CN107601927A - A kind of preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength - Google Patents
A kind of preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength Download PDFInfo
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- CN107601927A CN107601927A CN201710924070.XA CN201710924070A CN107601927A CN 107601927 A CN107601927 A CN 107601927A CN 201710924070 A CN201710924070 A CN 201710924070A CN 107601927 A CN107601927 A CN 107601927A
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- oxychloride cement
- magnesium oxychloride
- preparation
- phosphorous
- advantageous
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- 239000004568 cement Substances 0.000 title claims abstract description 41
- IQYKECCCHDLEPX-UHFFFAOYSA-N chloro hypochlorite;magnesium Chemical compound [Mg].ClOCl IQYKECCCHDLEPX-UHFFFAOYSA-N 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910001868 water Inorganic materials 0.000 title claims abstract description 36
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 54
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 44
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 27
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 230000002940 repellent Effects 0.000 claims description 9
- 239000005871 repellent Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- PLMFYJJFUUUCRZ-UHFFFAOYSA-M decyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCC[N+](C)(C)C PLMFYJJFUUUCRZ-UHFFFAOYSA-M 0.000 claims description 5
- 239000003093 cationic surfactant Substances 0.000 claims description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- 239000003125 aqueous solvent Substances 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 2
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 2
- 235000011007 phosphoric acid Nutrition 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 238000006703 hydration reaction Methods 0.000 abstract description 5
- 230000036632 reaction speed Effects 0.000 abstract description 3
- 230000036571 hydration Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical group [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- 229910052749 magnesium Inorganic materials 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012456 homogeneous solution Substances 0.000 description 3
- YVJMHXASNQRSDG-UHFFFAOYSA-L magnesium phosphoric acid dichloride Chemical compound [Mg++].[Cl-].[Cl-].OP(O)(O)=O YVJMHXASNQRSDG-UHFFFAOYSA-L 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- WGKMWBIFNQLOKM-UHFFFAOYSA-N [O].[Cl] Chemical compound [O].[Cl] WGKMWBIFNQLOKM-UHFFFAOYSA-N 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to magnesium oxychloride cement to be modified field, more particularly to a kind of preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength：By adding specific surfactant when preparing magnesium oxychloride cement slurry the progress that promotes the early hydration of magnesium oxychloride cement to react, accelerate hydration reaction speed, setting time is reduced, prepared magnesium oxychloride cement just can be obtained higher intensity in maintenance early stage.
Description
Technical field
The invention belongs to magnesium oxychloride cement to be modified field, more particularly to a kind of high water ratio for being advantageous to improve early strength
The preparation method of phosphorous magnesium oxychloride cement.
Background technology
Magnesium oxychloride cement is a kind of air-hardening cement gel rubber material different from traditional suitable positions, in
By widely being paid close attention to and being applied after Sweden's scientist's Sorel inventions, have benefited from it relative to Conventional Portland water within 1867
Possesses more excellent performance for mud, magnesium oxychloride cement has that high-strength, morning is strong, corrosion-resistant, wear-resisting, thermal conductivity factor is low, anti-
Fiery performance waits well premium properties；Moreover, magnesium oxychloride cement also plays an important role for energy-conserving and environment-protective, magnesium oxychloride cement
Product moist need not conserve, it is not required that some Thermal Equipments such as steam-cured and dry, can effectively reduce energy consumption.But chlorine oxygen
The defects of some obvious damp suction surface halide accumulations of magnesium cement, water-resistance difference largely hinder its it is further develop, in order to
Solve these drawbacks, domestic and foreign scholars have done many researchs, also achieve huge progress, are solving magnesium oxychloride cement water resistant
Property difference aspect, it is now recognized that more effective manner is to add phosphoric acid or soluble phosphate, chlorine oxygen can be obviously improved
Change the water-resistance of magnesium cement, but can also slow down the rate of set of magnesium oxychloride cement while the addition of most of water repellent agents, lead
Cause the reduction of magnesium oxychloride cement early strength.
