CN109534773A - A kind of modified flying dust building latex material, mortar, concrete and preparation method - Google Patents
A kind of modified flying dust building latex material, mortar, concrete and preparation method Download PDFInfo
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- CN109534773A CN109534773A CN201910041590.5A CN201910041590A CN109534773A CN 109534773 A CN109534773 A CN 109534773A CN 201910041590 A CN201910041590 A CN 201910041590A CN 109534773 A CN109534773 A CN 109534773A
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- flying dust
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- latex material
- flyash
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions 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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
It includes the component of following mass fraction that the present invention, which discloses a kind of modified flying dust building latex material, mortar, concrete and preparation method, the modified flying dust building latex material: 1000~3000 parts of incineration of refuse flyash；500~1000 parts of flyash；500~1000 parts of 425# cement；50~300 parts of aluminium ore red mud；20~100 parts of sodium metasilicate；0.1~3 part of functional graphene oxide；10~120 parts of triisopropanolamine；20~150 parts of water-reducing agent and mixing water, wherein water-solid ratio is 0.2~0.5.Technical solution provided by the invention, the heavy metal in incineration of refuse flyash can effectively be solidified, the structure material for making waste incineration fly to substitute cement as one kind is utilized effectively, and obtained mortar and concrete performance is preferable, can effectively solve the problem that the pollution problem of flying dust.
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of modified flying dust building latex material, mixes mortar
Solidifying soil and preparation method.
Background technique
The major gelled material used in engineering construction is cement at present, and cement can not only consume in process of production
The a large amount of energy, while a large amount of carbon dioxide can be also given off, this will cause strong influence to environment, therefore seek one kind
Cement can be replaced to prepare the novel gelled material of high performance concrete, had to environmental protection and sustainable development important
Meaning.
Incineration of refuse flyash (referred to as: flying dust) is one of solid waste of waste incineration and generating electricity, contains plurality of heavy metal, to ring
Border is very harmful, is typically now handled all in accordance with hazardous waste.However, being sent out by chemical component comparison and numerous studies
Existing, incineration of refuse flyash is similar to flyash, has potential pozzolanic properties, can be swashed by certain chemical means, such as alkali
Vitreum that is living, destroying flying dust outer layer etc., discharges activity SiO2、Al2O3, while by aggregation agent in network depolymerization, be broken down into
[SiO4]、[AlO4] etc. monomers or dimer isoreactivity object, end reaction generate the hydraulic cements substance such as C-S-H, C-A-H, be
It is a kind of potentially to can be used as the substance that building latex material uses.But due to containing a large amount of heavy metal in flying dust, make
It obtains it and is applied to there are problems that heavy metal ion is easy to leach and be easy pollution environment when construction material.
Summary of the invention
The main object of the present invention is to propose a kind of modified flying dust building latex material, mortar, concrete and preparation side
Method, it is desirable to provide it is a kind of cement to be replaced to prepare the novel gelled material of high performance concrete, while reducing heavy metal ion
Leaching concentration.
To achieve the above object, the present invention proposes a kind of modified flying dust building latex material, including following mass fraction
Component:
Preferably, the incineration of refuse flyash is 1200~2500 parts, and the flyash is 600~900 parts, the 425#
Cement is 600~900 parts, and the aluminium ore red mud is 100~250 parts, and the sodium metasilicate is 40~80 parts, the functionalization oxidation
Graphene is 0.2~2.5 part, and the triisopropanolamine is 20~100 parts, and the water-reducing agent is 30~120 parts, the mixing water
Quality be 0.24~0.4 times of the sum of above each material quality.
Preferably, the functional graphene oxide includes tartaric acid modified graphene oxide, the modified oxygen of cross-linked chitosan
At least one of the tetraacetic acid modified graphene oxide of graphite alkene, diethylamine and methylolurea modified graphene oxide；With/
Or,
The thickness in monolayer of the functional graphene oxide is 0.3~1.5nm, the length of the functional graphene oxide
It is 5~25 μm.
Preferably, the water-reducing agent is high performance water reducing agent of polyocarboxy acid.
The present invention also proposes a kind of preparation method of modified flying dust building latex material as described above, including following step
It is rapid:
Functional graphene oxide is dissolved in 1/6 mixing water, the first solution is formed；
Triisopropanolamine and water-reducing agent are dissolved in remaining 5/6 mixing water, the second solution is formed；
Incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are mixed to form powder by dry mixing,
Then it is blended into the second solution into powder, carries out first time stirring, then be blended into the first solution, carries out second and stirs, changed
Property flying dust building latex material.
