CN107915445A - A kind of building refuse concrete and its application - Google Patents
A kind of building refuse concrete and its application Download PDFInfo
- Publication number
- CN107915445A CN107915445A CN201711248872.XA CN201711248872A CN107915445A CN 107915445 A CN107915445 A CN 107915445A CN 201711248872 A CN201711248872 A CN 201711248872A CN 107915445 A CN107915445 A CN 107915445A
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- China
- Prior art keywords
- concrete
- parts
- building
- building refuse
- cement
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- 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
- 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
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of building refuse concrete, belongs to building waste and recycles field.Include the component of following parts by weight：315 parts of cement, 135 parts of flyash, 312 parts of leca, 637 parts of sand, 416 parts of discarded concrete, 241.2 parts of water.The present invention, using sand as fine aggregate, using cement as gelling agent, according to suitable raw material proportioning, ensure that the grain composition and intensity of concrete using leca and discarded concrete as coarse aggregate.The cubic compressive strength that the invention building refuse concrete can be measured by experiment is 20MPa, can be used as the concrete of building structural element.Meanwhile the building refuse concrete has lightweight, insulation and good structure performance, can be used as the load-bearing exterior wall of building structure, while play the role of good thermal and insulating performance.
Description
Technical field
The present invention relates to building waste to recycle field, more particularly to a kind of building refuse concrete and its application.
Background technology
With urban construction and development, the processing of urban building waste has become the persistent ailment of social recognition.《Green building row
Dynamic scheme》" building castoff recycling will be promoted " to grab as major tasks.Construction waste crushing, processing and sharp again
With extremely urgent.
At present, the quantity of China's building waste has accounted for the 30~40% of municipal refuse.Discarded object in building waste
It can be re-used after sorting, pulverization process.Building waste is fabricated to standard brick and carries out experimental study, research by Liang Keke
Different ratio to brick performance influence (《Building refuse concrete standard brick experimental study》Liang Keke, Handan Polytechnic College
Journal, 2012,25 (1)：53-55)；Changzhou University is to the property with the road that building waste makes permeable color recycled concrete
Can be studied (《The Study on Durability of road permeable color recycled concrete》Li Meijuan etc., concrete and cement system
Product, 2014,214 (2)：83-86；《The performance study of road permeable color recycled concrete》Zhu Pinghua etc., concrete,
2013,283 (5)：112-114)；The structural behaviour of construction refuse regenerated concrete coarse aggregate is ground by Nanjing Institute of Technology
Study carefully (《Construction refuse regenerated concrete coarse aggregate structural behaviour research》Normal grain husk etc., Nanjing Institute of Technology's journal, 2013,11 (4)：
67-72)。
Although the prior art has carried out building refuse concrete some researchs, there are resistance to compression for building refuse concrete
The shortcomings that intensity is low, such as Liu Tian outstanding persons (《The inorganic research of building waste lightweight concrete curtain wall penel and application》Liu Tianjie etc., Henan
Science, 2016,34 (5)：765-770) it is prepared for inorganic building refuse concrete, the compression strength of inorganic building refuse concrete
Only 5.7~7.5MPa, is only used for temporary building, it is impossible to be used in building structural element.
The content of the invention
In view of this, it is an object of the invention to provide a kind of building refuse concrete.Building waste provided by the invention
Concrete crushing strength is high, can be used as the load-bearing exterior wall of building structure.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
The present invention provides a kind of building refuse concrete, include the component of following parts by weight：315 parts of cement, fine coal
135 parts of ash, 312 parts of leca, 637 parts of sand, 416 parts of discarded concrete, 241.2 parts of water.
Preferably, the particle diameter of the discarded concrete is≤40mm.
Preferably, the particle diameter of the discarded concrete is 5~40mm.
Preferably, intensity >=C25 of the discarded concrete.
Preferably, bulk density >=500kg/m of the leca3。
Preferably, the particle diameter of the leca is 5~15mm.
Preferably, the cement is portland cement, pulverized fuel ash cement or pozzolan cement.
Preferably, the flyash is I grades of flyash of F classes.
Preferably, the sand is middle sand.
Present invention also offers the answering in building structural element is constructed of building refuse concrete described in above-mentioned technical proposal
With.
The present invention provides a kind of building refuse concrete, include the component of following parts by weight：315 parts of cement, fine coal
135 parts of ash, 312 parts of leca, 637 parts of sand, 416 parts of discarded concrete, 241.2 parts of water.Leca and useless in the invention
It is coarse aggregate to abandon concrete, and sand is fine aggregate, based on intensity is the match ratio of LC25 leca concrete, is mixed with discarded
Solidifying soil is used as coarse aggregate by 40% volume substitution rate instead of leca, can ensure the granular-grade of building refuse concrete
Match somebody with somebody and intensity.The cubic compressive strength that building refuse concrete provided by the invention can be measured by experiment has reached 20MPa,
It can be used as the concrete of building structural element.And due in the present invention most of coarse aggregate be leca, have at the same time
There is the advantages of lightweight, good heat insulating.By heat-insulating property test, building refuse concrete provided by the invention have with
The equally good heat-insulating property of concrete perforated brick.
