CN110423057A - Gangue base geological polymer and preparation method thereof - Google Patents

Gangue base geological polymer and preparation method thereof Download PDF

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Publication number
CN110423057A
CN110423057A CN201910814334.5A CN201910814334A CN110423057A CN 110423057 A CN110423057 A CN 110423057A CN 201910814334 A CN201910814334 A CN 201910814334A CN 110423057 A CN110423057 A CN 110423057A
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China
Prior art keywords
gangue
base geological
polymer
geological polymer
alkali
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CN201910814334.5A
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Chinese (zh)
Inventor
李刚
秦伟
赵俊哲
秦选民
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Shenzhen Yimi Da Environmental Protection Technology Co Ltd
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Shenzhen Yimi Da Environmental Protection Technology Co Ltd
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Priority to CN201910814334.5A priority Critical patent/CN110423057A/en
Publication of CN110423057A publication Critical patent/CN110423057A/en
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/12Waste materials; Refuse from quarries, mining or the like
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/006Compositions 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 mineral polymers, e.g. geopolymers of the Davidovits type
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention belongs to building material technical fields, more particularly to a kind of gangue base geological polymer, including 25%~50% gangue coarse aggregate, 20%~40% gangue fine aggregate, 10%~30% gangue powder, 5%~15% blast furnace slag, 5%~10% desulfurized gypsum, the raw material components such as 1%~10% alkali-activator and water.Gangue base geological polymer of the present invention is using Industrial Solid Waste gangue as primary raw material, instead of conventional sand fine aggregate, stone coarse aggregate, flyash etc. keeps gangue base geological polymer stability good by the polymerization reaction between the components such as gangue and blast furnace slag, desulfurized gypsum, alkali-activator, intensity is high, 35MPa can be reached by conserving three days compression strength, and conserving 28 days compression strength can reach 60MPa, without especially adding early strength agent, cement or flyash etc..

Description

Gangue base geological polymer and preparation method thereof
Technical field
The invention belongs to building material technical field more particularly to a kind of gangue base geological polymer and its preparation sides Method.
Background technique
Geo-polymer is also referred to as alkali-excited cement also known as inorganic polymer.Original refers to by geochemistry process or artificial imitation Geology polymerization and the aluminium silicate mineral polymer formed, with geo-polymer research deeply and development, now then Include all using natural minerals or with the solid waste of hydraulically active, is polymerize with oxygen-octahedron with aluminum-oxygen tetrahedron Made of with amorphous state and quasi-crystalline state feature three-dimensional network gel, in chemical component be similar to zeolite.Currently, geology Polymer can obtain the excellent properties of rapid hardening high-strength by room temperature maintenance, have raw material it is cheap it is abundant, production energy consumption is low, intensity The advantages that high, acidproof alkali salt burn into permeability is low, refractoriness, excellent durability, rapidly developing becomes a kind of new material, right Geo-polymer research has reached a new high degree.Geo-polymer using aluminosilicate alkali Industrial Solid Waste as primary raw material, with Alkali-activator extends to waste incineration from flyash, steel slag by the techniques preparation such as mixing, stirring, molding, maintenance, raw material Flying dust, natural clay mineral etc..Construction material, Materials with High Strength, solid core solid waste material and in terms of show Huge application prospect out has environment, society and economic many-sided benefit.
Currently, geo-polymer is not good enough to the utilization rate of Industrial Solid Waste, and the compression strength of geo-polymer, endurance quality Deng still lower, for improve the compression strength of geo-polymer generally require to add cement, early strength agent etc. in geo-polymer it is auxiliary Help reinforcing agent.
Summary of the invention
The purpose of the present invention is to provide a kind of gangue base geological polymers, it is intended to solve existing geo-polymer to work The utilization rate of industry solid waste is not good enough, and the compression strength of geo-polymer is lower, needs addition cement, morning in geo-polymer strong Agent etc. assists the technical problems such as reinforcing agent.
Another object of the present invention is to provide a kind of preparation methods of gangue base geological polymer.
In order to achieve the above-mentioned object of the invention, The technical solution adopted by the invention is as follows:
A kind of gangue base geological polymer is in terms of 100% by the gross mass of gangue base geological polymer, including following The raw material components of mass percentage:
It preferably, is aluminium oxide in the gangue coarse aggregate in terms of 100% by the gross mass of the gangue coarse aggregate Mass percentage is 10%~30%, and the mass percentage of silica is 50%~85%;And/or
It is the quality hundred of aluminium oxide in the gangue fine aggregate in terms of 100% by the gross mass of the gangue fine aggregate Dividing content is 10%~30%, and the mass percentage of silica is 50%~85%;And/or
It is in terms of 100% by the gross mass of the gangue powder, the quality percentage of aluminium oxide contains in the gangue powder Amount is 10%~30%, and the mass percentage of silica is 50%~85%.
It preferably, is in terms of 100% by the gross mass of the blast furnace slag, the quality percentage of silica contains in the blast furnace slag Amount is 40%~80%, and the mass percentage of calcium oxide is 20%~40%;And/or
It is in terms of 100% by the gross mass of the desulfurized gypsum, the mass percentage of calcium sulfate is not in the desulfurized gypsum Lower than 70%.
