CN103553491A - Concrete mainly prepared from waste glass and preparation method thereof - Google Patents
Concrete mainly prepared from waste glass and preparation method thereof Download PDFInfo
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- CN103553491A CN103553491A CN201310485188.9A CN201310485188A CN103553491A CN 103553491 A CN103553491 A CN 103553491A CN 201310485188 A CN201310485188 A CN 201310485188A CN 103553491 A CN103553491 A CN 103553491A
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- 239000011521 glass Substances 0.000 title claims abstract description 92
- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002699 waste material Substances 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000004568 cement Substances 0.000 claims abstract description 40
- 239000002245 particle Substances 0.000 claims abstract description 22
- 239000004575 stone Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 12
- 239000006063 cullet Substances 0.000 claims description 64
- 239000003595 mist Substances 0.000 claims description 33
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 29
- 239000010703 silicon Substances 0.000 claims description 29
- 229910052710 silicon Inorganic materials 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 19
- 239000012535 impurity Substances 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000010334 sieve classification Methods 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 description 16
- 238000012216 screening Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000012615 aggregate Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011383 glass concrete Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
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Abstract
The invention discloses concrete mainly prepared from waste glass. The concrete is prepared from the following components in parts by weight: 10-30 parts of gel material, 30-40 parts of fine aggregate, 40-50 parts of coarse aggregate, 0.05-0.45 part of admixture and 3.8-16.5 parts of water, wherein the gel material comprises the following components in percentage by weight: 70-85wt% of cement, 10-20wt% of waste glass micropowder with the particle size being less than or equal to 30 micrometers and 5-10w% of silica dust; the fine aggregate is zone-II medium sand grading class waste glass powder, and the coarse aggregate is stones with the particle size being 5-16mm. The waste glass is utilized in the concrete to the maximum degree, and the cement has excellent compressive strength and mobility. The invention also provides a concrete preparation method.
Description
Technical field
The present invention relates to building material field, be specifically related to a kind of concrete, relate in particular to a kind of concrete that building castoff is main raw material of take, and preparation method thereof.
Background technology
Along with the continuous quickening of Urbanization in China, the building castoff problem thereupon producing more and more causes widely to be paid close attention to.Cullet is integral part important in building castoff, and because cullet is not biodegradable material, how effectively they are carried out to resource utilization recycling just becomes a problem anxious to be resolved.
At glass work, the recycling of cullet can reduce production energy consumption, diminishing raw material energy consumption, but due to cullet complicated component, require recycling before the removal of impurities of cullet, color separation to be required high, so cullet is very limited in the application of producing new glass.
Cullet is had to many advantages for concrete, as pozzolanic activity (glass powder), water-intake rate are extremely low, weather resistance is high, good fluidity etc., what is more important concrete requires looser to glass colour and foreign matter content, cullet utilization is very large, thereby cullet is imperative for Concrete Industry.
In prior art, have some and cullet is used for to research and the report of cement concrete.Publication number be in the patent documentation of CN102745929A, mentioned using Abrasive glass dust as adulterant for the production of concrete, alternative 30～50% cement, make discarded glass recovery utilization rate obtain raising to a certain degree, but the concrete performance obtaining is still not ideal enough.Publication number is to mention a kind of RPC of mixing ultra-fine simple glass powder in the patent documentation of CN103172323A, but in this concrete, the incorporation of glass powder seldom, can not effectively improve the recycling rate of discarded glass, and the RPC obtaining in this patent documentation also awaits in the performances such as mobility improving.
Summary of the invention
The object of the present invention is to provide a kind of concrete that discarded glass is main raw material of take, not only maximally utilised discarded glass, and this concrete has excellent ultimate compression strength and mobility.