Embodiment
The present invention provides a kind of building refuse concrete, include the component of following parts by weight：315 parts of cement, fine coal
135 parts of ash, 312 parts of leca, 637 parts of sand, 416 parts of discarded concrete, 241.2 parts of water.
Building refuse concrete provided by the invention includes 315 parts by weight of cement.In the present invention, the cement is preferably
Portland cement, pulverized fuel ash cement or pozzolan cement, more preferably portland cement, specifically, such as 42.5 silicates of PI
Cement.In the present invention, the cement is used as gel rubber material in building refuse concrete.
Building refuse concrete provided by the invention includes 135 weight parts of fine coal ash.In the present invention, the flyash is excellent
Elect I grades of flyash of F classes as.The present invention does not have any special restriction to the source of the flyash, using people in the art
Commercial goods known to member.
Building refuse concrete provided by the invention includes 312 parts by weight clay haydites.In the present invention, the clay pottery
The bulk density of grain is preferably >=500kg/m3.In the present invention, the particle diameter of the leca is preferably 5~15mm.At this
In invention, leca constitutes most of coarse aggregate, ensures that building refuse concrete has excellent lightweight, heat-insulating property.
Building refuse concrete provided by the invention includes 637 parts by weight sand.Sand during the sand is preferably in the present invention,
Particle diameter is 0.35~0.50mm.In the present invention, the sand is as fine aggregate.
Building refuse concrete provided by the invention includes 416 parts by weight discarded concretes.In the present invention, it is described discarded
The intensity of concrete is preferably >=C25.In the present invention, the particle diameter of the discarded concrete is preferably≤40mm, and more preferably 5
~40mm.The present invention is replaced viscous with the discarded concrete of more than the C25 intensity of 5~40mm of particle diameter by 40% volume substitution rate
Native haydite can ensure the grain composition and intensity of building refuse concrete as coarse aggregate.The present invention is to the discarded coagulation
The source of soil does not have special restriction, using discarded concrete well known to those skilled in the art.
The present invention does not have special restriction to the preparation method of building refuse concrete described in above-mentioned technical proposal, using this
The preparation method of composition known to field technology personnel, specifically, being such as crushed to leca and discarded concrete
The particle diameter needed, then mixes raw material according to above-mentioned raw materials ratio.
The present invention provides application of the building refuse concrete described in above-mentioned technical proposal in building structural element is constructed.
The cubic compressive strength of the building refuse concrete of the present invention has reached 20MPa, can be used as building structure structure
The concrete of part uses.
Building refuse concrete provided by the invention and its application are described in detail with reference to embodiment, still
They cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
By intensity for the leca concrete mix of LC25 on the basis of, by 40% volume substitution rate with discarded coagulation
Soil replaces leca, and the match ratio (LF) of the building refuse concrete is as shown in table 1.Wherein, cement is 42.5 silicon of PI
Acid salt cement, flyash are I grades of flyash of F classes, and the bulk density of leca is 500kg/m3, particle diameter is 5~15mm, and sand is
Middle sand, the intensity of discarded concrete is C25, and particle diameter is 5~40mm.Above-mentioned raw materials are mixed, building waste coagulation is prepared
Native LF.
Comparative example
By intensity for the leca concrete mix of LC25 on the basis of, its material fiting ratio (L) is as shown in table 1.
1 concrete mix of table
| Test specimen | Cement/kg | Flyash/kg | Leca/kg | Sand/kg | Water/kg | Discarded concrete/kg |
| L | 315 | 135 | 510 | 637 | 261 | 0 |
| LF | 315 | 135 | 312 | 637 | 241.2 | 416 |
According to the cooperation of table 1, when raw material type disclosed in embodiment 1 has made concrete respectively, and every group of test specimen does three
Block, tested compression strength at 7 days respectively, tested compression strength at 28 days, is averaged, compression strength the results are shown in Table 2.2 table of table
Bright, building refuse concrete reached 20MPa in the intensity of 28 days, can be used as structural concrete.
2 test specimen compression strength result of table
| Test specimen | fcu,7/MPa | fcu,28/MPa | fcu,7/fcu,28 |
| L | 21.18 | 25.87 | 81.9% |
| LF | 15.55 | 20.16 | 77.1% |
Thermodynamic test mainly probes into the building refuse concrete for coordinating leca to be made as coarse aggregate using discarded concrete
As the thermal and insulating performance of materials for wall, the results are shown in Table 3 for the thermodynamic test of test specimen in experiment, surfaces externally and internally heat exchange resistance point
0.11 and 0.04 are not taken as it.