Preferably, the partial size of the gangue coarse aggregate is 10~50 millimeters;And/or
The partial size of the gangue fine aggregate is 1.5~4 millimeters;And/or
The partial size of the gangue powder is 0.3~0.075 millimeter;And/or
The partial size of the blast furnace slag is 0.15~0.45 millimeter;And/or
The partial size of the desulfurized gypsum is 0.2~1 millimeter.
Preferably, the alkali-activator is selected from: at least one of sodium hydroxide, potassium hydroxide, sodium metasilicate.
Preferably, the purity of the sodium hydroxide is not less than 85%, and the purity of the potassium hydroxide is described not less than 70% The modulus of sodium metasilicate is 1.5~3.5.
Correspondingly, a kind of preparation method of gangue base geological polymer, including following preparation step:
Gangue coarse aggregate, gangue fine aggregate, gangue powder, blast furnace slag and desulfurized gypsum are obtained, by the bastard coal Stone coarse aggregate, the gangue fine aggregate, the gangue powder, the blast furnace slag and the desulfurized gypsum mixed processing, obtain To mixture;
Alkali-activator is obtained, the alkali-activator is dissolved in the water, the aqueous solution of alkali-activator is obtained;
The aqueous solution of the alkali-activator is added to mixed processing in the mixture, obtains the polymerization of gangue base matter Object slurry;
The gangue base geological polymer slurry is entered into mould maintenance, obtains gangue base geological polymer.
Preferably, the step of gangue base geological polymer slurry being entered mould maintenance includes: by the bastard coal ground mass Geo-polymer slurry is placed in mold, after vibration processing under conditions of 20~80 DEG C of temperature, humidity 60~100% at maintenance Reason, obtains gangue base geological polymer.
Preferably, the step of aqueous solution of the alkali-activator being added to mixed processing in the mixture include: by The aqueous solution of the alkali-activator is added to stir process 5~30 minutes in the mixture.
Preferably, after maintenance processing 3 days, the compression strength of the gangue base geological polymer is greater than 25MPa;At maintenance For reason after 28 days, the compression strength of the gangue base geological polymer is greater than 50MPa.
Gangue base geological polymer provided by the invention, including 25%~50% gangue coarse aggregate, 20%~ 40% gangue fine aggregate, 10%~30% gangue powder, 5%~15% blast furnace slag, 5%~10% desulfurization stone Cream, the raw material components such as 1%~10% alkali-activator and water.Gangue base geological polymer of the present invention is with Industrial Solid Waste gangue For primary raw material, instead of conventional sand fine aggregate, stone coarse aggregate, flyash etc., by with gangue and blast furnace slag, desulfurization Polymerization reaction between the components such as gypsum, alkali-activator generates performance and stablizes, and intensity is high, and permeability is low, the coal of excellent durability Spoil base geological polymer, on the one hand, the Industrial Solid Wastes such as gangue, blast furnace slag and desulfurized gypsum are rationally utilized, not only have Preferable economic benefit, and there is preferable environmental benefit;On the other hand, pass through the proportion shape of rational allocation each raw material component At hydrogel polymeric material just have very high mechanical strength in early solidification, 35MPa can be reached by conserving three days compression strength, support Protecting 28 days compression strength can reach 60MPa, without especially adding early strength agent, cement or flyash etc..
The preparation method of gangue base geological polymer provided by the invention, firstly, gangue coarse aggregate, gangue is thin Alkali-activator, then is dissolved in the water to form alkali by aggregate, gangue powder, blast furnace slag and the mixing of desulfurized gypsum isogel material Exciting agent aqueous solution, then alkali-activator aqueous solution and gel rubber material mixture are sufficiently mixed, obtain the polymerization of gangue base matter Gangue base geological polymer can be obtained by entering mould maintenance in object slurry.Gangue base geological polymer provided by the invention Preparation method, process flow is simple, easy to operate, is conducive to industrialized production manufacture.
Specific embodiment
To keep the purpose, technical solution and technical effect of the embodiment of the present invention clearer, in the embodiment of the present invention Technical solution is clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than complete The embodiment in portion.In conjunction with the embodiment in the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the One ", the feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention, " more It is a " it is meant that two or more, unless otherwise specifically defined.
The weight of Related Component noted in the disclosure of the embodiment of the present invention not only may refer to the specific of each component Content can also indicate the proportionate relationship of weight between each component, therefore, as long as according to specification relevant group of the embodiment of the present invention The content divided is scaled up or is reduced within specification of embodiment of the present invention scope of disclosure.Specifically, the present invention is real Applying example weight described in the specification can be mass unit well known to the chemical fields such as μ g, mg, g, kg.
