CN103951333B - Cellular concrete prepared by a kind of road waste aggregate and preparation technology - Google Patents

Cellular concrete prepared by a kind of road waste aggregate and preparation technology Download PDF

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Publication number
CN103951333B
CN103951333B CN201410165495.3A CN201410165495A CN103951333B CN 103951333 B CN103951333 B CN 103951333B CN 201410165495 A CN201410165495 A CN 201410165495A CN 103951333 B CN103951333 B CN 103951333B
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parts
slag
admixture
water
aggregate
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CN201410165495.3A
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CN103951333A (en
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宋金博
曾周玉
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宋金博
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses cellular concrete and preparation technology prepared by a kind of road waste aggregate, belong to technical field of concrete, concrete component and quality proportioning are: regeneration aggregate 1000 ~ 1200 parts, 500 ~ 600 parts, slag, cement 250 ~ 300 parts, polypropylene film-fibre 2 ~ 6 parts, sand 100-200 part, 150 ~ 200 parts, water and admixture 2 ~ 6 parts; Wherein, admixture is made up of high efficiency water reducing agent 10 ~ 15 parts, wilkinite 10 ~ 15 parts, caoutchouc latex 10 ~ 15 parts, thin iron powder 10 ~ 15 parts, organic floculant 10 ~ 15 parts.Cellular concrete prepared by the present invention both met national requirements, also met the requirement of plant-growth, can be applied in the both sides of road widely, while protection, for greening environment, be significant.

Description

Cellular concrete prepared by a kind of road waste aggregate and preparation technology
Technical field
The present invention relates to a kind of cellular concrete and preparation technology, specifically the cellular concrete prepared of a kind of road waste aggregate and preparation technology, belong to technical field of concrete.
Background technology
Along with China's Economic development, Process of Urbanization Construction deepens continuously, and the road in city also in constantly expansion and rebuilding, thus creates a large amount of discarded concrete.Traditional treatment process is landfill or stacking, not only consumes the costs of erection such as a large amount of arable lands and refuse collection, and causes very large pressure to environmental improvement.
In order to alleviate above-mentioned pressure, adopt aggregate discarded concrete being directly used as cellular concrete to use more.Cellular concrete is a kind of concrete with special hole gap structure, is made up through special process of the gathering materials of specific grating, cement, water, admixture etc.Cellular concrete must have good ventilative, water permeability, makes the positions such as its road both sides being widely used in city, river course slope protection, roof and parking lot, occasionally can play and improve damp and hot exchange capacity, reduces the effects such as concrete material surface temperature simultaneously.
But, during using discarded concrete as the aggregate of cellular concrete, often there is the problem that aggregate intensity is low, water-intake rate is large, direct utilization can cause cellular concrete low strength, shrink the problems such as large, thus do not reach the requirement of cellular concrete, have impact on it and use normally.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides cellular concrete and preparation technology prepared by a kind of road waste aggregate, discarded concrete can be recycled and prepare cellular concrete as aggregate, improve performance and the intensity of the cellular concrete after preparation simultaneously, ensure that it uses normally.
To achieve these goals, the technical solution used in the present invention is: cellular concrete prepared by a kind of road waste aggregate, and concrete component and quality proportioning are: regeneration aggregate 1000 ~ 1200 parts, 500 ~ 600 parts, slag, cement 250 ~ 300 parts, polypropylene film-fibre 2 ~ 6 parts, sand 100-200 part, 150 ~ 200 parts, water and admixture 2 ~ 6 parts; Wherein, the component of described regeneration aggregate, slag and cement and mass ratio are 4:2:1; Described polypropylene fibre and the component of admixture and mass ratio are 1:1; Admixture is made up of high efficiency water reducing agent 10 ~ 15 parts, wilkinite 10 ~ 15 parts, caoutchouc latex 10 ~ 15 parts, thin iron powder 10 ~ 15 parts, organic floculant 10 ~ 15 parts.
