CN106746826A - A kind of new alkali-activated slag fly ash gel material retarder and preparation method - Google Patents
A kind of new alkali-activated slag fly ash gel material retarder and preparation method Download PDFInfo
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- CN106746826A CN106746826A CN201710014775.8A CN201710014775A CN106746826A CN 106746826 A CN106746826 A CN 106746826A CN 201710014775 A CN201710014775 A CN 201710014775A CN 106746826 A CN106746826 A CN 106746826A
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- Prior art keywords
- stalk
- fly ash
- retarder
- gel material
- activated slag
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- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of new alkali-activated slag fly ash gel material retarder of the present invention and preparation method, stalk stem, leaf are separated and dried, take stalk stem and cut into chunks and be broken into roughly with ball mill after the 5mm of length 1 is well mixed with silicon ash, it is put into the 60min of grinding 10 in ball mill, to 400 1000 mesh powder, obtain final product.The present invention prepares new alkali-activated slag fly ash gel material retarder by main raw material(s) of stalk, maize straw resource is abundant and cheap, instead of price is high, complex production process, conventional retarder not environmentally, retarding effect is obvious, stalk can play a part of fiber again simultaneously, improve its fragility.The present invention provides new approach, and simple production process for stalk comprehensive utilization, and environmental protection is with low cost, and economic benefit and social benefit are very notable.
Description
Technical field：
The present invention discloses a kind of new alkali-activated slag-fly ash gel material retarder, is a kind of alkali-activated slag-flyash
Binder Materials modifying agent, while additionally providing its preparation method, belongs to building material technical field.
Background technology：
Alkali-activated slag-fly ash gel material is geopolymer gelled material, and this material can utilize ore deposit when product is manufactured
Thing waste is conserved in the short time as raw material, under certain condition and can reach higher-strength, at the same its product have it is excellent
Mechanical performance and acid and alkali-resistance, fire resisting, resistant to elevated temperatures performance, construction material, Materials with High Strength, solid core solid waste material, encapsulant,
There is application with the aspect such as exotic material.Even so, because the slurry setting time of this material is too short, it is impossible to reach state
The standard of family's regulation, is unfavorable for the forming operation of slurry in application process, it is difficult to ensure that the intensity and other performances of product will
Ask, the big shortcoming while alkali-activated slag-fly ash gel material enbrittles also limits its application to a certain extent.
The conventional retarder of alkali-activated slag-fly ash gel material also has BF, TH, FQ compound retarder, can make alkali ore deposit
Slag-fly ash gel material Slow setting time is arbitrarily adjusted in 19h, but this retarder preparing process is considerably complicated, raw material valency
Lattice are also at a relatively high, and not environmentally；All there is the few slow setting effect of consumption in other retarder such as CBM, CBA series, YP series retarder
Not substantially, many intensity of consumption are remarkably decreased fruit, and consumption is difficult to control to, while preparation technology is complicated, it is expensive, in Practical Project
In be difficult to apply；The retarder such as gypsum, tartaric acid retarding effect under the conditions of standard curing is more apparent, steam-cured rapid curing condition
Under have no actual retarding effect；Using organic silicon surfactant slag particle surface set up film prevent or delay aquation to enter
Though journey is effective, can not reach《Common portland cement》Presetting period specified in GB175-2007/XG2-2015 is not
45min must be less than and final setting time cannot be greater than the requirement of 390min, influence its practical application.Someone extracts sugar using stalk
Solution is acted on by catalyst there is oxidation reaction with certain material, and generation sodium gluconate is used as retarder, but it is made
Standby complex process, production difficulty is big, high cost, and does not refer to its retarding effect, and sodium gluconate can influence alkali to swash
Sending out the later strength of slag-fly ash Binder Materials makes it produce strength retraction.
Stalk is abundant in china natural resources, but regeneration rate is relatively low, and substantial amounts of stalk is incinerated, and produces haze, serious dirty
Dye environment, causes the significant wastage of stalk resource.
The content of the invention：
It is to solve alkali-activated slag-powder the invention provides a kind of new alkali-activated slag-fly ash gel material retarder
The solidifying problem of the sudden strain of a muscle of coal ash Binder Materials, while solve later strength and declining problem and improving its fragility.
Invention further provides a kind of preparation method of new alkali-activated slag-fly ash gel material retarder,
Simple production process, environmental protection is with low cost, it is adaptable to industrialized production.