Preferably, incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are mixed into shape by dry mixing
At powder, it is then blended into the second solution into powder, carries out first time stirring, then be blended into the first solution, carries out second and stirs,
The step of obtaining modified flying dust building latex material, specifically includes:
Incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate are mixed
It closes 3~6min and forms powder, second solution is then blended into the powder, stirs 6 under 135~145r/min revolving speed
~8min, then it is blended into first solution, 10~15min is stirred under 280~290r/min revolving speed, obtains modified flying dust building
Use cementitious material.
The present invention it is further proposed that a kind of modified flying dust mortar for building, including modified flying dust building latex material and
Sand, the quality of the sand are 2~4 times of the modified flying dust building latex material quality；
Wherein, the modified flying dust building latex material is modified flying dust building latex material as described above.
Preferably, the partial size of the sand is 0.35-2.0mm.
The present invention is it is further proposed that a kind of modified flying dust build concrete, including modified flying dust gelling material for building
The quality of material, sand and stone, the sand and stone corresponds to the 0.8 of the modified flying dust building latex material quality
~1.4 times and 2~3 times；
Wherein, the modified flying dust building latex material is modified flying dust building latex material as described above.
Preferably, the partial size of the sand is 0.35~2.0mm；And/or the partial size of the stone is 8~25mm.
Modified flying dust building latex material provided by the invention, with incineration of refuse flyash, flyash, 425# cement, aluminium
Mine red mud, sodium metasilicate, functional graphene oxide, triisopropanolamine and water-reducing agent are primary raw material, aoxidize stone by functionalization
Black alkene is modified incineration of refuse flyash, effectively has cured the heavy metal in incineration of refuse flyash, so that waste incineration
Flying dust can be fully utilized as the building material for substituting cement, and obtained building latex material is in practical application
In can satisfy the construction intensity demand of mortar and concrete for building, and durability is good, heavy metal ion leaching concentration is low, such as
This, not only can effectively solve the problem of direct emission of incineration of refuse flyash causes environmental pollution, but also reduce water for building
The use of mud raw material reduces building cementing material cost of material, also further reduces in cement production process and make to environment
At pollution and the energy consumption, realize solid waste recycle and energy-saving and environment-friendly dual purpose.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Incineration of refuse flyash (referred to as: flying dust) is one of solid waste of waste incineration and generating electricity, contains plurality of heavy metal, to ring
Border is very harmful.According to the mandatory requirement of " consumer waste incineration contamination control standard " (GB18485-2014): house refuse is burnt
Burning flying dust should be by Hazardous Wastes Management.The chemical component of incineration of refuse flyash is as shown in table 1 below, it was found that flying dust from table 1
It is similar with the chemical component of flyash and cement.It is found through numerous studies, flying dust is similar to flyash, has potential volcanic ash
Characteristic discharges activity SiO by certain chemical means, such as alkaline activity, the vitreum for destroying flying dust outer layer2、Al2O3, together
When by aggregation agent in network depolymerization, be broken down into [SiO4]、[AlO4] etc. monomers or dimer isoreactivity object, end reaction generate C-S-
H, the hydraulic cements substance such as C-A-H.Therefore, if the former material for building used using incineration of refuse flyash as substitution cement
Material, can not only be such that flying dust is sufficiently recycled, while can also reduce the cost of material of building latex material and reduce rubbish
The direct emission pollution on the environment of rubbish flying ash, application prospect are very optimistic.Waste incineration how is avoided to fly as a result,
The problem of heavy metal ion leaches in the long-term use when ash is applied to construction material becomes abnormal important.
The chemical component of 1 various countries' incineration of refuse flyash of table is compared with 325# cement, flyash
Based on above-mentioned design, the present invention proposes a kind of modified flying dust building latex material, uses functionalization graphene pair
Incineration of refuse flyash is modified, and solidifies heavy metal therein, so that incineration of refuse flyash be made to can be used as a kind of substitution cement
The building material used, a small amount of cement, flyash, ore, water-reducing agent etc. raw material for building of then arranging in pairs or groups, obtains
Cementitious material is able to satisfy the construction intensity requirement of mortar and concrete.In modified flying dust building latex material provided by the invention
An embodiment in, the modified flying dust building latex material includes the component of following mass fraction:
Flyash is the byproduct of thermal power plant, element containing plurality of heavy metal, if not being pocessed and arbitrarily stacking, meeting
Environment is caused great harm, flyash has become the maximum solid pollution source in China at present.Aluminium ore red mud is aluminium work processed
Industry extracts the pollution waste residue being discharged when aluminium oxide, and average 1 ton of aluminium oxide of every production, incidentally 1.0~2.0 tons of generation is red
Mud, China are used as big alumina producing state, the world the 4th, and the red mud discharged every year is up to millions of tons, and a large amount of aluminium ore red mud is not
The sufficiently effective utilization of energy can only stack by the stockyard of large area, occupy a large amount of soils, also cause to environment serious
Pollution, about 70,000,000 tons of the red mud that the whole world generates every year, the red mud that China generates every year is 30,000,000 tons or more.
