CN103951333A - Porous concrete prepared from waste road concrete aggregate and preparation process - Google Patents

Porous concrete prepared from waste road concrete aggregate and preparation process Download PDF

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Publication number
CN103951333A
CN103951333A CN201410165495.3A CN201410165495A CN103951333A CN 103951333 A CN103951333 A CN 103951333A CN 201410165495 A CN201410165495 A CN 201410165495A CN 103951333 A CN103951333 A CN 103951333A
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parts
slag
water
concrete
aggregate
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CN201410165495.3A
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CN103951333B (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 a porous concrete prepared from a waste road concrete aggregate and a preparation process, belonging to the technical field of concrete. The porous concrete specifically comprises the following components in parts by mass: 1000-1200 parts of a recycled aggregate, 500-600 parts of steel slag, 250-300 parts of cement, 2-6 parts of polypropylene film-broken fibers, 100-200 parts of sand, 150-200 parts of water and 2-6 parts of an additive, wherein the additive consists of 10-15 parts of a high-efficiency water reducing agent, 10-15 parts of bentonite, 10-15 parts of natural rubber latex, 10-15 parts of fine iron powder and 10-15 parts of an organic flocculating agent. The porous concrete prepared by the process disclosed by the invention not only meets the national requirements but also meets the requirements of plant growth, and can be widely applied to two sides of a road for protecting the road as well as afforesting the environment, so the porous concrete has a great significance.

