CN106007556A - Pumpable high-strength recycled concrete and preparation technology thereof - Google Patents
Pumpable high-strength recycled concrete and preparation technology thereof Download PDFInfo
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- CN106007556A CN106007556A CN201610319767.XA CN201610319767A CN106007556A CN 106007556 A CN106007556 A CN 106007556A CN 201610319767 A CN201610319767 A CN 201610319767A CN 106007556 A CN106007556 A CN 106007556A
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- concrete
- high intensity
- pumpable
- regeneration concrete
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses pumpable high-strength recycled concrete and a preparation technology thereof. Waste concrete is utilized to make recycled coarse and fine aggregates. In the crushing process of the waste concrete, the recycled coarse aggregates and the recycled fine aggregates are produced, and good grading is formed. A proper amount of natural stones, cement, pulverized fuel ash, silicon powder, a high-efficiency water reducing agent and water are added according to the proportion, and C40-C60 graded high-strength recycled concrete can be obtained after mixing. The waste concrete in construction waste is fully utilized, and waste concrete recycling is achieved on the premise that the strength and performance are not affected.
Description
Technical field
The present invention relates to construction refuse resource and utilize field, be specifically related to a kind of pumpable high intensity and follow
Ring regeneration concrete and preparation technology thereof.
Background technology
Concrete has a long history as a kind of construction material, be modern times field of civil engineering by extensively
A kind of material of general utilization.The raw material of normal concrete is mainly cement, coarse aggregate (stone), fine aggregate
(sand), water, wherein fluvial sand is a kind of rare natural resources, along with the further development of urbanization process,
Fluvial sand can be fewer and feweri, and the sea sand substituting fluvial sand can cause the reinforcement corrosion in concrete, and artificial sand is strong
Spend and difficulty reaches requirement.Cement can bring the most again huge resource, the energy, environmental pressure,
Cement industry has been classified as a kind of high energy consumption industry by country.
On the other hand, at architecture construction, fit up, remove, during enlarging etc., substantial amounts of building can be produced
Building refuse.At present the treating method of building waste is mainly taked air storage or landfill.Substantial amounts of build
Building refuse not only occupies the land resource of preciousness, and brings serious environmental problem.
Summary of the invention
The present invention proposes a kind of pumpable high intensity circular regeneration concrete and preparation technology thereof, utilizes useless
Abandon concrete process slightly, fine aggregate, part substitutes rubble and sand, solves by the way of adding silica flour
Recycled concrete strength is low, shrink big technical problem.In order to achieve the above object, the present invention uses such as
Lower technical scheme:
A kind of pumpable high intensity circular regeneration concrete, including regenerated coarse aggregate, recycled fine aggregate, sky
So rubble, cement, flyash, silica flour, high efficiency water reducing agent and water；Described regeneration is thick, fine aggregate is by giving up
Abandon concrete disintegrating and process prepared.
Preferably, described regenerated coarse aggregate particle diameter is 5～20mm.
Preferably, described recycled fine aggregate particle diameter is 0.15～0.475mm.
Preferably, described pumpable high intensity circular regeneration concrete be strength grade be C40 regeneration mix
Solidifying soil, it includes regenerated coarse aggregate 750～850 parts, rubble 350～450 parts, regeneration according to mass fraction
Fine aggregate 600～650 parts, high efficiency water reducing agent 8～10 parts, cement 300～350 parts, flyash 110～130
Part, water 170～180 parts.
Preferably, described pumpable high intensity circular regeneration concrete be strength grade be C60 regeneration mix
Solidifying soil, it includes regenerated coarse aggregate 700～750 parts, rubble 500～600 parts, regeneration according to mass fraction
Fine aggregate 650～700 parts, high performance water reducing agent of polyocarboxy acid 13～15 parts, cement 400～450 parts, fine coal
Ash 130～150 parts, silica flour 40～60 parts, water 150～160 parts.
A kind of pumpable high intensity circular regeneration concrete preparation technology, comprises the following steps:
S1: be purged by the foreign material in discarded concrete, carries out break process by discarded concrete,
To the recycled fine aggregate that the regenerated coarse aggregate that particle diameter is 5～20mm, particle diameter are 0.15～0.475mm；
S2: the regeneration that gets is thick, fine aggregate forms grating by being converted by discarded concrete, addition cement,
Flyash, silicon ash, high-performance water reducing agent, water, and then it is mixed to make a kind of pumpable high intensity circular regeneration
Solidifying soil.
