CN106277953B - C30 recycled aggregate concrete and preparation method thereof - Google Patents
C30 recycled aggregate concrete and preparation method thereof Download PDFInfo
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- CN106277953B CN106277953B CN201610580759.0A CN201610580759A CN106277953B CN 106277953 B CN106277953 B CN 106277953B CN 201610580759 A CN201610580759 A CN 201610580759A CN 106277953 B CN106277953 B CN 106277953B
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- 239000004567 concrete Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000004568 cement Substances 0.000 claims abstract description 42
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 16
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000001110 calcium chloride Substances 0.000 claims abstract description 13
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 10
- 239000000654 additive Substances 0.000 claims abstract description 9
- 230000000996 additive effect Effects 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 78
- 230000001172 regenerating effect Effects 0.000 claims description 46
- 238000010276 construction Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 18
- 239000011505 plaster Substances 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000011398 Portland cement Substances 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 9
- 229910052602 gypsum Inorganic materials 0.000 abstract description 3
- 239000010440 gypsum Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000006071 cream Substances 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses C30 recycled aggregate concrete and a preparation method thereof. The dosage of each material in each cubic concrete of the C30 recycled aggregate concrete is as follows: 110-220 kg of cement, 30-120 kg of regenerated micropowder cement admixture, 30-90 kg of regenerated micropowder, 110-220 kg of fly ash, 490-595 kg of machine-made sand, 105-210 kg of regenerated fine aggregate, 200-360 kg of regenerated coarse aggregate, 440-600 kg of broken stone, 180-190 kg of water and 5.8-7.4 g of additive, wherein the regenerated micropowder cement admixture comprises the following components in percentage by mass: CaCl2: desulfurized gypsum: the cement clinker is 2-8: 0.21-2.1: 0.1-1: 15 to 21 parts by weight. The C30 recycled aggregate concrete and the preparation method thereof have the following beneficial effects: under the premise of meeting the use performance and the durability of concrete, the waste is utilized to the maximum extent, the resources are saved, and the environment is protected.
Description
Technical field
The present invention relates to building material field, especially a kind of C30 regenerated aggregate concretes and preparation method thereof.
Background technology
With continuing to increase for China city reorganization and expansion scale and quickly propelling for building Socialist New, largely
The dismounting of old building and structures produces the building castoffs such as a large amount of concrete, brick, stone, mortar and tile fragment.According to live build
, it is expected that the year two thousand twenty China also by 30,000,000,000 square metres of New Dwelling, resulting building castoff is at least up to 5,000,000,000 in portion
Ton.Currently, building castoff does not only take up a large amount of soils largely using the disposition of the traditional approach such as air storage, landfill, and
Very big harm can be also caused to environment and personal safety.In addition, the mass production of concrete needs a large amount of exploitation high quality natural sands
Stone resource causes the severe exacerbation of natural environment.It is reduced with the storage level of natural sand, stone, the rising of cost of winning, building is useless
It is more come the research in terms of replacing natural sand stone to produce concrete that gurry is processed into recycled aggregate, but building waste is handled
Afterwards instead of cement, admixture production concrete aspect has not been reported.
Invention content
It is an object of the invention to overcome the shortcomings of above-mentioned existing background technology, it is high-strength to provide a kind of regenerative micro powder lightweight aggregate
Concrete, it is simple and feasible the present invention also provides the preparation method of this regenerative micro powder lightweight aggregate high-strength concrete.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：110 ~ 220kg of cement, regeneration
Micro mist 30 ~ 120kg of cement mixture, 30 ~ 90kg of regenerative micro powder, 110 ~ 220kg of flyash, 490 ~ 595kg of Machine-made Sand, regeneration are thin
105 ~ 210kg of aggregate, 200 ~ 360kg of regenerated coarse aggregate, 440 ~ 600kg of rubble, 180 ~ 190kg of water, 5.8 ~ 7.4g of additive, institute
The regenerative micro powder cement mixture stated is grouped as by each group of following mass ratio:Living construction rubbish powder：CaCl2：Desulfurization stone
Cream：Clinker is 2 ~ 8：0.21~2.1：0.1~1：15~21.
Preferably, the C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement 150 ~
190kg, regenerative micro powder 50 ~ 90kg of cement mixture, 40 ~ 75kg of regenerative micro powder, 180 ~ 210kg of flyash, Machine-made Sand 550 ~
570kg, 140 ~ 180kg of recycled fine aggregate, 300 ~ 320kg of regenerated coarse aggregate, 480 ~ 500kg of rubble, water 180 ~ 190kg are additional
6.1 ~ 6.8g of agent, the regenerative micro powder cement mixture are grouped as by each group of following mass ratio:Living construction rubbish powder：
CaCl2：Desulfurated plaster：Clinker is 3 ~ 6：0.5~1.8：0.4~1：18~21.
