CN102173709B - Property-adjustable gypsum-based grouting material - Google Patents
Property-adjustable gypsum-based grouting material Download PDFInfo
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- CN102173709B CN102173709B CN2011100377625A CN201110037762A CN102173709B CN 102173709 B CN102173709 B CN 102173709B CN 2011100377625 A CN2011100377625 A CN 2011100377625A CN 201110037762 A CN201110037762 A CN 201110037762A CN 102173709 B CN102173709 B CN 102173709B
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- gypsum
- grouting
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- grouting material
- gypsum base
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- 239000000463 material Substances 0.000 title claims abstract description 54
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 42
- 239000010440 gypsum Substances 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 239000012190 activator Substances 0.000 claims abstract description 5
- 239000004816 latex Substances 0.000 claims abstract description 3
- 229920000126 latex Polymers 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- GLVVKKSPKXTQRB-UHFFFAOYSA-N ethenyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC=C GLVVKKSPKXTQRB-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000003469 silicate cement Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 125000003275 alpha amino acid group Chemical group 0.000 claims 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 claims 1
- 239000011863 silicon-based powder Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 239000002893 slag Substances 0.000 abstract description 5
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000005345 coagulation Methods 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- -1 acryl Chemical group 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 229910001653 ettringite Inorganic materials 0.000 abstract 2
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 abstract 2
- 230000005284 excitation Effects 0.000 abstract 1
- 239000006260 foam Substances 0.000 abstract 1
- 230000002940 repellent Effects 0.000 abstract 1
- 239000005871 repellent Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 244000188472 Ilex paraguariensis Species 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003245 working effect Effects 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention provides a property-adjustable gypsum-based grouting material. The grouting material comprises the following components in percentage by weight: 35-45% of semi-hydrated gypsum, 10-15% of ore slag powder, 2-4% of alkali-activator, 35-45% of aggregate, 1.0-1.5% of latex powder, 0.10-0.15% of efficient water reducing agent, 0.01-0.04% of efficient retarder, 0.03-0.07% of anti-sedimentation agent, 0.3-0.6% of moisture repellent and 0.01-0.02% of air entraining agent. In the grouting material, the gypsum is used as a gelled material, and the ore slag powder is utilized, so that waterproof tobermorite C-S-H and ettringite AFT (acryl foam tape) are generated under the excitation of the alkali-activator; and then the waterproof tobermorite C-S-H and the ettringite AFT are filled in the gap of the gypsum supplementary with additives matched with the gypsum, so that the grouting material has the advantages of high strength, good water tolerance, large flowability, good plastic expansion, rapid and easily-controlled coagulation time and no shrinkage after coagulation and hardening, thereby being especially suitable for high-precise equipment installation, foundation bolt anchorage, equipment foundation secondary grouting and the like under a relative dry environment.
Description
Technical field
The present invention relates to a kind of grouting material, relating in particular to a kind of is the grouting material of gelling material with the gypsum, more specifically relates to a kind of adjustable gypsum base grouting of performance material that is used for high precision apparatus installation, foot bolt fastening or Equipment Foundations back-grouting.
Background technology
Grouting material be with strong material as aggregate, as wedding agent, it is formulated to be aided with materials such as upper flow regime, microdilatancy, anti-segregation with gelling material, it adds a certain amount of water at the construction field (site), can use after stirring.At present, the grouting material has been widely used in main equipment installation, ground Automatic Levelling, the leak stopping that intercepts water, nut anchoring or reinforcement engineering etc., and the grouting material that purposes is different need have different performances.For the installation rate of accelerating equipment, improve precision of equipment installation, prolong work-ing life of equipment, the anchoring of the back-grouting of Equipment Foundations and lower margin nut need be adopted that degree of mobilization is big, intensity is high and have the injection material of micro-expansibility.