The generation of a large amount of incineration of refuse flyash, flyash and aluminium ore red mud has caused the production of the mankind, life more
The influence directly or indirectly of aspect, so reduce their harm to greatest extent, realize by all kinds of means, the recycling of quantity greatly
It is extremely urgent.Using incineration of refuse flyash, flyash and aluminium ore red mud as the raw material for building that can substitute cement, although
The resource reutilization of solid waste may be implemented and reduce the dosage of cement, still, since incineration of refuse flyash, flyash and aluminium ore are red
The content of beary metal of mud is higher, causes it during being used as construction material use, heavy metal ion may be easier
It leaches, and is easy to pollute water body.
In technical solution provided by the invention, with incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud, silicic acid
Sodium, functional graphene oxide, triisopropanolamine and water-reducing agent are primary raw material, are burnt by functional graphene oxide to rubbish
It burns flying dust to be modified, the heavy metal in incineration of refuse flyash is effectively had cured, so that incineration of refuse flyash being capable of conduct
It substitutes the building material of cement and is fully utilized, and taken with industrial by-products flyash and industrial residue aluminium ore red mud
Match, then be aided with the ingredients such as common sodium metasilicate, water-reducing agent, obtained building latex material can satisfy in practical applications to be built
The construction intensity demand with mortar and concrete is built, and durability is good, metal ion leaching concentration is low, in this way, can not only be effective
It solves the problems, such as that incineration of refuse flyash, flyash, the direct emission of aluminium ore red mud or heap buried cause Heavy environmental pollution, and subtracts
The use for having lacked cement raw material for building, reduces building cementing material cost of material, also further reduces manufacture of cement mistake
The consumption of pollution on the environment and the energy in journey realizes solid waste and recycles and energy-saving and environment-friendly dual purpose.
In a preferred embodiment of modified flying dust building latex material provided by the invention, the wherein addition of each component
Ratio is more preferably: the incineration of refuse flyash is 1200~2500 parts, and the flyash is 600~900 parts, the 425# water
Mud is 600~900 parts, and the aluminium ore red mud is 100~250 parts, and the sodium metasilicate is 40~80 parts, and the functionalization aoxidizes stone
Black alkene is 0.2~2.5 part, and the triisopropanolamine is 20~100 parts, and the water-reducing agent is 30~120 parts, the mixing water
Quality is 0.24~0.4 times of the sum of above each material quality.The strength character of cementitious material obtained in this proportional region
More preferably with durability.
It by functional graphene oxide is using chemicals to the principle that incineration of refuse flyash is modified in the present invention
Matter activates flying dust, that is, utilizes microstructure, the hydrated product of flying dust and flyash after functional graphene oxide regulation activation
And aperture solution composition etc. prepares modified flying dust building latex material, mortar, concrete, realizes flying dust and comprehensive resource
It utilizes.The functional graphene oxide refers to that graphene oxide has stronger characterization of adsorption to heavy metal by chemical means grafting
Functional group's product obtained, in the present embodiment, the functional graphene oxide can be selected from the modified oxidized stone of tartaric acid
Black alkene, cross-linked chitosan modified graphene oxide, the tetraacetic acid modified graphene oxide of diethylamine and the modified oxidized stone of methylolurea
At least one of black alkene, either any one in above-mentioned four kinds of modified graphene oxides, is also possible to two of them
Or two or more mixture.
Further, the thickness in monolayer of the functional graphene oxide is 0.3~1.5nm, and the functionalization aoxidizes stone
The length of black alkene is 5~25 μm, in this way, the workability of finally obtained cementitious material is more preferable, heavy metal ion leaching concentration
It is lower.
