CN100400454C - Compound material for preparing cement and concrete - Google Patents
Compound material for preparing cement and concrete Download PDFInfo
- Publication number
- CN100400454C CN100400454C CNB2005100800309A CN200510080030A CN100400454C CN 100400454 C CN100400454 C CN 100400454C CN B2005100800309 A CNB2005100800309 A CN B2005100800309A CN 200510080030 A CN200510080030 A CN 200510080030A CN 100400454 C CN100400454 C CN 100400454C
- Authority
- CN
- China
- Prior art keywords
- cement
- concrete
- calcium fly
- content
- compound material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004568 cement Substances 0.000 title claims abstract description 53
- 239000004567 concrete Substances 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims description 42
- 150000001875 compounds Chemical class 0.000 title claims description 20
- 239000011575 calcium Substances 0.000 claims abstract description 52
- 239000010881 fly ash Substances 0.000 claims abstract description 52
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 14
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 14
- 239000004571 lime Substances 0.000 claims abstract description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 28
- 239000011505 plaster Substances 0.000 claims description 22
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 12
- 229960004418 trolamine Drugs 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 8
- 239000003245 coal Substances 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 229910052602 gypsum Inorganic materials 0.000 abstract description 2
- 239000010440 gypsum Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 31
- 239000000292 calcium oxide Substances 0.000 description 22
- 235000012255 calcium oxide Nutrition 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000004575 stone Substances 0.000 description 7
- 239000002956 ash Substances 0.000 description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000011507 gypsum plaster Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000002802 bituminous coal Substances 0.000 description 2
- 238000003837 high-temperature calcination Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003476 subbituminous coal Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The present invention discloses a composite material for preparing cement and concrete. High-calcium fly ash or/and medium-calcium fly ash and desulfurized gypsum are used as main components, and construction lime and triethanolmine used as secondary components are proportionally added to the main components; the main components, the secondary components and water are mixed, forcibly stirred, and put still at room temperature for 2 to 5 hours so as to make the powdery composite material for cement and concrete; when used for preparing cement or concrete, the composite material for cement and concrete enables the cement and the concrete to have high stability and high strength, reduces the preparation cost of the cement and the concrete, and meanwhile solves the problem of environmental pollution of waste materials generated from coal fueled stations.
Description
Affiliated technical field
The present invention relates to cement and concrete industry technical field, relate to a kind of be used to prepare cement and concrete compound material specifically.
Background technology
Current, the preparation method of general ordinary Portland cement is, by the raw material of forming after Wingdale, clay and the auxiliary material batching, through levigate and high-temperature calcination, be prepared into grog, levigate behind grog and flyash or the feed proportionings such as slag and plaster of paris stone, be prepared into cement at last again.Usually the blended material that is used for calling cement, and plaster of paris stone is called the retardant of cement with raw material blended flyash and slag.The preparation method of normal concrete then is, cement, sand, stone, flyash or raw materials such as ground slag powder and admixture are added the water batching after, through stirring, casting and maintenance, be prepared into concrete at last.Usually flyash and ground slag powder etc. is called concrete adulterant.