Preferably, the regenerative micro powder cement mixture is grouped as by each group of following mass ratio：Living construction rubbish powder：
CaCl2：Desulfurated plaster：Clinker is 4：1.5：1：21.
Preferably, the cement is one kind or more in 42.5 Portland cements of P.O, silicate PI or PII cement
Kind.
Preferably, the regenerative micro powder is construction waste crushing grinding to grain size≤80 μm.
Preferably, the living construction rubbish powder is that building waste is less than 30mm particles by being broken for, pre- at 400 DEG C
Ball milling 4h after processing 3h, then be placed in 600 DEG C of calcinings 2h, 0.5h and be warming up to 900 DEG C, 2h is kept the temperature, after 0.5h is cooled to room temperature
It arrives, living construction rubbish powder diameter≤80 μm.
Preferably, it is 2.3 ~ 3.0 that the recycled fine aggregate, which is construction waste crushing grinding to fineness modulus,.
Preferably, it is 5mm ~ 20mm that the regenerated coarse aggregate, which is construction waste crushing grinding to grain diameter,.
The present invention also provides the preparation methods of the C30 regenerated aggregate concretes, include the following steps：
1）The preparation of living construction rubbish powder：The living construction rubbish powder is to be less than building waste by being broken for
30mm particles pre-process ball milling 4h after 3h at 400 DEG C, then are placed in 600 DEG C of calcinings 2h, 0.5h and are warming up to 900 DEG C, keep the temperature 2h,
0.5h is obtained after being cooled to room temperature, living construction rubbish powder diameter≤80 μm；
2）The preparation of regenerative micro powder cement mixture：By step 1）Obtained living construction rubbish powder and CaCl2, desulfurization stone
Cream, clinker are according to mass ratio 4：1.5：1：21 ground and mixeds form；
3）The preparation of regenerative micro powder：Construction waste crushing grinding to grain size is less than 80 μm；
4）The preparation of recycled fine aggregate and regenerated coarse aggregate：By building waste powder crushing and grinding to fineness modulus be 2.3 ~
3.0 to get the recycled fine aggregate；By building waste powder crushing and grinding to grain diameter be 5mm ~ 20mm to get the regeneration
Coarse aggregate；Obtained recycled fine aggregate, regenerated coarse aggregate immersion are handled, the dry aggregate of saturation plane is obtained；
5）Mixing：Regenerative micro powder cement mixture, regenerative micro powder, recycled fine aggregate and the regenerated coarse aggregate that will be prepared
With material mixing described in other, that is, obtain the C30 regenerated aggregate concretes.
Compared with prior art, the beneficial effects of the present invention are：The present invention is meeting concrete performance, durability
Under the premise of energy, maximumlly waste utilization economizes on resources, environmental protection.
Specific implementation mode
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
The present embodiment provides a kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement
150kg, regenerative micro powder cement mixture 90kg, regenerative micro powder 40kg, flyash 210kg, Machine-made Sand 550kg, recycled fine aggregate
180kg, regenerated coarse aggregate 300kg, rubble 480kg, water 180kg, additive 6.8g.Specifically, the regenerative micro powder cement is mixed
Material is closed to be grouped as by each group of following mass ratio：Living construction rubbish powder：CaCl2：Desulfurated plaster：Clinker is 4：1.5：1：
21；The regenerative micro powder is that construction waste crushing grinding to grain size is less than 80 μm；The recycled fine aggregate is construction waste crushing
Grinding to fineness modulus is 2.3 ~ 3.0；The regenerated coarse aggregate is that construction waste crushing grinding to grain diameter is 5mm ~ 20mm.
The preparation method of above-mentioned C30 regenerated aggregate concretes, includes the following steps：
1）The preparation of living construction rubbish powder：Building waste is less than 30mm particles by being broken for, is pre-processed at 400 DEG C
Ball milling 4h after 3h, then be placed in 600 DEG C of calcinings 2h, 0.5h and be warming up to 900 DEG C, 2h is kept the temperature, is obtained after 0.5h is cooled to room temperature, it is living
Property building waste powder diameter≤80 μm；
2）The preparation of regenerative micro powder cement mixture：By step 1）Obtained living construction rubbish powder and CaCl2, desulfurization stone
Cream, clinker are according to mass ratio 4：1.5：1：21 ground and mixeds form；
3）The preparation of regenerative micro powder：By construction waste crushing grinding to grain size≤80 μm；
4）The preparation of recycled fine aggregate and regenerated coarse aggregate：By building waste powder crushing and grinding to fineness modulus be 2.3 ~
3.0 to get the recycled fine aggregate；By building waste powder crushing and grinding to grain diameter be 5mm ~ 20mm to get the regeneration
Coarse aggregate；Obtained recycled fine aggregate, regenerated coarse aggregate immersion are handled, the dry aggregate of saturation plane is obtained；
5）Mixing：Regenerative micro powder cement mixture, regenerative micro powder, recycled fine aggregate and the regenerated coarse aggregate that will be prepared
With material mixing described in other, that is, obtain the C30 regenerated aggregate concretes.