Preferably, described step S1 concretely comprises the following steps:
S1-1: by discarded concrete break process, sorts out coarse aggregate therein and carries out cleaning treatment,
Put preservation after drying in storage；
S1-2: after sorting out coarse aggregate, for the fine particle of 0.15～0.475mm, makees regeneration concrete
Fine aggregate use.
Preferably, described step S2 concretely comprises the following steps:
S2-1: by forced mixer inwall moistening, by load weighted regenerated coarse aggregate, recycled fine aggregate,
Rubble stirs in pouring forced mixer into；
S2-2: to be mixed uniformly after, the mixture in step S2-1 adds cement, flyash, silicon
Powder, after uniformly being mixed with water by high efficiency water reducing agent, then pours the stirring of above-mentioned mixture into simultaneously by this mixture
2min；
S2-3: pour the mixture of remaining water Yu high efficiency water reducing agent into forced mixer, treat mixture
Stir.
The one pumpable high intensity circular regeneration concrete of present invention offer and preparation technology thereof, discarded
During concrete disintegrating, process coarse aggregate, fine aggregate.
The present invention provide one pumpable high intensity circular regeneration concrete and preparation technology, have with
The effect of lower improvement:
(1) coarse aggregate of the present invention uses and comes from discarded concrete and crush good thick, thin of grating after sorting
Aggregate, this kind thick, fine aggregate pattern and rubble, medium sand difference are little, physics, stable chemical performance.
The intensity of regeneration concrete is improved, to meet the requirement of structural elements bearing load by adding silica flour；
The slump and the divergence of regeneration concrete is improved, to meet by addition flyash and high efficiency water reducing agent
The requirement of pumping.
(2) regenerated coarse aggregate of the present invention, recycled fine aggregate derive from discarded concrete, this
Bright take full advantage of discarded concrete, be truly realized and made the best use of everything.
Detailed description of the invention
The present invention is described in detail, in the illustrative examples of this present invention below in conjunction with specific embodiment
And explanation is used for explaining the present invention, but not as a limitation of the invention.
Embodiment 1:
A kind of pumpable high intensity circular regeneration concrete, including the regenerated coarse aggregate that particle diameter is 5～20mm,
Particle diameter is the recycled fine aggregate of 0.15～0.475mm, and according to match ratio add rubble, P.O.42.5R
Cement, second class powered coal ash, silica flour, high efficiency water reducing agent and water.
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C40, its
Regenerated coarse aggregate 750 parts, rubble 350 parts, recycled fine aggregate 600 parts, height is included according to mass fraction
Effect water reducer 8 parts, cement 300 parts, 110 parts of flyash, 170 parts of water.
Embodiment 2
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C40, its
Regenerated coarse aggregate 850 parts, rubble 450 parts, recycled fine aggregate 650 parts, height is included according to mass fraction
Effect water reducer 10 parts, cement 350 parts, 130 parts of flyash, 180 parts of water.
Embodiment 3
A kind of pumpable high intensity circular regeneration concrete, including the regenerated coarse aggregate that particle diameter is 5～20mm,
Particle diameter is the recycled fine aggregate of 0.15～0.475mm, and according to match ratio add rubble, P.O.42.5R
Cement, second class powered coal ash, silica flour, high efficiency water reducing agent and water.
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C60, its
Include regenerated coarse aggregate 700 parts, rubble 500 parts, recycled fine aggregate 650 parts according to mass fraction, gather
Carboxylic acid high-performance water reducing agent 13 parts, cement 400 parts, 130 parts of flyash, silica flour 40 parts, water 150
Part.
Embodiment 4
A kind of pumpable high intensity circular regeneration concrete, including the regenerated coarse aggregate that particle diameter is 5～20mm,
Particle diameter is the recycled fine aggregate of 0.15～0.475mm, and according to match ratio add rubble, P.O.42.5R
Cement, second class powered coal ash, silica flour, high efficiency water reducing agent and water.
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C60, its
Include regenerated coarse aggregate 750 parts, rubble 600 parts, recycled fine aggregate 700 parts according to mass fraction, gather
Carboxylic acid high-performance water reducing agent 15 parts, cement 450 parts, 150 parts of flyash, silica flour 60 parts, water 160
Part.
A kind of pumpable high intensity circular regeneration concrete preparation technology, comprises the following steps:
S1: be purged by the foreign material in discarded concrete, to get rid of foreign material shadow too much in regeneration aggregate
Ringing intensity and the service behaviour of regeneration concrete, discarded concrete is carried out break process, obtaining particle diameter is
The regenerated coarse aggregate of 5～20mm, particle diameter are the recycled fine aggregate of 0.15～0.475mm, specifically comprise the following steps that
S1-1: discarded concrete is sent into jaw crusher and carries out break process, sorting out wherein particle diameter is
The regenerated coarse aggregate of 5～20mm also carries out cleaning treatment, puts preservation after drying in storage；
S1-2: after removing regenerated coarse aggregate, for the fine particle of 0.15～0.475mm, makees regeneration coagulation
The fine aggregate of soil is used.