The industrial production of another aspect Salt Lake Area can produce substantial amounts of by-product magnesium chloride, if mustn't go to effective profit
With the waste of resource will certainly be caused, and in addition, a lot of other industrial accessory substances and waste material can not such as obtain properly
Processing will also result in the waste of material and the pollution of environment, such as power plant's waste material flyash, engineering waste material wood sawdust, granite
Waste material etc..It is that such discarded object is added into magnesium oxychloride cement mostly in the present research on magnesium oxychloride cement,
The performance of oxychloride magnesium is improved while effectively utilizing these industrial wastes.Often needed while a large amount of industrial wastes are doped with
The proportioning of magnesium oxychloride cement reclaimed water is increased, to obtain preferable mobility and operability, but in magnesium oxychloride cement
In too high water than will cause setting time slow down and the reduction of intensity.The presence of these problems will all influence oxychloride
Application and development of the magnesium cement in Practical Project.
The content of the invention
The present invention is directed in the prior art, the oxychloride magnesium water entirely different in chemical composition with traditional portland
Mud, especially for the high water for adulterating various additives and designing than magnesium oxychloride cement slurry, and added with phosphoric acid and can
Magnesium oxychloride cement of the soluble phosphoric acid salt as water repellent agent, the problem of its early strength is low, rate of set is slow, there is provided Yi Zhongyou
Beneficial to preparation method of the high water than phosphorous magnesium oxychloride cement for improving early strength：By preparing magnesium oxychloride cement slurry
Shi Tianjia specific surfactants accelerate hydration reaction speed the progress that promotes the early hydration of magnesium oxychloride cement to react,
Setting time is reduced, prepared magnesium oxychloride cement just can be obtained higher intensity in maintenance early stage,
Concretely comprise the following steps：
(1) phosphorous water repellent agent is added in magnesium chloride solution and is sufficiently stirred；
(2) surfactant is added in the mixture obtained by step (1) and is sufficiently stirred,
Wherein, surfactant is CTAB or DTAB cationic surfactant；
(3) light calcined magnesia is added in the mixture obtained by step (2) and is sufficiently stirred to form oxychloride magnesium water
Slurry body, gained slurry is poured into mould after conserving, is stripped and continues to conserve in atmosphere,
In light calcined magnesia, mass fraction >=50% of magnesia, and mass fraction >=50% of activated magnesia,
Activated magnesia is 5~8 with the mol ratio of solute magnesium chloride and aqueous solvent in magnesium chloride solution in step (1)：1：
13~28,
Phosphorous water repellent agent is phosphoric acid, sodium dihydrogen phosphate or ammonium dihydrogen phosphate, addition for magnesia gross mass 0.5%~
1.5%,
Surfactant addition is 0.5 ‰~the 2 ‰ of magnesia gross mass.
Embodiment
Embodiment 1
In light calcined magnesia powder used in the present embodiment, the mass fraction of activated magnesia is 63%, and magnesia is total
Mass content be 84.27%,
Mol ratio according to activated magnesia, magnesium chloride, water is 6：1：16th, the dosage of water repellent agent phosphoric acid is magnesia quality
1%, 1 ‰ that CTAB dosage is magnesia quality,
(1) the magnesium chloride phosphoric acid soluble in water that adds is mixed into homogeneous solution,
(2) Surfactant CTAB is added in the solution obtained by step (1) and is sufficiently stirred,
(3) light calcined magnesia is added in the mixture obtained by step (2) and is sufficiently stirred to form oxychloride magnesium water
Slurry body, gained slurry is poured into 40mm × 40mm × 160mm stainless steel mould after conserving 1 day, be stripped and in atmosphere
Continue to conserve, the compression strength after conserving 7 days is 50Mpa, and detects containing for the magnesium chloride that in system dissociates in the process
Amount is obvious to be reduced, and free magnesium chloride mass content is 4.01% in system after conserving 7 days, also illustrates that this programme accelerates magnesium chloride
Hydration reaction speed.
