, mineral admixture and water are configured to slurry, and described slurry obtains described water resistant additive through heating aquation, oven dry, grinding;
Wherein, the mass ratio of described phosphoric acid salt and described mineral admixture, water is 1:0.5 ~ 5:1 ~ 6.
8. preparation method according to claim 1, is characterized in that, described activated magnesia derive from light-magnesite powder, caustic dolomite powder any one.
9. preparation method according to claim 1, is characterized in that, the concentration of described magnesium chloride brine is 20 ° of B é ~ 30 ° B é.
10. a magnesia oxychloride cement foamed building block, is characterized in that, comprises water resistant additive and activated magnesia that mass ratio is 1 ~ 6:2 ~ 13; And magnesium chloride brine, foam; Wherein, described water resistant additive and activated magnesia quality and be 20:9 ~ 24 with the mass ratio of described magnesium chloride brine; The quality of described water resistant additive, activated magnesia and magnesium chloride brine and be 100:0.1 ~ 10 with the mass ratio of described foam; The concentration of described magnesium chloride brine is 20 ° of B é ~ 30 ° B é.
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| CN201410730274.6A CN104446641A (en) | 2014-12-03 | 2014-12-03 | Magnesium oxychloride cement foam block and preparation method thereof |
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| CN201410730274.6A CN104446641A (en) | 2014-12-03 | 2014-12-03 | Magnesium oxychloride cement foam block and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347840A (en) * | 2015-12-03 | 2016-02-24 | 中国科学院青海盐湖研究所 | Economic wall foamed block material and preparation method thereof |
| CN105367121A (en) * | 2015-12-03 | 2016-03-02 | 中国科学院青海盐湖研究所 | Magnesium cement-based foamed concrete block and preparation method therefor |
| CN106278125A (en) * | 2016-08-15 | 2017-01-04 | 马鞍山十七冶工程科技有限责任公司 | The regeneration aggregate light-weight wall material of a kind of modified ecological fiber reinforcement and preparation method |
| CN110423133A (en) * | 2018-11-22 | 2019-11-08 | 中国科学院青海盐湖研究所 | A kind of magnesia oxychloride cement foam concrete air hole structure modelling and characterizing method based on modified magnesium oxychloride cement |
| DE102018008701A1 (en) | 2018-11-06 | 2020-05-07 | K+S Aktiengesellschaft | Use of mineral foam to cover the stockpile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396140A (en) * | 2002-07-11 | 2003-02-12 | 龚德馨 | Light-weight foamed magnesia wall slab |
| CN102030488A (en) * | 2010-10-25 | 2011-04-27 | 中国科学院青海盐湖研究所 | Method for producing caustic dolomite used as raw material of magnesia cement from dolomite ore |
| CN102070353A (en) * | 2010-11-22 | 2011-05-25 | 中国科学院青海盐湖研究所 | Light-burned dolomite foam light partition board |
-
2014
- 2014-12-03 CN CN201410730274.6A patent/CN104446641A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396140A (en) * | 2002-07-11 | 2003-02-12 | 龚德馨 | Light-weight foamed magnesia wall slab |
| CN102030488A (en) * | 2010-10-25 | 2011-04-27 | 中国科学院青海盐湖研究所 | Method for producing caustic dolomite used as raw material of magnesia cement from dolomite ore |
| CN102070353A (en) * | 2010-11-22 | 2011-05-25 | 中国科学院青海盐湖研究所 | Light-burned dolomite foam light partition board |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347840A (en) * | 2015-12-03 | 2016-02-24 | 中国科学院青海盐湖研究所 | Economic wall foamed block material and preparation method thereof |
| CN105367121A (en) * | 2015-12-03 | 2016-03-02 | 中国科学院青海盐湖研究所 | Magnesium cement-based foamed concrete block and preparation method therefor |
| CN106278125A (en) * | 2016-08-15 | 2017-01-04 | 马鞍山十七冶工程科技有限责任公司 | The regeneration aggregate light-weight wall material of a kind of modified ecological fiber reinforcement and preparation method |
| DE102018008701A1 (en) | 2018-11-06 | 2020-05-07 | K+S Aktiengesellschaft | Use of mineral foam to cover the stockpile |
| WO2020094598A1 (en) | 2018-11-06 | 2020-05-14 | K+S Aktiengesellschaft | Use of mineral foam for covering heaps |
| CN110423133A (en) * | 2018-11-22 | 2019-11-08 | 中国科学院青海盐湖研究所 | A kind of magnesia oxychloride cement foam concrete air hole structure modelling and characterizing method based on modified magnesium oxychloride cement |
| CN110423133B (en) * | 2018-11-22 | 2021-10-26 | 中国科学院青海盐湖研究所 | Method for manufacturing and characterizing magnesium oxychloride cement foam concrete air hole structure model based on modified magnesium oxychloride cement |
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Application publication date: 20150325 |