S2: by being converted the regenerated coarse aggregate that gets by discarded concrete, recycled fine aggregate forms grating, adds
Enter cement, flyash, silicon ash, high efficiency water reducing agent, water, and then make the circulation of a kind of pumpable high intensity
Regeneration concrete, specifically comprises the following steps that
S2-1: by forced mixer inwall moistening, by load weighted regenerated coarse aggregate, recycled fine aggregate,
Rubble stirs in pouring forced mixer into；
S2-2: to be mixed uniformly after, the mixture in step S2-1 adds cement, flyash, silicon
Powder, after uniformly being mixed with water by high efficiency water reducing agent, then pours the stirring of above-mentioned mixture into simultaneously by this mixture
2min；
S2-3: pour the mixture of remaining water Yu high efficiency water reducing agent into forced mixer, treat mixture
Stir.
The technical scheme provided the embodiment of the present invention above is described in detail, used herein
Principle and the embodiment of the embodiment of the present invention are set forth by specific case, saying of above example
The bright principle being only applicable to help to understand the embodiment of the present invention；General technology people simultaneously for this area
Member, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application,
In sum, this specification content should not be construed as limitation of the present invention.
Claims (8)
1. a pumpable high intensity circular regeneration concrete, it is characterised in that:
Including regenerated coarse aggregate, recycled fine aggregate, natural rubble, cement, flyash, silica flour, efficiently
Water reducer and water；
Described regeneration is thick, fine aggregate is prepared by discarded concrete break process.
Pumpable high intensity circular regeneration concrete the most as claimed in claim 1, it is characterised in that:
Described regenerated coarse aggregate particle diameter is 5～20mm.
Pumpable high intensity circular regeneration concrete the most as claimed in claim 1, it is characterised in that:
Described recycled fine aggregate particle diameter is 0.15～0.475mm.
Pumpable high intensity circular regeneration concrete the most as claimed in claim 1, it is characterised in that:
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C40, its
Regenerated coarse aggregate 750～850 parts, rubble 350～450 parts, recycled fine aggregate is included according to mass fraction
600～650 parts, high efficiency water reducing agent 8～10 parts, cement 300～350 parts, flyash 110～130 parts, water
170～180 parts.
Pumpable high intensity circular regeneration concrete the most as claimed in claim 1, it is characterised in that:
Described pumpable high intensity circular regeneration concrete be strength grade be the regeneration concrete of C60, its
Regenerated coarse aggregate 700～750 parts, rubble 500～600 parts, recycled fine aggregate is included according to mass fraction
650～700 parts, high performance water reducing agent of polyocarboxy acid 13～15 parts, cement 400～450 parts, flyash 130～150
Part, silica flour 40～60 parts, water 150～160 parts.
6. a pumpable high intensity circular regeneration concrete preparation technology, it is characterised in that include following step
Rapid:
S1: be purged by the foreign material in discarded concrete, carries out break process by discarded concrete,
To the recycled fine aggregate that the regenerated coarse aggregate that particle diameter is 5～20mm, particle diameter are 0.15～0.475mm；
S2: the regeneration that gets is thick, fine aggregate forms grating by being converted by discarded concrete, addition cement,
Flyash, silicon ash, high-performance water reducing agent, water, and then it is mixed to make a kind of pumpable high intensity circular regeneration
Solidifying soil.
Pumpable high intensity circular regeneration concrete preparation technology the most as claimed in claim 6, its feature
It is that described step S1 concretely comprises the following steps:
S1-1: by discarded concrete break process, sorts out coarse aggregate therein and carries out cleaning treatment,
Put preservation after drying in storage；
S1-2: after sorting out coarse aggregate, for the fine particle of 0.15～0.475mm, makees regeneration concrete
Fine aggregate use.