Embodiment 2
Light calcined magnesia powder is same as Example 1 used in the present embodiment,
Mol ratio according to activated magnesia, magnesium chloride, water is 7：1：20th, the dosage of water repellent agent phosphoric acid is magnesia quality
1%, 1 ‰ that CTAB dosage is magnesia quality,
(1) the magnesium chloride phosphoric acid soluble in water that adds is mixed into homogeneous solution,
(2) Surfactant CTAB is added in the solution obtained by step (1) and is sufficiently stirred,
(3) light calcined magnesia is added in the mixture obtained by step (2) and is sufficiently stirred to form oxychloride magnesium water
Slurry body, gained slurry is poured into 40mm × 40mm × 160mm stainless steel mould after conserving 1 day, be stripped and in atmosphere
Continue to conserve, the compression strength after conserving 7 days is 42Mpa, and detects containing for the magnesium chloride that in system dissociates in the process
Amount is obvious to be reduced, and free magnesium chloride mass content is 5.22% in system after conserving 7 days.
Embodiment 3
Light calcined magnesia powder is same as Example 1 used in the present embodiment,
Mol ratio according to activated magnesia, magnesium chloride, water is 6.5：1：20th, the dosage of water repellent agent phosphoric acid is magnesia
The 1% of amount, DTAB dosage is magnesia quality 1.5 ‰,
(1) the magnesium chloride phosphoric acid soluble in water that adds is mixed into homogeneous solution,
(2) surfactant D TAB is added in the solution obtained by step (1) and is sufficiently stirred,
(3) light calcined magnesia is added in the mixture obtained by step (2) and is sufficiently stirred to form oxychloride magnesium water
Slurry body, gained slurry is poured into 40mm × 40mm × 160mm stainless steel mould after conserving 1 day, be stripped and in atmosphere
Continue to conserve, the compression strength after conserving 7 days is 45Mpa, and detects containing for the magnesium chloride that in system dissociates in the process
Amount is obvious to be reduced, and free magnesium chloride mass content is 4.98% in system after conserving 7 days.
Comparative example 1
Prepared magnesium oxychloride cement is not added with CTAB, and remaining is same as Example 1.
Compression strength after conserving 7 days is 36Mpa, and magnesium chloride mass content of now dissociating in system is 4.73%, is compared
It is high in embodiment 1, low intensity, the content of magnesium chloride that dissociates.
Comparative example 2
Prepared magnesium oxychloride cement is not added with CTAB, and remaining is same as Example 2.
Compression strength after conserving 7 days is 30Mpa, and magnesium chloride mass content of now dissociating in system is 5.8%, compared to
Embodiment 2, low intensity, the content of magnesium chloride that dissociates are high.
Comparative example 3
Prepared magnesium oxychloride cement is not added with DTAB, and remaining is same as Example 3.
Compression strength after conserving 7 days is 30Mpa, and magnesium chloride mass content of now dissociating in system is 5.76%, is compared
It is high in embodiment 3, low intensity, the content of magnesium chloride that dissociates.
Comparative example 4
" CTAB " is replaced with into equimolar " sodium cetanesulfonate ", remaining is same as Example 1.
Compression strength after conserving 7 days is 32Mpa, and magnesium chloride mass content of now dissociating in system is 5.31%, is compared
It is high in embodiment 1, low intensity, the content of magnesium chloride that dissociates.
Comparative example 5
" CTAB " is replaced with etc. to " P123 " of quality, remaining is same as Example 1.
Compression strength after conserving 7 days is 34Mpa, and magnesium chloride mass content of now dissociating in system is 5.74%, is compared
It is high in embodiment 1, low intensity, the content of magnesium chloride that dissociates.
Claims (6)
- A kind of 1. preparation method of the high water than phosphorous magnesium oxychloride cement for being advantageous to improve early strength, it is characterised in that：Institute The preparation method stated is to add surfactant when preparing magnesium oxychloride cement slurry.
- 2. the preparation method of high water than phosphorous magnesium oxychloride cement as claimed in claim 1 for being advantageous to improve early strength, It is characterized in that：The preparation method concretely comprises the following steps,(1) phosphorous water repellent agent is added in magnesium chloride solution and is sufficiently stirred；(2) cationicsurfactants or DTAB are added in the mixture obtained by step (1) and are sufficiently stirred；(3) light calcined magnesia is added in the mixture obtained by step (2) and is sufficiently stirred to form magnesium oxychloride cement slurry Body, gained slurry is poured into mould after conserving, be stripped and continue to conserve.