Another object of the present invention is the concrete preparation method who provides described, the method has not only improved the utilization ratio of discarded glass to greatest extent, and can guarantee that the concrete obtaining has excellent strength property, can effectively reduce the possibility that alkali-aggregate reaction occurs simultaneously.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of concrete that cullet is main raw material of take is provided, and by weight, it is prepared from by the gelling material of 10～30 parts, the fine aggregate of 30～40 parts, the coarse aggregate of 40～50 parts, the admixture of 0.05～0.45 part and the water of 3.8～16.5 parts; Wherein, described gelling material, by weight percentage, is comprised of the cement of 70～85wt%, the cullet micro mist of particle diameter≤30 μ m of 10～20wt% and the silicon ash of 5～10wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
In preferred embodiments of the present invention, described take the concrete that cullet is main raw material, by weight, it is prepared from by the gelling material of 15～25 parts, the fine aggregate of 35～40 parts, the coarse aggregate of 45～50 parts, the admixture of 0.1～0.3 part and the water of 5.0～10.0 parts; Wherein, described gelling material, by weight percentage, is comprised of the cement of 70～75wt%, the cullet micro mist of particle diameter≤30 μ m of 15～20wt% and the silicon ash of 5～8wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
In the most preferred scheme of the present invention, described take the concrete that cullet is main raw material, by weight, it is prepared from by the gelling material of 20 parts, the fine aggregate of 35 parts, the coarse aggregate of 45 parts, the admixture of 0.24 part and the water of 8 parts; Wherein, described gelling material, by weight percentage, is comprised of the cement of 75wt%, the cullet micro mist of particle diameter≤30 μ m of 20wt% and the silicon ash of 5wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating, fineness modulus is 2.4～2.8; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
In concrete of the present invention, the cullet micro mist specific surface area of described particle diameter≤30 μ m is 550～900m
2/ kg; Preferably by brown and/or white cullet, made.
In concrete of the present invention, the cullet powder of described Ⅱ district medium sand grating is preferably made by green cullet.
In concrete of the present invention, described cement can be selected ordinary Portland cement, and label is P.O42.5.
In concrete of the present invention, the apparent density of described silicon ash is 2500～3000kg/m
3, specific surface area is 18～28 ㎡/g, and median size is 0.1～0.2 μ m, and amorphous silica content is 88～97%.
In concrete of the present invention, water-cement ratio is 0.38～0.55.
In concrete of the present invention, described admixture can be acceptable admixture in various concrete preparations, for example water reducer, preferably polycarboxylate water-reducer.
The present invention also provides the described concrete preparation method that cullet is main raw material of take, according to more than described ratio premix stirring 20s by all raw materials except admixture and water, in described ratio, add admixture and water again, more than stirring 120s, obtain the described concrete that cullet is main raw material of take.
The preferred preparation method of the present invention, comprises the following steps:
1) cullet is broken and remove after impurity, press colour sorting;
2) brown and/or white glass step 1) being sub-elected respectively grinding becomes particle diameter the glass micro mist of 30 μ m such as to be less than;
3) green glass thin broken step 1) being sub-elected, sieve classification then, is finally made into green glass material levels at different levels the glass fine aggregate of II district medium sand grating;
4) by cement, step 2) more than the glass micro mist that makes, silicon ash, step 3) the glass fine aggregate, the stone that make mix the pre-20s of stirring in described ratio, until mixing of materials is full and uniform, obtain premix material;
5) admixture and water are added in the premix material that step 4) obtains in described ratio, more than stirring 120s, until mixing of materials is full and uniform, obtain the described concrete that cullet is main raw material of take.
The shredder assembly of the broken process described in step 1) preferably uses cullet crusher.
The variegated sorting unit of cullet of the colour sorting operation described in step 1) is preferably the variegated separator of cullet.
Step 2) grinding device of described powder-grinding process is preferably ball mill or vibration mill.
Thin broken described in step 3) is preferably used cullet crusher, and vibratory screening apparatus is preferably used in described classification.
The concrete preparation method who is more preferably of the present invention, comprises following steps:
A, feed: discarded glass is transported in distributor hopper.
B, one-level deironing, screening, cloth: discarded glass in hopper is joined in distributor, with the deironing apparatus in distributor, the metallic impurity in discarded glass are rejected, with the screening plant in distributor, discarded glass is sieved, then by the discarded glass cloth having sieved on e Foerderanlage separately.Screening fine powder, medium glass out directly enters broken process, and thick glass enters manual sorting's removal of impurities operation.
C, manual sorting's removal of impurities: screening thick glass out in distributor is rejected to the impurity of large volume class in course of conveying by manual type.
D, fragmentation: with shredder assembly, will in distributor, sieve the thick glass breaking after fine powder, medium glass and manual sorting's removal of impurities out.
E, screening are gently assorted: with screening plant, frit after fragmentation is sieved, screen out the impurity of lightweight.