The embodiment of the invention provides a kind of gangue base geological polymers, with the gross mass of gangue base geological polymer For 100% meter, the raw material components including following mass percentage:
Gangue base geological polymer provided in an embodiment of the present invention, including 25%~50% gangue coarse aggregate, 20%~40% gangue fine aggregate, 10%~30% gangue powder, 5%~15% blast furnace slag, 5%~10% Desulfurized gypsum, the raw material components such as 1%~10% alkali-activator and water.Gangue base geological polymer of the embodiment of the present invention is with work Industry solid waste gangue is primary raw material, instead of conventional sand fine aggregate, stone coarse aggregate, flyash etc., by with gangue Polymerization reaction between the components such as blast furnace slag, desulfurized gypsum, alkali-activator generates performance and stablizes, and intensity is high, and permeability is low, resistance to The excellent gangue base geological polymer of long property, on the one hand, the Industrial Solids such as gangue, blast furnace slag and desulfurized gypsum are rationally utilized It is useless, not only there is preferable economic benefit, and there is preferable environmental benefit;On the other hand, pass through each raw material of rational allocation The hydrogel polymeric material that the proportion of component is formed just has very high mechanical strength in early solidification, conserves three days compression strength Reach 35MPa, conserving 28 days compression strength can reach 60MPa, without especially adding early strength agent, cement or flyash etc..
It as a preferred embodiment, is in terms of 100%, in the gangue coarse aggregate by the gross mass of the gangue coarse aggregate The mass percentage of aluminium oxide is 10%~30%, and the mass percentage of silica is 50%~85%.With the coal The gross mass of spoil fine aggregate is 100% meter, in the gangue fine aggregate mass percentage of aluminium oxide be 10%~ 30%, the mass percentage of silica is 50%~85%.It is institute in terms of 100% by the gross mass of the gangue powder The mass percentage for stating aluminium oxide in gangue powder is 10%~30%, the mass percentage of silica is 50%~ 85%.Gangue is one kind of industry and mining solid waste, is the mixture of carbonaceous, shale and arenaceous shale etc., and phosphorus content is high, long Phase air storage, not only land occupation amount is huge, but also due to gangue easily spontaneous combustion, generates the gas of a large amount of smells with irritating It gets into the air and pollutes air, cause serious environmental pollution, exist simultaneously huge security risk.On the one hand, the present invention is real A gangue base geological polymer is applied using gangue as main raw material(s), instead of fine aggregates such as sands in conventional geo-polymer, The coarse aggregates such as stone, the powder raw materials such as flyash, play skeleton and filling effect in geo-polymer, form for geo-polymer Material base is provided, the mechanical strength of geo-polymer is improved;On the other hand, as thick in geo-polymer of the embodiment of the present invention The mass percentage of aluminium oxide is 10%~30% in the gangue of aggregate, fine aggregate and powder, the quality hundred of silica Dividing content is 50%~85%, and the aluminium oxide of high-content and silica can preferably promote gangue and alkali to swash in gangue It sends out other raw material components such as agent and chemical polymerization occurs, enhance the polymerization effect between raw material components, generation stability is good, resists Compressive Strength is high, superior in durability, the low gangue base geological polymer of permeability.
As a preferred embodiment, the partial size of the gangue coarse aggregate is 10~50 millimeters.Gangue of the embodiment of the present invention The partial size of coarse aggregate is 10~50 millimeters, which can play preferable filling in geo-polymer and skeleton is made With improving the mutability and intensity of concrete, and polymerization reaction can occur with alkali-activator and form gel rubber material, be not necessarily to volume The materials such as outer addition cement.
As a preferred embodiment, the partial size of the gangue fine aggregate is 1.5~4 millimeters.Gangue of the embodiment of the present invention The partial size of fine aggregate is 1.5~4 millimeters, and the relatively small aggregate of partial size plays skeleton and filling effect in geo-polymer Granular loose material, and it is more advantageous to the polymerization reaction between gangue and alkali-activator, it can be improved geo-polymer slurry The gelling performance and mobility of material.
As a preferred embodiment, the partial size of the gangue powder is 0.3~0.075 millimeter.Bastard coal of the embodiment of the present invention The partial size of stone powder is 0.3~0.075 millimeter, and the gangue powder of smaller particle further improves each original in geo-polymer Expect the polymerization reaction between component, optimizes the gelling performance of geo-polymer, facilitate application and construction.
In some embodiments, the partial size in gangue base geological polymer including: 25%~50% is 10~50 millimeters Gangue coarse aggregate, 20%~40% partial size is 1.5~4 millimeters of the gangue fine aggregate and 10%~30% grain Diameter is 0.3~0.075 millimeter of the gangue powder, wherein be in terms of 100% by the gross mass of the gangue coarse aggregate, The mass percentage of aluminium oxide is 10%~30% in the gangue coarse aggregate, and the mass percentage of silica is 50%~85%;It is the quality of aluminium oxide in the gangue fine aggregate in terms of 100% by the gross mass of the gangue fine aggregate Percentage composition is 10%~30%, and the mass percentage of silica is 50%~85%;With the total of the gangue powder Quality is 100% meter, and the mass percentage of aluminium oxide is 10%~30% in the gangue powder, the quality of silica Percentage composition is 50%~85%.
