CN102603217A - Alkali-activated carbonate composite cementing material and preparation method thereof - Google Patents
Alkali-activated carbonate composite cementing material and preparation method thereof Download PDFInfo
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- CN102603217A CN102603217A CN201110394108XA CN201110394108A CN102603217A CN 102603217 A CN102603217 A CN 102603217A CN 201110394108X A CN201110394108X A CN 201110394108XA CN 201110394108 A CN201110394108 A CN 201110394108A CN 102603217 A CN102603217 A CN 102603217A
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- sodium silicate
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention provides an alkali-activated carbonate composite cementing material and a preparation method thereof. Modified sodium silicate solution and solid powder material are weighed at the mass ratio of (0.6-1.0):1; in the preparation process, under the stirring of 60-120 turns/min, the solid powder material is slowly added into the modified sodium silicate solution to continuously stir for 3-5 minutes to obtain the alkali-activated composite cementing material, wherein the modified sodium silicate solution is prepared in the following steps: sodium hydroxide is dissolved in liquid sodium silicate, or sodium hydroxide and solid sodium silicate are dissolved in water together and the obtained product is continuously stirred until solution is transparent; the modulus of the obtained sodium silicate solution, i.e. the mass ratio of silica and sodium oxide is 1.2-2.0, and the mass concentration sum of the silica and the sodium oxide is 25-45%; the solid powder material is prepared from the following components in parts by weight: 15-30 parts of slag, 5-20 parts of coal ash, 10-30 parts of metakaolin and 20-70 parts of dolomite dust or limestone powder; and the above raw materials are successively arranged in a blender mixer and are stirred at normal pressure and temperature at 60-120 turns/ min for 5-15 minutes to obtain the finished product.
Description
Technical field
The present invention relates to the gelling material field, be meant that specifically a kind of alkali excites composite gelled material and preparation method thereof.
Background technology
It is the one type of gelling material that is formed by pozzolanic activity or latent hydraulicity raw material and alkali-activator reaction that alkali excites gelling material, and the scope of hydraulicity mineral rubber gel material has been expanded in its invention.The FSU has carried out big quantity research in this respect, has developed alkali slag cement.Discover, compare that alkali slag cement has advantages such as water requirement is little, hydration heat is low, intensity is high, good endurance, but also have fatal shortcomings such as rate of set is fast, the sclerosis drying shrinkage is big, limited it and applied on a large scale with general purpose portland cement.The seventies in 20th century, French Davidovits is a main raw material with the metakaolin, develops novel alkali and excited the metakaolin gelling material, and with its called after geopolymer (geopolymer).Discover that geopolymer has many performances more excellent than silicate cement, demonstrates good prospects for application at aspects such as building, chemical industry, waste treatment.Because the metakaolin price is higher, adopts various industrial residues partly or entirely to replace metakaolin in recent years and prepare alkali and excite composite gelled material to become the focus of domestic and international research.
Literature search discloses: 1. Yip etc. is 2008; 30 (10): 979-985; Deliver the article of " Carbonate mineral addition to metakaolin-based geopolymers " on " Cement & Concrete Composites " publication; Be illustrated in the calcite or the rhombspar of adding about 20% in the metakaolin base geological polymer, can improve its ultimate compression strength, but can cause the bigger contraction of examination body appearance in initial 90d; 2. Zhu Qiang etc. is 2011; 39 (4): 690-696; Deliver the article of " mechanical property and the microtexture that contain rhombspar micro mist fly ash base geopolymer " on " silicate journal " publication; Show the rhombspar powder that mixes 10-25% help to improve geopolymer early stage with later stage ultimate compression strength, rhombspar is participated in reaction in geopolymer, the Ca of stripping, Mg combine the micro aggregate effect of good interface combination between the calcium magnesium alumino metasilicate gel, rhombspar-gel-in-matrix of the densification of formation and rhombspar micro mist with the geopolymer gel; Promote geopolymer strength development and raising jointly, but do not studied time of coagulation and shrinkage; 3. the patent of Chinese CN 1699250A and CN 1699251A; Through slag being carried out pre-treatment, adopting retardant bariumchloride or nitrate of baryta; Solve the alkali-activated-carbonate/slag composite gelled material and mix the caused fast problem of coagulating because of scoriaceous; But disclosed method technology is relatively complicated, and the duration is longer, is unfavorable for the engineering site construction operation.
The present invention's design is through adjustment water glass solution parameter; The mass ratio of slag, flyash, metakaolin, rhombspar or Wingdale; Give full play to the synergistic effect of each component; Thereby the alkali that prepare that technology is simple, time of coagulation and intensity can be regulated as requested excites composite gelled material, not only can be used as general building materials and uses, and also can be used for the slip casting backfill, solidify Toxic waste etc. to special occasions.
Summary of the invention
The objective of the invention is to: the alkali that provide that a kind of technology is simple, time of coagulation and intensity can be regulated as requested excites composite gelled material.