Water-reducing agent is a kind of under conditions of maintaining concrete slump to be basically unchanged, and can be reduced the coagulation of mixing water amount
Native additive has peptizaiton to cement granules after concrete mix is added, and can be reduced unit consumption of water, improves coagulation
The mobility of native mixture, or reduce unit cement consumption, save cement.It is living that common water-reducing agent belongs to anionic surface mostly
Property agent, has lignosulfonates, naphthalene sulphonate formaldehyde polymer etc., in the present embodiment, the water-reducing agent is preferably polycarboxylic acids
High-performance water reducing agent (such as TJ-1 series high performance water reducing agent of polyocarboxy acid).The high performance water reducing agent of polyocarboxy acid is with polycarboxylic acids
A variety of macromolecular organic compounds based on salt are generated through graft copolymerization, have extremely strong water-reducing property, belong to the world today
The environment-friendly type concrete additive of upper technological precedence, is widely used to water conservancy, electric power, harbour, railway, bridge, highway, machine
The concrete construction of field, military engineering and various work China Democratic National Construction Associations main structure.
Present invention further propose that a kind of preparation method of modified flying dust building latex material as described above, according to upper
The material rate for stating the modification flying dust building latex material of offer carries out mixed preparing, flies in modification provided by the invention
The preparation method of grey building latex material obtains in an embodiment, the preparation method of the modified flying dust building latex material,
The following steps are included:
Step S10, functional graphene oxide is dissolved in 1/6 mixing water, forms the first solution；
Wherein, the functional graphene oxide is dissolved in mixing water can be carried out by way of ultrasonic disperse, be made
The functional graphene oxide sufficiently dissolves.Certainly, in other embodiments, other conventional dispersions can also be passed through
Method carries out, such as quickly stirring etc..
Step S20, triisopropanolamine and water-reducing agent are dissolved in remaining 5/6 mixing water, form the second solution；
Step S30, incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are mixed into shape by dry mixing
At powder, it is then blended into second solution into the powder, carries out first time stirring, then be blended into first solution, into
Second of stirring of row, obtains modified flying dust building latex material.
It is first that incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate is abundant by dry mixing hybrid mode
It is uniformly mixed, obtains mixed powder, it is molten that described second prepared in step S20 is then gradually blended into the mixed powder
Liquid after being uniformly mixed, then is blended into first solution prepared in step S10, then quickly stirring to be uniformly mixed to get
The modified flying dust building latex material.
In the present embodiment, the setting of speed of agitator and time are subject to material and are uniformly mixed in step S30, specific real
Under type such as can be used when applying to carry out: incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are being forced
Dry mixing mixes 3~6min and forms powder in formula blender, second solution is then blended into powder, in 135~145r/
6~8min is stirred under min revolving speed, then is blended into first solution, 10~15min is stirred under 280~290r/min revolving speed, i.e.,
Obtain modified flying dust building latex material.The preparation method of modified flying dust building latex material provided by the invention has side
The characteristics of method is simple, strong operability, use easy for construction and easy to spread.Certainly, in other embodiments, step S30 is implemented
When can also be stirred using other kinds of mixing plant, or using the agitating mode progress of other this fields routine.
Modified flying dust building latex material provided by the invention, has at least the following advantages: (1) being flown with waste incineration
Ash, flyash, 425# cement, aluminium ore red mud, sodium metasilicate, functional graphene oxide, triisopropanolamine and water-reducing agent are main
The intensity of raw material, the mortar and concrete that make modified flying dust building latex material preparation meets construction needs, while its is durable
Property it is more preferable, be not only able to satisfy its requirement, additionally it is possible to effective curing heavy metal, the leaching for significantly reducing heavy metal ion are dense
Degree；(2) using the part of cement in incineration of refuse flyash, flyash and aluminium ore red mud alternative materials, by incineration of refuse flyash, powder
Coal ash and aluminium ore red mud are turned waste into wealth, and the direct emission of incineration of refuse flyash, flyash and aluminium ore red mud is not only efficiently solved
It causes the problem of seriously polluting environment, and the usage amount due to reducing cement, obtains production cement bring pollution problem
To improve, it is also greatly reduced the cost of material of building cementing material, solid waste is realized and recycles and energy-saving and environment-friendly dual mesh
's.
The present invention also proposes a kind of modified flying dust mortar for building, including modified flying dust building latex material and sand,
The quality of the sand is 2~4 times of the modified flying dust building latex material quality；Wherein, the modified flying dust building
It is modified flying dust building latex material as described above with cementitious material.
The modified flying dust mortar for building is prepared according to the preparation method of the building mortar of this field routine,
For example, stirring to the two in the modified flying dust building latex material and sand investment mortar mixer is uniformly mixed.Its
In, the partial size of the sand is preferably 0.35~2.0mm.
The present invention is also into proposing a kind of modified flying dust build concrete, including modified flying dust building latex material, sand
The quality of son and stone, the sand and stone corresponds to the 0.8~1.4 of the modified flying dust building latex material quality
Times and 2~3 times；Wherein, the modified flying dust building latex material is modified flying dust building latex material as described above.
