CN107098612A - A kind of magnesium system oxalic acid salt cement - Google Patents
A kind of magnesium system oxalic acid salt cement Download PDFInfo
- Publication number
- CN107098612A CN107098612A CN201710255367.1A CN201710255367A CN107098612A CN 107098612 A CN107098612 A CN 107098612A CN 201710255367 A CN201710255367 A CN 201710255367A CN 107098612 A CN107098612 A CN 107098612A
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- CN
- China
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- parts
- oxalic acid
- magnesia
- magnesium system
- acid salt
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- Granted
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- 239000004568 cement Substances 0.000 title claims abstract description 35
- 239000011777 magnesium Substances 0.000 title claims abstract description 33
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 33
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 22
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical class OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 35
- 230000002378 acidificating effect Effects 0.000 claims abstract description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 20
- 239000004327 boric acid Substances 0.000 claims description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 10
- ZDYUUBIMAGBMPY-UHFFFAOYSA-N oxalic acid;hydrate Chemical class O.OC(=O)C(O)=O ZDYUUBIMAGBMPY-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 229910021538 borax Inorganic materials 0.000 claims description 4
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 4
- 229940039790 sodium oxalate Drugs 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 244000248349 Citrus limon Species 0.000 claims 1
- 235000005979 Citrus limon Nutrition 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 235000010338 boric acid Nutrition 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 235000006408 oxalic acid Nutrition 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000011230 binding agent Substances 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000009270 solid waste treatment Methods 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 150000003891 oxalate salts Chemical class 0.000 description 14
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 150000002680 magnesium Chemical class 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 11
- JMTCDHVHZSGGJA-UHFFFAOYSA-M potassium hydrogenoxalate Chemical compound [K+].OC(=O)C([O-])=O JMTCDHVHZSGGJA-UHFFFAOYSA-M 0.000 description 10
- 239000001509 sodium citrate Substances 0.000 description 8
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical group [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 6
- 239000004137 magnesium phosphate Substances 0.000 description 6
- 229960002261 magnesium phosphate Drugs 0.000 description 6
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 6
- 235000010994 magnesium phosphates Nutrition 0.000 description 6
- 230000036632 reaction speed Effects 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- UHNWOJJPXCYKCG-UHFFFAOYSA-L magnesium oxalate Chemical compound [Mg+2].[O-]C(=O)C([O-])=O UHNWOJJPXCYKCG-UHFFFAOYSA-L 0.000 description 3
- 229940039748 oxalate Drugs 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OLZDXDPSDUSGIS-UHFFFAOYSA-N sulfinylmagnesium Chemical compound [Mg].S=O OLZDXDPSDUSGIS-UHFFFAOYSA-N 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 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
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- NEBJCWKHSDHPTA-UHFFFAOYSA-N [Mg].O.O.C(C(=O)O)(=O)O Chemical compound [Mg].O.O.C(C(=O)O)(=O)O NEBJCWKHSDHPTA-UHFFFAOYSA-N 0.000 description 1
- JWEWPDCILIRASR-UHFFFAOYSA-N [Mg].[O].[Cl] Chemical compound [Mg].[O].[Cl] JWEWPDCILIRASR-UHFFFAOYSA-N 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- MXZRMHIULZDAKC-UHFFFAOYSA-L ammonium magnesium phosphate Chemical compound [NH4+].[Mg+2].[O-]P([O-])([O-])=O MXZRMHIULZDAKC-UHFFFAOYSA-L 0.000 description 1
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- -1 phosphoric acid hydrogen amine Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C04B9/00—Magnesium cements or similar cements
-
- 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
- C04B9/00—Magnesium cements or similar cements
- C04B9/02—Magnesium cements containing chlorides, e.g. Sorel cement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a kind of new magnesium system oxalic acid salt cement and preparation method thereof, belong to building material technical field；The binder materials by following weight parts raw material it is well mixed after be made：100 parts of acidic components, 60 150 parts of magnesia adjusts 7 30 parts of gel material, 30 75 parts of water is in parts by weight；The present invention has：Rate of set is controllable, setting time 6min 240min, and hardening is fast, and intensity is high, and cohesive force is strong, and volume stability is good, the advantages of wearability, frost resistance are good；Preparation process of the present invention is simple to operate, can workability it is good, can apply highway, airfield runway, bridge, major trunk roads Rapid-Repair, in Solid Waste Treatment with also having broad application prospects in terms of solidifying.