Further, concrete component and quality proportioning are: regeneration aggregate 1000 parts, 500 parts, slag, cement 250 parts, polypropylene film-fibre 4 parts, sand 150 parts, 150 parts, water and admixture 4 parts.
Further, concrete component and quality proportioning are: regeneration aggregate 1080 parts, 540 parts, slag, cement 270 parts, polypropylene film-fibre 5 parts, sand 180 parts, 180 parts, water and admixture 5 parts.
Further, concrete component and quality proportioning are: regeneration aggregate 1200 parts, 600 parts, slag, cement 300 parts, polypropylene film-fibre 6 parts, sand 200 parts, 200 parts, water and admixture 6 parts.
Further, in admixture, component and the quality proportioning of described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are identical.
Further, in admixture, described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 12 parts.
Further, in admixture, described high efficiency water reducing agent is aliphatic high-efficiency water reducing agent.
For cellular concrete prepared by a kind of road waste aggregate of above-mentioned proposition, concrete preparation technology is as follows:
(1) raw material preparation:
1) preparation of regeneration aggregate: select the discarded concrete after road reformation, after being exposed to the sun in the sun 1-2 hour, uses artificial or mechanical hammering or cutting; After pulverizing the particle for 45-60cm particle diameter, after being again exposed to the sun 1-2 hour, carry out hammering or the cutting of secondary;
After pulverizing the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen, and sieved 2-3 time in the sieving time section of successively decreasing gradually;
After screening terminates, at the water glass solution of the surface smear 15%-20% of regeneration aggregate, and smear evenly, enter into behind regeneration aggregate inside completely until water glass solution, regeneration aggregate is transferred in kiln and carries out drying and maintenance process, take out after 10-15 days in placement.
2) preparation of slag: by the slag being main component with converter slag or open hearth slag, after using artificial or machinery to carry out precomminution, toast again, stop after its complete drying, subsequently the slag steel of bulk in the slag of vexed for heat rear efflorescence is separated with slag, first carry out the magnetic separation of bulk slag steel, then slag is after multiple stage crushing screening magnetic separation, extracts slag steel;
3) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component on demand and quality are carried out proportioning, water will be entered simultaneously and mix, and stop after the surperficial bubble-free of liquid to be mixed;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after process, slag, cement are put into stirred vessel according to the ratio row of 4:2:1 and mixes, and add polypropylene film-fibre, admixture that sand and 2/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, after stirring 40-60s, add again and stir with the water of above-mentioned raw materials quality proportioning, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixed in the preliminary compound formed in step (2), the water simultaneously adding equal in quality proportioning stirs, and forms final compound and discharging after stirring 80-100s;
(4) to deposit and reprocessing: take out after the final compound formed in step (3) being placed on local 10-15 days of shady and cool drying, at the silica flour slurries of its surface smear 5%-10%, after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
Further, in the preliminary mixing of step (2) raw material, under normal temperature state, the process regeneration aggregate of later half, slag, cement are put into stirred vessel according to the ratio row of 4:2:1 and mixes, and add half polypropylene film-fibre, admixture that sand and 1/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, stir after 40-60s, then add and stir with the water of above-mentioned raw materials quality proportioning; Material surface-stable to be mixed, after floating matter, again add the regeneration aggregate of remaining half, slag, cement to put into stirred vessel according to the ratio row of 4:2:1 and mix, and add half polypropylene film-fibre, admixture that sand and 1/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, stir after 40-60s, then add and stir with the water of above-mentioned raw materials quality proportioning, and obtain preliminary compound; Wherein, when second time stirs add water temperature be 40-50 DEG C.
Further, deposit in the process with reprocessing in step (4), take out after the final compound formed in step (3) is placed on shady and cool dry local 10-15 days, at the silica flour slurries of its surface smear 8%, the temperature of silica flour slurries is that 30-40 is after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
Contrast existing technology, in formula of the present invention, the component of regeneration aggregate, slag and cement and mass ratio are 4:2:1; Described polypropylene fibre and the component of admixture and mass ratio are 1:1; The proportioning of above-mentioned quality ensure that and can each component can fully to mix when mixing, so that control in preparation process, can not produce foreign material unnecessary too much.Meanwhile, in formula, add polypropylene fibre, improve the tensile strength of the cellular concrete prepared; Simultaneously, in formula, add admixture, comprise high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant, improve concrete pH-value, improve the performance such as ventilative, permeable of the cellular concrete prepared, and performance of condensing fast.
