CN107640939A - A kind of spray anchor concrete prepared using building waste - Google Patents
A kind of spray anchor concrete prepared using building waste Download PDFInfo
- Publication number
- CN107640939A CN107640939A CN201710890154.6A CN201710890154A CN107640939A CN 107640939 A CN107640939 A CN 107640939A CN 201710890154 A CN201710890154 A CN 201710890154A CN 107640939 A CN107640939 A CN 107640939A
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- Prior art keywords
- concrete
- spray anchor
- building waste
- anchor concrete
- aggregate
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- 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
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- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to field of solid waste treating technology, proposes a kind of spray anchor concrete prepared using building waste, regenerated coarse aggregate and recycled fine aggregate are used as using building waste discarded concrete.Compared with tradition sprays anchor concrete, the spray anchor concrete that the present invention is prepared using building waste has following features：Bulk strength and density increase, spray anchor concrete works construction suitable for high intensity.Cost advantage can be highlighted by being promoted the use of in the deficient city of natural resources.
Description
Technical field
The invention belongs to field of solid waste treating technology, more particularly to a kind of coagulation prepared with solid waste
Soil.
Background technology
With the quickening of Urbanization in China, the yield of urban building waste is also rapidly increasing, and turns into urban development
A big obstacle.In face of increasingly serious environmental problem, the generation of building waste is undoubtedly exacerbated between human and environment, resource
Contradiction, it have impact on the coordinated development of urban ecological environment.For environmental protection and the utilization of resources, building waste processing and again
Make profits with the inexorable trend for being all future development.By practice in recent years, China is in building waste treatment technology and comprehensive profit
More breakthrough is obtained with technology, construction refuse regenerated product is realized and answered in road foundation, engineering backfill, mortar building materials field
With.But contained miscellaneous more, the reasons such as brick and tile isolation technics is immature, construction refuse regenerated aggregate answering in concrete by building waste
With road backfill, roadbed is confined to, by construction refuse regenerated aggregate for spraying the research of anchor concrete and using seldom.
Anchor pole and spray anchor concrete are collectively forming a bearing structure with country rock, can effectively limit the freedom of surrouding rock deformation
Development, adjusts the stress distribution of country rock, prevents rock mass from loosely falling.It can be used as the gib in work progress, at some
In the case of, it need not can also again do permanent support or lining cutting.Spray anchor concrete be used for the support engineering, to compression strength require compared with
It is high.
The content of the invention
It is an object of the invention to provide a set of technology, and spray anchor coagulation is prepared using building waste discarded concrete as raw material
Soil, its performance is better than common spray anchor concrete.The technology has the characteristics that technique is simple, cost is low simultaneously, for reducing engineering
Cost, reduce environmental pollution, promote the sustainable strategic smooth implementation in China that there is important economy and realistic meaning.
To realize above-mentioned purpose of the present invention, the technical scheme used for：
A kind of spray anchor concrete prepared using building waste, regenerated coarse aggregate is used as using building waste discarded concrete
And recycled fine aggregate.
Further, the spray anchor concrete material component and part is：1.0 parts of cement, recycled fine aggregate 1.85-
2.06 parts, regenerated coarse aggregate 1.85-2.06 parts, accelerator 0.02-0.08 parts.
Wherein, the building waste discarded concrete refers to relatively simple waste concrete block, includes the ground base of dismounting
Plinth, the beam of reinforced concrete structure building, post, plate, one kind caused by the concrete road surface removed in discarded concrete or
It is a variety of.
Wherein, the cement includes the portland cement and/or strength grade more than 42.5 of strength grade more than 42.5
Portland cement.
Optimal technical scheme of the present invention is that the recycled fine aggregate preparation technology is by building refuse concrete block raw material point
Select, into building waste process for producing line, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist, by dregs,
Old metal, light-weight walling material, foreign organic matter separation, produce the regeneration coarse-fine aggregate available for Structural Engineering, control regeneration
Fine aggregate particle diameter 0-5mm, modulus of fineness 2.5-3.2, debris content is less than 0.5%.
Regenerated coarse aggregate particle diameter can be controlled by vibrating sieving machine sieve aperture；Using impact breaker to ensure gill shape in aggregate
Granule content is less than 8%.As flat-elongated particles can influence concrete bulk strength too much；Pass through selection by winnowing, magnetic separation, wet concentration and artificial
The means such as selection efficiently separate the foreign organic matters such as the old metal in building waste, light-weight walling material, plastics, paper, control
Regenerate debris content in coarse-fine aggregate and be less than 0.5%.
