CN108751864A - A kind of recycled concrete block and preparation method thereof - Google Patents
A kind of recycled concrete block and preparation method thereof Download PDFInfo
- Publication number
- CN108751864A CN108751864A CN201810785304.1A CN201810785304A CN108751864A CN 108751864 A CN108751864 A CN 108751864A CN 201810785304 A CN201810785304 A CN 201810785304A CN 108751864 A CN108751864 A CN 108751864A
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- China
- Prior art keywords
- concrete block
- recycled concrete
- water
- recycled
- thickener
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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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to New Building Materials technical fields, and in particular to a kind of recycled concrete block and preparation method thereof.The present invention provides a kind of recycled concrete blocks, including cement, water, mud ceramic granules and thickener.The present invention also provides a kind of preparation methods including above-mentioned recycled concrete block, include the following steps：Step 1：Cement, water, mud ceramic granules and thickener are mixed to get concrete mix；Step 2：The concrete mix is molded by concreting in lifts method, obtains recycled concrete block.A kind of recycled concrete block provided by the invention and preparation method thereof, solving in the prior art can not insulation and the technical issues of lightweight wall.
Description
Technical field
The present invention relates to New Building Materials technical fields, and in particular to a kind of recycled concrete block and its preparation side
Method.
Background technology
Traditional wall thermal insulating measure mainly sets various thermal insulation materials in exterior wall peripheral hardware, but this traditional heat preservation side
Method defect existing in safety, reliability and fire line is gradually exposed.It is further with building energy conservation requirement
The further development of high stratification trend is improved and builds, people are higher and higher to the lightweight of construction wall, thermal requirements.
Therefore developing a kind of lightweight wall material with thermal and insulating performance, to become those skilled in the art urgently to be resolved hurrily
The technical issues of.
Invention content
In view of this, the present invention provides a kind of recycled concrete block and preparation method thereof, solve in the prior art
It can not insulation and the technical issues of lightweight wall.
The present invention provides a kind of recycled concrete blocks, including cement, water, mud ceramic granules and thickener.
Preferably, the recycled concrete block, by weight, including 130~310 parts of cement, 140~180 parts of water,
0.05~0.1 part of 240~260 parts of mud ceramic granules and thickener.
It is furthermore preferred that the portland cement that it is 42.5 that the cement, which is strength grade,.
It is furthermore preferred that the mud ceramic granules belong to super light aggregate, it is ball-shaped haydite, particle size is 5~10mm, heap
Product density is 400~500kg/m3, belong to super light aggregate, the water absorption rate of haydite 1h is 13.80%, water absorption rate for 24 hours
18.38%, the cylindrical compress strength of mud ceramic granules is 1.0~2.0MPa.；
Preferably, the thickener is carboxymethyl cellulose acid sodium.
Preferably, the recycled concrete block further includes recycled fine aggregate.
It is furthermore preferred that the garbage concrete block after the recycled fine aggregate is removed by building is made after crushing and screening.
Wherein, crushing and screening specifically includes, and is sieved using manual method and removes the impurity such as bulk reinforcing bar, timber and plastics.Screening machine is used again
Carry out the impurity that first screening removal grain size is 0.075~0.15mm.Through jaw crusher primary crushing, then through magnetic separator
Remove scrap iron removing impurity.The light impurities such as wood fragments bits, plastics are separated off through centrifuge, the regrading for carrying out aggregate removes grain size
For the regenerated coarse aggregate of 5~20mm, fineness modulus is 2.3~2.9.
It should be noted that by adding recycled fine aggregate in the recycled concrete block, it can be by garbage concrete
Block carries out secondary use, to further solve the huge building waste processing cost removed by building and building reconstruction generates
Problem and problem of environmental pollution.
Preferably, the recycled concrete block further includes by weight 200~510 parts of recycled fine aggregate.
Preferably, the recycled concrete block further includes slag.
Preferably, the recycled concrete block further includes by weight 130~310 parts of slag.
It is furthermore preferred that the slag is S95 grades of slags, specific surface area is 460~510m2/kg。
Preferably, the recycled concrete block further includes concrete air-entrainer, water-reducing agent and natural sand.
It should be noted that water-reducing agent can reduce the dosage of water by appropriateness, the intensity of the concrete segment is improved
Preferably, the recycled concrete block further includes 0.1~0.15 part of concrete air-entrainer, subtracts by weight
180~620 parts of aqua 5~6 and natural sand.
It is furthermore preferred that the concrete air-entrainer is SJ-2 concrete air-entrainers.The water-reducing agent is a concentration of 20%
QL-PC2 polycarboxylate water-reducers.