The modified flying dust build concrete is prepared according to the preparation method of the building concrete of this field routine
, extremely mixed for example, will be modified and be stirred in flying dust building latex material, sand and stone investment concrete mixer
It is even.Wherein the partial size of the sand is preferably 0.35~2.0mm；And/or the partial size of the stone is preferably 8~25mm.
Modified flying dust provided by the invention mortar for building and concrete have used modified flying dust building as described above
With cementitious material, to have, the cementitious material bring strength character is excellent, durability is good, heavy metal ion leaching concentration
Low advantage, and cost of material is more cheap compared with cement.
Technical solution of the present invention is described in further detail below in conjunction with specific embodiment, it should be understood that following real
It applies example to be only used to explain the present invention, be not intended to limit the present invention.
The preparation of the modified flying dust building latex material of embodiment 1
(1) raw material weighs: incineration of refuse flyash 1000kg, flyash 500kg, 425# cement 1000kg, aluminium ore red mud
100kg, sodium metasilicate 45kg, tartaric acid modified graphene oxide 0.45kg, the high property of triisopropanolamine 35kg, TJ-1 series polycarboxylic acids
Can water-reducing agent 35kg and mixing water 960kg, it is spare.
(2) prepared by cementitious material:
1. tartaric acid modified graphene oxide is added in 160kg mixing water, ultrasonic disperse is sufficiently molten to graphene oxide
Solution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 800kg mixing water, stir triisopropanolamine and water-reducing agent is sufficiently molten
Solution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
5min is mixed, the second solution is then gradually added into blender, 6min is stirred under 140r/min revolving speed, then into blender
The first solution is added, stirs 10min under 285r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 2
(1) raw material weighs: incineration of refuse flyash 1000kg, flyash 700kg, 425# cement 500kg, aluminium ore red mud
70kg, sodium metasilicate 40kg, cross-linked chitosan modified graphene oxide 0.5kg, triisopropanolamine 32kg, TJ-1 series polycarboxylic acids are high
Performance water-reducing agent 30kg and mixing water 780kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 130kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 650kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. the dry mixing in forced mixer of incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate is mixed
5min is closed, the second solution is then gradually added into blender, 8min is stirred under 140r/min revolving speed, then is added into blender
Enter the first solution, stir 15min under 285r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 3
(1) raw material weighs: incineration of refuse flyash 1000kg, flyash 1000kg, 425# cement 800kg, aluminium ore red mud
The tetraacetic acid modified graphene oxide 0.6kg of 90kg, sodium metasilicate 60kg, diethylamine, triisopropanolamine 35kg, TJ-1 series polycarboxylic acids
High-performance water reducing agent 35kg and mixing water 900kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 150kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 750kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
6min is mixed, the second solution is then gradually added into blender, 8min is stirred under 145r/min revolving speed, then into blender
The first solution is added, stirs 12min under 290r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 4
(1) raw material weighs: incineration of refuse flyash 3000kg, flyash 600kg, 425# cement 600kg, aluminium ore red mud
120kg, sodium metasilicate 65kg, methylolurea modified graphene oxide 1.3kg, triisopropanolamine 80kg, TJ-1 series polycarboxylic acids are high
Performance water-reducing agent 50kg and mixing water 1500kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 250kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 1250kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
5min is mixed, the second solution is then gradually added into blender, 7min is stirred under 140r/min revolving speed, then into blender
The first solution is added, stirs 12min under 280r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 5
(1) raw material weighs: incineration of refuse flyash 1200kg, flyash 900kg, 425# cement 900kg, aluminium ore red mud
The tetraacetic acid modified graphene oxide 1.2kg of 90kg, sodium metasilicate 70kg, diethylamine, triisopropanolamine 80kg, TJ-1 series polycarboxylic acids
High-performance water reducing agent 40kg and mixing water 1200kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 200kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 1000kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
5min is mixed, the second solution is then gradually added into blender, 8min is stirred under 140r/min revolving speed, then into blender
The first solution is added, stirs 12min under 285r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 6
(1) raw material weighs: incineration of refuse flyash 1500kg, flyash 800kg, 425# cement 700kg, aluminium ore red mud
100kg, sodium metasilicate 60kg, tartaric acid modified graphene oxide 0.7kg, the high property of triisopropanolamine 70kg, TJ-1 series polycarboxylic acids
Can water-reducing agent 30kg and mixing water 900kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 150kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 750kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
6min is mixed, the second solution is then gradually added into blender, 8min is stirred under 140r/min revolving speed, then into blender
The first solution is added, stirs 12min under 285r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust building latex material of embodiment 7
(1) raw material weighs: incineration of refuse flyash 1800kg, flyash 750kg, 425# cement 850kg, aluminium ore red mud
90kg, sodium metasilicate 60kg, cross-linked chitosan modified graphene oxide 0.9kg, triisopropanolamine 90kg, TJ-1 series polycarboxylic acids are high
Performance water-reducing agent 60kg and mixing water 1200kg, it is spare.