It as a preferred embodiment, is the matter of silica in the blast furnace slag in terms of 100% by the gross mass of the blast furnace slag Measuring percentage composition is 40%~80%, and the mass percentage of calcium oxide is 20%~40%.Bastard coal ground mass of the embodiment of the present invention Blast furnace slag can either improve the non-skid property of geo-polymer in geo-polymer, additionally it is possible to improve the wearability of geo-polymer Can, the mass percentage of silica is 40%~80% in blast furnace slag, the mass percentage of calcium oxide is 20%~ 40%, the content of silica and calcium oxide ensures that blast furnace slag with the polymerization reaction effect of alkali-activator, makes coal in formula Spoil base geological polymer has better non-skid property, wear-resisting property and compression strength.
As a preferred embodiment, the partial size of the blast furnace slag is 0.15~0.45 millimeter.Blast furnace described in the embodiment of the present invention The partial size of slag is 0.15~0.45 millimeter, and the blast furnace slag of small particle more improves silica and calcium oxide and alkali in blast furnace slag and swashs The contact area for sending out polymerization reaction between agent is conducive to the reactivity for improving each raw material component in geo-polymer, makes bastard coal Ground mass geo-polymer just has higher mechanical strength in early solidification, without additional addition early strength agent.
It as a preferred embodiment, is calcium sulfate in the desulfurized gypsum in terms of 100% by the gross mass of the desulfurized gypsum Mass percentage is not less than 70%.Desulfurized gypsum of the embodiment of the present invention be in gangue base geological polymer gel rubber material it One, have it is renewable, granularity is small, stable components, and objectionable impurities content is few, it is with high purity the features such as, under the action of alkali-activator Polymerization reaction can occur, the mass percentage of calcium sulfate is not less than 70% in desulfurized gypsum, it is ensured that desulfurized gypsum and alkali The polymerization reaction of the raw material components such as exciting agent improves the gel characteristic of gangue base geological polymer slurry, makes geo-polymer There can be very high mechanical strength in early solidification without additionally adding the auxiliary materials such as cement, early strength agent, meet construction material and answer Use demand.
As a preferred embodiment, the partial size of the desulfurized gypsum is 0.2~1 millimeter.Desulfurization stone described in the embodiment of the present invention The partial size of cream is 0.2~1 millimeter, and each raw material component has bigger contact area in the desulfurized gypsum and geo-polymer of small particle And reactivity.
In some embodiments, the partial size in gangue base geological polymer including: 5%~15% is 0.15~0.45 milli The blast furnace slag of rice and 5%~10% partial size are 0.2~1 millimeter of the desulfurized gypsum, wherein with the blast furnace slag Gross mass is 100% meter, and the mass percentage of silica is 40%~80% in the blast furnace slag, the quality hundred of calcium oxide Dividing content is 20%~40%;It is the quality of calcium sulfate in the desulfurized gypsum in terms of 100% by the gross mass of the desulfurized gypsum Percentage composition is not less than 70%.
As a preferred embodiment, the alkali-activator is selected from: at least one of sodium hydroxide, potassium hydroxide, sodium metasilicate. Gangue oligomer of the embodiment of the present invention uses at least one of sodium hydroxide, potassium hydroxide, sodium metasilicate alkali-activator, on ground Alkali-activator plays the role of catalysed promoted to the aquation of the raw material components such as gangue, blast furnace slag and desulfurized gypsum in matter polymer, And it can excite the raw material components such as gangue, blast furnace slag and desulfurized gypsum that polymerization reaction occurs, to improve geo-polymer Mechanical strength.The mass percentage of alkali-activator of the embodiment of the present invention is 1%~10%, in gangue base geological polymer In, with the increase of alkali-activator concentration, alkali-activator is anti-to the aquation of the raw material components such as gangue, blast furnace slag and desulfurized gypsum Facilitation is answered to accelerate, the mechanical strength of the geo-polymer of preparation gradually rises;After concentration is more than a certain concentration, excessive The lattice structure of raw material components, the machinery for reducing geo-polymer instead are strong in alkali-activator meeting excessive corrosion geo-polymer Degree, therefore, the present invention implement sodium hydroxide, potassium hydroxide, the sodium metasilicate of the raw material components such as gangue, blast furnace slag and desulfurized gypsum At least one of alkali-activator have optimal polymerization to raw material components in geo-polymer, have geo-polymer most preferably Mechanical strength.
As a preferred embodiment, the purity of the sodium hydroxide is not less than 85%, and the purity of the potassium hydroxide is not less than 70%, the modulus of the sodium metasilicate is 1.5~3.5.The purity of sodium hydroxide of the embodiment of the present invention is not less than 85%, the hydrogen-oxygen The purity for changing potassium is not less than 70%, and the modulus of the sodium metasilicate is 1.5~3.5, effectively ensures the active constituent of alkali-activator Content, ensure that alkali-activator to the aquation of raw material components, polymerization in gangue base geological polymer.
