CN108467213A - The modification processing method of concrete flyash - Google Patents
The modification processing method of concrete flyash Download PDFInfo
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- CN108467213A CN108467213A CN201810278431.2A CN201810278431A CN108467213A CN 108467213 A CN108467213 A CN 108467213A CN 201810278431 A CN201810278431 A CN 201810278431A CN 108467213 A CN108467213 A CN 108467213A
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- flyash
- concrete
- processing method
- fine powder
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Classifications
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
- C04B18/00—Use 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
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of modification processing methods of concrete flyash, are that ball mill is added in flyash, crush, and sieving obtains flyash fine powder；Sodium radio-phosphate,P-32 solution immersion is added, flyash fine powder is dried in cleaning；Finally the flyash fine powder dried is added in batch mixer, it heats, is added under high-speed stirred and is stirred by the mixed modifier that maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and fatty alcohol polyoxyethylene ether methyl-monosilane form, discharging, it dries, you can complete the modification of flyash.The advantages that flyash dispersibility that the present invention is modified improves, stability is good, water absorption rate is remarkably decreased, early strength improves and concrete base-material compatibility is good etc., stability is good.The flyash that this method was modified is applied in concrete, and compression strength, tensile splitting strength, the impermeability of concrete significantly improve.
Description
Technical field
The present invention relates to inorganic raw material technical field of modification, the modification side of specifically a kind of concrete flyash
Method.
Background technology
Flyash is a kind of industrial residue, and China is accumulated over the years stacks total amount up to 1,000,000,000 tons or more, at present to flyash
Utilization rate there was only 40% or so, it is most of still to occupy a large amount of soil heaps and store away, polluted environment, destroy the ecological balance.
By the further investigation to flyash physicochemical properties, the form and surface texture of particle are similar to activated carbon, have compared with
Big specific surface area, while there are a large amount of Al, Fe isoreactivity points in flyash, with stronger adsorption capacity.Flyash
It has broad application prospects in terms of wastewater treatment,
Since the adsorption capacity of flyash is not high, in order to improve the absorption property of flyash, it is therefore desirable to change to flyash
Property.Currently, mainly having to the modification of raw material flyash, sour modification, alkali modification, salt be modified, mixed and modified and surfactant changes
The methods of property.Modified flyash shows the raising of the treatment effeciency to different quality waste water.But current modification side
Method has the following disadvantages：Complex process, cost are higher, modified effect is bad.Therefore, a kind of to have simultaneously compared with high performance-price ratio and excellent
The method of modifying of the flyash of anisotropic energy has great importance for the popularization and application of flyash.
The disclosure of background above technology contents is only used for inventive concept and the technical solution that auxiliary understands the present invention, not
The prior art for necessarily belonging to present patent application, no tangible proof show the above present patent application the applying date
In the case of having disclosed, above-mentioned background technology should not be taken to the novelty and creativeness of evaluation the application.
Invention content
The present invention for existing flyash there are the problem of, a kind of modification processing method of concrete flyash is provided.
The flyash dispersibility that this method of modifying obtains improves, stability is good, water absorption rate is remarkably decreased, early strength improves and coagulation
The advantages that soil matrix material compatibility improves.
In order to achieve the goal above, the technical solution adopted by the present invention is as follows：
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed, sieving obtains flyash fine powder；
S2：Sodium radio-phosphate,P-32 solution is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 2-4 times, it is thin to dry flyash
Powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 50-70 DEG C, powder is incorporated as under high-speed stirred
The mixed modifier of coal ash weight 1-3% stirs 10-20min, and the mixed modifier is by maleic rosin octyl phenol polyoxyethylene ether
Diester carboxyl acid natrium and fatty alcohol polyoxyethylene ether methyl-monosilane composition, discharging are dried, you can complete the modification of flyash.
Preferably, the mass concentration of sodium radio-phosphate,P-32 solution described in step S2 is 5-10%.
Preferably, the soaking time described in step S2 is 12-24h.
Preferably, high-speed stirred described in step S3 is stirred in the case where rotating speed is 500-1000r/min.
Preferably, maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and fatty alcohol polyoxy in the mixed modifier
The weight ratio of vinethene methyl-monosilane is 1:1-3.
Preferably, the fatty alcohol polyoxyethylene ether methyl-monosilane is ethoxylated dodecyl alcohol methyl-monosilane, lauryl alcohol
One kind in polyoxyethylene ether methyl-monosilane, Brij-721 methyl-monosilane.
Preferably, the ball mill is horizontal ball mill.
Preferably, it is to be crushed to 40-100 mesh to be crushed described in step S1.