F, secondary deironing, the assorted sorting of pottery: with cullet impurity sorting equipment, reject metallic impurity and the opaque impurity of ceramic-like in frit.
G, colour sorting: frit is carried out to separation by color with the variegated sorting unit of cullet.
H, grinding: with grinding device, the colour sorting frit such as brown, white is out separated to grinding and become glass micro mist.
I, thin broken, classification, grating: with shredder assembly, by colour sorting green glass material thin broken out, then use screening plant sieve classification, finally frit levels at different levels are made into glass fine aggregate.
J, batching, stir in advance: the glass micro mist preparing and glass fine aggregate, stone, cement, silicon ash are added after in following ratio batching in stirrer more than pre-stirring 20s:
Total glue material (cement+glass micro mist+silicon ash), glass fine aggregate, stone total mass be in 100%, total glue material 10～30wt%, glass fine aggregate 30～40wt%, stone 40～50wt%.
Total glue material (cement+glass micro mist+silicon ash) total mass is in 100%, cement 70～85wt%, glass micro mist 10～20wt%, silicon ash 5～10wt%.
K stirs: more than load weighted admixture (0.5～1.5wt% of total glue material amount) and water (water-cement ratio 0.38～0.55) are joined and stirs 120s in the material being stirred in advance.
Compared with prior art, in the present invention, cullet is impregnated in the form of powder and fine aggregate simultaneously, to have replaced at high proportion cement and sandstone fine aggregate, finally with specific whole proportioning, has prepared concrete of the present invention together with other feed composition respectively.Concrete of the present invention and preparation method thereof has following beneficial effect:
1) the present invention first makes cullet activate micro powder and fine aggregate, then by it simultaneously for concrete, the concrete that to have obtained take cullet be main raw material, 40% left and right that makes the total unit weight of concrete is all cullet material, general technology has improved 20% volume relatively, with respect to the concrete in CN102745929A, improved 30% volume, concrete with respect to CN103172323A has improved 35% volume, both realized to greatest extent the regeneration of cullet, a large amount of concrete natural materials have been saved again, thereby maximally utilised cullet.
2) the present invention uses compared with fine work glass powder, green glass fine aggregate and silicon ash, has both met concrete requirement of strength, can prevent to greatest extent again the possibility that alkali-aggregate reaction occurs, and can also make concrete have excellent mobility.
The inventor finds through lot of experiments, and the glass micro mist of the particle diameter≤30 μ m being made by cullet pulverizing grinder, while replacing cement with ratio of the present invention, can significantly reduce concrete ASR swell value; Because its specific surface area is large, under identical water-cement ratio, can bring more excellent degree of mobilization for concrete simultaneously.Meanwhile, the inventor also finds, glass powder fine aggregate can produce synergy with the glass micro mist and the silicon ash three that replace cement under specified proportion of the present invention, for concrete brings more excellent intensity, particularly strength retention at high temperature has obvious progress than the concrete of mixing glass in prior art.In addition, known according to experiment, chromic oxide in green glass composition can effectively suppress ASR and expand, therefore the inventor has further obtained the rational proportion of green glass replacement fine aggregate on this basis by experiment sieving, concrete rate of expansion is further reduced, has fully guaranteed concrete safe handling.
In a word, concrete of the present invention is owing to having mixed glass powder, glass micro mist and silicon ash simultaneously, respectively to replace very at high proportion fine aggregate and cement, not only make the utilization ratio of cullet significantly improve, and three acts synergistically with specified proportion, for the performances such as concrete intensity of the present invention, degree of mobilization and rate of expansion have been brought remarkable improvement.
Accompanying drawing explanation
Fig. 1 is the concrete process flow sheet of a kind of discarded glass described in embodiment 1.
Embodiment
Embodiment 1:
A discarded glass concrete, preparation process is as follows:
A, discarded glass is transported in distributor hopper.
B, with screening distributor, carry out one-level deironing, screening, cloth.
C, thick glass are rejected the impurity of large volume class in course of conveying by manual type.
D, use cullet crusher are by the thick glass breaking after screening fine powder, medium glass and manual sorting's removal of impurities out.
E, with proportion sieve, frit after fragmentation is sieved, screen out the impurity of lightweight.