(2) prepared by cementitious material:
1. functional graphene oxide is added in 200kg mixing water, ultrasonic disperse is abundant to functional graphene oxide
Dissolution forms the first solution；
2. triisopropanolamine and water-reducing agent are added in 1000kg mixing water, stir abundant to triisopropanolamine and water-reducing agent
Dissolution forms the second solution；
3. by incineration of refuse flyash, flyash, 425# cement, the dry mixing in forced mixer of aluminium ore red mud and sodium metasilicate
3min is mixed, the second solution is then gradually added into blender, 8min is stirred under 140r/min revolving speed, then into blender
The first solution is added, stirs 12min under 285r/min revolving speed, modified flying dust building latex material is made.
The preparation of the modified flying dust mortar for building of embodiment 8
Take by 1 step of embodiment prepare modification flying dust building latex material 1000kg and sand 2000kg, successively plus
Enter stirring in blender and modified flying dust mortar for building is made to being uniformly mixed, wherein the partial size of sand is 0.35~2.0mm.
The preparation of the modified flying dust mortar for building of embodiment 9
Take by 1 step of embodiment prepare modification flying dust building latex material 1000kg and sand 2500kg, successively plus
Enter stirring in blender and modified flying dust mortar for building is made to being uniformly mixed, wherein the partial size of sand is 0.35~2.0mm.
The preparation of the modified flying dust mortar for building of embodiment 10
Take by 1 step of embodiment prepare modification flying dust building latex material 1000kg and sand 3500kg, successively plus
Enter stirring in blender and modified flying dust mortar for building is made to being uniformly mixed, wherein the partial size of sand is 0.5~1.5mm.
The preparation of the modified flying dust mortar for building of embodiment 11
Take by 1 step of embodiment prepare modification flying dust building latex material 1000kg and sand 4000kg, successively plus
Enter stirring in blender and modified flying dust mortar for building is made to being uniformly mixed, wherein the partial size of sand is 0.5~1.5mm.
The preparation of the modified flying dust build concrete of embodiment 12
Take modification flying dust building latex material 1000kg, sand 800kg and the stone prepared by 1 step of embodiment
2000kg is successively added stirring in blender and modified flying dust mortar for building is made, wherein the partial size of sand to being uniformly mixed
For 0.5~2.0mm mm, the partial size of stone is 8~20mm.
The preparation of the modified flying dust build concrete of embodiment 13
Take modification flying dust building latex material 1000kg, sand 1300kg and the stone prepared by 1 step of embodiment
2700kg is successively added stirring in blender and modified flying dust mortar for building is made, wherein the partial size of sand to being uniformly mixed
For 0.5~2.0mm mm, the partial size of stone is 8~20mm.
The preparation of the modified flying dust build concrete of embodiment 14
Take modification flying dust building latex material 1000kg, sand 1400kg and the stone prepared by 1 step of embodiment
2800kg is successively added stirring in blender and the modified flying dust build concrete of graphene oxide is made to being uniformly mixed,
In, the partial size of sand is 0.35~2mm, and the partial size of stone is 5~20mm.
The preparation of the modified flying dust build concrete of embodiment 15
Take modification flying dust building latex material 1000kg, sand 1100kg and the stone prepared by 1 step of embodiment
2400kg is successively added stirring in blender and modified flying dust build concrete is made, wherein the grain of sand to being uniformly mixed
Diameter is 0.5~2.0mm, and the partial size of stone is 10~25mm.
The preparation of the modified flying dust build concrete of embodiment 16
Take modification flying dust building latex material 1000kg, sand 1400kg and the stone prepared by 1 step of embodiment
3000kg is successively added stirring in blender and modified flying dust build concrete is made, wherein the grain of sand to being uniformly mixed
Diameter is 0.5~2.0mm, and the partial size of stone is 10~25mm.
Comparative example 1
Building latex material is prepared according to the step of embodiment 1, the difference is that, the functionalization in raw material is aoxidized
Graphene such as is substituted at the mixing water of quality.
Comparative example 2
Mortar for building is prepared according to the step of embodiment 8, the difference is that, select comparative example 1 to prepare for building
It is prepared by cementitious material.