The objective of the invention is to realize like this: a kind of alkali-activated-carbonate composite gelled material and preparation method thereof
, modified water glass solution and the solid powder mass ratio by 0.6-1.0:1 is taken by weighing; Through preparing: under 60-120 rev/min stirring, solid powder is slowly joined in the modified water glass solution, continue to stir 3-5 minute, get product;
The wherein preparation of modified water glass solution: dissolution of sodium hydroxide in liquid sodium silicate, or is dissolved in sodium hydroxide in the tap water with sodium silicate solid, continues stirring and dissolving, transparent up to solution; The modulus of gained water glass solution is a silicon-dioxide and the ratio of the amount of substance of sodium oxide is 1.2-2.0, and silicon-dioxide and sodium oxide mass concentration sum are 25-45%;
Wherein solid powder is prepared with weight part: be made up of 15-30 part slag, 5-20 part flyash, 10-30 part metakaolin, 20-70 part ground dolomite or limestone powder: above-mentioned raw materials is placed mixer successively; Under normal temperature, normal pressure; With 60-120 rev/min; Stirred 5-15 minute, and got product;
Said method, gained alkali excites composite gelled material to test through national standard, and its degree of mobilization is 180-260mm, and be 3h-34h time of coagulation, and 3d ultimate compression strength reaches 16.6MPa, and 28d ultimate compression strength reaches 40.0MPa.
The alkali that the inventive method operating procedure is simple, time of coagulation and intensity can be regulated as requested excites composite gelled material, not only can be used as general building materials and uses, and the use of also can be used for the slip casting backfill, solidifying special occasions such as Toxic waste shows technical progress.
Embodiment
The present invention combines embodiment to be further described.
Embodiment 1
Working method: with parts by weight get 20 parts in slag, 10 parts in flyash, 20 parts of metakaolins, 50 parts (the CaO massfraction is 30.73% to ground dolomite; The MgO massfraction is 21.31%); Place mixer successively; Under normal temperature, normal pressure, stirred 15 minutes the solid powder that obtains with 120 rev/mins speed; Under 90 rev/mins stirring velocity, slowly join 80 parts, modulus is 1.2, silicon-dioxide and sodium oxide massfraction sum are 40% modified water glass solution, continues to stir 5 minutes, and the alkali that obtains excites composite gelled material; Test through standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999 all is up to state standards
Embodiment 2
Working method: get 20 parts of slags, 15 parts of flyash, 30 parts of metakaolins, 35 parts of limestone powders (the CaO massfraction is 54.03%) with parts by weight; Place mixer successively; At normal temperatures and pressures, stirred 7 minutes with 100 rev/mins speed, then with the solid powder that obtains; Under 90 rev/mins stirring velocity, slowly join 70 parts of moduluses and be 1.4, silicon-dioxide and sodium oxide massfraction sum are 30% modified water glass solution, continue to stir 4 minutes, the alkali that obtains excites composite gelled material; Test through standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999 all is up to state standards.
Embodiment 3
Working method: with parts by weight get 25 parts of slags, 20 parts of flyash, 10 parts of metakaolins, (the CaO massfraction is 30.35% to 45 parts of ground dolomites; The MgO massfraction is 21.61%) place mixer successively; Under normal temperature, normal pressure; Stirred 10 minutes with 60-120 rev/min speed; Then with the solid powder that obtains join slowly under 100 rev/mins stirring velocity that 90 parts of moduluses are 1.8, silicon-dioxide and sodium oxide massfraction sum are 40% modified water glass solution, continue to stir 3 minutes, the alkali that obtains excites composite gelled material; Test through standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999 all is up to state standards.
The industrial metasilicate of above-mentioned experiment selected, the liquid of National standard GB/T 4209-2008-3, liquid-4 and three kinds of model water glass of solid-3;
The slag of selecting for use, the S95 level of National standard GB/T 18046-2008 or S105 level granulated blast-furnace slag;
The flyash of selecting for use, the I level of National standard GB/T 1596-2005 or II level flyash;
Described metakaolin is the amorphous state material of kaolin after 600-850 ℃ of calcining, meta particle diameter D
50Less than 4 μ m, specific surface area is greater than 10000cm
2G
-1, SiO
2Massfraction is 45-55%, Al
2O
3Massfraction is 35-45%, and pozzolanic activity is determined as the 1g metakaolin with the Chapelle method and absorbs greater than 1000mgCa (OH), is commercially available finished product.