Compared with prior art, it advantages of the present invention and has the beneficial effect that：
1, the method for the present invention is first once modified flyash with sodium phosphate, then double with maleic rosin octyl phenol polyoxyethylene ether
Ester carboxylic acid sodium and fatty alcohol polyoxyethylene ether methyl-monosilane modifying agent carry out second of modified, modified obtained flyash dispersibility
Improve, stability is good, water absorption rate is remarkably decreased, early strength improves, with that concrete base-material compatibility is good, stability is good etc. is excellent
Point.
2, it is applied in concrete by the flyash that the method for the present invention was modified, the compression strength of concrete, splitting are anti-
Tensile strength, impermeability significantly improve, and modified flyash does not have harmful effect to the performance of concrete batching system.
3, there are the flyash that the present invention was modified excellent properties large-scale application can be obtained in concrete, effectively drop
Low rejected fly ash pollution on the environment, turns waste into wealth, and is conducive to build low-carbon circular economy society.
4, modifying agent raw material sources of the present invention are extensive, use cost is low, simple for process, environment friendly and pollution-free, have good
Economic benefit, ecological benefits and social benefit.
Specific implementation mode
Invention is further described in detail With reference to embodiment.It is emphasized that following the description is only
It is merely exemplary, the range being not intended to be limiting of the invention and its application.
Embodiment 1
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 60 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 8% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 3 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 60 DEG C, is stirred in the case where rotating speed is 500r/min
The mixed modifier stirring 15min of flyash weight 3% is incorporated as under state, the mixed modifier is 1 by mass ratio:2 horse
Come rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and ethoxylated dodecyl alcohol methyl-monosilane composition, discharging is dried, you can
Complete the modification of flyash.
Embodiment 2
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 40 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 10% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 4 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 70 DEG C, is stirred in the case where rotating speed is 800r/min
The mixed modifier stirring 10min of flyash weight 1.5% is incorporated as under state, the mixed modifier is 1 by mass ratio:1
Maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and Brij-721 methyl-monosilane composition, discharging are dried, i.e.,
It can complete the modification of flyash.
Embodiment 3
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 100 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 5% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 2 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 60 DEG C, is stirred in the case where rotating speed is 1000r/min
The mixed modifier stirring 20min that flyash weight 3.0% is incorporated as under state is mixed, the mixed modifier is 1 by mass ratio:1
Maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and Dodecyl Polyoxyethylene Ether methyl-monosilane composition, discharging, dry,
The modification of flyash can be completed.
Embodiment 4
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 40 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 10% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 4 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 70 DEG C, is stirred in the case where rotating speed is 500r/min
The mixed modifier stirring 20min of flyash weight 1.0% is incorporated as under state, the mixed modifier is 1 by mass ratio:3
Maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and ethoxylated dodecyl alcohol methyl-monosilane composition, discharging are dried, i.e.,
It can complete the modification of flyash.
Embodiment 5
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 60 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 8% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 4 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 70 DEG C, is stirred in the case where rotating speed is 500r/min
The mixed modifier stirring 15min of flyash weight 2.5% is incorporated as under state, the mixed modifier is 1 by mass ratio:2
Maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and Brij-721 methyl-monosilane composition, discharging are dried, i.e.,
It can complete the modification of flyash.
Embodiment 6
A kind of modification processing method of concrete flyash, includes the following steps：
S1：Ball mill is added in flyash, is crushed to 100 mesh, is sieved, obtains flyash fine powder；
S2：The sodium radio-phosphate,P-32 solution that mass concentration is 10% is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 3 times,
Dry flyash fine powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 60 DEG C, is stirred in the case where rotating speed is 800r/min
The mixed modifier stirring 10min of flyash weight 3.0% is incorporated as under state, the mixed modifier is 1 by mass ratio:3
Maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and Dodecyl Polyoxyethylene Ether methyl-monosilane composition, discharging are dried, i.e.,
It can complete the modification of flyash.
Comparative example 1
This comparative example and embodiment 6 the difference is that：The flyash fine powder that step S2 is obtained is without 6 step S3 of embodiment
Method of modifying.
Comparative example 2
This comparative example and embodiment 6 the difference is that：Flyash fine powder is without embodiment 6 step S2 and step S3.
Application Example
The flyash that the flyash and comparative example that are modified by embodiment 1-6 obtain is applied in concrete, wherein mixed
Solidifying soil the ratio of each component is：100 parts of flyash, 600 parts of sand, 700 parts of rubble, 400 parts of cement and suitable quantity of water.By each component
It is added in concrete mixer and is stirred according to conventional concrete preparation process.Obtained concrete is by detection, product
Performance it is as shown in table 1.