Description

Cellular concrete and preparation technology prepared by a kind of road waste aggregate
Technical field
The present invention relates to a kind of cellular concrete and preparation technology, cellular concrete and preparation technology that specifically prepared by a kind of road waste aggregate, belong to concrete technology field.
Background technology
Along with China's Economic development, Process of Urbanization Construction deepens continuously, and the road in city is also constantly being expanded and rebuilding, thereby has produced a large amount of discarded concretes.Traditional treatment process is landfill or stacking, has not only consumed the costs of erection such as a large amount of arable lands and refuse collection, and has caused very large pressure to environmental improvement.
In order to alleviate above-mentioned pressure, the aggregate that many employings are directly used as cellular concrete by discarded concrete is used.Cellular concrete is a kind of concrete with special hole gap structure, by the gathering materials of specific grating, cement, water, admixture etc., through special process, is made.Cellular concrete must have good ventilative, water permeability, makes its position such as road both sides, river course slope protection, roof and parking lot that are widely used in city, can occasionally play and improve damp and hot exchange capacity, reduces the effects such as concrete material surface temperature simultaneously.
Yet, during aggregate using discarded concrete as cellular concrete, often have the problem that aggregate intensity is low, water-intake rate is large, directly utilization can cause cellular concrete low strength, shrink the problems such as large, thereby do not reach the requirement of cellular concrete, affected it and used normally.
Summary of the invention
The problem existing for above-mentioned prior art, the invention provides cellular concrete and preparation technology prepared by a kind of road waste aggregate, discarded concrete can be recycled and prepared cellular concrete as aggregate, improve performance and the intensity of the cellular concrete after preparation simultaneously, guarantee 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: 2~6 parts of 1000~1200 parts of regeneration aggregates, 500~600 parts, slag, 250~300 parts of cement, 2~6 parts of polypropylene film-fibres, sand 100-200 part, 150~200 parts, water and admixtures; 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 comprised of 10~15 parts of 10~15 parts of high efficiency water reducing agents, 10~15 parts of wilkinites, 10~15 parts of caoutchouc latex, 10~15 parts of thin iron powders, organic floculants.
Further, concrete component and quality proportioning are: 4 parts of 1000 parts of regeneration aggregates, 500 parts, slag, 250 parts of cement, 4 parts of polypropylene film-fibres, 150 parts of sands, 150 parts, water and admixtures.
Further, concrete component and quality proportioning are: 5 parts of 1080 parts of regeneration aggregates, 540 parts, slag, 270 parts of cement, 5 parts of polypropylene film-fibres, 180 parts of sands, 180 parts, water and admixtures.
Further, concrete component and quality proportioning are: 6 parts of 1200 parts of regeneration aggregates, 600 parts, slag, 300 parts of cement, 6 parts of polypropylene film-fibres, 200 parts of sands, 200 parts, water and admixtures.
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.
The cellular concrete of preparing for 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, be exposed to the sun in the sun after 1-2 hour, use artificial or mechanical hammering or cutting; Pulverize after the particle for 45-60cm particle diameter, be again exposed to the sun after 1-2 hour, carry out hammering or the cutting of secondary;
Pulverize after the particle for 30-40cm particle diameter, adopting grating is that 10~20 vibratory screening apparatuss screen, and is sieved 2-3 time in the sieving time section of successively decreasing gradually;
After screening finishes, on the surface of regeneration aggregate, smear the water glass solution of 15%-20%, and smear evenly, after water glass solution enters into regeneration aggregate inside completely, regeneration aggregate is transferred in kiln and is dried and maintenance processing, after placing 10-15 days, take out.
2) preparation of slag: will take the slag that converter slag or open hearth slag be main component, use artificial or machinery to carry out after precomminution, toast again, after its complete drying, stop, subsequently that the slag steel of bulk in the slag of the vexed rear efflorescence of heat is separated with slag, first carry out the magnetic separation of bulk slag steel, then slag, 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 and quality are on demand carried out to proportioning, will enter water simultaneously and mix, the surface of liquid to be mixed stops after without bubble;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after processing, slag, cement are put into stirred vessel and mixed according to the ratio row of 4:2:1, and the admixture that adds polypropylene film-fibre, sand and 2/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, add again with the water of above-mentioned raw materials quality proportioning and stir, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixing in the preliminary compound forming in step (2), add the water of equal in quality proportioning to stir simultaneously, stir 80-100s and form final compound discharging afterwards;
(4) deposit and process again: after the final compound forming in step (3) is placed on to shady and cool dry local 10-15 days, taking out, on its surface, smear the silica flour slurries of 5%-10%, until it, enter into after compound completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form cellular concrete.
Further, in the preliminary mixing of step (2) raw material, under normal temperature state, the regeneration aggregate, slag, cement of processing later half are put into stirred vessel and mixed according to the ratio row of 4:2:1, and the admixture that adds half polypropylene film-fibre, sand and 1/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, then add with the water of above-mentioned raw materials quality proportioning and stir; Material surface-stable to be mixed, after floating matter, again add remaining half regeneration aggregate, slag, cement to put into stirred vessel and mix according to the ratio row of 4:2:1, and the admixture that adds half polypropylene film-fibre, sand and 1/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, then add with the water of above-mentioned raw materials quality proportioning and stir, and obtain preliminary compound; While wherein, stirring for the second time to add the temperature of water be 40-50 ℃.
Further, step (4) deposit with the process of processing again in, after being placed on to shady and cool dry local 10-15 days, takes out the final compound forming in step (3), on its surface, smear 8% silica flour slurries, the temperature of silica flour slurries is that 30-40 enters into after compound until it completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form 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 has been guaranteed can each component can fully mix when mixing, so that control in preparation process, can not produce too many unnecessary foreign material.Meanwhile, in formula, add polypropylene fibre, improve the tensile strength of the cellular concrete of preparing; Simultaneously, in formula, add admixture, comprised high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant, improved concrete pH-value, improved the performance such as ventilative, permeable of the cellular concrete prepared, and the performance of condensing fast.
In raw-material preparation process, regeneration aggregate is pulverized after the particle for 30-40cm particle diameter, adopt grating is 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 mix, on this basis, on the surface of regeneration aggregate, be coated with and spread water glass solution, improve its surface and inner intensity; Secondly, in the proportioning of raw material, increase slag, effectively increased the ultimate compression strength of later stage cellular concrete.
In the preparation process of raw material, be divided into twice mixing and add admixture, guarantee that it can better be fused in concrete, guarantees the stability of its performance.And at twice, be uniformly mixed, after drying, taking out, and on its surface, again smearing 8% silica flour slurries, further guarantee ultimate compression strength and stability that it is surperficial.