Wherein, the regenerated coarse aggregate preparation technology is to sub-elect building refuse concrete block raw material, into building rubbish
Rubbish process for producing line, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist etc. technical process, produce available
In the regeneration of Structural Engineering is thick, fine aggregate.Regenerated coarse aggregate particle diameter can be controlled by vibrating sieving machine sieve aperture in the range of 5-10mm；To the greatest extent
Measure using impact breaker to ensure that flat-elongated particles content is less than 8% in aggregate.As flat-elongated particles can influence to mix too much
Coagulate native bulk strength.
By the means such as selection by winnowing, magnetic separation, wet concentration and artificial selection by the old metal in building waste, light-weight walling material,
The foreign organic matters such as plastics, paper efficiently separate, and debris content is less than 0.5% in control regeneration coarse-fine aggregate.
It is highly preferred that the accelerator is liquid, non-alkali.
Special concrete is anchored as injection, the strength grade of spray anchor concrete of the present invention is C-20 to C-
30。
The application of spray anchor concrete of the present invention, for the build of tunnel cavern class underground engineering, side slope and foundation ditch
Build or have the repairing and reinforcement of engineering.
The beneficial effects of the present invention are：
The present invention proposes building waste waste concrete block, and foundation, the reinforced concrete structure such as removed are built
Beam, the regeneration coarse-fine aggregate that is obtained by certain PROCESS FOR TREATMENT of post, plate, the concrete road surface etc. removed can be in spray anchor coagulation
Native engineer applied.It is to sub-elect building refuse concrete block raw material to regenerate coarse-fine aggregate preparation technology, at building waste
Production line is managed, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist etc. technical process, passes through several equipment groups
Into the technological process of Combined Treatment, the regeneration of producing 0-5mm and 5-10mm particle diameters is thick, fine aggregate, can be replaced with 100% natural
Sandstone is used for the production for spraying anchor concrete, makes mutual bonding more firm because regeneration aggregate surface roughness is more than natural aggregate
Gu therefore performance is better than the spray anchor concrete of sandstone in proportion.
The construction refuse regenerated aggregate replaces the spray anchor concrete of natural sand stone production to have that cost is low, and compression strength is high,
The features such as impervious good.Especially suitable for underground engineerings such as tunnel caverns, side slope and base pit engineering, repairing and reinforcement engineering etc. are promoted
Using.The invention sprays anchor concrete engineering quality for improving, and reduces construction costs, reduces environmental pollution, and promotes China to hold
The smooth implementation of continuous development strategy has important economy and realistic meaning.
Compared with tradition sprays anchor concrete, the spray anchor concrete that the present invention is prepared using building waste has following features：
Bulk strength and density increase, spray anchor concrete works construction suitable for high intensity.Promoted in the deficient city of natural resources
Using cost advantage can be highlighted.
Embodiment
Following examples further illustrate present disclosure, but should not be construed as limiting the invention.
In embodiment, unless otherwise specified, used means are existing technology in this field means.
Embodiment 1：C20 sprays anchor concrete
First, material requirements：
1st, use as caused by being removed foundation, building structure, pavement of road etc. that discarded concrete is raw material, into building
Building refuse process for producing line, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist etc. technical process, pass through jaw
Formula disintegrating machine, impact breaker, vibrating screen classifier, winnowing machine, hydraulic flotation machine, the technique stream of magnetic separator composition Combined Treatment
Journey, reach the separation such as dregs, old metal, light-weight walling material, foreign organic matter, produce available for the regeneration of Structural Engineering it is thick,
Fine aggregate.It is less than by vibrating sieving machine sieve aperture control recycled fine aggregate particle diameter 0-5mm, modulus of fineness 2.5-3.2, debris content
0.5%.Regenerated coarse aggregate particle diameter 5-10mm is controlled by vibrating sieving machine sieve aperture, using impact breaker to ensure faller gill in aggregate
Shape granule content is less than 8%, and debris content is less than 0.5%.
2nd, cement：42.5 portland cements.
3rd, accelerator：Liquid, non-alkali (purchased in market).
4th, water：Drinking water.
2nd, it is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 1：The testing result of embodiment 1
Comparative example 1
First, material requirements：
1st, cement：42.5 portland cements.
2nd, accelerator：Liquid, non-alkali (purchased in market).
3rd, middle sand：Particle diameter 0-5mm, modulus of fineness 2.5-3.2 river sand or artificial sand.