In raw-material preparation process, after regeneration aggregate pulverizes the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen simultaneously, and sieved 2-3 time in the sieving time section of successively decreasing gradually, guarantee the size of each particle of regeneration aggregate, be convenient to mixing, on this basis, water glass solution on the surface smear of regeneration aggregate, improves its surface and inner intensity; Secondly, in the proportioning of raw material, add slag, effectively increase the ultimate compression strength of later stage cellular concrete.
In the preparation process of raw material, be divided into twice mixing and add admixture, guaranteeing that it can better be fused in concrete, guarantee the stability of its performance.And be uniformly mixed at twice, in taking-up after drying, and again smear the silica flour slurries of 8% on its surface, guarantee ultimate compression strength and the stability on its surface further.
Prove through test of many times, in conjunction with formula of the present invention and preparation method, cellular concrete of the present invention meets and improves performance and the intensity of cellular concrete in national standard; Meanwhile, due to the use of admixture, change concrete pH-value, thus be the environment of plant needed for the growth of its pore interior, can be applicable to the ground such as green way bank protection and slope, roadside, there is the value of environmental protection widely.
Embodiment
Below in conjunction with specific embodiment and experimental data, the invention will be further described.
Basic proportioning of the present invention is: cellular concrete prepared by a kind of road waste aggregate, and concrete component and quality proportioning are: regeneration aggregate 1000 ~ 1200 parts, 500 ~ 600 parts, slag, cement 250 ~ 300 parts, polypropylene film-fibre 2 ~ 6 parts, sand 100-200 part, 150 ~ 200 parts, water and admixture 2 ~ 6 parts; Wherein, the component of described regeneration aggregate, slag and cement and mass ratio are 4:2:1; Described polypropylene fibre and the component of admixture and mass ratio are 1:1; Admixture is made up of high efficiency water reducing agent 10 ~ 15 parts, wilkinite 10 ~ 15 parts, caoutchouc latex 10 ~ 15 parts, thin iron powder 10 ~ 15 parts, organic floculant 10 ~ 15 parts.
Set forth further below in conjunction with experiment and experimental data:
Embodiment 1
Experimental period: on October 20th, 2013
Implement place: laboratory
Room temperature: normal temperature 20-25 DEG C
Experiment equipment: grating is the vibratory screening apparatus of 10 ~ 20, pulverizer, agitator
Experimental period: 30 days
Concrete component and the quality proportioning of raw material are: regeneration aggregate 1000kg, slag 500kg, cement 250kg, polypropylene film-fibre 4kg, sand 150kg, water 150kg and admixture 4kg, wherein, in admixture, high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 0.8kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, after being exposed to the sun in the sun 1-2 hour, using pulverizer to pulverize, after pulverizing the particle into 45-60cm particle diameter, after being again exposed to the sun 1-2 hour, carries out the pulverizing of secondary; After pulverizing the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen, and sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening terminates, at the water glass solution of the surface smear 15%-20% of regeneration aggregate, and smear evenly, enter into behind regeneration aggregate inside completely until water glass solution, regeneration aggregate is transferred in kiln and carries out drying and maintenance process, take out after 10-15 days in placement.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component on demand and quality are carried out proportioning, water will be entered simultaneously and mix, and stop after the surperficial bubble-free of liquid to be mixed;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after process, slag, cement are put into stirred vessel and mix, and add polypropylene film-fibre, admixture that sand and 2/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, after stirring 40-60s, add again and stir with the water of above-mentioned raw materials quality proportioning, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixed in the preliminary compound formed in step (2), the water simultaneously adding equal in quality proportioning stirs, and forms final compound and discharging after stirring 80-100s;
(4) to deposit and reprocessing: take out after the final compound formed in step (3) being placed on local 10-15 days of shady and cool drying, at the silica flour slurries of its surface smear 5%-10%, after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
Embodiment results of property
Note: what numbering A-C cellular concrete mainly met is water permeability, intensity index, to pH value no requirement (NR).What numbering D-F cellular concrete mainly met is plant natural disposition energy, and general requirement has certain ultimate compression strength, and pH value will meet the needs of plant-growth simultaneously.