The present invention provides a kind of new alkali-activated slag-fly ash gel material retarder, it is characterised in that be by following
What the raw material of ratio of weight and number was made：
Stalk 50-95 parts, silicon ash 5-50 parts.
A kind of new alkali-activated slag-fly ash gel material retarder that the present invention is provided, described stalk is corn
Stalk stem, length is 1-5mm.
The preparation method of a kind of new alkali-activated slag-fly ash gel material retarder that the present invention is provided, its feature
It is to comprise the following steps that：
1）Stalk is separated and broken：
Stalk stem, leaf are separated and dried, the cuts into chunks length 1-5mm that be broken into roughly with ball mill of stalk stem is taken stand-by；
2）By step 1）After broken stalk is well mixed with silicon ash in proportion, grinding 10-60min in ball mill is put into, extremely
400-1000 mesh powder, obtains final product the present invention.
The present invention is to produce new alkali-activated slag-fly ash gel material retarder by main raw material(s) of stalk, from stalk
From the point of view of structure composition, it contains the materials such as substantial amounts of cellulose, lignin and hemicellulose, is added to alkali-activated slag-powder
Fibration can be played in coal ash Binder Materials, so as to improve its fragility.Can make with ehter bond phase after stalk meets aqueous slkali
Lignin structure unit even disconnects, while connect lignin being broken because of saponification and fiber with the ester bond of hemicellulose
Hydrogen bond fracture between element and half fiber, is decomposed into monose, and carbohydrate contains many-OH functional groups, in alkaline medium with it is free
Ga2+The unstable complex compound of generation, controls Ga in aquation initial stage liquid phase2+Concentration produce deferred action, it is same with this
When, hydroxyl, by hydrogen bond association, makes alkali-activated slag-fly ash gel material particle surface form one layer of solvent easily with hydrone
Change moisture film, heat evolution velocity is hindered, so that the effect with slow setting.
Silicon ash main component is silica, and with high activity, at 0.1~0.3 μm, specific surface area is average grain diameter
20~28m2/g.Its fineness and specific surface area are about 80~100 times of cement, 50~70 times of flyash, belong to superfine powder, energy
Hole enough between filling alkali-activated slag-fly ash gel material material granule, so as to improve its later strength.Meanwhile, silicon ash
Grinding aid effect can be played, solves the problems, such as easily to reunite during stalk grinding.Fig. 1 is new alkali-activated slag-flyash
Binder Materials retarder scanning electron microscope (SEM) photograph.
The positive effect of the present invention is：The present invention prepares new alkali-activated slag-fine coal by main raw material(s) of stalk
Grey Binder Materials retarder, maize straw resource is abundant and cheap, instead of price is high, complex production process, not environmentally normal
With retarder, retarding effect substantially, while stalk can play a part of fiber again, improves its fragility.The present invention is comprehensive for stalk
Close using new approach is provided, and simple production process, environmental protection is with low cost, economic benefit and social benefit ten
Divide notable.
Brief description of the drawings：
Fig. 1 is new alkali-activated slag of the invention-fly ash gel material retarder scanning electron microscope (SEM) photograph：
Fig. 2 is new alkali-activated slag-fly ash gel material retarder of the invention；
Fig. 3 is bend-press ratio of the present invention and retarder volume relation curve.
Specific embodiment：
Further illustrated the description present invention by following examples, the present invention is limited never in any form, without departing substantially from this hair
On the premise of bright technical solution, those of ordinary skill in the art made for the present invention easily realize any change or
Change is fallen within scope of the presently claimed invention.
Embodiment 1：
1st, maize straw is separated and broken：Maize straw stem, leaf are separated and dried, the present invention takes stalk stem and cuts into chunks and uses ball milling
It is stand-by that machine is broken into roughly length 1-5mm.
2nd, weigh 0.95 kilogram of maize straw and 0.05 kilogram of silicon ash grinding aid is well mixed with maize straw, stir 2-
3min, after the completion of mixing, is put into ball mill grinding 30min, with 0.02 millimeter（700 mesh）Sieve, that is, be obtained a kind of new
Alkali-activated slag-fly ash gel material retarder.
Embodiment 2：
1st, maize straw is separated and broken：Maize straw stem, leaf are separated and dried, the present invention takes stalk stem and cuts into chunks and uses ball milling
It is stand-by that machine is broken into roughly length 1-5mm.