4th, rubble：Particle diameter 5-10mm rubble
5th, water：Drinking water.
2nd, it is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 2：Comparative example testing result
| Project | Slump mm | 28d compression strength MPa |
| Standard | 80-200 | ≥20 |
| As a result | 90 | 35.6 |
Embodiment 2：C25 sprays anchor concrete
First, material requirements：
1st, use as caused by being removed foundation, building structure, pavement of road etc. that discarded concrete is raw material, into building
Building refuse process for producing line, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist etc. technical process, by several
The technological process of kind equipment composition Combined Treatment, reaches the separation such as dregs, old metal, light-weight walling material, foreign organic matter, production
Go out can be used for that the regeneration of Structural Engineering is thick, fine aggregate.Recycled fine aggregate particle diameter 0-5mm, modulus of fineness 2.5-3.2, debris content
Less than 0.5%.Regenerated coarse aggregate particle diameter 5-10mm, flat-elongated particles content in aggregate is controlled to be less than using impact breaker
8%, debris content is less than 0.5%.The equipment used is the same as embodiment 1.
2nd, cement：42.5 portland cements.
3rd, accelerator：Liquid, non-alkali (purchased in market).
4th, water：Drinking water
2nd, it is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 2：The testing result of embodiment 2
| Project | Slump mm | 28d compression strength MPa |
| Standard | 80-200 | ≥25 |
| As a result | 95 | 42.5 |
Comparative example 2
It is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 4：Comparative example testing result
Embodiment 3：C30 sprays anchor concrete
First, material requirements：
1st, use as caused by being removed foundation, building structure, pavement of road etc. that discarded concrete is raw material, into building
Building refuse process for producing line, by sorting removal of impurities, broken, screening, particle shaping, removal micro mist etc. technical process, by several
The technological process of kind equipment composition Combined Treatment, reaches the separation such as dregs, old metal, light-weight walling material, foreign organic matter, production
Go out can be used for that the regeneration of Structural Engineering is thick, fine aggregate.Recycled fine aggregate particle diameter 0-5mm, modulus of fineness 2.5-3.2, debris content
Less than 0.5%.Regenerated coarse aggregate particle diameter 5-10mm, flat-elongated particles content should be less than 8%, and debris content is less than 0.5%.Use
Equipment with embodiment 1.
2nd, cement：42.5 portland cements.
3rd, accelerator：Liquid, non-alkali.
4th, water：Drinking water
2nd, it is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 5：The testing result of embodiment 3
| Project | Slump mm | 28d compression strength MPa |
| Standard | 80-200 | ≥30 |
| As a result | 95 | 48.2 |
Comparative example 3
It is formulated (1 cubic meter of concrete dosage)
3rd, testing result (standard foundation：《Gunite concrete application technology code》JGJ/T372-2016).
Table 4：Comparative example testing result
| Project | Slump mm | 28d compression strength MPa |
| Standard | 80-200 | ≥30 |
| As a result | 95 | 44.7 |
Although above the present invention is made to retouch in detail with general explanation, embodiment and experiment
State, but on the basis of the present invention, some modifications can be made to it or are improved, this is aobvious and easy to those skilled in the art
See.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, are belonged to claimed
Scope.
Claims (10)
1. it is a kind of using building waste prepare spray anchor concrete, it is characterised in that using building waste discarded concrete as
Regenerated coarse aggregate and recycled fine aggregate.
2. spray anchor concrete as claimed in claim 1, it is characterised in that the spray anchor concrete material component and part
For：1.0 parts of cement, recycled fine aggregate 1.85-2.06 parts, regenerated coarse aggregate 1.85-2.06 parts, accelerator 0.02-0.08 parts.
3. spray anchor concrete as claimed in claim 1, it is characterised in that the building waste discarded concrete refers to relatively simple
Waste concrete block, including the foundation of dismounting, reinforced concrete structure building beam, post, plate, remove concrete road
One or more in discarded concrete caused by face.
4. spray anchor concrete as claimed in claim 1, it is characterised in that the cement includes the silicon of strength grade more than 42.5
The Portland cement of acid salt cement and/or strength grade more than 42.5.
5. spray anchor concrete as claimed in claim 1, it is characterised in that the recycled fine aggregate preparation technology is will to build rubbish
Rubbish concrete block raw material sub-elects, into building waste process for producing line, by sorting removal of impurities, broken, screening, particle shaping,
Micro mist is removed, dregs, old metal, light-weight walling material, foreign organic matter are separated, produced thick available for the regeneration of Structural Engineering
Fine aggregate, control recycled fine aggregate particle diameter 0-5mm, modulus of fineness 2.5-3.2, debris content is less than 0.5%.