The present invention also provides a kind of preparation methods including above-mentioned recycled concrete block, include the following steps：
Step 1：Cement, mud ceramic granules, water and thickener are mixed to get concrete mix；
Step 2：The concrete mix is molded by concreting in lifts method, obtains recycled concrete block.
It is furthermore preferred that further including that mud ceramic granules are carried out saturation to prewet and dry before the step 1.
It should be noted that mud ceramic granules can be further prevented to float by being saturated pre-wetted treatment, concrete block is improved
The compactness of block.
A kind of recycled concrete block provided by the invention, including mud ceramic granules, cement and thickener, wherein mud ceramic granules
It is fired through high-temperature expansion using bed-silt, has the characteristics that density is low, porosity is high, anti-freezing property is good.The present invention
A kind of preparation method of recycled concrete block is additionally provided, it, can be with by adding thickener and being molded using placement layer by layer method
Mud ceramic granules are avoided to be less than water laminated segregation phenomenon to caused by due to density so that the recycled concrete block is more encrypted
It is real.Recycled concrete block obtained by this method, it is at low cost, and since mud ceramic granules density is low, voidage is high, makes the coagulation
Earth building blocks have both the advantages of insulation and lightweight wall, are conducive to produce in enormous quantities.By the recycled concrete block for building
In building, building structure can be significantly reduced and conduct oneself with dignity and be effectively improved buildings exterior-protected structure.Regeneration prepared by the embodiment of the present invention is mixed
Solidifying its heat conduction system of earth building blocks substantially reduces, and effectively raises its thermal and insulating performance.Its specific strength (compression strength with it is apparent close
The ratio of degree) it is significantly larger than existing concrete segment, it is effectively raised on the basis of ensureing light-weighted is resistant to intensity.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to guarantor of the present invention
The range of shield.
Raw material used in recycled concrete block provided by the invention and preparation method thereof and reagent can be purchased by market
?.
Just a kind of recycled concrete block provided by the present invention and preparation method thereof is described further below.
Embodiment 1
In the present embodiment, per m3Including following component：It is mud ceramic granules 257.40kg, slag 132kg, cement 308kg, natural
Sand 371.45kg, recycled fine aggregate 202.54kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg and
Water 146.48kg.
The preparation process of recycled concrete block in the present embodiment, specific steps include：
(1) saturation pre-wetted treatment is carried out to mud ceramic granules, and it is spare to saturated dry surface to dry in the air.
(2) according to above-mentioned quality proportioning, cement, slag, mud ceramic granules, recycled fine aggregate are put into dry mixing in blender
30s obtains the first mixture.
(3) water, water-reducing agent, thickener and air entraining agent are stirred into 150s, obtains concrete mix.
(4) concrete mix is poured into wooden model at twice, is poured for the first time to 1/3 wooden model eminence, and manual plugs and pounds
15 times；It pours for the second time to the high position of mould, is molded to obtain preset recycled concrete block using surface vibrator vibration 5s.
(5) above-mentioned preset recycled concrete block carries out block surfaces using plastering tool every 1h in 3~5h
Plastering compaction treatment.
Embodiment 2
In the present embodiment per m3Including following component：Mud ceramic granules 257.40kg, slag 132kg, cement 308kg, day
Right sand 185.72kg, recycled fine aggregate 354.45kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg
With water 161.29kg.
The preparation process of recycled concrete block is same as the previously described embodiments in the present embodiment.
Embodiment 3
Per m in the present embodiment3Including following component：Mud ceramic granules 257.40kg, slag 132kg, cement 308kg, regeneration
Fine aggregate 506.35kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg and water 176.11kg.
The preparation process of recycled concrete block is same as the previously described embodiments in the present embodiment.
Embodiment 4
Per m in the present embodiment3Including following component：Mud ceramic granules 257.40kg, slag 220kg, cement 220kg, regeneration
Fine aggregate 506.35kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg and water 176.11kg.
The preparation process of recycled concrete block is same as the previously described embodiments in the present embodiment.
Embodiment 5
Per m in the present embodiment3Including following component：Mud ceramic granules 257.40kg, slag 308kg, cement 132kg, regeneration
Fine aggregate 506.35kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg and water 176.11kg.
Comparative example 1
Per m in this comparative example3Including following component：Natural aggregate 1043.90kg, slag 0kg, cement 440kg, regeneration are thin
Aggregate 0kg, water-reducing agent 5.28kg, thickener 0.09kg, concrete air-entrainer 0.13kg and water 158.40kg.
The preparation process of recycled concrete block is same as the previously described embodiments in this comparative example.