Through test of many times, prove, in conjunction with formula of the present invention and preparation method, cellular concrete of the present invention meets and has improved performance and the intensity of cellular concrete in national standard; Meanwhile, due to the use of admixture, changed concrete pH-value, thus be plant at the required environment of its hole growth inside, can be applicable to afforest the ground such as road 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: 2~6 parts of 1000~1200 parts of regeneration aggregates, 500~600 parts, slag, 250~300 parts of cement, 2~6 parts of polypropylene film-fibres, sand 100-200 part, 150~200 parts, water and admixtures; 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 comprised of 10~15 parts of 10~15 parts of high efficiency water reducing agents, 10~15 parts of wilkinites, 10~15 parts of caoutchouc latex, 10~15 parts of thin iron powders, organic floculants.
Below in conjunction with experiment and experimental data, further set forth:
Embodiment 1
Experimental period: on October 20th, 2013
Implement place: laboratory
Room temperature: normal temperature 20-25 ℃
Experiment equipment: the vibratory screening apparatus that grating is 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 0.8 kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, be exposed to the sun in the sun after 1-2 hour, use pulverizer to pulverize, pulverize after the particle into 45-60cm particle diameter, be again exposed to the sun after 1-2 hour, carry out the pulverizing of secondary; Pulverize after the particle for 30-40cm particle diameter, adopting grating is that 10~20 vibratory screening apparatuss screen, and is sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening finishes, on the surface of regeneration aggregate, smear the water glass solution of 15%-20%, and smear evenly, after water glass solution enters into regeneration aggregate inside completely, regeneration aggregate is transferred in kiln and is dried and maintenance processing, after placing 10-15 days, take out.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component and quality are on demand carried out to proportioning, will enter water simultaneously and mix, the surface of liquid to be mixed stops after without bubble;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate, slag, cement after processing are put into stirred vessel and mixed, and the admixture that adds polypropylene film-fibre, sand and 2/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, add again with the water of above-mentioned raw materials quality proportioning and stir, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixing in the preliminary compound forming in step (2), add the water of equal in quality proportioning to stir simultaneously, stir 80-100s and form final compound discharging afterwards;
(4) deposit and process again: after the final compound forming in step (3) is placed on to shady and cool dry local 10-15 days, taking out, on its surface, smear the silica flour slurries of 5%-10%, until it, enter into after compound completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form cellular concrete.
Embodiment results of property
Note: what numbering A-C cellular concrete mainly met is water permeability, intensity index, to the no requirement (NR) of pH value.What numbering D-F cellular concrete mainly met is to 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 ℃
Experiment equipment: the vibratory screening apparatus that grating is 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 0.83 kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, be exposed to the sun in the sun after 1-2 hour, use pulverizer to pulverize, pulverize after the particle into 45-60cm particle diameter, be again exposed to the sun after 1-2 hour, carry out the pulverizing of secondary; Pulverize after the particle for 30-40cm particle diameter, adopting grating is that 10~20 vibratory screening apparatuss screen, and is sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening finishes, on the surface of regeneration aggregate, smear the water glass solution of 15%-20%, and smear evenly, after water glass solution enters into regeneration aggregate inside completely, regeneration aggregate is transferred in kiln and is dried and maintenance processing, after placing 10-15 days, take out.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component and quality are on demand carried out to proportioning, will enter water simultaneously and mix, the surface of liquid to be mixed stops after without bubble;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate, slag, cement after processing are put into stirred vessel and mixed, and the admixture that adds polypropylene film-fibre, sand and 2/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, add again with the water of above-mentioned raw materials quality proportioning and stir, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixing in the preliminary compound forming in step (2), add the water of equal in quality proportioning to stir simultaneously, stir 80-100s and form final compound discharging afterwards;
(4) deposit and process again: after the final compound forming in step (3) is placed on to shady and cool dry local 10-15 days, taking out, on its surface, smear the silica flour slurries of 5%-10%, until it, enter into after compound completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form 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 the no requirement (NR) of pH value.What numbering D-F cellular concrete mainly met is to 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 ℃
Experiment equipment: the vibratory screening apparatus that grating is 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 1 kg.
Experimentation:
(1) raw material preparation: the 1) preparation of regeneration aggregate: select the discarded concrete after road reformation, be exposed to the sun in the sun after 1-2 hour, use pulverizer to pulverize, pulverize after the particle into 45-60cm particle diameter, be again exposed to the sun after 1-2 hour, carry out the pulverizing of secondary; Pulverize after the particle for 30-40cm particle diameter, adopting grating is that 10~20 vibratory screening apparatuss screen, and is sieved 2-3 time in the sieving time section of successively decreasing gradually; After screening finishes, on the surface of regeneration aggregate, smear the water glass solution of 15%-20%, and smear evenly, after water glass solution enters into regeneration aggregate inside completely, regeneration aggregate is transferred in kiln and is dried and maintenance processing, after placing 10-15 days, take out.
2) preparation of admixture: high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant component and quality are on demand carried out to proportioning, will enter water simultaneously and mix, the surface of liquid to be mixed stops after without bubble;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate, slag, cement after processing are put into stirred vessel and mixed, and the admixture that adds polypropylene film-fibre, sand and 2/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, add again with the water of above-mentioned raw materials quality proportioning and stir, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixing in the preliminary compound forming in step (2), add the water of equal in quality proportioning to stir simultaneously, stir 80-100s and form final compound discharging afterwards;
(4) deposit and process again: after the final compound forming in step (3) is placed on to shady and cool dry local 10-15 days, taking out, on its surface, smear the silica flour slurries of 5%-10%, until it, enter into after compound completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form 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 the no requirement (NR) of pH value.What numbering D-F cellular concrete mainly met is to 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 experimental 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 has been guaranteed can each component can fully mix when mixing, and stable performance.
In sum, the present invention had both met national requirements, also met the requirement of plant-growth, can be applied in widely the both sides of road, in the time of protection, for greening environment, was significant.