Embodiment 2
Experimental period: on January 20th, 2014
Implement place: workshop
Room temperature: normal temperature 20-25 DEG C
Experiment equipment: grating is the vibratory screening apparatus of 5 ~ 15, pulverizer, agitator
Experimental period: 35 days
Concrete component and the quality proportioning of raw material are: regeneration aggregate 1080kg, slag 540kg, cement 270kg, polypropylene film-fibre 5kg, sand 180kg, water 180kg and admixture 5kg are wherein, in admixture, high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 0.83kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, after being exposed to the sun in the sun 1-2 hour, using pulverizer to pulverize, after pulverizing the particle into 45-60cm particle diameter, after being again exposed to the sun 1-2 hour, carries out the pulverizing of secondary; After pulverizing the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen, and sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening terminates, at the water glass solution of the surface smear 15%-20% of regeneration aggregate, and smear evenly, enter into behind regeneration aggregate inside completely until water glass solution, regeneration aggregate is transferred in kiln and carries out drying and maintenance process, take out after 10-15 days in placement.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component on demand and quality are carried out proportioning, water will be entered simultaneously and mix, and stop after the surperficial bubble-free of liquid to be mixed;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after process, slag, cement are put into stirred vessel and mix, and add polypropylene film-fibre, admixture that sand and 2/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, after stirring 40-60s, add again and stir with the water of above-mentioned raw materials quality proportioning, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixed in the preliminary compound formed in step (2), the water simultaneously adding equal in quality proportioning stirs, and forms final compound and discharging after stirring 80-100s;
(4) to deposit and reprocessing: take out after the final compound formed in step (3) being placed on local 10-15 days of shady and cool drying, at the silica flour slurries of its surface smear 5%-10%, after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
Embodiment results of property
Cellular concrete Ultimate compression strength/Mpa Folding strength/Mpa Coefficient of permeability (mm/s) PH value
A 25 2.6 1.3
B 24 2.9 1.6
C 24 3.4 2.3
D 18 8.2
E 18 8.3
F 18 8.1
Note: what numbering A-C cellular concrete mainly met is water permeability, intensity index, to pH value no requirement (NR).What numbering D-F cellular concrete mainly met is plant natural disposition energy, and general requirement has certain ultimate compression strength, and pH value will meet the needs of plant-growth simultaneously.
Embodiment 3
Experimental period: on February 20th, 2014
Implement place: laboratory
Room temperature: normal temperature 20-25 DEG C
Experiment equipment: grating is the vibratory screening apparatus of 5 ~ 15, pulverizer, agitator
Experimental period: 40 days
Concrete component and the quality proportioning of raw material are: regeneration aggregate 1200kg, slag 600kg, cement 300kg, polypropylene film-fibre 6kg, sand 200kg, water 200kg and admixture 6kg are wherein, in admixture, high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 1kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, after being exposed to the sun in the sun 1-2 hour, using pulverizer to pulverize, after pulverizing the particle into 45-60cm particle diameter, after being again exposed to the sun 1-2 hour, carries out the pulverizing of secondary; After pulverizing the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen, and sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening terminates, at the water glass solution of the surface smear 15%-20% of regeneration aggregate, and smear evenly, enter into behind regeneration aggregate inside completely until water glass solution, regeneration aggregate is transferred in kiln and carries out drying and maintenance process, take out after 10-15 days in placement.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component on demand and quality are carried out proportioning, water will be entered simultaneously and mix, and stop after the surperficial bubble-free of liquid to be mixed;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after process, slag, cement are put into stirred vessel and mix, and add polypropylene film-fibre, admixture that sand and 2/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, after stirring 40-60s, add again and stir with the water of above-mentioned raw materials quality proportioning, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixed in the preliminary compound formed in step (2), the water simultaneously adding equal in quality proportioning stirs, and forms final compound and discharging after stirring 80-100s;
(4) to deposit and reprocessing: take out after the final compound formed in step (3) being placed on local 10-15 days of shady and cool drying, at the silica flour slurries of its surface smear 5%-10%, after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
Embodiment results of property
Cellular concrete Ultimate compression strength/Mpa Folding strength/Mpa Coefficient of permeability (mm/s) PH value
A 26 2.6 1.3
B 24 2.9 1.6
C 25 3.4 2.3
D 15 8.1
E 18 8.3
F 18 8.4
Note: what numbering A-C cellular concrete mainly met is water permeability, intensity index, to pH value no requirement (NR).What numbering D-F cellular concrete mainly met is plant natural disposition energy, and general requirement has certain ultimate compression strength, and pH value will meet the needs of plant-growth simultaneously.