6. spray anchor concrete as claimed in claim 1, it is characterised in that the regenerated coarse aggregate preparation technology is will to build rubbish
Rubbish concrete block raw material sub-elects, into building waste process for producing line, by sorting removal of impurities, broken, screening, particle shaping,
Micro mist etc. technical process is removed, reaches dregs, old metal, light-weight walling material, foreign organic matter separation, produces and can be used for tying
The regeneration coarse-fine aggregate of structure engineering, regenerated coarse aggregate particle diameter 5-10mm is controlled, flat-elongated particles content is less than 8%, debris content
Less than 0.5%.
7. spray anchor concrete as claimed in claim 6, it is characterised in that regenerated coarse aggregate grain is controlled by vibrating sieving machine sieve aperture
Footpath；Using impact breaker to ensure in aggregate that flat-elongated particles content is less than 8%.
8. the spray anchor concrete as described in claim any one of 1-7, it is characterised in that the accelerator is liquid, non-alkali.
9. the spray anchor concrete as described in claim 1-7, it is characterised in that the strength grade of the spray anchor concrete is C-20
To C-30.
10. the application of any one of the claim 1-9 spray anchor concrete, it is characterised in that for tunnel cavern class underground work
The repairing and reinforcement of the build of journey, the build of side slope and foundation ditch or existing engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710890154.6A CN107640939A (en) | 2017-09-27 | 2017-09-27 | A kind of spray anchor concrete prepared using building waste |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710890154.6A CN107640939A (en) | 2017-09-27 | 2017-09-27 | A kind of spray anchor concrete prepared using building waste |
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| CN201710890154.6A Pending CN107640939A (en) | 2017-09-27 | 2017-09-27 | A kind of spray anchor concrete prepared using building waste |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689659A (en) * | 2018-05-30 | 2018-10-23 | 西安公路研究院 | A kind of construction refuse regenerated mixture of cement stabilizing and preparation method thereof |
| CN111965325A (en) * | 2020-06-29 | 2020-11-20 | 中铁第一勘察设计院集团有限公司 | Method for judging utilization of tunnel waste slag as building material aggregate |
| CN112299795A (en) * | 2020-11-25 | 2021-02-02 | 四川交通职业技术学院 | Recycled concrete and preparation method thereof |
| CN112919864A (en) * | 2021-03-08 | 2021-06-08 | 中交武汉港湾工程设计研究院有限公司 | Recycled aggregate fiber reinforced shotcrete and preparation method thereof |
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| CN102838307A (en) * | 2012-08-27 | 2012-12-26 | 首钢总公司 | Method and system for treating construction waste |
| CN106747080A (en) * | 2016-12-08 | 2017-05-31 | 贵州省公路工程集团有限公司 | The C20 concrete and pressing mold shotcrete technology of tunnel bracing members preliminary bracing |
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2017
- 2017-09-27 CN CN201710890154.6A patent/CN107640939A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838307A (en) * | 2012-08-27 | 2012-12-26 | 首钢总公司 | Method and system for treating construction waste |
| CN106747080A (en) * | 2016-12-08 | 2017-05-31 | 贵州省公路工程集团有限公司 | The C20 concrete and pressing mold shotcrete technology of tunnel bracing members preliminary bracing |
Non-Patent Citations (1)
| Title |
|---|
| 许贤敏: "再生骨料在国外的应用", 《吉林建材》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689659A (en) * | 2018-05-30 | 2018-10-23 | 西安公路研究院 | A kind of construction refuse regenerated mixture of cement stabilizing and preparation method thereof |
| CN111965325A (en) * | 2020-06-29 | 2020-11-20 | 中铁第一勘察设计院集团有限公司 | Method for judging utilization of tunnel waste slag as building material aggregate |
| CN111965325B (en) * | 2020-06-29 | 2023-04-07 | 中铁第一勘察设计院集团有限公司 | Method for judging utilization of tunnel waste slag as building material aggregate |
| CN112299795A (en) * | 2020-11-25 | 2021-02-02 | 四川交通职业技术学院 | Recycled concrete and preparation method thereof |
| CN112919864A (en) * | 2021-03-08 | 2021-06-08 | 中交武汉港湾工程设计研究院有限公司 | Recycled aggregate fiber reinforced shotcrete and preparation method thereof |
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Application publication date: 20180130 |