Claims (10)

1. a cellular concrete prepared by road waste aggregate, it is characterized in that, concrete component and quality proportioning are: 2~6 parts of 1000~1200 parts of regeneration aggregates, 500~600 parts, slag, 250~300 parts of cement, 2~6 parts of polypropylene film-fibres, sand 100-200 part, 150~200 parts, water and admixtures;
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;
Described admixture is comprised of 10~15 parts of 10~15 parts of high efficiency water reducing agents, 10~15 parts of wilkinites, 10~15 parts of caoutchouc latex, 10~15 parts of thin iron powders, organic floculants.
2. the cellular concrete that prepared by a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: 4 parts of 1000 parts of regeneration aggregates, 500 parts, slag, 250 parts of cement, 4 parts of polypropylene film-fibres, 150 parts of sands, 150 parts, water and admixtures.
3. the cellular concrete that prepared by a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: 5 parts of 1080 parts of regeneration aggregates, 540 parts, slag, 270 parts of cement, 5 parts of polypropylene film-fibres, 180 parts of sands, 180 parts, water and admixtures.
4. the cellular concrete that prepared by a kind of road waste aggregate according to claim 1, it is characterized in that, concrete component and quality proportioning are: 6 parts of 1200 parts of regeneration aggregates, 600 parts, slag, 300 parts of cement, 6 parts of polypropylene film-fibres, 200 parts of sands, 200 parts, water and admixtures.
5. the cellular concrete that prepared by a kind of road waste aggregate according to claim 1, it is characterized in that, in admixture, component and the quality proportioning of described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are identical.
6. the cellular concrete that prepared by a kind of road waste aggregate according to claim 5, is characterized in that, in admixture, described high efficiency water reducing agent, wilkinite, caoutchouc latex, thin iron powder, organic floculant are 12 parts.
7. the cellular concrete that according to claim 1 or 5 prepared by a kind of road waste aggregate, is characterized in that, in admixture, described high efficiency water reducing agent is aliphatic high-efficiency water reducing agent.
8. the cellular concrete that prepared by a kind of road waste aggregate according to claim 1, 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, be exposed to the sun in the sun after 1-2 hour, use artificial or mechanical hammering or cutting; Pulverize after the particle for 45-60cm particle diameter, be again exposed to the sun after 1-2 hour, carry out hammering or the cutting of secondary;
Pulverize after the particle for 30-40cm particle diameter, adopting grating is that 10~20 vibratory screening apparatuss screen, and is sieved 2-3 time in the sieving time section of successively decreasing gradually;
After screening finishes, on the surface of regeneration aggregate, smear the water glass solution of 15%-20%, and smear evenly, after water glass solution enters into regeneration aggregate inside completely, regeneration aggregate is transferred in kiln and is dried and maintenance processing, after placing 10-15 days, take out.
2) preparation of slag: will take the slag that converter slag or open hearth slag be main component, use artificial or machinery to carry out after precomminution, toast again, after its complete drying, stop, subsequently that the slag steel of bulk in the slag of the vexed rear efflorescence of heat is separated with slag, first carry out the magnetic separation of bulk slag steel, then slag, 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 and quality are on demand carried out to proportioning, will enter water simultaneously and mix, the surface of liquid to be mixed stops after without bubble;
(2) the preliminary mixing of raw material: under normal temperature state, regeneration aggregate after processing, slag, cement are put into stirred vessel and mixed according to the ratio row of 4:2:1, and the admixture that adds polypropylene film-fibre, sand and 2/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, add again with the water of above-mentioned raw materials quality proportioning and stir, obtain preliminary compound;
(3) discharging: under normal temperature state, add the 1/3 remaining admixture mixing in the preliminary compound forming in step (2), add the water of equal in quality proportioning to stir simultaneously, stir 80-100s and form final compound discharging afterwards;
(4) deposit and process again: after the final compound forming in step (3) is placed on to shady and cool dry local 10-15 days, taking out, on its surface, smear the silica flour slurries of 5%-10%, until it, enter into after compound completely, under being paved and be placed on the sun, be exposed to the sun after 1-2 hour, form cellular concrete.
9. the cellular concrete that prepared by a kind of road waste aggregate according to claim 8, it is characterized in that, in the preliminary mixing of step (2) raw material, under normal temperature state, the regeneration aggregate, slag, cement of processing later half are put into stirred vessel and mixed according to the ratio row of 4:2:1, and the admixture that adds half polypropylene film-fibre, sand and 1/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, then add with the water of above-mentioned raw materials quality proportioning and stir; Material surface-stable to be mixed, after floating matter, again add remaining half regeneration aggregate, slag, cement to put into stirred vessel and mix according to the ratio row of 4:2:1, and the admixture that adds half polypropylene film-fibre, sand and 1/3 to mix, add subsequently with the water of above-mentioned raw materials quality proportioning and stir, after stirring 40-60s, then add with the water of above-mentioned raw materials quality proportioning and stir, and obtain preliminary compound; While wherein, stirring for the second time to add the temperature of water be 40-50 ℃.
10. the cellular concrete that prepared by a kind of road waste aggregate according to claim 8, it is characterized in that, step (4) deposit with the process of processing again in, after being placed on to shady and cool dry local 10-15 days, takes out the final compound forming in step (3), on its surface, smear 8% silica flour slurries, the temperature of silica flour slurries is that 30-40 enters into after compound completely until it, is exposed to the sun after 1-2 hour under being paved and be placed on the sun, forms cellular concrete.
CN201410165495.3A 2014-04-24 2014-04-24 Cellular concrete prepared by a kind of road waste aggregate and preparation technology Expired - Fee Related CN103951333B (en)