F, use cullet impurity sorter are rejected metallic impurity and the opaque impurity of ceramic-like in frit.
G, with the variegated separator of cullet, frit is carried out to separation by color.
H, with vibration mill, the colour sorting frit such as brown, white is out separated to grinding and become glass micro mist stand-by, glass grain size of micropowder≤30 μ m.
I, use cullet crusher are by colour sorting green glass material thin broken out, then with bolting, be classified into 0.16-0.315mm, 0.315-0.63mm, 0.63-1.25mm, 1.25-2.5mm Si Ge district, is finally made into sand glass fine aggregate in II district by frit levels at different levels.
J, batching, stirring in advance: the glass micro mist preparing and glass fine aggregate, stone, cement, silicon ash are added to the pre-30s of stirring in stirrer after preparing burden in following ratio:
Total glue material (cement+glass micro mist+silicon ash), glass fine aggregate, stone (particle diameter is 5～16mm) total mass be in 100%, total glue material 20wt%, glass fine aggregate 35wt%, stone 45wt%.
Total glue material (cement+glass micro mist+silicon ash) total mass is in 100%, cement 75wt%, glass micro mist 20wt%, silicon ash 5wt%.
K stirs: load weighted admixture (1.5wt% of total glue material amount) is joined in the material being stirred in advance and stirs 120s with water (water-cement ratio 0.38).
2, discarded glass concrete performance:
Go out the machine slump/divergence 230/600, mobility is fabulous, 3d average intensity 16.8Mpa, 28d average intensity 45.2Mpa.
Embodiment 2
The concrete that the cullet of take is main raw material, is prepared according to the method for embodiment 1, and just step J and K are as follows:
J, batching, stirring in advance: the glass micro mist preparing and glass fine aggregate, stone, cement, silicon ash are added to the pre-30s of stirring in stirrer after preparing burden in following ratio:
Total glue material (cement+glass micro mist+silicon ash), glass fine aggregate, stone (particle diameter is 5～16mm) total mass be in 100%, total glue material 10wt%, glass fine aggregate 40wt%, stone 50wt%.
Total glue material (cement+glass micro mist+silicon ash) total mass is in 100%, cement 70wt%, glass micro mist 20wt%, silicon ash 10wt%.
K stirs: load weighted admixture (1.2wt% of total glue material amount) is joined in the material being stirred in advance and stirs 120s with water (water-cement ratio 0.41).
The cullet concrete performance obtaining is as follows:
Go out the machine slump/divergence 220/650, mobility is fabulous, 3d average intensity 15.1Mpa, 28d average intensity 41.5Mpa.
Embodiment 3
The concrete that the cullet of take is main raw material, is prepared according to the method for embodiment 1, and just step J and K are as follows:
J, batching, stirring in advance: the glass micro mist preparing and glass fine aggregate, stone, cement, silicon ash are added to the pre-30s of stirring in stirrer after preparing burden in following ratio:
Total glue material (cement+glass micro mist+silicon ash), glass fine aggregate, stone (particle diameter is 5～16mm) total mass be in 100%, total glue material 25wt%, glass fine aggregate 33wt%, stone 42wt%.
Total glue material (cement+glass micro mist+silicon ash) total mass is in 100%, cement 78wt%, glass micro mist 17wt%, silicon ash 5wt%.
K stirs: load weighted admixture (2.0wt% of total glue material amount) is joined in the material being stirred in advance and stirs 120s with water (water-cement ratio 0.35).
The cullet concrete performance obtaining is as follows:
Go out the machine slump/divergence 220/550, mobility is fabulous, 3d average intensity 22.7Mpa, 28d average intensity 62.8Mpa.
Embodiment 4
The concrete of concrete prepared by the embodiment of the present invention 3 methods and the application 1-2 in CN102745929A table 2 and application 1-3 carries out Performance Ratio, and result is as shown in table 1 below.
Table 1
Table 3 shows that concrete performance of the present invention is all better than the concrete of CN102745929A.
Embodiment 5
Concrete prepared by the embodiment of the present invention 1 method and the concrete of CN103172323A embodiment 8 and 9 carry out Performance Ratio, and result is as shown in table 2 below.
Table 2
Table 2 shows that concrete work performance of the present invention and ultimate compression strength are significantly better than the concrete of CN103172323A.