Embodiment 2
The present embodiment provides a kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement
190kg, regenerative micro powder cement mixture 50kg, regenerative micro powder 75kg, flyash 180kg, Machine-made Sand 570kg, recycled fine aggregate
140kg, regenerated coarse aggregate 320kg, rubble 500kg, water 190kg, additive 6.1g.Specifically, regenerative micro powder, recycled fine aggregate
It is same as Example 1 with regenerated coarse aggregate；The difference is that step 2）The living construction rubbish powder and CaCl2, desulfurization stone
Cream, clinker are according to mass ratio 2：2：0.5：21 ground and mixeds.
The preparation method of above-mentioned C30 regenerated aggregate concretes is same as Example 1.
Embodiment 3
The present embodiment provides a kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement
110kg, regenerative micro powder cement mixture 120kg, regenerative micro powder 30kg, flyash 110kg, Machine-made Sand 490kg, recycled fine aggregate
210kg, regenerated coarse aggregate 200kg, rubble 440kg, water 190kg, additive 5.8g.Specifically, the regenerative micro powder, regeneration are carefully
Aggregate and regenerated coarse aggregate are same as Example 1；The difference is that step 2）The living construction rubbish powder and CaCl2, it is de-
Sulphur gypsum, clinker are according to mass ratio 8：0.3：1：15 ground and mixeds.
The preparation method of above-mentioned C30 regenerated aggregate concretes is same as Example 1.
Embodiment 4
The present embodiment provides a kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement
220kg, regenerative micro powder cement mixture 30kg, regenerative micro powder 90kg, flyash 220kg, Machine-made Sand 595kg, recycled fine aggregate
105kg, regenerated coarse aggregate 360kg, rubble 600kg, water 180kg, additive 7.4g.Specifically, the regenerative micro powder, regeneration are carefully
Aggregate and regenerated coarse aggregate are same as Example 1；The difference is that step 2）The living construction rubbish powder and CaCl2, it is de-
Sulphur gypsum, clinker are according to mass ratio 3：0.5：0.7：18 ground and mixeds.
The preparation method of above-mentioned C30 regenerated aggregate concretes is same as Example 1.
Comparative example 1
The present embodiment provides a kind of C30 regenerated aggregate concretes, each material utilization amount is as follows in every cube of concrete：Cement
265kg, flyash 290kg, Machine-made Sand 550kg, recycled fine aggregate 150kg, regenerated coarse aggregate 300kg, rubble 480kg, water
185kg, additive 6g；Without regenerative micro powder cement mixture, regenerative micro powder.Specifically, the recycled fine aggregate and the thick bone of regeneration
Expect same as Example 1.
The preparation method of above-mentioned C30 regenerated aggregate concretes is same as Example 1.
Using concrete sample as investigation object, according to GB/T 50080-2002《Normal concrete mixture performance test
Method standard》The divergence of fresh concrete mixture；According to GB/T 50081-2002《Normal concrete mechanical property test
Method standard》, with omnipotent pressure testing machine testing example, comparative example concrete crushing strength；
Through routine test, the indices for the concrete that the embodiment is formed are seen attached list.
The performance of 1 C30 regenerated aggregate concretes of table
As it can be seen from table 1 the embodiment of the present invention can meet the requirement of standard C30 mix Designs, and it is right
Ratio comparative descriptions regenerative micro powder cement mixture, regenerative micro powder replacing partial cement are filled as micro-aggregate to concrete strength
It plays a driving role.
A kind of C30 regenerated aggregate concretes for implementing to be provided to the invention above have carried out detailed Jie
It continues, for those of ordinary skill in the art, creates the thought of embodiment according to the present invention, in specific implementation mode and apply model
There will be changes are placed, in conclusion the content of the present specification should not be construed as the limitation to the invention.