Description
Technical field
The present invention relates to a kind of magnesium system oxalic acid salt cement, belong to building material technical field.
Background technology
Magnesium system soda acid cement, is that a kind of formed by magnesia and acid or acid salt progress acid-base reaction has bonding with one kind
The inorganic coagulation material of performance.The more maturation of research at present is magnesium phosphate cement.Also referred to as magnesium phosphate chemically bonded ceramics are gelled
Material.Magnesium phosphate be chemically bonded material by the acid phosphate in raw material and magnesia occur chemical reaction form guanite and
Produce the binder materials of intensity.Magnesium phosphate cement has than conventional cement better performance at many aspects, for example：It is fast solidifying fast
Firmly, early strength is high, and cryogenic temperature condensation speed is fast, and the adhesive strength with old concrete is high；Wearability and frost resistance are good, and drying shrinkage is small.
Magnesium phosphate cement has unique performance, highway, airfield runway, major trunk roads Rapid-Repair, Solid Waste Treatment with
Had broad application prospects in terms of solidification.
But magnesium phosphate cement is swift in response at high temperature, too fast, again not rapid enough under extremely low temperature, difficulty of construction is hardened
Higher, magnesia can release the ammonia with penetrating odor with the reaction of phosphoric acid hydrogen amine, limit it extensive at many aspects
Application.Meanwhile, as magnesia oxychloride cement and magnesium oxysulfide concrete industry can be released with penetrating odor gas during the course of the reaction, make
Into secondary pollution.
The content of the invention
The present invention is intended to provide a kind of magnesium system oxalic acid salt cement, its constituent and parts by weight are：100 parts of acidic components, oxygen
Change 60-150 parts of magnesium, adjust 7-30 parts of gel material.
The water of 30-75 parts of addition when using.
Magnesium system oxalic acid salt cement is by magnesia and the acidic components rich in oxalate react and form a kind of binder materials.It is right
The activity of magnesia is not only reduced by high temperature dead burned magnesia in raw material, reaction speed is reduced；Also pass through binoxalate, grass
The compounding of acid and oxalates changes pH value to change acidity, changes reaction speed；Add various dose, the adjustable solidification agent of different ratio
Change reaction speed；Realize the adjustability of reaction speed.The gas with penetrating odor will not be released during simultaneous reactions,
It is more environmentally friendly to environment, so largely widen the application prospect of this material.
Then magnesia of the present invention cross 80 mesh sieves, screen over-size is small by high temperature 900 DEG C of -1500 DEG C of sintering, grindings
In 5%.
Acidic components of the present invention are two oxalic acid hydrates, potassium binoxalate, one kind of sodium oxalate or any than several.
It is of the present invention to adjust gel material to be one kind or any than several in borax, boric acid, citric acid, sodium chloride.
The use step of above-mentioned magnesium system oxalic acid salt cement is：
Weigh the raw material of following parts by weight：100 parts of acidic components, 60-150 parts of magnesia, 7-30 parts of gel material of tune, water 30-75
Part；Raw material is mixed, slurry is prepared into.The slurry of gained is poured into rapidly in six gang moulds tool, and vibrated on a vibration table
Shaping, upper surface is struck off, and is conserved in natural environment, and magnesium oxalate chemical bonding material solidification body is made；5 after firming body shaping
Hour demoulding, conserves certain age using natural curing mode and can be used.
The present invention can improve the micro- of magnesium system oxalates binder materials in its setting time of 6min-240min flexible modulations
Architectural characteristic is seen, its strength and stability is greatly improved.This material can be applied in highway, airfield runway, bridge, trunk
The Rapid-Repair in road, also has broad application prospects in terms of Solid Waste Treatment with solidification.