Because scoriaceous market supply quantity not sufficient and ground slag powder production cost are higher, flyash has become a kind of indispensable important source material in cement and the concrete industry production thereof, the source of flyash is, the fuel-burning power plant that with the coal is fuel sprays into the levigated coal dust in the boiler usually, combustibleconstituents in the coal dust burns immediately and produces high temperature, be the inorganic component of main component with the clay mineral in the coal dust, through high-temperature calcination, along with flue gas together enters in the electric precipitator, under the effect of high pressure static electricity, from flue gas, separate, form a kind of glass microballon and account for 70~90% pulverulent material, be referred to as flyash.SiO in the chemical ingredients of flyash
2And Al
2O
3Content is higher usually, and CaO content then changes big and has considerable influence for the performance variation of flyash along with coal is different.The common both at home and abroad at present difference according to CaO content is divided into three classes to flyash: the CaO content of the flyash that bituminous coal obtains is referred to as low calcium fly ash less than 10%; The CaO content of the flyash that burning subbituminous coal or brown coal obtain is referred to as high-calcium fly ass greater than 20%; The CaO content of the flyash that mixed firing bituminous coal and subbituminous coal or brown coal obtain is 10~20%, is referred to as middle calcium fly ash.In general, the CaO content along with flyash raises the f-CaO of the dead roasting in the flyash (free calcium oxide) content and CaSO
4(dehydrated gyp-) content is (generally with SO
3Content is represented) also can correspondingly raise, will seriously influence cement and concrete stability thereof.Thereby need make strict restriction, for example, European standard EN450 " Fly Ash for Concrete " regulation: the f-CaO content in the flyash should be not more than 1%, SO
3Content should be not more than 3%.In above three kinds of flyash, have low calcium fly ash only and meet this standard-required, thereby low at home and abroad calcium ash has been widely used as cement and concrete compound material.But low calcium fly ash only belongs to the pozzolanic activity material, high-calcium fly ass and middle calcium fly ash then belong to and very approach scoriaceously have potential gelation activity material, thus when high-calcium fly ass and middle calcium fly ash are used as cement and concrete compound material for the contribution of cement and concrete intensity thereof obviously greater than low calcium fly ash.But, the f-CaO content and the SO of high-calcium fly ass and middle calcium fly ash
3Content all surpasses the standard-required of above-mentioned relevant stability, so do not allow as cement and concrete compound material.Therefore, eliminate f-CaO and CaSO in high-calcium fly ass and the middle calcium fly ash effectively
4For the detrimentally affect of cement and concrete stability thereof, then become the guardian technique link that reasonably develops high-calcium fly ass and middle calcium fly ash resource.
In addition, domestic and international research shows, because Al in the chemical ingredients of flyash
2O
3Content is higher, if not only contain Ca (OH) in the system of place
2But also contain CaSO
42H
2O will increase the ability that flyash is participated in chemical reaction, generates more C-S-H gel, and makes it part conversion generation ettringite (3CaOAl
2O
33CaSO
432H
2O) crystal, thus help improving early strength before 28d of cement and concrete thereof, reduce concrete volumetric shrinkage and improve concrete degree of compactness.Yet, in present Cement industry is produced, the SO that the plaster of paris stone amount that adds in cement is equivalent to introduce
3Measure approximately 3%, promptly be equivalent to the CaSO that introduces
42H
2It is about 6.5% that O measures, and only is that the retardant as cement uses.When if actual needs mixes relatively large flyash in cement and concrete thereof, the CaSO that only introduces then by the plaster of paris stone in the cement
42H
2The O amount then obviously is insufficient, will be unfavorable for promoting flyash to participate in chemical reaction, and the ettringite that a part has been generated transforms the doctor negative sulplo-aluminate (3CaOAl of generation
2O
3CaSO
410H
2O), thus produce very adverse influence for cement and concrete intensity thereof.
Summary of the invention
The objective of the invention is to make full use of high-calcium fly ass and middle calcium fly ash and prepare compound material on cement and the coagulation, help improving cement and concrete stability and intensity, reduce cement and concrete preparation cost simultaneously.
In order to achieve the above object, the present invention is by the following technical solutions: a kind ofly be used to prepare cement and concrete compound material, be characterized in: with high-calcium fly ass or/and middle calcium fly ash and desulfurated plaster are main component, add building lime, trolamine submember and add water and mix back pressure stirring, in the insulation storehouse, left standstill 2-5 hour, make the cement and the concrete compound material of dry powder, wherein each material composition formula range is as follows, all by weight percentage:
High-calcium fly ass is or/and middle calcium fly ash 55-90%
Desulfurated plaster 10-35%
Building lime 0-10%
Trolamine 0-0.5%
Above the described high-calcium fly ass fineness that is should reach II level ash standard (the 0.045mm square hole sieve tails over and is not more than 20%), CaO content is 20-30% in its chemical ingredients, wherein f-CaO content is greater than 1%, SO
3Content is greater than 3%.
The fineness of calcium fly ash should reach II level ash standard (0.045 square hole sieve tails over and is not more than 20%) in recited above, and CaO content is 10~20% in its chemical ingredients, and wherein f-CaO content is greater than 1%, SO
3Content is less than 3%.
Above described desulfurated plaster be the pulverulent material of a kind of humidity of in sweetening process, producing of the flue gas of power plant burning coal, its fineness should reach II level ash standard (the 0.045mm square hole sieve tails over and is not more than 20%), CaSO
42H
2O content is not less than 85%, and free water content is not higher than 15%.