Comparative example 3
Build concrete is prepared according to the step of embodiment 12, the difference is that, the building for selecting comparative example 1 to prepare
It is prepared with cementitious material.
Below according to the national standard test method of construction material, mortar to the embodiment and comparative example preparation of above-mentioned offer or
Concrete carries out correlated performance test, and test method and result are as follows:
(1) according to test method as defined in " building mortar basic performance tests method standard " JGJ/T70-2009, to reality
It applies mortar prepared by example 8 to 11 and comparative example 2 and carries out intensity test, test result is as follows shown in table 2.
The intensity test result (MPa) of mortar prepared by 2 embodiment 8 to 11 of table and comparative example 2
| Test specimen | 7d | 14d | 28d | 56d |
| Comparative example 2 | 2.1 | 3.6 | 5.0 | 5.8 |
| Embodiment 8 | 3.8 | 5.8 | 6.5 | 8.4 |
| Embodiment 9 | 3.2 | 6.2 | 7.6 | 9.5 |
| Embodiment 10 | 3.5 | 6.5 | 7.3 | 8.1 |
| Embodiment 11 | 3.7 | 5.9 | 6.8 | 9.2 |
By the measurement result in table 2 it is found that being built with the modified flying dust of the functional graphene oxide of preparation of the embodiment of the present invention
Build with cementitious material be raw material preparation mortar, compression strength be apparently higher than comparative example preparation mortar, can satisfy difference
The requirement of the building and structures that need.
(2) according to test method as defined in " Standard for inspection and assessment of strength of concrete " (GB/T 50107-2010), to implementation
Concrete prepared by example 12 to 16 and comparative example 3 carries out intensity test, and test result is as follows shown in table 3.
The intensity test result (MPa) of concrete prepared by 3 embodiment 12 to 16 of table and comparative example 3
| Test specimen | 7d | 14d | 28d | 56d |
| Comparative example 3 | 10.1 | 14.2 | 15.8 | 16.7 |
| Embodiment 12 | 15.6 | 25.5 | 33.8 | 39.4 |
| Embodiment 13 | 17.1 | 28.2 | 35.6 | 38.5 |
| Embodiment 14 | 18.5 | 29.4 | 35.9 | 39.5 |
| Embodiment 15 | 16.6 | 28.5 | 34.4 | 39.0 |
| Embodiment 16 | 17.9 | 27.4 | 35.1 | 38.7 |
By the test result in table 3 it is found that being built with the modified flying dust of the functional graphene oxide of preparation of the embodiment of the present invention
Build with cementitious material be raw material preparation concrete, 56 days compression strength be respectively 39.4MPa, 38.5MPa, 39.5MPa,
39.0MPa and 38.7MPa can satisfy difference much higher than 56 days compression strength 16.7MPa of concrete prepared by comparative example 3
The requirement of the building and structures that need.
(3) according to the test method in " hazardous waste judging standard leaching characteristic identification " GB 5085.3-2007, test
Mortar and concrete prepared by embodiment 8 to 16 and comparative example 2 and 3 is in acid rain leaching simulated experiment, acid soak experiment, anti-
The stability of heavy metal ion, the weight that will be measured under alkaline experimental, high temperature resistance experiment, freeze-thaw resistance experiment etc. varying environment
Metal ion leaching concentration is compared with limit value specified in national standards for drinking water quality (GB 5749-2006), is tied
Fruit is as shown in table 4 below.
4 heavy metal ion leaching concentration of table is compared with national drinking water standard limit value
By the result in table 4 it is found that the heavy metal ion leaching concentration of mortar and concrete prepared by embodiment 8 to 16 is equal
Lower than the fixation limit value in national standards for drinking water quality.
In summary test data is it is found that modified flying dust building latex material provided by the invention, mortar, concrete
Material property is preferable, can satisfy requirement completely, and because not by the present invention claims add necessary functionalization in comparative example
Graphene oxide composition leads to 28 days compression strength sharp falls, and by carrying out heavy metal exudation research, hair to test specimen
The leaching concentration of the heavy metal ion such as Pb, Cd, Ni is higher than standards for drinking water quality (GB 5749- in existing contrast specimen
2006) prescribed limits in cannot preferably meet requirement.This is because functional graphene oxide provides for the present invention
Building latex material important addition composition, incineration of refuse flyash by activation after start aquation, functionalization graphite oxide
Alkene can effectively polymerize the pattern and structure of hydrated product, improve density, prevent heavy metal from oozing out, to guarantee final obtain
The modified flying dust cementitious material of functional graphene oxide performance.