Traditional grouting material all is to adopt cement as gelling material; But the Cement Production energy consumption is high, and the carbon discharge capacity is high, one ton of cement of every production; The direct discharging of carbonic acid gas in Wingdale high-temperature calcination process just reaches 0.51 ton; Discharge indirectly far above carbonic acid gas coal-fired in the manufacture of cement and that power consumption is produced, and adopt cement as gelling material, the slurry later stage shrinks serious.In order to prevent the contraction in cement later stage, generally adopt the method that adds swelling agent, but the amount of swelling agent is difficult to control, measure very fewly, be not enough to offset the shrinkage of cement, amount is too much, can cause late expansion excessive and material or equipment are damaged.With dihydrate gypsum production is that to have the semi-hydrated gypsum of gelling be directly not discharge carbonic acid gas; And discharging also is lower than manufacture of cement indirectly, then adopt the gypsum base building materials to replace the cement based building materials, thus reduce carbon emission; Be following a kind of inevitable trend; But gypsum belongs to air hardening cementitious materials, and water tolerance is relatively poor, and intensity can not continue to increase behind the setting and harden.One Chinese patent application 200810021725.3 discloses a kind of method for preparing the gypsum base self-leveling material with desulfurated plaster; This method is earlier desulfurated plaster to be calcined in calcining kiln, mixes mutually with the retardant of the water reducer that accounts for material gross weight 0.1-1%, 0.01-0.5%, the water-holding agent of 0.02-5%, the skimmer of 0.05-0.2%, the river sand of 25-45% and the packing material of 0-20% with the terra alba that accounts for after the material weight 50-78% calcination processing then; The gypsum base self-leveling material that adopts above-mentioned patented claim method to obtain, though degree of mobilization is good, intensity is lower, water tolerance is also relatively poor, and the plastic stage do not have vertical expansible effect, and be not suitable for grouting and use.
Summary of the invention
For solving the problem of above existence; The purpose of this invention is to provide a kind of performance adjustable, with the grouting material of gypsum as gelling material; This grouting material has better water tolerance, higher-strength and higher plastic expansion rate, is suitable for high precision apparatus installation under the relatively dry environment, foot bolt fastening or Equipment Foundations back-grouting.
For realizing above purpose, gypsum base that performance of the present invention is adjustable grouting material comprises following each component and weight proportion:
The preferred natural β-semi-hydrated gypsum of above-mentioned semi-hydrated gypsum or desulfurization β-semi-hydrated gypsum.
The S105 grade slag powder that the preferred activity index of above-mentioned slag powders is higher.
The preferred silicate cement of above-mentioned alkali-activator.
For the better degree of mobilization that increases the grouting material, preferred silica sand of above-mentioned aggregate or river sand, and adopt following particle diameter and grating:
30～50 orders, 75% weight ratio
70～140 orders, 25% weight ratio
For better grouting material and the cohesive force of base material and the water tolerance of grouting material of improving, above-mentioned latex powder preferably has silane-modified ethene and the vinylchlorid and the vinyl laurate terpolymer rubber powder (E/Vc/VL) of process of strong hydrophobic nature.
The preferred poly carboxylic acid ether of above-mentioned high efficiency water reducing agent water reducer.
Above-mentioned high-efficient retarder preferred amino acid calcium salt gypsum special retarder, this retardant volume is little, and the slow setting time is long, and it is very little that gypsum intensity is reduced amplitude.
In order to prevent the sedimentation of aggregate, improve the whole stability of grouting material, the preferred LV hydroxyethyl ether cellulose of above-mentioned antisettling agent.
The preferred gypsum special-purpose organic silicon of above-mentioned hydrophober powder.
The preferred aluminium powder of above-mentioned air.
Gypsum base grouting material of the present invention; Adopt gypsum as gelling material; Utilize slag powders under the exciting of alkali-activator, generate water-proof hydrated calcium silicate C-S-H and calcium alum AFT, C-S-H is filled in the space of gypsum; And be aided with the additive that matees with gypsum, making the grouting material have following excellent properties:
1, intensity is high: 1d ultimate compression strength is greater than 10MPa; The 28d folding strength is greater than 10MPa, and ultimate compression strength is greater than 30MPa.