Pumpable high intensity circular regeneration concrete preparation technology the most as claimed in claim 6, its feature
It is that described step S2 concretely comprises the following steps:
S2-1: by forced mixer inwall moistening, by load weighted regenerated coarse aggregate, recycled fine aggregate,
Rubble stirs in pouring forced mixer into；
S2-2: to be mixed uniformly after, the mixture in step S2-1 adds cement, flyash, silicon
Powder, after uniformly being mixed with water by high efficiency water reducing agent, then pours the stirring of above-mentioned mixture into simultaneously by this mixture
2min；
S2-3: pour the mixture of remaining water Yu high efficiency water reducing agent into forced mixer, treat mixture
Stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319767.XA CN106007556A (en) | 2016-05-13 | 2016-05-13 | Pumpable high-strength recycled concrete and preparation technology thereof |
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| CN201610319767.XA CN106007556A (en) | 2016-05-13 | 2016-05-13 | Pumpable high-strength recycled concrete and preparation technology thereof |
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| CN106007556A true CN106007556A (en) | 2016-10-12 |
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| CN201610319767.XA Pending CN106007556A (en) | 2016-05-13 | 2016-05-13 | Pumpable high-strength recycled concrete and preparation technology thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235684A (en) * | 2017-06-21 | 2017-10-10 | 福州大学 | A kind of recycled fine aggregate ultra-high performance concrete and its application method |
| CN107827414A (en) * | 2017-11-01 | 2018-03-23 | 安徽铭能保温科技有限公司 | A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide |
| CN108821655A (en) * | 2018-07-02 | 2018-11-16 | 深圳市东大洋建材有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN109053085A (en) * | 2018-09-28 | 2018-12-21 | 徐州工润建筑科技有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN109665762A (en) * | 2019-01-07 | 2019-04-23 | 深圳市建筑设计研究总院有限公司 | Pumpable regeneration monolith and preparation method thereof |
| CN112551961A (en) * | 2020-12-30 | 2021-03-26 | 湖南大学 | Regenerated UHPC cement concrete and preparation method thereof |
| CN112608079A (en) * | 2020-12-10 | 2021-04-06 | 北京京能建设集团有限公司 | Method for recycling waste concrete |
| CN112624674A (en) * | 2020-12-23 | 2021-04-09 | 东莞市建业混凝土有限公司 | High-strength recycled concrete and preparation method thereof |
| WO2022028047A1 (en) * | 2020-08-04 | 2022-02-10 | 山东大学 | High-strength concrete and preparation method therefor |
| CN114380557A (en) * | 2022-01-26 | 2022-04-22 | 广东华南混凝土有限公司 | High-strength environment-friendly concrete for pavement and preparation method thereof |
| CN114940601A (en) * | 2022-01-19 | 2022-08-26 | 临沂蓝泰环保科技有限公司 | Building waste material-based concrete for filler wall constructional column and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235684A (en) * | 2017-06-21 | 2017-10-10 | 福州大学 | A kind of recycled fine aggregate ultra-high performance concrete and its application method |
| CN107235684B (en) * | 2017-06-21 | 2019-12-17 | 福州大学 | Recycled fine aggregate ultrahigh-performance concrete and use method thereof |
| CN107827414A (en) * | 2017-11-01 | 2018-03-23 | 安徽铭能保温科技有限公司 | A kind of preparation method for the recycled high performance concrete for adulterating graphene oxide |
| CN108821655A (en) * | 2018-07-02 | 2018-11-16 | 深圳市东大洋建材有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN109053085A (en) * | 2018-09-28 | 2018-12-21 | 徐州工润建筑科技有限公司 | A kind of regeneration concrete and preparation method thereof |
| CN109665762A (en) * | 2019-01-07 | 2019-04-23 | 深圳市建筑设计研究总院有限公司 | Pumpable regeneration monolith and preparation method thereof |
| WO2022028047A1 (en) * | 2020-08-04 | 2022-02-10 | 山东大学 | High-strength concrete and preparation method therefor |
| US11753339B2 (en) | 2020-08-04 | 2023-09-12 | Shandong University | High-strength concrete and preparation method thereof |
| CN112608079A (en) * | 2020-12-10 | 2021-04-06 | 北京京能建设集团有限公司 | Method for recycling waste concrete |
| CN112624674A (en) * | 2020-12-23 | 2021-04-09 | 东莞市建业混凝土有限公司 | High-strength recycled concrete and preparation method thereof |
| CN112551961A (en) * | 2020-12-30 | 2021-03-26 | 湖南大学 | Regenerated UHPC cement concrete and preparation method thereof |
| CN114940601A (en) * | 2022-01-19 | 2022-08-26 | 临沂蓝泰环保科技有限公司 | Building waste material-based concrete for filler wall constructional column and preparation method thereof |
| CN114380557A (en) * | 2022-01-26 | 2022-04-22 | 广东华南混凝土有限公司 | High-strength environment-friendly concrete for pavement and preparation method thereof |
| CN114380557B (en) * | 2022-01-26 | 2022-12-16 | 广东华南混凝土有限公司 | High-strength environment-friendly concrete for pavement and preparation method thereof |
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Application publication date: 20161012 |