CN103130464B - C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof - Google Patents

C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof Download PDF

Info

Publication number
CN103130464B
CN103130464B CN201310069510.XA CN201310069510A CN103130464B CN 103130464 B CN103130464 B CN 103130464B CN 201310069510 A CN201310069510 A CN 201310069510A CN 103130464 B CN103130464 B CN 103130464B
Authority
CN
China
Prior art keywords
water
cement
concrete
regeneration aggregate
reclaimed sand
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.)
Expired - Fee Related
Application number
CN201310069510.XA
Other languages
Chinese (zh)
Other versions
CN103130464A (en
Inventor
刘桂兰
曾雷
尚百雨
高及华
张巍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Yuantaida Environmental Protection Technology Co ltd
Original Assignee
BEIJING XINAO CONCRETE GROUP CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING XINAO CONCRETE GROUP CO LTD filed Critical BEIJING XINAO CONCRETE GROUP CO LTD
Priority to CN201310069510.XA priority Critical patent/CN103130464B/en
Publication of CN103130464A publication Critical patent/CN103130464A/en
Application granted granted Critical
Publication of CN103130464B publication Critical patent/CN103130464B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention is applicable to the field of construction materials, and provides a C25 self-compaction concrete prepared from recycled aggregate and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 1 part of cement, 3.37-3.82 parts of reclaimed sand, 3.78-4.11 parts of recycled aggregate, 0.80 part of fly ash, 0.27 part of ground ore powder, 0.015 part of admixture and 0.91-0.98 part of water. The water-to-cement ratio is 0.439-0.474. The prepared C25 self-compaction concrete has the advantages of favorable filling property, favorable clearance throughput capacity, high segregation resistance and high stability, and is easy for construction. The cost of concrete is greatly lowered.