Shown in Binding experiment data, the present invention meets the standard of performance to cellular concrete that country formulates, and acid-basicity meets the growth of plant, and meanwhile, in the formula of invention, the component of regeneration aggregate, slag and cement and mass ratio are 4:2:1; Described polypropylene fibre and the component of admixture and mass ratio are 1:1; The proportioning of above-mentioned quality ensure that and can each component can fully to mix when mixing, and stable performance.
In sum, the present invention both met national requirements, also met the requirement of plant-growth, can be applied in the both sides of road widely, while protection, for greening environment, be significant.

Claims (9)

1. the cellular concrete prepared of a road waste aggregate, it is characterized in that, concrete component and quality proportioning are: regeneration aggregate 1000 ~ 1200 parts, 500 ~ 600 parts, slag, cement 250 ~ 300 parts, polypropylene film-fibre 2 ~ 6 parts, sand 100-200 part, 150 ~ 200 parts, water and admixture 2 ~ 6 parts;
Wherein, the component of described regeneration aggregate, slag and cement and mass ratio are 4:2:1; Described polypropylene film-fibre and the component of admixture and mass ratio are 1:1;
Described admixture is made up of high efficiency water reducing agent 10 ~ 15 parts, wilkinite 10 ~ 15 parts, caoutchouc latex 10 ~ 15 parts, thin iron powder 10 ~ 15 parts, organic floculant 10 ~ 15 parts;
In admixture, component and the quality proportioning of described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are identical.
2. the cellular concrete prepared of a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: regeneration aggregate 1000 parts, 500 parts, slag, cement 250 parts, polypropylene film-fibre 4 parts, sand 150 parts, 150 parts, water and admixture 4 parts.
3. the cellular concrete prepared of a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: regeneration aggregate 1080 parts, 540 parts, slag, cement 270 parts, polypropylene film-fibre 5 parts, sand 180 parts, 180 parts, water and admixture 5 parts.
4. the cellular concrete prepared of a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: regeneration aggregate 1200 parts, 600 parts, slag, cement 300 parts, polypropylene film-fibre 6 parts, sand 200 parts, 200 parts, water and admixture 6 parts.
5. the cellular concrete prepared of a kind of road waste aggregate according to claim 1, is characterized in that, in admixture, described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 12 parts.
6. the cellular concrete prepared of a kind of road waste aggregate according to claim 1 or 5, it is characterized in that, in admixture, described high efficiency water reducing agent is aliphatic high-efficiency water reducing agent.