Described ground dolomite or limestone powder meet the rhombspar of national ferrous metallurgy industry standard YB/T 5278-2007 and the magnesium limestone of YB/T 5279-2005, and grain diameter is less than 10 μ m, and specific surface area is greater than 8000cm
2G
-1
Claims (2)
1. plant alkali-activated-carbonate composite gelled material and preparation method thereof, it is characterized in that, modified water glass solution and the solid powder mass ratio by 0.6-1.0:1 is taken by weighing; Through preparing: under 60-120 rev/min stirring, solid powder is slowly joined in the modified water glass solution, continue to stir 3-5 minute, get product;
The wherein preparation of modified water glass solution: dissolution of sodium hydroxide in liquid sodium silicate, or is dissolved in sodium hydroxide in the tap water with sodium silicate solid, continues stirring and dissolving, transparent up to solution; The modulus of gained water glass solution is a silicon-dioxide and the ratio of the amount of substance of sodium oxide is 1.2-2.0, and silicon-dioxide and sodium oxide mass concentration sum are 25-45%;
Wherein solid powder is prepared with weight part: be made up of 15-30 part slag, 5-20 part flyash, 10-30 part metakaolin, 20-70 part ground dolomite or limestone powder: above-mentioned raw materials is placed mixer successively; Under normal temperature, normal pressure; With 60-120 rev/min; Stirred 5-15 minute, and got product.
2. method according to claim 1 is characterized in that gained alkali excites composite gelled material to test through national standard, and its degree of mobilization is 180-260mm, and be 3h-34h time of coagulation, and 3d ultimate compression strength reaches 16.6MPa, and 28d ultimate compression strength reaches 40.0MPa.
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CN102910882A (en) * | 2012-11-08 | 2013-02-06 | 沈阳建筑大学 | Fiber-reinforced alkali-activated cementing material and preparation method thereof |
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CN104386961A (en) * | 2014-10-27 | 2015-03-04 | 西安建筑科技大学 | Method for recovering potassium-hydroxide-excited fly ash concrete by using mineral slag chemical components as object |
CN104446040A (en) * | 2014-12-11 | 2015-03-25 | 湖南科技大学 | Preparation method of composite single-component alkali-activated cement cured at room temperature |
CN105481467A (en) * | 2015-11-19 | 2016-04-13 | 重庆千向建材有限公司 | Full-slag foam light soil and preparation method thereof |
CN106145798A (en) * | 2016-07-04 | 2016-11-23 | 河南理工大学 | A kind of alkali-activated slag dual-liquid slip-casting material and preparation method thereof |
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CN110183126A (en) * | 2019-06-06 | 2019-08-30 | 长沙紫宸科技开发有限公司 | A method of carbonate cementitious material is prepared by raw material of lime stone |
CN110408482A (en) * | 2019-08-06 | 2019-11-05 | 山东丽波日化股份有限公司 | A kind of clear line waste water treatment process of detergent production |
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CN111511699A (en) * | 2017-12-15 | 2020-08-07 | 美国天主教大学 | Control of setting time of geopolymer compositions containing high calcium reactive aluminosilicate materials |
CN111868002A (en) * | 2017-12-08 | 2020-10-30 | 埃克塞姆材料有限公司 | Granulated blast furnace slag powder-based binder, dry and wet formulations made therefrom and method of making same |
CN114455901A (en) * | 2022-01-28 | 2022-05-10 | 大唐同舟科技有限公司 | Alkali-activated fly ash-based pervious concrete and preparation method thereof |
CN115368035A (en) * | 2022-08-10 | 2022-11-22 | 内蒙古工业大学 | Based on Ca 2+ 、Na + Synergistic activated multi-element solid waste low-carbon cementing material special for pavement base and preparation method thereof |
CN115893886A (en) * | 2022-11-22 | 2023-04-04 | 河海大学 | Solid waste base-activated cementing material and preparation method thereof |
CN116102301A (en) * | 2023-02-07 | 2023-05-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Heat-insulating high-toughness carbonic acid tunnel slag geopolymer shotcrete and preparation method thereof |
CN116462484A (en) * | 2023-05-11 | 2023-07-21 | 桂林理工大学 | Slag-waste marble powder-based alkali-activated high-strength concrete and preparation method thereof |
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CN1699250A (en) * | 2005-04-29 | 2005-11-23 | 华南理工大学 | Retardation method for pretreated bundle of alkali-activated-carbonate/slag gel grouting material |
CN101016198A (en) * | 2007-01-31 | 2007-08-15 | 北京恒坤混凝土有限公司 | Ultra-fine carbonate rock powder concrete composite blending material and preparing method thereof |
CN101456708A (en) * | 2009-01-06 | 2009-06-17 | 中建商品混凝土有限公司 | High-strength and high performance lightweight aggregate and preparation method thereof |
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CN1699250A (en) * | 2005-04-29 | 2005-11-23 | 华南理工大学 | Retardation method for pretreated bundle of alkali-activated-carbonate/slag gel grouting material |
CN101016198A (en) * | 2007-01-31 | 2007-08-15 | 北京恒坤混凝土有限公司 | Ultra-fine carbonate rock powder concrete composite blending material and preparing method thereof |
CN101456708A (en) * | 2009-01-06 | 2009-06-17 | 中建商品混凝土有限公司 | High-strength and high performance lightweight aggregate and preparation method thereof |
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