Building lime recited above is also referred to as calcium lime powder, is natural limestone through calcining and levigate and make pulverulent material, and its f-CaO content is not less than 70%, and MgO content is not higher than 5%.
The principle that the present invention prepares cement and concrete compound material is such, handle the industrial waste that produces owing to when desulfurated plaster is coal-fired station's combusting coal fines flue gas is carried out desulfurization, its fineness has reached II level ash standard (the 0.045mm square hole sieve tails over and is not more than 20%), its CaSO
42H
2O content generally is not less than 85%, and free water content generally is not higher than 15%, and therefore, desulfurated plaster is that a kind of plaster of paris stone that replaces in cement and concrete thereof is introduced CaSO
42H
2The very good industrial waste resource of O.Therefore, when preparing to mix relatively large flyash in cement and concrete thereof, for guaranteeing cement and concrete early strength thereof, the present invention adopts desulfurated plaster to introduce CaSO
42H
2O, but, if do not remove in the desulfurated plaster free water just it directly and cement clinker together add grinding machine and grind, then can reduce cement and concrete intensity, remove free water in the desulfurated plaster as the method that adopts oven dry in advance, not only energy consumption is higher, but also may make a part of material burning, is transformed into semi-hydrated gypsum (CaSO
41/2H
2O), will cause cement false set, so also be unallowed, when high-calcium fly ass or/and middle calcium fly ash, desulfurated plaster, unslaked lime and add water batching after, in mixer, force to stir, and after in the insulation feed bin, depositing 2~5 hours the free water in the desulfurated plaster and add water and will at first cause f-CaO hydration heat light-burned in the building lime, improve material temperature, thereby promote the f-CaO and the CaSO of the dead roasting in high-calcium fly ass or the middle calcium fly ash
4Finish hydration reaction, transform generation for the harmless Ca of stability (OH)
2And CaSO
42H
2O.F-CaO and CaSO in high-calcium fly ass or the middle calcium fly ash so both can have been eliminated effectively
4For the detrimentally affect of cement and concrete stability thereof, can automatically adsorb to fall the free water in the desulfurated plaster again, thereby reach the effect of killing two birds with one stone.F-CaO and CaSO in high-calcium fly ass or the middle calcium fly ash
4And the major part of the total water requirements of the f-CaO in the building lime when finishing hydration reaction satisfies by the free water amount that desulfurated plaster contains, and insufficient section then satisfies by adding water; Desulfurated plaster be the effect be the CaSO that induces one
42H
2O can increase the ability that flyash is participated in chemical reaction and generated ettringite, thereby improves cement and concrete intensity thereof.
Trolamine [N (CH
2CH
2OH)
3] be a kind of cationic surfactant, mixing it in the preparation process of cement and the compound material of concrete helps that material is uniformly dispersed and also helps being uniformly dispersed apace in the concrete mix that material makes afterwards, for guarantee that trolamine sneaks in the material equably in preparation process, require trolamine mixed in advance and add in the water and in the material whipping process, mix among the material.
Owing to adopted technique scheme and composition of raw materials, make cement and concrete compound material that the present invention prepares can help improving cement and concrete stability and intensity, also reduce cement and concrete preparation cost, also solved coal-fired power plant's waste material environmental pollution problems simultaneously.
Embodiment
Below by specific embodiment in detail this patent is described in detail:
Embodiment 1
With middle calcium fly ash, desulfurated plaster, building lime, trolamine and water by following material fiting ratio (weight percent) batching, force to stir after, in finished bin, deposited 2~5 hours, be prepared into the compound material of cement:
Middle calcium fly ash 70%
Desulfurated plaster 25%
Building lime 4.7%
Trolamine 0.3%
Embodiment 2
Method is same as embodiment 1, and middle calcium fly ash is changed to high-calcium fly ass:
High-calcium fly ass 70%
Desulfurated plaster 29.8%
Trolamine 0.2%
Embodiment 3
Method is same as embodiment 1
The material fiting ratio (weight percent) of the compound material of preparation concrete:
Middle calcium fly ash 75%
Desulfurated plaster 15%
Building lime 9.8%
Trolamine 0.2%
Embodiment 4
Method is same as embodiment 1
High-calcium fly ass 35%
Middle calcium fly ash 40%
Desulfurated plaster 15%
Building lime 9.8%
Trolamine 0.2%
Desulfurated plaster is to adopt butt to prepare burden in above embodiment, adds water and adds in the ratio of actual demand.
