CN102603217B - 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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- CN102603217B CN102603217B CN201110394108.XA CN201110394108A CN102603217B CN 102603217 B CN102603217 B CN 102603217B CN 201110394108 A CN201110394108 A CN 201110394108A CN 102603217 B CN102603217 B CN 102603217B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 gelling material field, specifically refer to that a kind of alkali excites composite gelled material and preparation method thereof.
Background technology
Alkali excited cementing material is to react by pozzolanic activity or latent hydraulicity raw material the class gelling material forming with alkali-activator, and the scope of hydraulicity mineral rubber gel material has been expanded in its invention.USSR (Union of Soviet Socialist Republics) has been carried out large quantity research in this respect, has developed alkali slag cement.Research discovery, compared with general purpose portland cement, alkali slag cement has the advantages such as water requirement is little, hydration heat is low, intensity is high, good endurance, but also has the fatal shortcomings such as rate of set is fast, sclerosis drying shrinkage is large, has limited it and has applied on a large scale.20 century 70s, French Davidovits, take metakaolin as main raw material, has developed Novel alkali and has excited metakaolin gelling material, and by its called after geopolymer (geopolymer).Research discovery, geopolymer has many than the performance of silicate cement excellence, demonstrates good application prospect at aspects such as building, chemical industry, refuse processing.Because metakaolin price is higher, adopt in recent years various industrial residues partly or entirely to replace metakaolin 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, on " Cement & Concrete Composites " publication, deliver the article of " Carbonate mineral addition to metakaolin-based geopolymers ", show to add calcite or the rhombspar of 20% left and right in metakaolin base geological polymer, can improve its ultimate compression strength, occur larger contraction but can cause trying body in initial 90d, 2. Zhu Qiang etc. is 2011, 39 (4): 690-696, on " silicate journal " publication, deliver the article of " containing mechanical property and the microtexture of dolomite fly ash base geopolymer ", show that the rhombspar powder that mixes 10-25% contributes to improve geopolymer in early days and later stage ultimate compression strength, rhombspar participates in reaction in geopolymer, the Ca of stripping, Mg be combined with geopolymer gel form fine and close calcium magnesium alumino metasilicate gel, between rhombspar-gel-in-matrix good interface in conjunction with and the micro aggregate effect of dolomite, geopolymer strength development and raising are jointly promoted, but do not study time of coagulation and shrinkage, 3. the patent of Chinese CN 1699250A and CN 1699251A, by slag being carried out to pre-treatment, adopting retardant bariumchloride or nitrate of baryta, solve alkali-activated-carbonate/slag composite gelled material because of the caused fast solidifying problem of mixing of slag, but disclosed method technique is relatively complicated, duration is longer, is unfavorable for engineering site construction operation.
The present invention's design is by adjusting 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 technique is simple, time of coagulation and intensity can regulate as requested excites composite gelled material, not only can be used as general building materials and use, also can be used for slip casting backfill, curing Toxic waste etc. to special occasions.
Summary of the invention
The object of the invention is to: the alkali that provide that a kind of technique is simple, time of coagulation and intensity can regulate as requested excites composite gelled material.
The object of the present invention is achieved like this: a kind of alkali-activated-carbonate composite gelled material and preparation method thereof
, modified water glass solution and solid powder are taken by the mass ratio of 0.6-1.0:1; Through preparing: under the stirring of 60-120 rev/min, solid powder is slowly joined in 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 tap water together with sodium silicate solid, continues stirring and dissolving, until solution is transparent; The modulus of gained water glass solution is that silicon-dioxide is 1.2-2.0 with the ratio of the amount of substance of sodium oxide, 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 in to mixer successively, under normal temperature, normal pressure, with 60-120 rev/min, stir 5-15 minute, get product;
Described 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 regulate 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 slip casting backfill, solidifying the special occasions such as Toxic waste, shows technical progress.
Embodiment
The present invention is further described in conjunction with the embodiments.
Embodiment 1
Working method: (CaO massfraction is as 30.73% to get 50 parts, 20 parts, slag, 10 parts, flyash, 20 parts of metakaolins, ground dolomite take parts by weight, MgO massfraction is 21.31%), be placed in successively mixer, under normal temperature, normal pressure, stir 15 minutes the solid powder obtaining with the speed of 120 revs/min; Under the stirring velocity of 90 revs/min, slowly join 80 parts, the modified water glass solution that modulus is 1.2, silicon-dioxide and sodium oxide massfraction sum are 40%, continues to stir 5 minutes, and the alkali obtaining excites composite gelled material; Through the test of standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999, be all 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 (CaO massfraction is as 54.03%) take parts by weight, be placed in successively mixer, at normal temperatures and pressures, stir 7 minutes with the speed of 100 revs/min, then by the solid powder obtaining; The modified water glass solution that slowly join 70 parts of moduluses and be 1.4 under the stirring velocity of 90 revs/min, silicon-dioxide and sodium oxide massfraction sum is 30%, continues to stir 4 minutes, and the alkali obtaining excites composite gelled material; Through the test of standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999, be all up to state standards.