2, water-tolerant: immersion softening system number average was greater than 0.7 in one day, seven days.
3, degree of mobilization is big: degree of mobilization is 300～380mm, and can regulate as required, does not need manual work to vibrate, just can the completely filled space, and can realize the gentle self-compacting of gravity flow.
4, plastic expansion is good: through adding air entrapment agent, making 1 day vertical rate of expansion of grouting material is 0.1～0.2%.
5, time of coagulation is fast and be prone to control: the presetting period is at 90-180min, and the amount that can regulate retardant as required makes time of coagulation less than 30min.
6, fragility is little: the backfin ratio is less than 3.
7, do not shrink: can not produce contraction behind the grouting material setting and harden.
Embodiment
Embodiment 1
2, preparation: by above-mentioned prescription each component is put into whisking appliance, the water of mix component gross weight 28% promptly gets required grouting material.
Embodiment 2
2, preparation: by above-mentioned prescription each component is put into whisking appliance, the water of mix component gross weight 31% promptly gets required grouting material.
Embodiment 3
2, preparation: by above-mentioned prescription each component is put into whisking appliance, the water of mix component gross weight 30% promptly gets required grouting material.
The grouting material that the foregoing description 1,2,3 is obtained carries out performance test, and the result who obtains is as shown in the table:
Can be found out that by last table it is big to mix the water yield, degree of mobilization is also big, descends to some extent but intensity is corresponding.
Claims (10)
1. the adjustable gypsum base grouting of performance is expected, comprises following each component and weight proportion:
2. gypsum base that performance according to claim 1 is adjustable grouting material, it is characterized in that: said semi-hydrated gypsum is natural β-semi-hydrated gypsum or desulfurization β-semi-hydrated gypsum.
3. gypsum base that performance according to claim 2 is adjustable grouting material, it is characterized in that: said alkali-activator is a silicate cement.
4. gypsum base that performance according to claim 3 is adjustable grouting material is characterized in that: preferred silica sand of said aggregate or river sand, and adopt following particle diameter and grating:
30～50 orders, 75% weight ratio
70～140 orders, 25% weight ratio.
5. gypsum base that performance according to claim 4 is adjustable grouting material is characterized in that: said latex powder is process silane-modified ethene and vinylchlorid and vinyl laurate terpolymer rubber powder.
6. according to claim 4 or the adjustable gypsum base grouting of 5 described performances material, it is characterized in that:
Said high efficiency water reducing agent is a poly carboxylic acid ether water reducer.
7. according to claim 4 or the adjustable gypsum base grouting of 5 described performances material, it is characterized in that:
Said high-efficient retarder is an amino-acid calcium gypsum special retarder.
8. according to claim 4 or the adjustable gypsum base grouting of 5 described performances material, it is characterized in that:
Said antisettling agent is the LV hydroxyethyl ether cellulose.
9. according to claim 4 or the adjustable gypsum base grouting of 5 described performances material, it is characterized in that:
Said hydrophober is gypsum special-purpose organic silicon powder.