Description

A kind of C25 self-compacting concrete with regeneration aggregate preparation and preparation method thereof
Technical field
The invention belongs to building material field, relate in particular to a kind of C25 self-compacting concrete with regeneration aggregate preparation and preparation method thereof.
Background technology
Concrete is indispensable important engineering materials in modern civil construction project.And self-compacting concrete is the one of high performance concrete, its mix there is very high mobility and do not emanate, bleeding not, can be without vibrating levelling voluntarily, and be full of model and parcel reinforcing bar; Its Slump Time losing of Large is little.Because self-compacting concrete cement consumption is low, waste residue utilization rate is large, have good workability, thereby it is useless to save profit, use manpower and material resources sparingly, accelerating construction progress, reduces concrete comprehensive cost, and can solve the problem that casting concrete disturbs residents, in particular for being difficult to, build, the position that even cannot build, special-shaped part, can avoid occurring honeycomb, the even quality defect of concrete in cavity of pitted skin because the deficiency of vibrating causes.But traditional C25 self-compacting concrete is all to use natural thick, fine aggregate (natural sandstone) material, and so not only expense is high, can not carry out simultaneously country about economizing on resources, the techno-economic policy of protection of the environment.
Summary of the invention
The object of the invention is to: a kind of C25 self-compacting concrete with regeneration aggregate preparation is provided, is intended to solve the problem that existing C25 self-compacting concrete resource consumption is large, cost is high.
The object of the present invention is achieved like this:
A kind of C25 self-compacting concrete with regeneration aggregate preparation, material composition comprises cement, reclaimed sand, regeneration aggregate, flyash, ground blast furnace slag, admixture and water, between each material composition, press cement weight than being cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1:(3.37-3.82): (3.78-4.11): 0.80:0.27:0.015:(0.91-0.98), wherein, water-cement ratio is 0.439-0.474.
Further, between described concrete each material composition, by cement weight ratio, be specially cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1:3.82 ︰ 4.11 ︰ 0.80:0.27:0.015 ︰ 0.98, wherein, water-cement ratio is 0.474.
Or further, between described concrete each material composition, by cement weight ratio, be specially cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1:3.37 ︰ 3.78 ︰ 0.80:0.27:0.015 ︰ 0.91, wherein, water-cement ratio is 0.439.
Or further, between described concrete each material composition, by cement weight ratio, be specially cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1:3.59 ︰ 3.94 ︰ 0.80:0.27:0.015 ︰ 0.95, wherein, water-cement ratio is 0.47.
Wherein, described reclaimed sand is particle diameter≤5mm, fineness modulus 2.8, powder content 2.5%, clod content 0.8%, the apparent density 2640Kg/m that building waste is obtained through screening after fragmentation again 3, regeneration ratio of water dosage 1.2 reclaimed sand.
Described regeneration aggregate is continuous grading, powder content 0.9%, clod content 0.4%, water-intake rate 2.8%, crush index 11.5%, the apparent density 2650Kg/m of particle diameter 5-25mm that building waste is obtained through screening after fragmentation again 3, faller gill shape granule content 6% regeneration aggregate.
Described admixture is high-efficiency water-reducing agent of poly-carboxylic acid, and described cement is P.O42.5 ordinary Portland cement, and described ground blast furnace slag is S95 level ground blast furnace slag, and described flyash is II level flyash.
Another object of the present invention is to: a kind of preparation method of the C25 self-compacting concrete with regeneration aggregate preparation as above is provided, comprises the steps:
By proportioning, take cement, reclaimed sand, regeneration aggregate, flyash, ground blast furnace slag, admixture and water;
The water that drops into reclaimed sand, regeneration aggregate and 1/3 stirs 10 seconds;
The water and the admixture that drop into cement, flyash, ground blast furnace slag, residue 2/3 continue to stir until evenly go out machine.
Wherein, from reclaimed sand, regeneration aggregate, dropping into the churning time that stirrer to concrete goes out machine is 90-120 second.
Outstanding advantages of the present invention is: the present invention adds cement, flyash, ground blast furnace slag, admixture and water to prepare C25 self-compacting concrete by the reclaimed sand and the regenerated coarse aggregate that obtain after choosing the treated fragmentation of building waste, screening of different-grain diameter, the concrete not only making has good fillibility, gap trafficability characteristic, education resistance and stability, be easy to construction, and more environmental protection of preparation process, concrete cost is also reduced greatly.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
C25 self-compacting concrete provided by the invention adopts cement, reclaimed sand, regeneration aggregate, flyash, ground blast furnace slag, admixture, and water obtains as raw material preparation, these several stock yards are followed successively by 1:(3.37-3.82 by cement weight ratio): (3.78-4.11): 0.80:0.27:0.015:(0.91-0.98), wherein, water-cement ratio is 0.439-0.474.Described reclaimed sand is particle diameter≤5mm, fineness modulus 2.8, powder content 2.5%, clod content 0.8%, the apparent density 2640Kg/m that building waste is obtained through screening after fragmentation again 3, regeneration ratio of water dosage 1.2 reclaimed sand; Described regeneration aggregate is continuous grading, powder content 0.9%, clod content 0.4%, water-intake rate 2.8%, crush index 11.5%, the apparent density 2650Kg/m of particle diameter 5-25mm that building waste is obtained through screening after fragmentation again 3, faller gill shape granule content 6% regeneration aggregate; Described admixture is high-efficiency water-reducing agent of poly-carboxylic acid; Described cement is that bulk cement is main, preferably P.O42.5 ordinary Portland cement; Described ground blast furnace slag is S95 level ground blast furnace slag; Described flyash is II level flyash.Wherein, building waste is built, laid or remove, produces in repairerment process all kinds of buildingss, structures, pipe network etc. for construction, unit in charge of construction or individual dregs, spoir, remaining mud and other wastes.
The preparation method of the C25 self-compacting concrete with regeneration aggregate preparation provided by the invention is as follows:
Step 1, by proportioning, take starting material;
Step 2, the water that drops into reclaimed sand, regeneration aggregate and 1/3 stir 10 seconds;
Step 3, the water that drops into cement, flyash, ground blast furnace slag, residue 2/3 and admixture continue to stir until evenly go out machine.
Wherein, from reclaimed sand, regeneration aggregate, drop into the churning time that stirrer to concrete goes out machine and be preferably 90-120 second.
After going out machine, C25 self-compacting concrete with regeneration aggregate preparation provided by the invention to newly mixing self-compacting concrete, carries out respectively fillibility test by the regulation of national standard method GB/T50080-2002 < < Standard for test methods of properties of ordinary concrete mixture standard > > and JGJ/T283-2012 < < self-compacting concrete utilisation technology rules > >, its result is divergence 650-750mm, expansion time 3.5s-4.5s, gap trafficability characteristic test result is 22mm, education resistance test result is 16%, and stability test result is 7%, and going out after machine, through slump test in 30 minutes, be 260mm, divergence is 620-700mm, through slump test in 60 minutes, be 255mm, divergence is 590-650mm.Visible, test result is good, meets the desired properties data target of self-compacting concrete.
In one embodiment of the invention, the material composition proportioning (cement weight ratio) of preparation C25 self-compacting concrete is cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1 ︰ 3.82 ︰ 4.11 ︰ 0.80:0.27:0.015 ︰ 0.98, wherein, water-cement ratio is 0.474.By the water that first drops into reclaimed sand, regeneration aggregate and 1/3, stir after 10 seconds, then the water and the admixture that drop into cement, flyash, ground blast furnace slag, residue 2/3 stir until evenly.
The self-compacting concrete of mixing is moulding in 15min after mixing, during test, concrete mix good mixing is mixed three times more back and forth, not stratifiedly once packs die trial into, and when filling with substance plugs and pounds along each die trial wall with spatula, and makes concrete mix exceed die trial mouth.And during self-compacting concrete moulding, do not use shaking table or plug and pound method moulding.Strike off die trial unnecessary concrete suitable for reading floating with spatula, put into concrete curing box and carry out maintenance.24 as a child form removals, after form removal, test block is moved to concrete mark and carry out maintenance (mark support between 20 ± 2 ℃ of temperature, humidity >=95%) in supporting, in the age of concrete, reaching 28 days takes out afterwards, the method that adopts < < GB/T 50081-2002 standard for test methods of mechanical properties of ordinary concrete > > to provide is carried out intensity detection, intensity reaches 26.9Mp, conformance with standard.
In another embodiment of the present invention, the material composition proportioning (cement weight ratio) of preparation C25 self-compacting concrete is cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1 ︰ 3.37 ︰ 3.78 ︰ 0.80:0.27:0.015 ︰ 0.91, wherein, water-cement ratio is 0.439.The C25 self-compacting concrete making according to this proportioning and above-mentioned preparation method, adopts above-mentioned same testing method to carry out intensity detection to it, and intensity reaches 33.4Mp, conformance with standard.
And in a preferred embodiment of the invention, the material composition proportioning (cement weight ratio) of preparation C25 self-compacting concrete is cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1 ︰ 3.59 ︰ 3.94 ︰ 0.80:0.27:0.015 ︰ 0.95, wherein, water-cement ratio is 0.47.The C25 self-compacting concrete making according to this proportioning and above-mentioned preparation method, it is adopted to above-mentioned same testing method, in the age of concrete, reach 3 days, 7 days, in the time of 28 days, concrete is taken out, the method that adopts < < GB/T 50081-2002 standard for test methods of mechanical properties of ordinary concrete > > to provide is carried out intensity detection to concrete, its intensity is respectively 14.35 Mp, 22.50Mp, 30.2Mp, conformance with standard, press JGJ/T283-2012 < < self-compacting concrete utilisation technology rules > > to concrete fillibility simultaneously, gap trafficability characteristic, education resistance and stability are tested, its result also meets the desired every data target of self-compacting concrete, and on cost every cubic metre can save 24.5 yuan.
The present invention adds cement, flyash, ground blast furnace slag, admixture and water to prepare C25 self-compacting concrete by the reclaimed sand and the regenerated coarse aggregate that obtain after choosing the treated fragmentation of building waste, screening of different-grain diameter; not only construction refuse resource is recycled; carried out national about economizing on resources, the techno-economic policy of protection of the environment; and owing to utilizing solid waste; greatly reduce concrete cost; and the concrete making has good fillibility, gap trafficability characteristic, education resistance and stability, be easy to construction.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (1)