Embodiment 3
Working method: take parts by weight get 25 parts of slags, 20 parts of flyash, 10 parts of metakaolins, (CaO massfraction is as 30.35% for 45 parts of ground dolomites, MgO massfraction is 21.61%) be placed in successively mixer, under normal temperature, normal pressure, stir 10 minutes with the speed of 60-120 rev/min, then the modified water glass solution that the solid powder obtaining is slowly joined under the stirring velocity of 100 revs/min to 90 parts of moduluses and be 1.8, silicon-dioxide and sodium oxide massfraction sum is 40%, continue to stir 3 minutes, the alkali obtaining excites composite gelled material; Through the test of standard GB/T 8077-2000, GB/T 1346-2001 and GB/T 17671-1999, be all up to state standards.
The industrial metasilicate that above-mentioned test is selected, meets liquid-3, liquid-4 of standard GB/T/T 4209-2008 and consolidates three kinds of model water glass of-3;
The slag of selecting, meets S95 level or the S105 level granulated blast-furnace slag of standard GB/T/T 18046-2008;
The flyash of selecting, meets I level or the II level flyash of standard GB/T/T 1596-2005;
Described metakaolin, is the amorphous state material of kaolin after 600-850 ℃ of calcining, meta particle diameter D
50be less 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 absorption of 1g metakaolin by Chapelle method and is 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 (1)
1.
a kind of alkali-activated-carbonate composite gelled material,it is characterized in that: modified water glass solution and solid powder are taken by the mass ratio of 0.6-1.0:1; Through preparing: under the stirring of 60-120 rev/min, solid powder is slowly joined in 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 tap water together with sodium silicate solid, continues stirring and dissolving, until solution is transparent; The modulus of gained water glass solution is that silicon-dioxide is 1.2-2.0 with the ratio of the amount of substance of sodium oxide, 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 in to mixer successively, under normal temperature, normal pressure, with 60-120 rev/min, stir 5-15 minute
get product.
2. according to claim 1
composite gelled material,it is characterized in that:
finished productthrough national standard test, 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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| CN102603217B true CN102603217B (en) | 2014-05-21 |
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| CN102910882B (en) * | 2012-11-08 | 2014-04-02 | 沈阳建筑大学 | Fiber-reinforced alkali-activated cementing material and preparation method thereof |
| CN103553541B (en) * | 2013-10-08 | 2015-02-25 | 重庆建工市政交通工程有限责任公司 | Pile bottom sediment curing agent |
| CN104386961B (en) * | 2014-10-27 | 2016-04-13 | 西安建筑科技大学 | The potassium hydroxide being target with slag chemical composition excites flyash concrete circulation utilization method |
| CN104446040B (en) * | 2014-12-11 | 2016-04-06 | 湖南科技大学 | A kind of preparation method of normal temperature maintenance compound single-component alkali-excited cement |
| CN105481467B (en) * | 2015-11-19 | 2018-03-30 | 重庆燕皓建筑材料有限公司 | A kind of full slag Foam lightweight soil and preparation method thereof |
| CN106145798B (en) * | 2016-07-04 | 2018-05-15 | 河南理工大学 | A kind of alkali-activated slag dual-liquid slip-casting material and preparation method thereof |
| WO2019110134A1 (en) | 2017-12-08 | 2019-06-13 | Ecocem Materials Limited | Ground granulated blast furnace slag based binder, dry and wet formulations made therefrom and their preparation methods |
| EP3724145A4 (en) * | 2017-12-15 | 2021-08-18 | The Catholic University Of America | Control of time of setting of geopolymer compositions containing high-ca reactive aluminosilicate materials |
| CN109776058B (en) * | 2019-02-28 | 2021-05-14 | 陕西理工大学 | Dextrin mortar composite material based on waste mineral powder and preparation method thereof |
| CN110183126B (en) * | 2019-06-06 | 2022-02-18 | 长沙紫宸科技开发有限公司 | Method for preparing carbonate cementing material by taking limestone as raw material |
| CN110434974A (en) * | 2019-08-05 | 2019-11-12 | 江苏禾吉新材料科技有限公司 | A kind of preparation method of the stalk phase transformation plate with phase-change thermal-storage function |
| 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 |
| 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 |
| CN115368035B (en) * | 2022-08-10 | 2023-08-22 | 内蒙古工业大学 | Ca-based 2+ 、Na + Synergistic-excitation special cementing material for multi-element solid waste low-carbon pavement base layer and preparation method thereof |
| CN115893886B (en) * | 2022-11-22 | 2024-01-23 | 河海大学 | Solid waste base alkali-activated cementing material and preparation method thereof |
| CN116102301B (en) * | 2023-02-07 | 2024-05-28 | 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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| CN1300035C (en) * | 2005-04-29 | 2007-02-14 | 华南理工大学 | Retardation method for pretreated bundle of alkali-activated-carbonate/slag gel grouting material |
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| 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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