CN106977140A - A kind of utilization discarded concrete prepares the preparation method of concrete - Google Patents
A kind of utilization discarded concrete prepares the preparation method of concrete Download PDFInfo
- Publication number
- CN106977140A CN106977140A CN201710204691.0A CN201710204691A CN106977140A CN 106977140 A CN106977140 A CN 106977140A CN 201710204691 A CN201710204691 A CN 201710204691A CN 106977140 A CN106977140 A CN 106977140A
- Authority
- CN
- China
- Prior art keywords
- concrete
- slag
- utilization
- discarded
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- C04B18/141—Slags
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building field, more particularly to a kind of utilization discarded concrete prepares the preparation method of concrete.The method that the utilization discarded concrete that the present invention is provided prepares concrete, including step：1) by discarded concrete and slag by weight 5 10:100 carry out combined grinding, and it is 400 450m that specific surface area, which is made,2/ kg slag concrete microring array powder；2) by step 1) in obtained other raw materials of slag concrete microring array powder carry out being mixed to prepare concrete by weight.The utilization discarded concrete that the present invention is provided prepares the preparation method of concrete, can solve the handling problems of building waste and building waste is obtained recycling utilization, and obtained concrete can be made to reach construction requirement again.
Description
Technical field
The invention belongs to building field, more particularly to a kind of utilization discarded concrete prepares the preparation method of concrete.
Background technology
Building waste refers to that construction, unit in charge of construction or individual are built to all kinds of buildings, structures, pipe network etc., spread
If or obtaining dregs, spoir, rejected material, remaining mud and other discarded objects produced by dismounting, reparative processes.By being mixed to current domestic brick
The rough Statistics of the residential housing such as structure and reinforced concrete structure construction material loss, every 10,000 square metres of residential housings are applied
500~600 tons of building castoff can be produced during work, the building castoff that the annual New Dwelling in the whole nation is produced is up to 40,000,000
More than ton, account for 40% of municipal refuse or so.
According to the estimation of relevant department of the Ministry of Construction, to the year two thousand twenty China also by about 30,000,000,000 square metres of new building area
All kinds of buildings, these construction activities will produce nearly 2,000,000,000 tons of building castoff.In addition, domestic annual reconstruction of the old city town will at least be torn open
Except three, 40,000,000 square metres of Old building, several hundred million tons of building castoffs will be produced again.
But when singly mixing waste concrete fine powder material (i.e. waste concrete micro powder), the compression strength of concrete can be caused all to reach
Less than the related request of concrete.
The content of the invention
It is an object of the invention to provide a kind of utilization discarded concrete prepare the preparation method of concrete, the purpose of the present invention
It can be achieved through the following technical solutions：
A kind of utilization discarded concrete prepares the preparation method of concrete, comprises the following steps:
1) by discarded concrete and slag by weight 5-10:100 carry out combined grinding, and it is 400- that specific surface area, which is made,
450m2/ kg slag concrete microring array powder；Because the grindability of discarded concrete is better than slag, under this condition obtained ore deposit
The distribution of particles that slag concrete microring array powder composite powder particle diameter is less than 11 μm is significantly increased, and composite powder particle diameter is less than 1 μm of granule content
More than 10 times of pure miberal powder.So combined grinding when, the addition of discarded concrete can be improved into the later strength of miberal powder.It is such
Be conducive to increasing the mechanical property of obtained concrete.
2) by step 1) in obtained slag concrete microring array powder carry out being mixed to prepare concrete by weight with following raw materials according：
Water：160-180
Cement：200-250
Sand：760-880
Stone：1000-1100
Flyash：50-70
Slag concrete microring array powder：50-80
Additive：4-5.Carboxylic acid group and calcium lignosulfonate class concrete admixture are commonly used, such as H/MG1, Wuhan East China chemical industry is limited
Company
It is preferred that, the step 1) described in discarded concrete and slag by weight be 4-6:100.Made under this ratio
The mechanical property of the concrete obtained is more preferably.
