CN107365095B - Calcium phosphate silicon magnesium cement and preparation method thereof - Google Patents
Calcium phosphate silicon magnesium cement and preparation method thereof Download PDFInfo
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- CN107365095B CN107365095B CN201710823576.1A CN201710823576A CN107365095B CN 107365095 B CN107365095 B CN 107365095B CN 201710823576 A CN201710823576 A CN 201710823576A CN 107365095 B CN107365095 B CN 107365095B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/02—Phosphate cements
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Abstract
The invention belongs to the technical field of cement preparation, and particularly relates to calcium phosphate silicon magnesium cement and a preparation method thereof.
Description
Technical Field
The invention belongs to the technical field of cement preparation, and particularly relates to calcium phosphate silicon magnesium cement and a preparation method thereof.
Background
The magnesium silicate cement has the excellent performances of quick hardening, high early strength, high bonding strength, small dry shrinkage deformation and the like, is very suitable for the quick repair of expressways, airport runways and municipal arterial roads, and has wide application prospect in the aspects of the rush repair and the rush repair of military engineering and the solidification of harmful substances.
Magnesium phosphate cement in the prior art is basically prepared by taking light magnesium oxide and monoammonium phosphate as main raw materials and simultaneously doping a small amount of retarder, but the light magnesium oxide is high in price, and after magnesium oxide is doped in a large amount, the magnesium phosphate cement is high in contractibility, so that the prepared magnesium phosphate cement has the quality defects of high price and large contraction, and is difficult to market popularization; the material is prepared by adopting magnesium oxide, diammonium hydrogen phosphate, boric acid, aluminate cement, fly ash, rubber powder, polypropylene fiber, redispersible latex powder, silica sol and water as raw materials, is convenient to construct, has a lasting effect after curing, and has quick and lasting repair capability for most disease forms of the cement concrete pavement; but its strength and water resistance are not ideal.
Disclosure of Invention
In order to solve the technical problems, the invention provides calcium phosphate silicon magnesium cement and a preparation method thereof.
The method is realized by the following technical scheme:
the calcium phosphate silicon magnesium cement comprises, by weight, 30-70 parts of diammonium phosphate, 30-70 parts of magnesium oxide light calcined powder, 20-60 parts of fly ash and 7-23 parts of an additive.
The raw materials comprise, by weight, 52 parts of diammonium phosphate, 45 parts of magnesium oxide light-burned powder, 45 parts of fly ash and 20 parts of an additive.
The raw materials of the additive comprise dry-base phosphogypsum, borax, silicon dioxide micro powder, aluminum dihydrogen phosphate and magnesium phosphate.
2-6 parts of dry-base phosphogypsum, 2-6 parts of borax, 1-5 parts of silica micro powder, 1-3 parts of aluminum dihydrogen phosphate and 1-3 parts of magnesium phosphate.
The preparation method of the cement comprises the following steps:
(1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 200-400 meshes, and respectively grinding diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate to 100-180 meshes;
(2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing;
(3) and (4) putting the uniformly stirred mixture into a dryer for drying to obtain the calcium phosphate silicon magnesium cement.
The drying temperature is 60-150 ℃.
The magnesium phosphate is ground to 160 meshes.
The aluminum dihydrogen phosphate is ground to 120 meshes.
Advantageous effects
The calcium phosphate silicon magnesium cement is prepared by taking diammonium phosphate, magnesium oxide light burning powder, fly ash, dry-base phosphogypsum, borax, silicon dioxide micro powder, aluminum dihydrogen phosphate and magnesium phosphate as raw materials through processes of crushing, mixing, drying and the like according to a reasonable proportion, and can effectively improve the strength and water resistance of the cement and reduce the shrinkage of the cement.
The cement prepared by the scheme of the invention is added into the machine-made sand with the mass ratio of 50% in the test group, the mixture is stirred for 1-3 min, the mixture is quickly stirred for 90s after being added with water, the mixture is placed into a mold for molding for 1h, then the mold is removed, and the mixture is naturally cured in the air; the contrast group adopts the patching material prepared by patent CN201310060491.4, and the patching material is put into a mould to be moulded for 1 hour, then the mould is removed, and the mould is naturally cured in the air; the flexural strength and the water resistance of the two groups of materials are respectively measured, and the strength is measured according to GB/T171671-1999 cement mortar strength test method (ISO method); the water resistance was measured with reference to test methods for long-term concrete performance and durability (GB/T50082-2009), and the results are shown in the following table:
the test results show that the flexural strength of the test group cement is superior to that of the control group, and the water resistance coefficient of the test group cement is higher than that of the control group.
Detailed Description
The technical solution of the present invention is further limited by the following specific embodiments, but the scope of the claims is not limited to the description.
Example 1
The calcium phosphate-silicon-magnesium cement comprises 30kg of diammonium phosphate, 30kg of magnesia light-burned powder, 20kg of fly ash and 7kg of additive in parts by weight.
The additive comprises 2kg of dry-basis phosphogypsum, 2kg of borax, 1kg of silicon dioxide micropowder, 1kg of aluminum dihydrogen phosphate and 1kg of magnesium phosphate in parts by weight.
The preparation method of the cement comprises the following steps:
(1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 200 meshes, and respectively grinding diammonium phosphate, silicon dioxide micro powder, aluminium dihydrogen phosphate and magnesium phosphate to 100 meshes;
(2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing;
(3) and (4) putting the uniformly stirred mixture into a dryer for drying to obtain the calcium phosphate silicon magnesium cement.
The drying temperature is 60 ℃.
Example 2
The calcium phosphate-silicon-magnesium cement comprises, by weight, 70kg of diammonium phosphate, 70kg of magnesia light-burned powder, 60kg of fly ash and 23kg of an additive.