3 thermodynamic test result of table
| Test specimen | Thermal resistance/m2·K/W | Heat transfer coefficient/W/m2·K |
| LF | 0.123 | 3.659 |
According to the calculated relationship between the thermal conductivity factor λ of the thermal resistance R of material, the thickness δ of material and material, can calculate
The thermal conductivity factor of test specimen, and compared with the thermal conductivity factor of common building materials, as shown in table 4.Table 4 shows：Building waste coagulation
The thermal conductivity factor of soil is approached with concrete perforated brick.Result of the test explanation：Add in the leca concrete that intensity is LC25
Entering the building refuse concrete that the discarded concrete of certain proportion (this experiment 40%) is formed has preferable heat insulation property
Can, its thermal property has a clear superiority than normal concrete.
The thermal conductivity factor of 4 test specimen of table and common building materials
With the increase of discarded concrete intensity, the increase of leca bulk density, strength of cement increase and reduce water ash
Than etc. influence the adjustment of concrete strength factor, the intensity of gained building refuse concrete also increases.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of building refuse concrete, includes the component of following parts by weight：315 parts of cement, 135 parts of flyash, clay pottery
312 parts of grain, 637 parts of sand, 416 parts of discarded concrete, 241.2 parts of water.
2. building refuse concrete according to claim 1, it is characterised in that the particle diameter of the discarded concrete for≤
40mm。
3. building refuse concrete according to claim 2, it is characterised in that the particle diameter of the discarded concrete for 5~
40mm。
4. building refuse concrete according to claim 1, it is characterised in that intensity >=C25 of the discarded concrete.
5. building refuse concrete according to claim 1, it is characterised in that the bulk density of the leca >=
500kg/m3。
6. building refuse concrete according to claim 1, it is characterised in that the particle diameter of the leca is 5~
15mm。
7. building refuse concrete according to claim 1, it is characterised in that the cement is portland cement, fine coal
Ash concrete or pozzolan cement.
8. building refuse concrete according to claim 1, it is characterised in that the flyash is I grades of flyash of F classes.
9. building refuse concrete according to claim 1, it is characterised in that the sand is middle sand.
10. application of any one of claim 1~9 building refuse concrete in building structural element is constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248872.XA CN107915445A (en) | 2017-12-01 | 2017-12-01 | A kind of building refuse concrete and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248872.XA CN107915445A (en) | 2017-12-01 | 2017-12-01 | A kind of building refuse concrete and its application |
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| CN107915445A true CN107915445A (en) | 2018-04-17 |
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ID=61898277
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| CN201711248872.XA Pending CN107915445A (en) | 2017-12-01 | 2017-12-01 | A kind of building refuse concrete and its application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981367A (en) * | 2019-12-27 | 2020-04-10 | 甘肃土木工程科学研究院有限公司 | Ecological concrete, manufacturing method and maintenance method |
| CN113735528A (en) * | 2021-09-28 | 2021-12-03 | 高艳慧 | Rock-gathering composite wallboard and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130465A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | LC10 haydite concrete prepared from reclaimed sand and preparation method thereof |
| CN103130474A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof |
| CN104150821A (en) * | 2014-07-16 | 2014-11-19 | 广西大学 | Ceramsite recycled concrete as well as hollow block masonry and preparation method thereof |
| CN106220078A (en) * | 2016-07-08 | 2016-12-14 | 深圳广田集团股份有限公司 | A kind of mixed earth of lightweight self-compaction regeneration and preparation method thereof |
| CN106758650A (en) * | 2016-11-18 | 2017-05-31 | 天津工业化建筑有限公司 | A kind of novel ecological pervious concrete pavement |
-
2017
- 2017-12-01 CN CN201711248872.XA patent/CN107915445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130465A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | LC10 haydite concrete prepared from reclaimed sand and preparation method thereof |
| CN103130474A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | LC7.5 haydite concrete prepared from reclaimed sand and preparation method thereof |
| CN104150821A (en) * | 2014-07-16 | 2014-11-19 | 广西大学 | Ceramsite recycled concrete as well as hollow block masonry and preparation method thereof |
| CN106220078A (en) * | 2016-07-08 | 2016-12-14 | 深圳广田集团股份有限公司 | A kind of mixed earth of lightweight self-compaction regeneration and preparation method thereof |
| CN106758650A (en) * | 2016-11-18 | 2017-05-31 | 天津工业化建筑有限公司 | A kind of novel ecological pervious concrete pavement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981367A (en) * | 2019-12-27 | 2020-04-10 | 甘肃土木工程科学研究院有限公司 | Ecological concrete, manufacturing method and maintenance method |
| CN113735528A (en) * | 2021-09-28 | 2021-12-03 | 高艳慧 | Rock-gathering composite wallboard and preparation method thereof |
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Application publication date: 20180417 |