In conclusion the recycled concrete block performance prepared in above-described embodiment 1~5 is as shown in table 1：
Recycled concrete block performance prepared by 1 Examples 1 to 5 of table and comparative example 1
As shown in Table 1, comparative example 1 makes the heat conduction system of its concrete segment prepared due to lacking mud ceramic granules and slag
Number is significantly larger than the data result of concrete segment prepared by Examples 1 to 5, and thermal coefficient is bigger, and thermal and insulating performance is poorer,
It can be seen that comparative example 1, due to lacking mud ceramic granules and slag, heat conductivility compares well below the embodiment of the present invention
Intensity is the ratio of compression strength and apparent density, and the bigger concrete of ratio more lightweight, intensity is higher, it can be seen that this hair
Bright embodiment makes concrete segment obtained realize lightweight and high intensity, by this due to being added to mud ceramic granules and slag
During recycled concrete block is for building, building structure can be significantly reduced and conduct oneself with dignity and be effectively improved buildings exterior-protected structure.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of recycled concrete block, which is characterized in that including cement, water, mud ceramic granules and thickener.
2. recycled concrete block according to claim 1, which is characterized in that by weight, including cement 130~
0.05~0.1 part of 310 parts, 140~180 parts of water, 240~260 parts of mud ceramic granules and thickener.
3. recycled concrete block according to claim 1, which is characterized in that the thickener is carboxymethyl cellulose acid
Sodium.
4. recycled concrete block according to claim 1, which is characterized in that further include recycled fine aggregate.
5. recycled concrete block according to claim 2, which is characterized in that further include the thin bone of regeneration by weight
200~510 parts of material.
6. recycled concrete block according to claim 4, which is characterized in that further include slag.
7. recycled concrete block according to claim 5, which is characterized in that by weight, further include slag 130~
310 parts.
8. recycled concrete block according to claim 6, which is characterized in that further include concrete air-entrainer, water-reducing agent
And natural sand.
9. recycled concrete block according to claim 7, which is characterized in that further include that concrete draws by weight
180~620 parts of 0.1~0.15 part of gas agent, water-reducing agent 5~6 and natural sand.
10. a kind of preparation method including recycled concrete block as described in any one of claim 1 to 9, which is characterized in that
Include the following steps：
Step 1：Cement, mud ceramic granules, water and thickener are mixed to get concrete mix；
Step 2：The concrete mix is molded by concreting in lifts method, obtains recycled concrete block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785304.1A CN108751864A (en) | 2018-07-17 | 2018-07-17 | A kind of recycled concrete block and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785304.1A CN108751864A (en) | 2018-07-17 | 2018-07-17 | A kind of recycled concrete block and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108751864A true CN108751864A (en) | 2018-11-06 |
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ID=63970231
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810785304.1A Pending CN108751864A (en) | 2018-07-17 | 2018-07-17 | A kind of recycled concrete block and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624683A (en) * | 2020-09-25 | 2021-04-09 | 北京新奥混凝土集团有限公司 | Lightweight concrete |
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|---|---|---|---|---|
| US4873207A (en) * | 1986-10-30 | 1989-10-10 | Keller Jr Fred | Ceramic aggregate for roadway composition and method of producing same |
| CN104817296A (en) * | 2015-04-16 | 2015-08-05 | 福建江夏学院 | Ceramsite recycled concrete self-insulation material and preparation method thereof |
| CN106966668A (en) * | 2017-05-03 | 2017-07-21 | 广东工业大学 | A kind of haydite regeneration concrete slurry and preparation method thereof |
| CN107540291A (en) * | 2017-11-01 | 2018-01-05 | 广东工业大学 | A kind of concrete slurry and preparation method thereof |
-
2018
- 2018-07-17 CN CN201810785304.1A patent/CN108751864A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4873207A (en) * | 1986-10-30 | 1989-10-10 | Keller Jr Fred | Ceramic aggregate for roadway composition and method of producing same |
| CN104817296A (en) * | 2015-04-16 | 2015-08-05 | 福建江夏学院 | Ceramsite recycled concrete self-insulation material and preparation method thereof |
| CN106966668A (en) * | 2017-05-03 | 2017-07-21 | 广东工业大学 | A kind of haydite regeneration concrete slurry and preparation method thereof |
| CN107540291A (en) * | 2017-11-01 | 2018-01-05 | 广东工业大学 | A kind of concrete slurry and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624683A (en) * | 2020-09-25 | 2021-04-09 | 北京新奥混凝土集团有限公司 | Lightweight concrete |
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Application publication date: 20181106 |