2nd, 0.8kg maize straws are weighed and 0.2kg silicon ash grinding aids are well mixed with maize straw, stir 2-3min,
After the completion of mixing, ball mill grinding 30min is put into, with 0.02 millimeter（700 mesh）Sieve, make its fineness reach 700 mesh with
Under, that is, a kind of new alkali-activated slag-fly ash gel material retarder is obtained.
Embodiment 3：
1st, maize straw is separated and broken：Maize straw stem, leaf are separated and dried, the present invention takes stalk stem and cuts into chunks and uses ball milling
It is stand-by that machine is broken into roughly length 1-5mm.
2nd, 0.7kg maize straws are weighed and 0.3kg silicon ash grinding aids are well mixed with maize straw, stir 2-3min,
After the completion of mixing, ball mill grinding 30min is put into, with 0.02 millimeter（700 mesh）Sieve, make its fineness reach 700 mesh with
Under, that is, a kind of new alkali-activated slag-fly ash gel material retarder is obtained.
Embodiment 4：
1st, maize straw is separated and broken：Maize straw stem, leaf are separated and dried, the present invention takes stalk stem and cuts into chunks and uses ball milling
It is stand-by that machine is broken into roughly length 1-5mm.
2nd, 0.6kg maize straws are weighed and 0.4kg silicon ash grinding aids are well mixed with maize straw, stir 2-3min,
After the completion of mixing, ball mill grinding 30min is put into, with 0.02 millimeter（700 mesh）Sieve, make its fineness reach 700 mesh with
Under, that is, a kind of new alkali-activated slag-fly ash gel material retarder is obtained.
Embodiment 5：
1st, maize straw is separated and broken：Maize straw stem, leaf are separated and dried, the present invention takes stalk stem and cuts into chunks and uses ball milling
It is stand-by that machine is broken into roughly length 1-5mm.
2nd, 0.5kg maize straws are weighed and 0.5kg silicon ash grinding aids are well mixed with maize straw, stir 2-3min,
After the completion of mixing, ball mill grinding 30min is put into, with 0.02 millimeter（700 mesh）Sieve, make its fineness reach 700 mesh with
Under, that is, a kind of new alkali-activated slag-fly ash gel material retarder is obtained.
Test example
Performance test is carried out with activated slag-fly ash gel material to retarder prepared by embodiment 1-5.Setting time is detected
Method according to《Cement normal consistency water consumption, setting time, the stability method of inspection》GB/T1346-2011 national standards are entered
OK；Strength detecting method according to《Test method for strength of hydraulic cement mortar（ISO methods）》GB/T 17617-1999 are carried out；Test block maintenance
It is divided into two benches：First stage curing condition is steam curing conservation, and temperature is 60 DEG C, curing time 24h, and second stage is naturally foster
Shield, 20 DEG C of curing temperature, humidity 95%, curing time 48h, experimental result such as table 1 and Fig. 3.
The retarder of table 1. is to activated slag-fly ash gel material performance impact
| Embodiment | Volume（%） | Retarder specific surface area (m2/g) | Presetting period (min) | Final setting time (min) | Rupture strength (MPa) | Compression strength (MPa) |
| Embodiment 1 | 0 | ------- | 10 | 41 | 14 | 96.3 |
| Embodiment 2 | 3 | 0.7955 | 48 | 156 | 14.6 | 96.6 |
| Embodiment 3 | 4 | 0.8326 | 52 | 207 | 14.6 | 95.9 |
| Embodiment 4 | 5 | 0.8673 | 89 | 253 | 14.8 | 96.3 |
| Embodiment 5 | 6 | 0.9261 | 102 | 389 | 14.9 | 96.2 |
To sum up, setting time can be seen that with the increase of stalk volume from table 1, and the glucide in stalk is ceaselessly
Dissolution, makes first, final setting time gradually extend, and when volume is in 3%-6%, retarding effect preferably, fully meets《Common Portland water
Mud》Presetting period specified in GB175-2007/XG2-2015 cannot be less than 45min, final setting time and cannot be greater than 390min's
It is required that；
Specific surface area can be seen that in retarder that retarder specific surface area is bigger after silicon ash constituent content grinding higher from table 1,
I.e. grind -aiding effect is more obvious, but silicon ash content it is excessive when, due to that can be brought negatively to retarding effect containing active silica
Influence, therefore, at 50-95 parts, silicon ash component optimum content is at 5-50 parts for maize straw component optimum content.