1. a preparation method for the C25 self-compacting concrete of preparing with regeneration aggregate, is characterized in that, comprises the steps:
By proportioning, take cement, reclaimed sand, regeneration aggregate, flyash, ground blast furnace slag, admixture and water;
The water that drops into reclaimed sand, regeneration aggregate and 1/3 stirs 10 seconds;
The water and the admixture that drop into cement, flyash, ground blast furnace slag, residue 2/3 continue to stir until evenly go out machine;
The churning time that goes out machine from reclaimed sand, regeneration aggregate input stirrer to concrete is 90-120 second;
Wherein, between described concrete each material composition, by cement weight ratio, be specially cement: reclaimed sand: regeneration aggregate: flyash: ground blast furnace slag: admixture: water=1: 0.80: 0.27: 0.015 ︰ 0.98 of 3.82 ︰ 4.11 ︰, wherein, water-cement ratio is 0.474;
Described reclaimed sand is particle diameter≤5mm, fineness modulus 2.8, powder content 2.5%, clod content 0.8%, the apparent density 2640Kg/m that building waste is obtained through screening after fragmentation again 3, regeneration ratio of water dosage 1.2 reclaimed sand;
Described regeneration aggregate is continuous grading, powder content 0.9%, clod content 0.4%, water-intake rate 2.8%, crush index 11.5%, the apparent density 2650Kg/m of particle diameter 5-25mm that building waste is obtained through screening after fragmentation again 3, faller gill shape granule content 6% regeneration aggregate;
Described admixture is high-efficiency water-reducing agent of poly-carboxylic acid, and described cement is P.O42.5 ordinary Portland cement, and described ground blast furnace slag is S95 level ground blast furnace slag, and described flyash is II level flyash.
CN201310069510.XA 2013-03-05 2013-03-05 C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof Expired - Fee Related CN103130464B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310069510.XA CN103130464B (en) 2013-03-05 2013-03-05 C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310069510.XA CN103130464B (en) 2013-03-05 2013-03-05 C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof

Publications (2)

Publication Number Publication Date
CN103130464A CN103130464A (en) 2013-06-05
CN103130464B true CN103130464B (en) 2014-05-07

Family

ID=48490977

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310069510.XA Expired - Fee Related CN103130464B (en) 2013-03-05 2013-03-05 C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof

Country Status (1)

Country Link
CN (1) CN103130464B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103936368B (en) * 2014-04-18 2016-05-04 张家港江苏科技大学产业技术研究院 C40 level simple grain level regeneration self-compacting concrete and preparation method thereof
CN105801018A (en) * 2014-12-30 2016-07-27 叶腾 C25 full-recycled-aggregate concrete and preparation method thereof
CN106277953B (en) * 2016-07-21 2018-07-24 武汉源锦商品混凝土有限公司 A kind of C30 regenerated aggregate concretes and preparation method thereof
CN106242393A (en) * 2016-07-25 2016-12-21 铜陵海源超微粉体有限公司 A kind of C25 concrete formulating method
CN106277955A (en) * 2016-07-25 2017-01-04 铜陵海源超微粉体有限公司 A kind of C30 concrete formulating method
CN114890741A (en) * 2022-05-11 2022-08-12 中建八局第二建设有限公司 Low-carbon self-leveling lightweight concrete and preparation method and construction method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101391880A (en) * 2007-09-17 2009-03-25 寇全有 Lightweight concrete material from cast-in-situ wall construction waste and production and use method thereof
CN102476931A (en) * 2010-11-26 2012-05-30 周立志 Green recycled building material
CN102091482B (en) * 2010-12-22 2012-10-31 北京工业大学 Concrete water filter pipe