In some embodiments, the partial size in gangue base geological polymer including: 25%~50% is 10~50 millimeters Gangue coarse aggregate, the gangue fine aggregate that 20%~40% partial size is 1.5~4 millimeters, 10%~30% grain The gangue powder that diameter is 0.3~0.075 millimeter, the blast furnace that 5%~15% partial size is 0.15~0.45 millimeter Slag, 5%~10% partial size be 0.2~1 millimeter of the desulfurized gypsum and 1%~10% alkali-activator, wherein with described The gross mass of gangue coarse aggregate is 100% meter, in the gangue coarse aggregate mass percentage of aluminium oxide be 10%~ 30%, the mass percentage of silica is 50%~85%;By the gross mass of the gangue fine aggregate be 100% in terms of, The mass percentage of aluminium oxide is 10%~30% in the gangue fine aggregate, and the mass percentage of silica is 50%~85%;It is the quality percentage of aluminium oxide in the gangue powder in terms of 100% by the gross mass of the gangue powder Content is 10%~30%, and the mass percentage of silica is 50%~85%, and the gross mass with the blast furnace slag is 100% counts, and the mass percentage of silica is 40%~80% in the blast furnace slag, and the mass percentage of calcium oxide is 20%~40%;It is the mass percentage of calcium sulfate in the desulfurized gypsum in terms of 100% by the gross mass of the desulfurized gypsum Not less than 70%;The alkali-activator is selected from: at least one of sodium hydroxide, potassium hydroxide, sodium metasilicate, the sodium hydroxide Purity be not less than 85%, the purity of the potassium hydroxide is not less than 70%, and the modulus of the sodium metasilicate is 1.5~3.5.
Gangue base geological polymer provided in an embodiment of the present invention can be prepared by following methods.
The embodiment of the invention also provides a kind of preparation methods of gangue base geological polymer, including following preparation to walk It is rapid:
S10. gangue coarse aggregate, gangue fine aggregate, gangue powder, blast furnace slag and desulfurized gypsum are obtained, it will be described At gangue coarse aggregate, the gangue fine aggregate, the gangue powder, the blast furnace slag and the desulfurized gypsum mixing Reason, obtains mixture;
S20. alkali-activator is obtained, the alkali-activator is dissolved in the water, obtains the aqueous solution of alkali-activator;
S30. the aqueous solution of the alkali-activator is added to mixed processing in the mixture, obtains gangue base matter Polymer paste;
S40. the geo-polymer slurry is entered into mould maintenance, obtains gangue base geological polymer.
The preparation method of gangue base geological polymer provided in an embodiment of the present invention, firstly, by gangue coarse aggregate, coal Alkali-activator, is then dissolved in the water by spoil fine aggregate, gangue powder, blast furnace slag and the mixing of desulfurized gypsum isogel material Alkali-activator aqueous solution is formed, then alkali-activator aqueous solution and gel rubber material mixture are sufficiently mixed, obtains gangue base Gangue base geological polymer can be obtained by entering mould maintenance in matter polymer paste.Gangue provided in an embodiment of the present invention The preparation method of base geological polymer, process flow is simple, easy to operate, is conducive to industrialized production manufacture.
Specifically, in above-mentioned steps S10, gangue coarse aggregate, gangue fine aggregate, gangue powder, blast furnace slag are obtained And desulfurized gypsum, by the gangue coarse aggregate, the gangue fine aggregate, the gangue powder, the blast furnace slag and institute Desulfurized gypsum mixed processing is stated, mixture is obtained.The embodiment of the present invention is first by gangue coarse aggregate, gangue fine aggregate, coal Spoil powder, blast furnace slag and desulfurized gypsum isogel material mixed processing, make each component be uniformly dispersed, and are convenient for subsequent each raw material group The aquation under the excitation of alkali-activator is divided to polymerize, the stable gangue base geological polymer of forming properties.
In some embodiments, in gangue base geological polymer gangue coarse aggregate mass percentage be 25%~ 50%, the mass percentage of gangue fine aggregate is 20%~40%, the mass percentage of gangue powder is 10%~ 30%, the mass percentage of blast furnace slag is 5%~15%, and the mass percentage of desulfurized gypsum is 5%~10%.
In some embodiments, in gangue base geological polymer with the gross mass of the gangue coarse aggregate be 100% It counts, the mass percentage of aluminium oxide is 10%~30% in the gangue coarse aggregate, the mass percentage of silica It is 50%~85%;It is the matter of aluminium oxide in the gangue fine aggregate in terms of 100% by the gross mass of the gangue fine aggregate Measuring percentage composition is 10%~30%, and the mass percentage of silica is 50%~85%;With the gangue powder Gross mass is 100% meter, and the mass percentage of aluminium oxide is 10%~30% in the gangue powder, the matter of silica Measuring percentage composition is 50%~85%, is the matter of silica in the blast furnace slag in terms of 100% by the gross mass of the blast furnace slag Measuring percentage composition is 40%~80%, and the mass percentage of calcium oxide is 20%~40%, with total matter of the desulfurized gypsum Amount is 100% meter, and the mass percentage of calcium sulfate is not less than 70% in the desulfurized gypsum.The grain of the gangue fine aggregate Diameter is 1.5~4 millimeters;The partial size of the gangue powder is 0.3~0.075 millimeter;The partial size of the blast furnace slag be 0.15~ 0.45 millimeter;The partial size of the desulfurized gypsum is 0.2~1 millimeter.