Table 1：Modified coal ash of the present invention applies the properties of product in concrete
| Product | The slump（mm） | 7 days compression strength/MPa | 28 days compression strength/MPa | 28 days split tensile strength/MPa | 28 days seepage-resistant grades |
| Embodiment 1 | 258 | 37.8 | 45.5 | 2.58 | W8 |
| Embodiment 2 | 265 | 39.6 | 50.4 | 2.71 | W8 |
| Embodiment 3 | 289 | 45.1 | 53.7 | 2.89 | W8 |
| Embodiment 4 | 234 | 34.7 | 41.5 | 2.21 | W8 |
| Embodiment 5 | 247 | 36.2 | 43.6 | 2.35 | W8 |
| Embodiment 6 | 271 | 43.2 | 48.5 | 2.68 | W8 |
| Comparative example 1 | 202 | 28.7 | 37.6 | 2.02 | W6 |
| Comparative example 2 | 185 | 26.9 | 33.7 | 1.87 | W4 |
The flyash that is modified by the method for the present invention with simple and mechanical modified obtained fine coal is impregnated or only done with weak base
Ash is applied in concrete, and the flyash that this method is modified can significantly improve the compression strength of concrete, Split-tension of Rolled
Intensity, impermeability.Therefore, the flyash that this method is modified can obtain large-scale application in concrete, can be effectively
Rejected fly ash pollution on the environment is reduced, is turned waste into wealth, with good economic efficiency, ecological benefits and society's effect
Benefit.
It, cannot the above content is specific/preferred embodiment further description made for the present invention is combined
Assert that the specific implementation of the present invention is confined to these explanations.General technical staff of the technical field of the invention is come
It says, without departing from the inventive concept of the premise, some replacements or modification can also be made to the embodiment that these have been described,
And these are substituted or variant all shall be regarded as belonging to protection scope of the present invention.
Claims (8)
1. a kind of modification processing method of concrete flyash, it is characterised in that：Include the following steps：
S1：Ball mill is added in flyash, is crushed, sieving obtains flyash fine powder；
S2：Sodium radio-phosphate,P-32 solution is added in above-mentioned flyash fine powder to impregnate, then washes with water flyash 2-4 times, it is thin to dry flyash
Powder；
S3：The flyash fine powder that step S2 is dried is added in batch mixer, is heated to 50-70 DEG C, powder is incorporated as under high-speed stirred
The mixed modifier of coal ash weight 1-3% stirs 10-20min, and the mixed modifier is by maleic rosin octyl phenol polyoxyethylene ether
Diester carboxyl acid natrium and fatty alcohol polyoxyethylene ether methyl-monosilane composition, discharging are dried, you can complete the modification of flyash.
2. the modification processing method of concrete flyash according to claim 1, it is characterised in that：Phosphoric acid described in step S2
The mass concentration of sodium solution is 5-10%.
3. the modification processing method of concrete flyash according to claim 2, it is characterised in that：Leaching described in step S2
The bubble time is 12-24h.
4. the modification processing method of concrete flyash according to claim 1, it is characterised in that：High speed described in step S3
Stirring is stirred in the case where rotating speed is 500-1000r/min.
5. the modification processing method of concrete flyash according to claim 1, it is characterised in that：The mixed modifier
The weight ratio of middle maleic rosin octyl phenol polyoxyethylene ether diester carboxyl acid natrium and fatty alcohol polyoxyethylene ether methyl-monosilane is 1:1-
3。
6. the modification processing method of concrete flyash according to claim 5, it is characterised in that：The fatty alcohol polyoxy
Vinethene methyl-monosilane is ethoxylated dodecyl alcohol methyl-monosilane, Dodecyl Polyoxyethylene Ether methyl-monosilane, stearyl alcohol polyoxy
One kind in vinethene methyl-monosilane.
7. the modification processing method of concrete flyash according to claim 1, it is characterised in that：The ball mill is sleeping
Formula ball mill.
8. the modification processing method of concrete flyash according to claim 1, it is characterised in that：It is crushed described in step S1
It is to be crushed to 40-100 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278431.2A CN108467213A (en) | 2018-03-31 | 2018-03-31 | The modification processing method of concrete flyash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278431.2A CN108467213A (en) | 2018-03-31 | 2018-03-31 | The modification processing method of concrete flyash |
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| Publication Number | Publication Date |
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| CN108467213A true CN108467213A (en) | 2018-08-31 |
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| CN201810278431.2A Withdrawn CN108467213A (en) | 2018-03-31 | 2018-03-31 | The modification processing method of concrete flyash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423031A (en) * | 2019-08-22 | 2019-11-08 | 绿材实业有限责任公司 | A kind of method of modifying improving flyash intensity |
-
2018
- 2018-03-31 CN CN201810278431.2A patent/CN108467213A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423031A (en) * | 2019-08-22 | 2019-11-08 | 绿材实业有限责任公司 | A kind of method of modifying improving flyash intensity |
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