7. the cellular concrete prepared of a kind of road waste aggregate according to claim 1, it is characterized in that, concrete preparation technology is as follows:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, after being exposed to the sun in the sun 1-2 hour, uses artificial or mechanical hammering or cutting; After pulverizing the particle for 45-60cm particle diameter, after being again exposed to the sun 1-2 hour, carry out hammering or the cutting of secondary;
After pulverizing the particle for 30-40cm particle diameter, adopt grating to be that 10 ~ 20 vibratory screening apparatuss screen, and sieved 2-3 time in the sieving time section of successively decreasing gradually;
After screening terminates, at the water glass solution of the surface smear 15%-20% of regeneration aggregate, and smear evenly, enter into behind regeneration aggregate inside completely until water glass solution, regeneration aggregate is transferred in kiln and carries out drying and maintenance process, take out after 10-15 days in placement;
2) preparation of slag: by the slag being main component with converter slag or open hearth slag, after using artificial or machinery to carry out precomminution, toast again, stop after its complete drying, the slag steel subsequently heat being boiled in a covered pot over a slow fire bulk in the slag of rear efflorescence is separated with slag, first carry out the magnetic separation of bulk slag steel, then slag is after multiple stage crushing screening magnetic separation, extracts slag steel;
3) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component on demand and quality are carried out proportioning, puts into water simultaneously and mix, stop after the surperficial bubble-free of liquid to be mixed;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after process, slag, cement are put into stirred vessel according to the ratio of 4:2:1 and mixes, and add polypropylene film-fibre, admixture that sand and 2/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, after stirring 40-60s, add again and stir with the water of above-mentioned raw materials quality proportioning, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixed in the preliminary compound formed in step (2), the water simultaneously adding equal in quality proportioning stirs, and forms final compound and discharging after stirring 80-100s;
(4) to deposit and reprocessing: take out after the final compound formed in step (3) being placed on local 10-15 days of shady and cool drying, at the silica flour slurries of its surface smear 5%-10%, after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
8. the cellular concrete prepared of a kind of road waste aggregate according to claim 7, it is characterized in that, in the preliminary mixing of step (2) raw material, under normal temperature state, the process regeneration aggregate of later half, slag, cement are put into stirred vessel according to the ratio of 4:2:1 and mixes, and add half polypropylene film-fibre, admixture that sand and 1/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, stir after 40-60s, then add and stir with the water of above-mentioned raw materials quality proportioning; Material surface-stable to be mixed, after floating matter, again add the regeneration aggregate of remaining half, slag, cement to put into stirred vessel according to the ratio of 4:2:1 and mix, and add half polypropylene film-fibre, admixture that sand and 1/3 mixes, add subsequently and stir with the water of above-mentioned raw materials quality proportioning, stir after 40-60s, then add and stir with the water of above-mentioned raw materials quality proportioning, and obtain preliminary compound; Wherein, when second time stirs add water temperature be 40-50 DEG C.
9. the cellular concrete prepared of a kind of road waste aggregate according to claim 7, it is characterized in that, deposit in the process with reprocessing in step (4), take out after the final compound formed in step (3) is placed on shady and cool dry local 10-15 days, at the silica flour slurries of its surface smear 8%, the temperature of silica flour slurries be 30-40 DEG C after it enters into compound completely, paved and after being placed on and being exposed to the sun 1-2 hour under the sun, formed cellular concrete.
CN201410165495.3A 2014-04-24 2014-04-24 Cellular concrete prepared by a kind of road waste aggregate and preparation technology CN103951333B (en)

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CN201410165495.3A CN103951333B (en) 2014-04-24 2014-04-24 Cellular concrete prepared by a kind of road waste aggregate and preparation technology

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Application Number Priority Date Filing Date Title
CN201410165495.3A CN103951333B (en) 2014-04-24 2014-04-24 Cellular concrete prepared by a kind of road waste aggregate and preparation technology
CN201610122912.5A CN105801037A (en) 2014-04-24 2014-04-24 Recycled concrete improving performances and strength of porous concrete in national standard
CN201610122913.XA CN105645855B (en) 2014-04-24 2014-04-24 The preparation technology of Recycled aerated concrete prepared by road waste aggregate

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Application Number Title Priority Date Filing Date
CN201610122912.5A Division CN105801037A (en) 2014-04-24 2014-04-24 Recycled concrete improving performances and strength of porous concrete in national standard
CN201610122913.XA Division CN105645855B (en) 2014-04-24 2014-04-24 The preparation technology of Recycled aerated concrete prepared by road waste aggregate

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