Specifically, in above-mentioned steps S20, alkali-activator is obtained, the alkali-activator is dissolved in the water, alkali-activated carbonatite is obtained The aqueous solution of agent.Alkali-activator is dissolved in the water to form the aqueous solution of alkali-activator by present invention implementation, enables alkali-activator It is mixed instead with gangue coarse aggregate, gangue fine aggregate, gangue powder, blast furnace slag and desulfurized gypsum isogel material rapidly It answers.
In some embodiments, the content of alkali-activator is 1%~10% in gangue base geological polymer, and the alkali swashs Hair agent is selected from: at least one of sodium hydroxide, potassium hydroxide, sodium metasilicate, wherein the purity of the sodium hydroxide is not less than 85%, the purity of the potassium hydroxide is not less than 70%, and the modulus of the sodium metasilicate is 1.5~3.5.
Specifically, in above-mentioned steps S30, the aqueous solution of the alkali-activator is added in the mixture at mixing Reason, obtains gangue base geological polymer slurry.The aqueous solution of the alkali-activator is added to described mixed by the embodiment of the present invention Mixed processing in object is closed, alkali-activator is sufficiently mixed with mixture and the volume between alkali-activator and mixture is accelerated to polymerize instead It answers, generates silico-calcium sulfate oligomer.
In some embodiments, the step of aqueous solution of the alkali-activator being added to mixed processing in the mixture Include: that the aqueous solution of the alkali-activator is added to stir process 5~30 minutes in the mixture, by stir process plus Polymeric chemical between fast alkali-activator and mixture is reacted.
Specifically, in above-mentioned steps S40, the gangue base geological polymer slurry is entered into mould maintenance, obtains gangue Base geological polymer.Gangue base geological polymer slurry of the embodiment of the present invention enters after the curing molding of mould to get to bastard coal Ground mass oligomer can be used directly as construction material.
As a preferred embodiment, the step of gangue base geological polymer slurry being entered mould maintenance includes: will be described Gangue base geological polymer slurry is placed in mold, at 20~80 DEG C of temperature after vibration processing, the condition of humidity 60~100% Lower maintenance processing, obtains gangue base geological polymer.Gangue base geological polymer slurry of the embodiment of the present invention enters mould, passes through Shock effect, excluding bubble in slurry is material more packed uniform in slurry, is conducive to improve gangue base geological polymer Stability and mechanical strength, then maintenance is handled under conditions of 20~80 DEG C of temperature, humidity 60~100%, and curing condition is suitable Answer range wide, it is adaptable.
As a preferred embodiment, after maintenance processing 3 days, the compression strength of the gangue base geological polymer is greater than 25MPa;After maintenance processing 28 days, the compression strength of the gangue base geological polymer is greater than 50MPa.The embodiment of the present invention is logical Crossing different curing times can be obtained the gangue base geological polymer of varying strength, after maintenance processing 3 days, the bastard coal ground mass The compression strength of geo-polymer be greater than 25MPa, illustrate gangue oligomer made from the embodiment of the present invention early solidification just There is very high mechanical strength, does not have to addition early strength agent;After maintenance processing 28 days, the pressure resistance of the gangue base geological polymer Degree is greater than 50MPa, and maximum compressive strength can reach 60MPa, and high mechanical strength can substitute high-mark cement concrete and be applied to The high construction material of compression strength, while there are the good characteristics such as low permeability, excellent durability, environmentally protective, cheap, Application prospect is wide.
To make, the above-mentioned implementation detail of the present invention and operation can be clearly readily appreciated by one skilled in the art and the present invention is real The progress performance for applying gangue base geological polymer and preparation method thereof significantly embodies, and lifts below by way of multiple embodiments Example illustrates above-mentioned technical proposal.
Embodiment 1
A kind of gangue base geological polymer, including preparation step:
1. by 7kg desulfurized gypsum, 15kg gangue powder, 8kg blast furnace slag, 30kg gangue coarse aggregate, 20kg gangue Fine aggregate is put into blender and is uniformly mixed, and obtains mixture.
2. the powdered sodium metasilicate of 3kg, 2kg sodium hydroxide are dissolved in 15kg water, and dissolution is sufficiently stirred, obtains alkali-activated carbonatite Agent aqueous solution.
3. alkali-activator aqueous solution pours into the blender for filling mixture, it is thoroughly mixed, mixing time 5min, Obtain gangue base geological polymer slurry.
4. gangue base geological polymer slurry is poured into grinding tool, the grinding tool equipped with material is placed on plate vibrator Vibration 5 minutes.Mold is put into curing box, and to gangue polymers conserves, and curing condition is 30 DEG C of temperature, humidity 90%, Obtain gangue base geological polymer.
Embodiment 2
A kind of gangue base geological polymer, including preparation step:
1. by 5kg desulfurized gypsum, 20kg gangue powder, 10kg blast furnace slag, 25kg gangue coarse aggregate, 25kg gangue Fine aggregate is put into blender and is uniformly mixed, and obtains mixture.