Advantage and beneficial effect of the present invention：
（1）Magnesium system oxalic acid salt cement application method of the present invention is similar with cement-based material, and scene need to only add water, and grasps
Make simple；Acid-base neutralization reaction generation magnesium oxalate difficulty soluble salt occurs for simultaneous oxidation magnesium and two oxalic acid hydrates or its esters, and be gelled material
Material is linked together by way of chemical bonding, binder materials is had certain intensity；
（2）The preparation of magnesium system oxalic acid salt cement of the present invention, binoxalate and two oxalic acid hydrates and oxalates are answered
With regulation pH so as to reaction speed, adjust the setting time of binder materials；Setting time extends, difficulty of construction drop
Low, binder materials of the invention is more widely used；
（3）Magnesium system oxalic acid salt cement of the present invention releases ammonia, chlorine oxygen magnesium water compared with ammonium magnesium phosphate cement during the course of the reaction
Mud releases chlorine, and magnesium oxysulfide concrete is released sulfur dioxide gas and compared, and the material will not release the gas with penetrating odor,
Environmental protection, does not result in secondary environmental pollution；
（4）Magnesium system oxalic acid salt cement of the present invention not only possesses magnesium system phosphate concrete intensity height, and cohesive force is strong, body
Product stability is good, and the material is with can rapid condensation, intensity under extremely low temperature with traditional inorganic ceramic binder materials compared with
It is higher, the advantages of compatibility between old concrete is good, wearability is good, frost resistance is good；And it is adjustable to realize reaction speed.
Brief description of the drawings
Fig. 1 is the magnesium system oxalate chemical bonding material SEM of embodiment 3 figures；
Fig. 2 is the magnesium system oxalate chemical bonding material XRD of embodiment 3.
Embodiment
The present invention is described in further detail below in conjunction with drawings and examples, but the scope of the present invention is not limited to
The content.
Embodiment 1：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 1500 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying
Material is boric acid 5g, sodium chloride 5g, sodium citrate 2g, uses water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 15min, after 5 hours the demoulding and in atmosphere natural curing to certain
Age, test its mechanical property：1d, 3d, 7d compression strength are respectively 32.52Mpa, 33.33Mp, 33.87Mpa.
Embodiment 2：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 900 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying
Material is boric acid 5g, sodium chloride 5g, sodium citrate 2g, uses water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 13min, and natural curing is to one after being stripped after 5 hours and in atmosphere
Fixed age, test its mechanical property：1d, 3d, 7d compression strength are respectively 32.15Mpa, 32.96Mp, 33.02Mpa.
Embodiment 3：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 130g, tune gel material 13g
Part；Wherein acidic components are two oxalic acid hydrates；Tune gel material is borax 10g, sodium chloride 3g, uses water 55g；
Above-mentioned raw materials are mixed evenly, Quick pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 6min, after 5 hours the demoulding and in atmosphere natural curing to certain
Age, test its mechanical property：1d, 3d, 7d compression strength are respectively 31.52Mpa, 32.06Mp, 32.98Mpa.
SEM morphology analysis is carried out to the material, Fig. 1 is as a result seen, firming body combines more close, phase as we can see from the figure
Link to form the binder materials with some strength each other between neighbour.There is part needle bar shape unreacted in firming body
Magnesia.XRD analysis are carried out to the material, Fig. 2 is as a result seen, it can be seen that reaction has been mainly generated with certain compression strength
Oxalic acid dihydrate magnesium, magnesium oxalate, while also unreacted magnesia.
Embodiment 4：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are potassium binoxalate；Magnesia is the chemically pure reagent of unprocessed mistake, and it is boric acid 5g, chlorine to adjust gel material
Change sodium 5g, sodium citrate 2g, use water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 12min, and natural curing is to one after being stripped after 5 hours and in atmosphere
Fixed age, test its mechanical property：1d, 3d, 7d compression strength are respectively 31.15Mpa, 32.08Mp, 32.63Mpa.
Embodiment 5：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 60g, 7g parts of gel material of tune；
Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 1500 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying material
Expect for boric acid 3g, sodium chloride 3g, sodium citrate 1g, to use water 30g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 13min, after 5 hours the demoulding and in atmosphere natural curing to certain
Age, test its mechanical property：1d, 3d, 7d compression strength are respectively 24.75Mpa, 25.47Mpa, 25.58Mpa.