In addition, being cement by every cubic metre of C15 plain concrete proportion: husky: stone: water=1:2.77:4.75:0.67 needs water
Mud amount is about 280kg, Wuhan City 425#Cement price is 500 yuan/ton or so.Currently, flying dust processing technique is mainly that cement is solid
Change-dangerous waste landfill, cement solidification are that cement cement in hydration process can generate C-S-H and C-A-H gel to weight in flying dust
Metal has preferable solidification.But not only to fill expense huge but also waste land resource for such methods.With force
For Chinese city, to 2016 end of the year whole city more than 7000 tons consumer waste incineration processing daily, 400 tons of left sides of the flying dust generated daily
It is right.Recycling solidification landfill disposal 1m3Flying dust at least wants 2000 yuan or more, and occupies a large amount of soils, and deposit to soil ecosystem
In certain long-term risk.Therefore, the present invention is a kind of flyash treatment method energy saving, low in cost and environmental-friendly,
Economic benefits, environmental benefit are significant.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of modified flying dust building latex material, which is characterized in that the component including following mass fraction:
2. modified flying dust building latex material as described in claim 1, which is characterized in that the incineration of refuse flyash is
1200~2500 parts, the flyash is 600~900 parts, and the 425# cement is 600~900 parts, and the aluminium ore red mud is
100~250 parts, the sodium metasilicate is 40~80 parts, and the functional graphene oxide is 0.2~2.5 part, three isopropanol
Amine is 20~100 parts, and the water-reducing agent is 30~120 parts, and the quality of the mixing water is the sum of above each material quality
0.24~0.4 times.
3. modified flying dust building latex material as claimed in claim 1 or 2, which is characterized in that the functionalization aoxidizes stone
Black alkene includes tartaric acid modified graphene oxide, cross-linked chitosan modified graphene oxide, the tetraacetic acid modified oxidation stone of diethylamine
At least one of black alkene and methylolurea modified graphene oxide；And/or
The thickness in monolayer of the functional graphene oxide is 0.3~1.5nm, and the length of the functional graphene oxide is 5
~25 μm.
4. modified flying dust building latex material as claimed in claim 1 or 2, which is characterized in that the water-reducing agent is poly- carboxylic
Sour high-performance water reducing agent.
5. a kind of preparation method of the modification flying dust building latex material as described in Claims 1-4 any one, feature
It is, comprising the following steps:
Functional graphene oxide is dissolved in 1/6 mixing water, the first solution is formed；
Triisopropanolamine and water-reducing agent are dissolved in remaining 5/6 mixing water, the second solution is formed；
Incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are mixed to form powder by dry mixing, then
It is blended into the second solution into powder, carries out first time stirring, then be blended into the first solution, carries out second and stirs, obtains modified fly
Grey building latex material.
6. the preparation method of modified flying dust building latex material as claimed in claim 5, which is characterized in that by waste incineration
Flying dust, flyash, 425# cement, aluminium ore red mud and sodium metasilicate are mixed to form powder by dry mixing, and is then blended into powder
Two solution carry out first time stirring, then are blended into the first solution, carry out second and stir, and obtain modified flying dust gelling material for building
The step of material, specifically includes:
By incineration of refuse flyash, flyash, 425# cement, aluminium ore red mud and sodium metasilicate, dry mixing mixes 3 in forced mixer
~6min formed powder, second solution is then blended into the powder, under 135~145r/min revolving speed stir 6~
8min, then it is blended into first solution, 10~15min is stirred under 280~290r/min revolving speed, and it is for building to obtain modified flying dust
Cementitious material.
7. a kind of modified flying dust mortar for building, which is characterized in that described including modified flying dust building latex material and sand
The quality of sand is 2~4 times of the modified flying dust building latex material quality；
Wherein, the modified flying dust building latex material is the modification flying dust building as described in Claims 1-4 any one
Use cementitious material.
8. modified flying dust mortar for building as claimed in claim 7, which is characterized in that the partial size of the sand is 0.35-
2.0mm。
9. a kind of modified flying dust build concrete, which is characterized in that including modified flying dust building latex material, sand and
The quality of stone, the sand and stone corresponds to 0.8~1.4 times and 2 of the modified flying dust building latex material quality
~3 times；
Wherein, the modified flying dust building latex material is the modification flying dust building as described in Claims 1-4 any one
Use cementitious material.
10. modified flying dust build concrete according to claim 9, which is characterized in that the partial size of the sand is
0.35~2.0mm；And/or the partial size of the stone is 8~25mm.
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Application publication date: 20190329 |