From figure 3, it can be seen that as the increase of retarder volume, bend-press ratio gradually increase, illustrating retarder to alkali-activated carbonatite
The fragility of slag-fly ash Binder Materials has greatly improved.
Claims (3)
1. a kind of new alkali-activated slag-fly ash gel material retarder, it is characterised in that be by following ratio of weight and number
What raw material was made：
Stalk 50-95 parts, silicon ash 5-50 parts.
2. a kind of new alkali-activated slag-fly ash gel material retarder according to claim 1, it is characterised in that：
Described stalk is maize straw stem, and length is 1-5mm.
3. the preparation side of a kind of new alkali-activated slag-fly ash gel material retarder according to claim 1 and 2
Method, it is characterised in that：Methods described is comprised the following steps that：
1）Stalk stem, leaf are separated and dried, the cuts into chunks length 1-5mm that be broken into roughly with ball mill of stalk stem is taken stand-by；
2）By step 1）After broken stalk is well mixed with silicon ash in proportion, grinding 10-60min in ball mill is put into, extremely
400-1000 mesh powder, obtains final product the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710014775.8A CN106746826B (en) | 2017-01-10 | 2017-01-10 | A kind of alkali-activated slag-fly ash gel material retarder and preparation method |
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| CN201710014775.8A CN106746826B (en) | 2017-01-10 | 2017-01-10 | A kind of alkali-activated slag-fly ash gel material retarder and preparation method |
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| Publication Number | Publication Date |
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| CN106746826A true CN106746826A (en) | 2017-05-31 |
| CN106746826B CN106746826B (en) | 2019-01-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021090193A1 (en) | 2019-11-05 | 2021-05-14 | University Of Pretoria | Novel cementitious composition |
| CN112960924A (en) * | 2021-01-27 | 2021-06-15 | 广东能源集团科学技术研究院有限公司 | High-chlorine fly ash cementing material and preparation method thereof |
| CN113105170A (en) * | 2021-04-15 | 2021-07-13 | 山东农业大学 | 3D printing alkali-activated geopolymer composite material doped with kenaf bast fiber crop straw and preparation method thereof |
| CN115321858A (en) * | 2022-08-15 | 2022-11-11 | 中晶环境科技股份有限公司 | Cementitious material, method for its preparation and use of composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6435770B1 (en) * | 2000-10-20 | 2002-08-20 | Advanced Material Technologies Llc | Method of forming a synthetic cap on a bulk material pile |
| CN102643040A (en) * | 2012-03-23 | 2012-08-22 | 辽宁岩砂晶建材有限公司 | Preparation method of retarder for concrete and equipment adopted by preparation method |
-
2017
- 2017-01-10 CN CN201710014775.8A patent/CN106746826B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6435770B1 (en) * | 2000-10-20 | 2002-08-20 | Advanced Material Technologies Llc | Method of forming a synthetic cap on a bulk material pile |
| CN102643040A (en) * | 2012-03-23 | 2012-08-22 | 辽宁岩砂晶建材有限公司 | Preparation method of retarder for concrete and equipment adopted by preparation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021090193A1 (en) | 2019-11-05 | 2021-05-14 | University Of Pretoria | Novel cementitious composition |
| CN112960924A (en) * | 2021-01-27 | 2021-06-15 | 广东能源集团科学技术研究院有限公司 | High-chlorine fly ash cementing material and preparation method thereof |
| CN113105170A (en) * | 2021-04-15 | 2021-07-13 | 山东农业大学 | 3D printing alkali-activated geopolymer composite material doped with kenaf bast fiber crop straw and preparation method thereof |
| CN115321858A (en) * | 2022-08-15 | 2022-11-11 | 中晶环境科技股份有限公司 | Cementitious material, method for its preparation and use of composition |
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| CN106746826B (en) | 2019-01-18 |
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Effective date of registration: 20191220 Address after: No. 243, Shuangshan South Road, Chaoyang District, Changchun City, Jilin Province 130000 Patentee after: Changchun changchihongcheng Concrete Co., Ltd Address before: 130118 No. 5088 Xincheng street, Jilin, Changchun Patentee before: Jilin Jianzhu University |
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Address after: No.243, Shuangshan South Road, Chaoyang District, Changchun City, Jilin Province Patentee after: Changchun Changchi Environmental Protection Technology Co.,Ltd. Address before: No.243, Shuangshan South Road, Chaoyang District, Changchun City, Jilin Province Patentee before: Changchun changchihongcheng Concrete Co.,Ltd. |
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