Embodiment 6：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 150g, tune gel material 18g
Part；Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 1500 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying
Material is boric acid 7.5g, sodium chloride 7.5g, sodium citrate 3g, uses water 50g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 11min, and natural curing is to one after being stripped after 5 hours and in atmosphere
Fixed age, test its mechanical property：1d, 3d, 7d compression strength are respectively 25.75Mpa, 27.47Mpa, 27.89Mpa.
Embodiment 7：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are potassium binoxalate 50g, two oxalic acid hydrate 50g；Magnesia crosses 80 mesh sieves, sieve after 1500 DEG C sinter
Surplus is not more than 5%；Tune gel material is boric acid 5g, sodium chloride 5g, sodium citrate 2g, uses water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 10min, and natural curing is to one after being stripped after 5 hours and in atmosphere
Fixed age, test its mechanical property：1d, 3d, 7d compression strength are respectively 29.52Mpa, 30.35Mp, 31.59Mpa.
Embodiment 8：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are potassium binoxalate 50g, sodium oxalate 50g；Magnesia crosses 80 mesh sieves, screen over-size after 1500 DEG C sinter
No more than 5%；Tune gel material is boric acid 5g, sodium chloride 5g, sodium citrate 2g, uses water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 240min, and natural curing is extremely after being stripped after 5 hours and in atmosphere
Certain age, test its mechanical property：1d, 3d, 7d compression strength are respectively 20.75Mpa, 22.47Mpa, 22.89Mpa.
Embodiment 9：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 100g, tune gel material 12g
Part；Wherein acidic components are sodium oxalate 50g, two oxalic acid hydrate 50g；Magnesia is crossed 80 mesh sieves, tailed over after 1500 DEG C sinter
Amount is not more than 5%；Tune gel material is boric acid 5g, sodium chloride 5g, sodium citrate 2g, uses water 40g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 150min, and natural curing is extremely after being stripped after 5 hours and in atmosphere
Certain age, test its mechanical property：1d, 3d, 7d compression strength are respectively 22.45pa, 23.33Mp, 24.52Mpa.
Embodiment 10：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 150g, tune gel material 30g
Part；Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 1500 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying
Material is borax；Use water 50g
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 35min, after 5 hours the demoulding and in atmosphere natural curing to certain
Age, test its mechanical property：1d, 3d, 7d compression strength are respectively 24.57Mpa, 25.12Mpa, 25.54Mpa.
Embodiment 11：This magnesium system oxalates cement composition thing is：Acidic components 100g, magnesia 150g, tune gel material 30g
Part；Wherein acidic components are potassium binoxalate；Magnesia crosses 80 mesh sieves after 1500 DEG C sinter, and screen over-size is not more than 5%；Adjust solidifying
Material is boric acid；Use water 75g；
Above-mentioned raw materials are mixed evenly, fast pouring enters in 20mm*20mm*20mm six multi pack moulds, on a vibration table
Vibration moulding, top is struck off, and determines its setting time for 45min, after 5 hours the demoulding and in atmosphere natural curing to certain
Age, test its mechanical property：1d, 3d, 7d compression strength are respectively 22.45Mpa, 23.79Mpa, 23.68Mpa.
The part more preferably scheme of example discussed above, the simply present invention, those skilled in the art are in the technology of the present invention
The variations and alternatives carried out in aspects all should be comprising within the scope of the present invention.
Claims (4)
1. a kind of magnesium system oxalic acid salt cement, it is characterised in that constituent and parts by weight are：100 parts of acidic components, magnesia 60-
150 parts, 7-30 parts of gel material of tune.
2. magnesium system oxalic acid salt cement according to claim 1, it is characterised in that:Magnesia passes through 900 DEG C -1500 DEG C of high temperature
Sintering, grinding, then cross 80 mesh sieves, and screen over-size is less than 5%.
3. magnesium system oxalic acid salt cement according to claim 1, it is characterised in that：Acidic components are two oxalic acid hydrates, oxalic acid
Hydrogen potassium, one kind of sodium oxalate or any than several.
4. magnesium system oxalic acid salt cement according to claim 1, it is characterised in that：Tune gel material is borax, boric acid, lemon
Acid, one kind in sodium chloride or any than several.
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| CN113713753A (en) * | 2021-09-06 | 2021-11-30 | 昆明理工大学 | Preparation method and application of magnesium oxalate microspheres |
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