Claims (5)
1. one kind is used to prepare cement and concrete compound material, it is characterized in that: with high-calcium fly ass or/and middle calcium fly ash and desulfurated plaster are main component, add building lime, trolamine submember and add water and mix back pressure stirring, in the insulation storehouse, left standstill 2-5 hour, make the cement and the concrete compound material of dry powder, wherein each material composition formula range is as follows, all by weight percentage:
High-calcium fly ass is or/and middle calcium fly ash 55-90%
Desulfurated plaster 10-35%
Building lime 0-10%
Trolamine 0-0.5%
Above-mentioned each material composition sum is 100%.
2. according to claim 1ly be used to prepare cement and concrete compound material, it is characterized in that: the fineness of described high-calcium fly ass is not more than 20% for the 0.045mm square hole sieve tails over, CaO content in its chemical ingredients is 20~30%, and wherein f-CaO content is greater than 1%, SO
3Content is greater than 3%.
3. according to claim 1ly be used to prepare cement and concrete compound material, it is characterized in that: the fineness of calcium fly ash is not more than 20% for the 0.045mm square hole sieve tails in described, CaO content is 10~20% in its chemical ingredients, and wherein f-CaO content is greater than 1%, SO
3Content is less than 3%.
4. a kind of be used to prepare cement and concrete compound material according to claim 1, it is characterized in that: described desulfurated plaster is a pulverulent material, its fineness should be the 0.045mm square hole sieve and tails over and be not more than 20%, wherein CaSO
42H
2O content is not less than 85%, and free water content is not higher than 15%.
5. a kind of be used to prepare cement and concrete compound material according to claim 1, it is characterized in that: described building lime, be Wingdale through calcining and levigate and make pulverulent material, wherein f-CaO content is not less than 70%, and MgO content is not higher than 5%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNB2005100800309A CN100400454C (en) | 2005-06-28 | 2005-06-28 | Compound material for preparing cement and concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2005100800309A CN100400454C (en) | 2005-06-28 | 2005-06-28 | Compound material for preparing cement and concrete |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1699246A CN1699246A (en) | 2005-11-23 |
CN100400454C true CN100400454C (en) | 2008-07-09 |
Family
ID=35475531
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CNB2005100800309A Expired - Fee Related CN100400454C (en) | 2005-06-28 | 2005-06-28 | Compound material for preparing cement and concrete |
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CN (1) | CN100400454C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101508535B (en) * | 2009-03-20 | 2011-08-10 | 广东水电二局股份有限公司 | Concrete external doped composite material and method of producing the same |
CN102452814A (en) * | 2010-10-19 | 2012-05-16 | 上海城建物资有限公司 | High strength concrete adopting desulfurized gypsum as activator, and preparation method thereof |
CN108585735B (en) * | 2018-05-18 | 2021-03-05 | 郑州市建文特材科技有限公司 | Plugging agent and preparation method thereof |
CN109592920B (en) * | 2018-11-05 | 2021-06-18 | 山东新大地环保建材有限公司 | Filling material based on thermal power plant waste, preparation device and method and application thereof |
CN115504729A (en) * | 2021-06-22 | 2022-12-23 | 国家能源投资集团有限责任公司 | Cementing material composition, cementing material, preparation method and application thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HUP9701462A2 (en) * | 1996-09-04 | 2002-12-28 | Wopfinger Stein- Und Kalkwerke Schmid & Co. | Method for producing of construction material and aparatous for making thereof |
CN1562851A (en) * | 2004-03-16 | 2005-01-12 | 徐尔昌 | Earth cementation agent in use for roadway construction |
-
2005
- 2005-06-28 CN CNB2005100800309A patent/CN100400454C/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HUP9701462A2 (en) * | 1996-09-04 | 2002-12-28 | Wopfinger Stein- Und Kalkwerke Schmid & Co. | Method for producing of construction material and aparatous for making thereof |
CN1562851A (en) * | 2004-03-16 | 2005-01-12 | 徐尔昌 | Earth cementation agent in use for roadway construction |
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