The additive comprises 6kg of dry-base phosphogypsum, 6kg of borax, 5kg of silicon dioxide micro powder, 3kg of aluminum dihydrogen phosphate and 3kg of magnesium phosphate in parts by weight.
The preparation method of the cement comprises the following steps:
(1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 400 meshes, and respectively grinding diammonium phosphate, silicon dioxide micro powder, aluminium dihydrogen phosphate and magnesium phosphate to 180 meshes;
(2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing;
(3) and (4) putting the uniformly stirred mixture into a dryer for drying to obtain the calcium phosphate silicon magnesium cement.
The drying temperature is 150 ℃.
Example 3
The calcium phosphate-silicon-magnesium cement comprises 30kg of diammonium phosphate, 70kg of magnesia light-burned powder, 40kg of fly ash and 18kg of additive in parts by weight.
The additive comprises 4kg of dry-base phosphogypsum, 5kg of borax, 3kg of silicon dioxide micro powder, 3kg of aluminum dihydrogen phosphate and 3kg of magnesium phosphate in parts by weight.
The preparation method of the cement comprises the following steps:
(1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 300 meshes, respectively grinding diammonium phosphate and silicon dioxide micropowder to 140 meshes, grinding magnesium phosphate to 160 meshes and grinding aluminium dihydrogen phosphate to 120 meshes;
(2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing;
(3) and (4) putting the uniformly stirred mixture into a dryer for drying to obtain the calcium phosphate silicon magnesium cement.
The drying temperature is 120 ℃.
Example 4
The calcium phosphate-silicon-magnesium cement comprises 70kg of diammonium phosphate, 30kg of magnesia light-burned powder, 20kg of fly ash and 10kg of additive in parts by weight.
The additive comprises 3kg of dry-base phosphogypsum, 2kg of borax, 2kg of silica micropowder, 1kg of aluminum dihydrogen phosphate and 2kg of magnesium phosphate in parts by weight.
The preparation method of the cement comprises the following steps:
(1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 350 meshes, and respectively grinding diammonium phosphate, silicon dioxide micro powder, aluminium dihydrogen phosphate and magnesium phosphate to 160 meshes;
(2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing;
(3) and (4) putting the uniformly stirred mixture into a dryer for drying to obtain the calcium phosphate silicon magnesium cement.
The drying temperature is 130 ℃.
The above-mentioned experimental examples and embodiments are further illustrative and understood, and should not be construed as further limitations on the technical solutions of the present invention, and the invention which does not provide any significant essential features and significant improvements made by those skilled in the art still belongs to the protection scope of the present invention.
Claims (3)
1. The calcium phosphate silicon magnesium cement is characterized in that raw materials comprise, by weight, 30-70 parts of diammonium phosphate, 30-70 parts of magnesium oxide light burning powder, 20-60 parts of fly ash and 7-23 parts of an additive; the raw materials of the additive are dry-base phosphogypsum, borax, silicon dioxide micro powder, aluminum dihydrogen phosphate and magnesium phosphate; the additive comprises the following raw materials in parts by weight: 2-6 parts of dry-base phosphogypsum, 2-6 parts of borax, 1-5 parts of silica micro powder, 1-3 parts of aluminum dihydrogen phosphate and 1-3 parts of magnesium phosphate.
2. The calcium phosphate silicon magnesium cement as claimed in claim 1, wherein the raw materials comprise, by weight, 52 parts of diammonium phosphate, 45 parts of magnesia light-burned powder, 45 parts of fly ash and 20 parts of additives.
3. The method for preparing a calcium phosphate silicomagnesium cement according to claim 1, comprising the steps of: (1) firstly, respectively grinding magnesium oxide light burning powder, dry-base phosphogypsum, borax and fly ash to 200-400 meshes, and respectively grinding diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate to 100-180 meshes; (2) putting the ground magnesium oxide light burning powder, dry-base phosphogypsum, borax, fly ash, diammonium phosphate, silica micro powder, aluminum dihydrogen phosphate and magnesium phosphate into a stirrer for mixing; (3) putting the uniformly stirred mixture into a dryer for drying to prepare calcium phosphate silicon magnesium cement;
the drying temperature is 60-150 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060454A (en) * | 2010-11-22 | 2011-05-18 | 内蒙古祥响新型建材开发有限责任公司 | Light-burned dolomite cement |
| CN102452830A (en) * | 2010-10-29 | 2012-05-16 | 深圳大学 | Phosphate cement bond polystyrene foam particle thermal insulating material |
| CN103726626A (en) * | 2013-12-13 | 2014-04-16 | 青岛无为保温材料有限公司 | Thermal insulation and heat preservation decorative board for wall |
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| US20090249980A1 (en) * | 2008-03-17 | 2009-10-08 | Gimvang Bo H | Cementitious composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452830A (en) * | 2010-10-29 | 2012-05-16 | 深圳大学 | Phosphate cement bond polystyrene foam particle thermal insulating material |
| CN102060454A (en) * | 2010-11-22 | 2011-05-18 | 内蒙古祥响新型建材开发有限责任公司 | Light-burned dolomite cement |
| CN103726626A (en) * | 2013-12-13 | 2014-04-16 | 青岛无为保温材料有限公司 | Thermal insulation and heat preservation decorative board for wall |
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Effective date of registration: 20180314 Address after: 550000 Guizhou city in Guiyang Province, Guiyang national hi tech Industrial Development Zone, an even Highway No. 28 high tech industry R & D and production base of building 4 14-4-5 Applicant after: Guizhou phosphorus and magnesium materials Co., Ltd. Address before: Xifeng County in Guizhou Province, Guiyang city town 551109 Applicant before: Guizhou Kailin Phosphogypsum Utilization Co., Ltd. |
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