2. the powdered sodium metasilicate of 2kg, 1kg sodium hydroxide are dissolved in 12kg water, and dissolution is sufficiently stirred, obtains alkali-activated carbonatite Agent aqueous solution.
3. alkali-activator aqueous solution pours into the blender for filling mixture, it is thoroughly mixed, mixing time 5min, Obtain gangue base geological polymer slurry.
4. gangue base geological polymer slurry is poured into grinding tool, the grinding tool equipped with material is placed on plate vibrator Vibration 5 minutes.Mold is put into curing box, and to gangue polymers conserves, and curing condition is 20 DEG C of temperature, humidity 90%, Obtain gangue base geological polymer.
Embodiment 3
A kind of gangue base geological polymer, including preparation step:
1. by 6kg desulfurized gypsum, 18kg gangue powder, 12kg blast furnace slag, 23kg gangue coarse aggregate, 23kg gangue Fine aggregate is put into blender and is uniformly mixed, and obtains mixture.
2. the powdered sodium metasilicate of 2kg, 2kg sodium hydroxide are dissolved in 14kg water, and dissolution is sufficiently stirred, obtains alkali-activated carbonatite Agent aqueous solution.
3. alkali-activator aqueous solution pours into the blender for filling mixture, it is thoroughly mixed, mixing time 5min, Obtain gangue base geological polymer slurry.
4. gangue base geological polymer slurry is poured into grinding tool, the grinding tool equipped with material is placed on plate vibrator Vibration 5 minutes.Mold is put into curing box, and to gangue polymers conserves, and curing condition is 20 DEG C of temperature, humidity 90%, Obtain gangue base geological polymer.
Embodiment 4
A kind of gangue base geological polymer, including preparation step:
1. by 10kg desulfurized gypsum, 20kg gangue powder, 10kg blast furnace slag, 20kg gangue coarse aggregate, 20kg bastard coal Stone fine aggregate, which is put into blender, to be uniformly mixed, and mixture is obtained.
2. the powdered sodium metasilicate of 2.5kg, 2.5kg sodium hydroxide are dissolved in 15kg water, and dissolution is sufficiently stirred, obtains alkali Exciting agent aqueous solution.
3. alkali-activator aqueous solution pours into the blender for filling mixture, it is thoroughly mixed, mixing time 5min, Obtain gangue base geological polymer slurry.
4. gangue base geological polymer slurry is poured into grinding tool, the grinding tool equipped with material is placed on plate vibrator Vibration 5 minutes.Mold is put into curing box, and to gangue polymers conserves, and curing condition is 30 DEG C of temperature, humidity 90%, Obtain gangue base geological polymer.
Further, in order to verify the embodiment of the present invention preparation gangue base geological polymer progressive, the present invention The compression strength of the gangue base geological polymer maintenance different number of days of Examples 1 to 4 is tested, test result is as follows Shown in table 1:
Table 1
By above-mentioned test result it is found that the gangue base geological polymer that the embodiment of the present invention 1~4 provides is conserving just Phase can reach higher compression strength, and after maintenance processing 3 days, the compression strength of the gangue base geological polymer is greater than 25MPa, up to 35MPa;After maintenance processing 28 days, the compression strength of the gangue base geological polymer is greater than 50MPa, maximum Compression strength can reach 60MPa, and high mechanical strength can substitute the high-mark cement concrete building high applied to compression strength Material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (10)

1. a kind of gangue base geological polymer, which is characterized in that with the gross mass of gangue base geological polymer for 100% Meter, the raw material components including following mass percentage:
2. gangue base geological polymer as described in claim 1, which is characterized in that with total matter of the gangue coarse aggregate Amount is 100% meter, and the mass percentage of aluminium oxide is 10%~30% in the gangue coarse aggregate, the quality of silica Percentage composition is 50%~85%;And/or
It is in terms of 100% by the gross mass of the gangue fine aggregate, the quality percentage of aluminium oxide contains in the gangue fine aggregate Amount is 10%~30%, and the mass percentage of silica is 50%~85%;And/or
It is in terms of 100% by the gross mass of the gangue powder, the mass percentage of aluminium oxide is in the gangue powder 10%~30%, the mass percentage of silica is 50%~85%.
3. gangue base geological polymer as claimed in claim 2, which is characterized in that the gross mass with the blast furnace slag is 100% counts, and the mass percentage of silica is 40%~80% in the blast furnace slag, and the mass percentage of calcium oxide is 20%~40%;And/or
It is in terms of 100% by the gross mass of the desulfurized gypsum, the mass percentage of calcium sulfate is not less than in the desulfurized gypsum 70%.
4. the gangue base geological polymer as described in claims 1 to 3 is any, which is characterized in that the gangue coarse aggregate Partial size be 10~50 millimeters;And/or
The partial size of the gangue fine aggregate is 1.5~4 millimeters;And/or
The partial size of the gangue powder is 0.3~0.075 millimeter;And/or
The partial size of the blast furnace slag is 0.15~0.45 millimeter;And/or
The partial size of the desulfurized gypsum is 0.2~1 millimeter.