Claims (10)
1. take the concrete that cullet is main raw material for one kind, it is characterized in that, by weight, it is prepared from by the gelling material of 10～30 parts, the fine aggregate of 30～40 parts, the coarse aggregate of 40～50 parts, the admixture of 0.05～0.45 part and the water of 3.8～16.5 parts; Wherein, described gelling material by weight percentage, is comprised of the cement of 70～85wt%, the cullet micro mist of particle diameter≤30 μ m of 10～20wt% and the silicon ash of 5～10wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
2. concrete claimed in claim 1, is characterized in that: by weight, it is prepared from by the gelling material of 15～25 parts, the fine aggregate of 35～40 parts, the coarse aggregate of 45～50 parts, the admixture of 0.1～0.3 part and the water of 5.0～10.0 parts; Wherein, described gelling material, by weight percentage, is comprised of the cement of 70～75wt%, the cullet micro mist of particle diameter≤30 μ m of 15～20wt% and the silicon ash of 5～8wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
3. concrete claimed in claim 1, is characterized in that: by weight, it is prepared from by the gelling material of 20 parts, the fine aggregate of 35 parts, the coarse aggregate of 45 parts, the admixture of 0.24 part and the water of 8 parts; Wherein, described gelling material, by weight percentage, is comprised of the cement of 75wt%, the cullet micro mist of particle diameter≤30 μ m of 20wt% and the silicon ash of 5wt%; The cullet powder of described fine aggregate ShiⅡ district medium sand grating, fineness modulus is 2.4～2.8; Described coarse aggregate is that particle diameter is the stone of 5～16mm.
4. any one concrete described in claim 1-3, is characterized in that: the cullet micro mist specific surface area of described particle diameter≤30 μ m is 550～900m
2/ kg, is made by brown and/or white cullet.
5. any one concrete described in claim 1-3, is characterized in that: the cullet powder of described Ⅱ district medium sand grating is made by green cullet.
6. any one concrete described in claim 1-3, is characterized in that: described cement is ordinary Portland cement, and label is P.O42.5.
7. any one concrete described in claim 1-3, is characterized in that: the apparent density of described silicon ash is 2500～3000kg/m
3, specific surface area is 18～28m
2/ g, median size is 0.1～0.2 μ m, amorphous silica content is 88～97%.
8. any one concrete described in claim 1-3, is characterized in that: described admixture is water reducer.
9. claimed in claim 1ly take the concrete preparation method that cullet is main raw material, according to more than described ratio premix stirring 20s by all raw materials except admixture and water, in described ratio, add admixture and water again, more than stirring 120s, obtain the described concrete that cullet is main raw material of take.
10. preparation method claimed in claim 9, comprises the following steps:
1) cullet is broken and remove after impurity, press colour sorting;
2) brown and/or white glass step 1) being sub-elected respectively grinding becomes particle diameter to be less than or equal to the glass micro mist of 30 μ m;
3) green glass thin broken step 1) being sub-elected, sieve classification then, is finally made into green glass material levels at different levels the glass fine aggregate of II district medium sand grating;
4) by cement, step 2) more than the glass micro mist that makes, silicon ash, step 3) the glass fine aggregate, the stone that make mix the pre-20s of stirring in described ratio, until mixing of materials is full and uniform, obtain premix material;
5) admixture and water are added in the premix material that step 4) obtains in described ratio, more than stirring 120s, until mixing of materials is full and uniform, obtain the described concrete that cullet is main raw material of take.
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| CN201310485188.9A CN103553491B (en) | 2013-10-16 | 2013-10-16 | A kind of take discarded glass as concrete of main raw material and preparation method thereof |
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| CN201310485188.9A CN103553491B (en) | 2013-10-16 | 2013-10-16 | A kind of take discarded glass as concrete of main raw material and preparation method thereof |
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| CN104355579A (en) * | 2014-11-10 | 2015-02-18 | 汪洋 | Method for preparing concrete from abandoned glass and glass particle screening machine used in same |
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| CN103086655A (en) * | 2011-11-04 | 2013-05-08 | 香港理工大学 | Method for preparing concrete brick |
| CN103172323A (en) * | 2012-12-28 | 2013-06-26 | 北京新航建材集团有限公司 | Superfine common glass powder doped active powder concrete and preparation method thereof |
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