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CN106186945A (en) * 2016-07-12 2016-12-07 广东工业大学 A kind of regeneration concrete and preparation method thereof
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CN106316302A (en) * 2016-08-30 2017-01-11 江苏美城建筑规划设计院有限公司 C20-level self-compacting concrete with steel slag and recycled aggregates and preparation method of C20-level self-compacting concrete
CN107602008A (en) * 2017-08-30 2018-01-19 海南职业技术学院 A kind of plant base composite permeable municipal works ground pavement material
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CN112010626A (en) * 2020-09-14 2020-12-01 陈斌 Self-compacting freeze-thaw-resistant concrete and preparation method thereof

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CN104446233A (en) * 2014-11-05 2015-03-25 上海市建筑科学研究院(集团)有限公司 Polypropylene film-broken fiber pervious concrete and preparation method thereof
CN105389457A (en) * 2015-09-21 2016-03-09 中国电建集团西北勘测设计研究院有限公司 Method for determining transient temperature of air pre-cooled and pre-heated concrete aggregates
CN105389457B (en) * 2015-09-21 2018-04-06 中国电建集团西北勘测设计研究院有限公司 A kind of determination method of air precooling, preheating aggregate transient temperature
CN105271996A (en) * 2015-10-16 2016-01-27 广西巨邦科技有限公司 Concrete
CN105670176A (en) * 2016-03-21 2016-06-15 深圳市新纶科技股份有限公司 PVC (polyvinyl chloride) sole material suitable for high-temperature steam sterilization and production method thereof
CN106186945A (en) * 2016-07-12 2016-12-07 广东工业大学 A kind of regeneration concrete and preparation method thereof
CN106186885A (en) * 2016-07-20 2016-12-07 南通天蓝环保能源成套设备有限公司 A kind of technique of construction refuse regenerated aggregate pervious concrete
CN106316302A (en) * 2016-08-30 2017-01-11 江苏美城建筑规划设计院有限公司 C20-level self-compacting concrete with steel slag and recycled aggregates and preparation method of C20-level self-compacting concrete
CN107631971B (en) * 2017-07-31 2019-08-06 中南林业科技大学 A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device
CN107631971A (en) * 2017-07-31 2018-01-26 中南林业科技大学 A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device
CN107602008A (en) * 2017-08-30 2018-01-19 海南职业技术学院 A kind of plant base composite permeable municipal works ground pavement material
CN107602008B (en) * 2017-08-30 2019-03-08 海南职业技术学院 A kind of plant base composite permeable municipal works ground pavement material
CN108314369A (en) * 2018-05-11 2018-07-24 安徽砼宇特构科技有限公司 A kind of steel carbon mixed-fiber reinforced concrete material and preparation method thereof
CN110128060A (en) * 2019-04-28 2019-08-16 南通昆腾新材料科技有限公司 A kind of porous light type concrete and preparation method thereof
CN112010626A (en) * 2020-09-14 2020-12-01 陈斌 Self-compacting freeze-thaw-resistant concrete and preparation method thereof

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