10. according to claim 4 or the adjustable gypsum base grouting of 5 described performances material, it is characterized in that:
Said air entrapment agent is an aluminium powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100377625A CN102173709B (en) | 2011-02-11 | 2011-02-11 | Property-adjustable gypsum-based grouting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100377625A CN102173709B (en) | 2011-02-11 | 2011-02-11 | Property-adjustable gypsum-based grouting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102173709A CN102173709A (en) | 2011-09-07 |
| CN102173709B true CN102173709B (en) | 2012-11-14 |
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| CN2011100377625A Expired - Fee Related CN102173709B (en) | 2011-02-11 | 2011-02-11 | Property-adjustable gypsum-based grouting material |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102924023B (en) * | 2012-11-21 | 2014-08-20 | 广西云燕特种水泥建材有限公司 | Sulphoaluminate-base high-strength grouting concrete and preparation method thereof |
| CN104556925A (en) * | 2013-10-16 | 2015-04-29 | 同济大学 | Gypsum-based seal mortar for through-wall holes and preparation method of gypsum-based seal mortar |
| CN103553526B (en) * | 2013-10-16 | 2016-01-13 | 上海利物宝建筑科技有限公司 | Gypsum base door and window joint filling seal sand slurry and its preparation method and application |
| CN103496936B (en) * | 2013-10-16 | 2015-09-09 | 上海利物宝建筑科技有限公司 | Assembled architecture component splicing seams gypsum base sealing material and application thereof |
| CN103601462B (en) * | 2013-11-29 | 2015-08-05 | 国家电网公司 | A kind of non-cement mine tailing concrete grouting material for transmission tower foundation |
| CN104628349B (en) * | 2015-02-06 | 2016-09-14 | 武汉理工大学 | A kind of ardealite base upper flow regime grouting material |
| CN109133695A (en) * | 2018-10-12 | 2019-01-04 | 四川绵筑新材料有限公司 | A kind of phosphorus building gypsum plastering mortar waterproof admixture and its application method |
| CN109095867B (en) * | 2018-10-30 | 2020-11-10 | 广东龙湖科技股份有限公司 | Pourable water-resistant gypsum pouring material and preparation method thereof |
| CN110031360A (en) * | 2019-03-05 | 2019-07-19 | 广东龙湖科技股份有限公司 | A kind of detection of inorganic flow material homogeneity and representation method |
| CN110482901B (en) * | 2019-08-20 | 2021-11-09 | 中建西部建设建材科学研究院有限公司 | Retarding water reducer for phosphorus building gypsum and preparation method thereof |
| CN112694311B (en) * | 2021-03-02 | 2022-05-27 | 王柏泉 | Composition for self-compacting gypsum-based board, board and composite board comprising same |
| CN113735525B (en) * | 2021-09-24 | 2022-06-14 | 济南圣乔工程科技有限公司 | Underwater non-dispersible grouting material for pile foundation repair and preparation method thereof |
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| CN101054284A (en) * | 2007-05-25 | 2007-10-17 | 浙江大学 | Desulfurated gypsum self-leveling material and preparation method thereof |
| CN101337802A (en) * | 2008-08-15 | 2009-01-07 | 同济大学 | Large-doping-amount slag powder dry mixing mortar using desulphurization gypsum as excitant |
| CN101704657A (en) * | 2009-12-10 | 2010-05-12 | 浙江天达环保有限公司 | Self-levelling material using bauxite and desulfurization gypsum as base materials and preparation method thereof |
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| JP5442944B2 (en) * | 2007-09-05 | 2014-03-19 | 電気化学工業株式会社 | Injection material and injection method |
| JP2009132808A (en) * | 2007-11-30 | 2009-06-18 | Nittetsu Cement Co Ltd | Grouting material and regulation method of curing time |
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2011
- 2011-02-11 CN CN2011100377625A patent/CN102173709B/en not_active Expired - Fee Related
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| CN101337802A (en) * | 2008-08-15 | 2009-01-07 | 同济大学 | Large-doping-amount slag powder dry mixing mortar using desulphurization gypsum as excitant |
| CN101704657A (en) * | 2009-12-10 | 2010-05-12 | 浙江天达环保有限公司 | Self-levelling material using bauxite and desulfurization gypsum as base materials and preparation method thereof |
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| Title |
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| JP特开2009-132808A 2009.06.18 |
| JP特开2009-62444A 2009.03.26 |
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| Publication number | Publication date |
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| CN102173709A (en) | 2011-09-07 |
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