5. gangue base geological polymer as claimed in claim 4, which is characterized in that the alkali-activator is selected from: hydroxide At least one of sodium, potassium hydroxide, sodium metasilicate.
6. gangue base geological polymer as claimed in claim 5, which is characterized in that the purity of the sodium hydroxide is not less than 85%, the purity of the potassium hydroxide is not less than 70%, and the modulus of the sodium metasilicate is 1.5~3.5.
7. a kind of preparation method of gangue base geological polymer, which is characterized in that including following preparation step:
Gangue coarse aggregate, gangue fine aggregate, gangue powder, blast furnace slag and desulfurized gypsum are obtained, the gangue is thick Aggregate, the gangue fine aggregate, the gangue powder, the blast furnace slag and the desulfurized gypsum mixed processing, are mixed Close object;
Alkali-activator is obtained, the alkali-activator is dissolved in the water, the aqueous solution of alkali-activator is obtained;
The aqueous solution of the alkali-activator is added to mixed processing in the mixture, obtains gangue base geological polymer slurry Material;
The gangue base geological polymer slurry is entered into mould maintenance, obtains gangue base geological polymer.
8. the preparation method of gangue base geological polymer as claimed in claim 7, which is characterized in that by the bastard coal ground mass Geo-polymer slurry enter mould maintenance the step of include: that the gangue base geological polymer slurry is placed in mold, vibration Maintenance is handled under conditions of 20~80 DEG C of temperature, humidity 60~100% after processing, obtains gangue base geological polymer.
9. the preparation method of gangue base geological polymer as claimed in claim 8, which is characterized in that by the alkali-activator Aqueous solution the step of being added to mixed processing in the mixture include: the aqueous solution of the alkali-activator is added to it is described Stir process 5~30 minutes in mixture.
10. the preparation method of the gangue base geological polymer as described in claim 7~9 is any, which is characterized in that at maintenance For reason after 3 days, the compression strength of the gangue base geological polymer is greater than 25MPa;After maintenance processing 28 days, the bastard coal ground mass The compression strength of geo-polymer is greater than 50MPa.
CN201910814334.5A 2019-08-30 2019-08-30 Gangue base geological polymer and preparation method thereof Pending CN110423057A (en)

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CN112321249A (en) * 2020-09-24 2021-02-05 中交武汉港湾工程设计研究院有限公司 Coal gangue based foam light soil and preparation method thereof
CN112851220A (en) * 2021-02-04 2021-05-28 清华大学 Concrete prepared from industrial production waste and preparation method thereof
CN112919854A (en) * 2021-01-14 2021-06-08 辽宁工程技术大学 Coal-based solid waste geopolymer cementing material and preparation method thereof
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CN114804696A (en) * 2022-04-28 2022-07-29 北京中煤矿山工程有限公司 Coal gangue activity excitant and high-fluidity high-solid-content cemented filling slurry
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CN113816638A (en) * 2020-06-19 2021-12-21 中铁西安勘察设计研究院有限责任公司 Coal gangue concrete corrosion inhibitor and coal gangue concrete with sulfate corrosion resistance
CN112321249A (en) * 2020-09-24 2021-02-05 中交武汉港湾工程设计研究院有限公司 Coal gangue based foam light soil and preparation method thereof
CN112321249B (en) * 2020-09-24 2022-02-01 中交武汉港湾工程设计研究院有限公司 Coal gangue based foam light soil and preparation method thereof
CN112279542A (en) * 2020-11-11 2021-01-29 宝武环科武汉金属资源有限责任公司 Steel slag-coal gangue geopolymer and preparation method thereof
CN112919854A (en) * 2021-01-14 2021-06-08 辽宁工程技术大学 Coal-based solid waste geopolymer cementing material and preparation method thereof
CN112851220A (en) * 2021-02-04 2021-05-28 清华大学 Concrete prepared from industrial production waste and preparation method thereof
CN113185253A (en) * 2021-06-04 2021-07-30 许泽胜 Curing material and preparation method and application thereof
CN113441526A (en) * 2021-07-07 2021-09-28 中国电建集团河北省电力勘测设计研究院有限公司 Method for stabilizing heavy metals in waste incineration fly ash by compounding coal gangue and calcium oxide
CN113441526B (en) * 2021-07-07 2023-03-03 中国电建集团河北省电力勘测设计研究院有限公司 Method for stabilizing heavy metals in waste incineration fly ash by compounding coal gangue and calcium oxide
CN114671641A (en) * 2022-03-07 2022-06-28 辽宁工程技术大学 Novel coal gangue aggregate fly ash geopolymer concrete material and preparation method thereof
CN114591059A (en) * 2022-03-30 2022-06-07 东南大学 Low-carbon internal curing lightweight concrete for 3D printing and preparation method thereof
CN114804696A (en) * 2022-04-28 2022-07-29 北京中煤矿山工程有限公司 Coal gangue activity excitant and high-fluidity high-solid-content cemented filling slurry
CN115745560A (en) * 2022-11-29 2023-03-07 泰安市晓然园林市政工程有限公司 Preparation method for making artificial marble by using coal gangue and steel slag as aggregate

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Application publication date: 20191108