Also Published As

Publication number Publication date
CN103130464A (en) 2013-06-05

Similar Documents

Publication Publication Date Title
CN103121819B (en) C30 self-compacting concrete prepared from recycled aggregate and preparation method thereof
CN103130465B (en) LC10 haydite concrete prepared from reclaimed sand and preparation method thereof
Liu et al. Effects of SCMs particles on the compressive strength of micro-structurally designed cement paste: Inherent characteristic effect, particle size refinement effect, and hydration effect
CN103130464B (en) C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof
CN104529333B (en) A kind of discarded fired brick regeneration C30 concrete and preparation method thereof
CN101870562B (en) Precision casting waste sand reusing method
CN105601135B (en) A method of using red mud and coal ash for manufacturing for geology polymer material
CN104829178A (en) C30 grade steel-doped slag recycled aggregate self compacting concrete and preparation method thereof
CN107200526A (en) C40 grades are mixed slag regeneration aggregate self-compacting concrete and preparation method thereof
CN108706928A (en) A kind of brick concrete mixed regeneration coarse aggregate concrete and preparation method thereof
CN107879681B (en) Concrete slurry, alkali-activated light rubber recycled concrete and preparation method thereof
CN103130463B (en) C15 concrete prepared from recycled aggregate and preparation method thereof
CN107686298A (en) A kind of self-compaction composite concrete and preparation method thereof
CN108911623A (en) A kind of polypropylene fibre regeneration brick concrete coarse aggregate concrete and its preparation process
CN104556905A (en) Waste sintered brick recycled C25 concrete and preparation method thereof
CN102351477B (en) Mixture for preparing C55 high-intensity ultra-high-pumping concrete
CN104496339B (en) It is concrete segment of gathering materials and preparation method thereof that a kind of raw material contains shellfish housing
CN108689659A (en) A kind of construction refuse regenerated mixture of cement stabilizing and preparation method thereof
CN103130472B (en) C10 concrete prepared from recycled aggregate and preparation method thereof
CN115073093A (en) Low-shrinkage high-strength self-compacting recycled concrete and preparation method thereof
CN103130473B (en) C20 self-compaction concrete prepared from recycled aggregate and preparation method thereof
CN106316302A (en) C20-level self-compacting concrete with steel slag and recycled aggregates and preparation method of C20-level self-compacting concrete
CN110041025A (en) A kind of ameliorative mass concrete and preparation method thereof
CN102690093A (en) High-strength water resistance phosphogypsum steam-cured brick and preparation method thereof
CN109095834B (en) Method for preparing recycled concrete by using unqualified premixed concrete and recycled powder

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20151210

Address after: 102200 Beijing City, Changping District Yang Fang Zhen Shi Jia Qiao Cun four history Road No. 603

Patentee after: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION BUILDING MATERIAL TECHNOLOGY Co.,Ltd.

Address before: 100076 No. 34, South District, old industrial park, old town, Beijing, Daxing District

Patentee before: Beijing Xinao Concrete Group Co.,Ltd.

C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 102200 Beijing City, Changping District Yang Fang Zhen Shi Jia Qiao Cun four history Road No. 603

Patentee after: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD.

Address before: 102200 Beijing City, Changping District Yang Fang Zhen Shi Jia Qiao Cun four history Road No. 603

Patentee before: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION BUILDING MATERIAL TECHNOLOGY Co.,Ltd.

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof

Effective date of registration: 20160506

Granted publication date: 20140507

Pledgee: Lin Qing

Pledgor: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD.

Registration number: 2016990000361

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20160614

Granted publication date: 20140507

Pledgee: Lin Qing

Pledgor: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD.

Registration number: 2016990000361

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof

Effective date of registration: 20160614

Granted publication date: 20140507

Pledgee: Hunchun phoenix tree equity investment centre (L.P.)

Pledgor: BEIJING YUANTAIDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD.

Registration number: 2016990000481

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PP01 Preservation of patent right
PP01 Preservation of patent right

Effective date of registration: 20170721

Granted publication date: 20140507

PD01 Discharge of preservation of patent
PD01 Discharge of preservation of patent

Date of cancellation: 20200721

Granted publication date: 20140507

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140507