Compared with prior art, the present invention has the advantage that as follows：
1) influence of flyash, three kinds of admixtures of slag micropowder and waste concrete fine powder material to cement mortar pore structure is bright
It is aobvious, but influence degree significant difference.When singly mixing waste concrete fine powder material, cement mortar macropore can be caused to increase, short texture；It is useless
When concrete fine powder material and flyash are mixed again, also result in cement mortar macropore increase, short texture, and its replacement amount is bigger,
Influence is more notable；When waste concrete fine powder material is mixed again with slag micropowder, pore structure can be refined to a certain extent, causes pore
Increase, macropore reduce, and its substitution rate within the specific limits when, thinning effect is especially pronounced.Therefore slag concrete microring array powder adds
When entering concrete is made, it is possible to increase compression strength and raising slump performance.
2) the utilization discarded concrete that the present invention is provided prepares the preparation method of concrete, can solve the place of building waste
Put problem and building waste is obtained recycling utilization, obtained concrete can be made to reach construction requirement again.
Embodiment
With reference to embodiment, the invention will be further described：
The proportioning of embodiment and comparative example see the table below shown：
Additive H/MG1, Wuhan East China Chemical Co., Ltd.
Wherein, the specific surface area of embodiment 1-2 and the slag concrete microring array powder of comparative example 2 is in 400-450m2/kg.It is right
Specific surface area in ratio 1 in slag powders is 449m2/kg.In comparative example 3, after slag concrete microring array powder is each self-grind, then enter
Row mixing, specific surface area is in 400-450m2/kg。
(1) activity index detection data are as follows：
Discarded concrete and slag in slag concrete microring array powder is by weight in 5-10:When between 100, the resistance to compression of 28 days
Intensity and activity index are substantially better than the discarded concrete and slag of slag concrete microring array powder by weight not in the range of this
's.
(2) slump performance test：
Slag is another after being ground after being mixed with discarded concrete to act the slump warp for adding and being mixed with beneficial to control concrete
When lose.
(3) intensity test
Slag is another after being ground after being mixed with discarded concrete to act the compression strength for adding and being mixed with beneficial to concrete is improved.
It is described above be presently preferred embodiments of the present invention, but the present invention should not be limited to disclosed in the embodiment
Content.So every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention, the model that the present invention is protected is both fallen within
Enclose.
Claims (2)
1. a kind of utilization discarded concrete prepares the preparation method of concrete, it is characterised in that comprise the following steps:
1) by discarded concrete and slag by weight 5-10:100 carry out combined grinding, and it is 400-450m that specific surface area, which is made,2/
Kg slag concrete microring array powder；
2) by step 1) in obtained slag concrete microring array powder carry out being mixed to prepare concrete by weight with following raw materials according：
Water：160-180
Cement：200-250
Sand：760-880
Stone：1000-1100
Flyash：50-70
Slag concrete microring array powder：50-80
Additive：4-5.
2. concrete prepared by utilization discarded concrete according to claim 1, it is characterised in that the step 1) it is described
Discarded concrete and slag by weight be 4-6:100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204691.0A CN106977140A (en) | 2017-03-30 | 2017-03-30 | A kind of utilization discarded concrete prepares the preparation method of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204691.0A CN106977140A (en) | 2017-03-30 | 2017-03-30 | A kind of utilization discarded concrete prepares the preparation method of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106977140A true CN106977140A (en) | 2017-07-25 |
Family
ID=59338551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710204691.0A Pending CN106977140A (en) | 2017-03-30 | 2017-03-30 | A kind of utilization discarded concrete prepares the preparation method of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106977140A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538132A (en) * | 2009-04-17 | 2009-09-23 | 浙江大学宁波理工学院 | Recycling method of waste concrete |
| CN102838302A (en) * | 2012-09-04 | 2012-12-26 | 浙江大学宁波理工学院 | Method for activating construction waste regenerated micro-powder |
| CN103553395A (en) * | 2013-10-17 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Recycled green concrete with low cement content and preparation method thereof |
-
2017
- 2017-03-30 CN CN201710204691.0A patent/CN106977140A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538132A (en) * | 2009-04-17 | 2009-09-23 | 浙江大学宁波理工学院 | Recycling method of waste concrete |
| CN102838302A (en) * | 2012-09-04 | 2012-12-26 | 浙江大学宁波理工学院 | Method for activating construction waste regenerated micro-powder |
| CN103553395A (en) * | 2013-10-17 | 2014-02-05 | 北京新奥混凝土集团有限公司 | Recycled green concrete with low cement content and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘大伟等: "废混与矿渣双掺粉体活性及混磨性能实验研究", 《再生资源与循环经济》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
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| RJ01 | Rejection of invention patent application after publication |