Claims (8)
1. a kind of C30 regenerated aggregate concretes, which is characterized in that each material utilization amount is as follows in every cube of concrete：Cement 110~
220kg, regenerative micro powder 30~120kg of cement mixture, 30~90kg of regenerative micro powder, 110~220kg of flyash, Machine-made Sand 490
~595kg, 105~210kg of recycled fine aggregate, 200~360kg of regenerated coarse aggregate, 440~600kg of rubble, water 180~
190kg, 5.8~7.4g of additive, the regenerative micro powder cement mixture are grouped as by each group of following mass ratio:Activity is built
Building refuse powder：CaCl2：Desulfurated plaster：Clinker is 2~8：0.21~2.1：0.1~1：15~21, the living construction rubbish
Rubbish powder is that building waste is less than 30mm particles by being broken for, and ball milling 4h after 3h is pre-processed at 400 DEG C, then be placed in 600 DEG C and forge
2h is burnt, 0.5h is warming up to 900 DEG C, keeps the temperature 2h, is obtained after 0.5h is cooled to room temperature, living construction rubbish powder diameter≤80 μm.
2. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that each material in every cube of concrete
Expect that dosage is as follows：150~190kg of cement, regenerative micro powder 50~90kg of cement mixture, 40~75kg of regenerative micro powder, flyash
180~210kg, 550~570kg of Machine-made Sand, 140~180kg of recycled fine aggregate, 300~320kg of regenerated coarse aggregate, rubble 480
~500kg, 180~190kg of water, 6.1~6.8g of additive, the regenerative micro powder cement mixture is by each of following mass ratio
Group is grouped as:Living construction rubbish powder：CaCl2：Desulfurated plaster：Clinker is 3~6：0.5~1.8：0.4~1：18~21.
3. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that the regenerative micro powder cement is mixed
Material is closed to be grouped as by each group of following mass ratio：Living construction rubbish powder：CaCl2：Desulfurated plaster：Clinker is 4：1.5：1：
21。
4. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that the cement is that P.O42.5 is general
It is one or more in logical portland cement, silicate PI or PII cement.
5. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that the regenerative micro powder is building
Refuse breaking grinding is to grain size≤80 μm.
6. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that the recycled fine aggregate is to build
Building refuse crushing and grinding to fineness modulus is 2.3~3.0.
7. a kind of C30 regenerated aggregate concretes according to claim 1, which is characterized in that the regenerated coarse aggregate is to build
Building refuse crushing and grinding to grain diameter is 5mm~20mm.
8. the preparation method of C30 regenerated aggregate concretes described in a kind of claim 1, which is characterized in that include the following steps：
1) preparation of living construction rubbish powder：The living construction rubbish powder is that building waste is less than 30mm by being broken for
Grain pre-processes ball milling 4h after 3h at 400 DEG C, then is placed in 600 DEG C of calcinings 2h, 0.5h and is warming up to 900 DEG C, keeps the temperature 2h, cold in 0.5h
But to obtaining after room temperature, living construction rubbish powder diameter≤80 μm；
2) preparation of regenerative micro powder cement mixture：The living construction rubbish powder and CaCl obtained by step 1)2, desulfurated plaster, water
Mud clinker is according to mass ratio 4：1.5：1：21 ground and mixeds form；
3) preparation of regenerative micro powder：Building waste powder crushing and grinding to grain size is less than 80 μm；
4) preparation of recycled fine aggregate and regenerated coarse aggregate：It is 2.3~3.0 by building waste powder crushing and grinding to fineness modulus,
Up to the recycled fine aggregate；It is that 5mm~20mm regenerates thick bone to get described by building waste powder crushing and grinding to grain diameter
Material；Obtained recycled fine aggregate, regenerated coarse aggregate immersion are handled, the dry aggregate of saturation plane is obtained；
5) it mixes：By the regenerative micro powder cement mixture, regenerative micro powder, recycled fine aggregate and the regenerated coarse aggregate that are prepared and its
He is mixed evenly the material, that is, obtains the C30 regenerated aggregate concretes.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108558303A (en) * | 2018-01-17 | 2018-09-21 | 同济大学 | A kind of regeneration concrete bulk and its production method |
| CN108298885B (en) * | 2018-04-04 | 2020-09-08 | 中国路桥工程有限责任公司 | Machine-made sand concrete and preparation method thereof |
| CN109675906A (en) * | 2018-11-28 | 2019-04-26 | 东莞理工学院 | A kind of wholly-owned source recycling and reusing system of building castoff |
| CN110723932A (en) * | 2019-11-04 | 2020-01-24 | 中铁建大桥工程局集团第四工程有限公司 | Underwater anti-dispersion concrete prepared from construction waste recycled aggregate |
| CN111848051B (en) * | 2020-08-04 | 2021-12-03 | 山东大学 | High-strength concrete and preparation method thereof |
| CN113072342A (en) * | 2021-04-20 | 2021-07-06 | 北京市燕通建筑构件有限公司 | Concrete containing recycled aggregate and preparation method and application thereof |
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