- 3. the preparation method of high water than phosphorous magnesium oxychloride cement as claimed in claim 2 for being advantageous to improve early strength, It is characterized in that：In described light calcined magnesia, mass fraction >=50% of magnesia, the mass fraction of activated magnesia >= 50%.
- 4. the preparation method of high water than phosphorous magnesium oxychloride cement as claimed in claim 2 for being advantageous to improve early strength, It is characterized in that：Activated magnesia is 5 with the mol ratio of solute magnesium chloride and aqueous solvent in the magnesium chloride solution described in step (1) ~8：1：13~28.
- 5. the preparation method of high water than phosphorous magnesium oxychloride cement as claimed in claim 2 for being advantageous to improve early strength, It is characterized in that：Phosphorous water repellent agent is phosphoric acid, sodium dihydrogen phosphate or ammonium dihydrogen phosphate, and addition is magnesia gross mass 0.5%~1.5%.
- 6. the preparation method of high water than phosphorous magnesium oxychloride cement as claimed in claim 2 for being advantageous to improve early strength, It is characterized in that：Cationicsurfactants or DTAB addition are 0.5 ‰~the 2 ‰ of magnesia gross mass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924070.XA CN107601927B (en) | 2017-09-30 | 2017-09-30 | Preparation method of high water ratio phosphorus-containing magnesium oxychloride cement beneficial to improving early strength |
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| CN201710924070.XA CN107601927B (en) | 2017-09-30 | 2017-09-30 | Preparation method of high water ratio phosphorus-containing magnesium oxychloride cement beneficial to improving early strength |
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| CN107601927B CN107601927B (en) | 2019-12-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129044A (en) * | 2018-02-06 | 2018-06-08 | 河北科技大学 | A kind of method for improving magnesia oxychloride cement water resistance |
| CN111646490A (en) * | 2020-05-08 | 2020-09-11 | 中国科学院青海盐湖研究所 | Method for preparing active magnesium oxide from carbide slag and method for preparing magnesium cement |
| CN112794662A (en) * | 2021-01-14 | 2021-05-14 | 常州大学 | Preparation method of hydrophobic magnesium oxychloride cement with high strength and high softening coefficient |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104294A (en) * | 2007-07-26 | 2008-01-16 | 武汉工程大学 | Application of magnesia oxychloride cement |
| CN102134746A (en) * | 2011-02-28 | 2011-07-27 | 武汉理工大学 | Preparation method of alkali type magnesium chloride whisker |
| US20130263759A1 (en) * | 2012-04-05 | 2013-10-10 | Jerry Elliot Rademan | Method and compositions for improving performance properties of magnesium oxychloride cements |
| CN106517837A (en) * | 2016-10-17 | 2017-03-22 | 常州大学 | Phosphorus-containing magnesium oxychloride cement preparation method beneficial to improvement of early strength |
-
2017
- 2017-09-30 CN CN201710924070.XA patent/CN107601927B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104294A (en) * | 2007-07-26 | 2008-01-16 | 武汉工程大学 | Application of magnesia oxychloride cement |
| CN102134746A (en) * | 2011-02-28 | 2011-07-27 | 武汉理工大学 | Preparation method of alkali type magnesium chloride whisker |
| US20130263759A1 (en) * | 2012-04-05 | 2013-10-10 | Jerry Elliot Rademan | Method and compositions for improving performance properties of magnesium oxychloride cements |
| CN106517837A (en) * | 2016-10-17 | 2017-03-22 | 常州大学 | Phosphorus-containing magnesium oxychloride cement preparation method beneficial to improvement of early strength |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129044A (en) * | 2018-02-06 | 2018-06-08 | 河北科技大学 | A kind of method for improving magnesia oxychloride cement water resistance |
| CN111646490A (en) * | 2020-05-08 | 2020-09-11 | 中国科学院青海盐湖研究所 | Method for preparing active magnesium oxide from carbide slag and method for preparing magnesium cement |
| CN112794662A (en) * | 2021-01-14 | 2021-05-14 | 常州大学 | Preparation method of hydrophobic magnesium oxychloride cement with high strength and high softening coefficient |
| CN112794662B (en) * | 2021-01-14 | 2022-04-26 | 常州大学 | Preparation method of hydrophobic magnesium oxychloride cement with high strength and high softening coefficient |
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