CN103936368A - Grade-C40 single-particle regenerated self-compaction concrete and preparation method thereof - Google Patents
Grade-C40 single-particle regenerated self-compaction concrete and preparation method thereof Download PDFInfo
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- CN103936368A CN103936368A CN201410158303.6A CN201410158303A CN103936368A CN 103936368 A CN103936368 A CN 103936368A CN 201410158303 A CN201410158303 A CN 201410158303A CN 103936368 A CN103936368 A CN 103936368A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a Grade-C40 single-particle regenerated self-compaction concrete. The invention is characterized in that the Grade-C40 single-particle regenerated self-compaction concrete is prepared from the following raw materials in parts by weight: 1 part of cement, 0.63-1.38 parts of regenerated coarse aggregate, 0.61-1.48 parts of natural coarse aggregate, 1.71 parts of fine aggregate, 0.40 part of water, 0.03-0.07 part of additional water, 0.25 part of fly ash and 0.007-0.010 part of admixture. The water-binder ratio of the self-compaction concrete is 0.32. The flowability, filling property, segregation resistance, gradual loss and strength of the regenerated self-compaction concrete satisfy related requirements. The regenerated self-compaction concrete is convenient for construction, and lowers the production cost of the concrete. The regenerated self-compaction concrete solves the problem of treatment of construction waste, relieves the pressure of resource depletion, and is green and environment-friendly; and the preparation method is simple and suitable for industrial production.
Description
Technical field
The invention belongs to building material technical field, what be specifically related to is that a kind of discarded concrete that contains a small amount of brickbat in building demolition thing that adopts replaces as simple grain level regenerated coarse aggregate the method that part natural coarse aggregate is prepared the self-compacting concrete of regenerating.
Background technology
Self-compacting concrete (Self Compacting Concrete or Self-Consolidating Concrete are called for short SCC) refers under self gravitation effect, can flow, closely knit, even if there is also filling template completely of fine and close reinforcing bar, obtain fine uniformity simultaneously, and do not need the concrete of extraneous vibration.Preparation self-compacting concrete is the selection by admixture, consolidating material and coarse-fine aggregate and collocation and meticulous mix-design generally, concrete yielding stress is reduced to the shearing stress being enough to by producing because of deadweight to be overcome, concrete flowability is increased, there is again enough plastic viscosities simultaneously, make aggregate be suspended in grout, there is not segregation and bleeding problem, can freely trickle and abundant filling template in space, form closely knit and uniform jelling structure.
Remove and the shortening in buildings work-ing life itself has caused a large amount of building waste concretes.And at present about the research of regeneration concrete, mainly concentrate on and utilize discarded concrete to be processed into regeneration aggregate to prepare normal concrete.Self-compacting concrete is a kind of high performance concrete, there is very high mobility and in casting process, do not emanate, bleeding not, can be full of without vibrating the concrete of masterplate and parcel reinforcing bar.What existing regeneration aggregate was prepared self-compacting concrete employing is all the regeneration aggregate of continuous grading, and the regeneration aggregate production process of continuous grading is loaded down with trivial details.The present invention therefore.
Summary of the invention
The object of the invention is to provide a kind of C40 level simple grain level regeneration self-compacting concrete, and having solved self-compacting concrete in prior art needs the regeneration aggregate of continuous grading to produce, and operation is numerous and diverse, and the raw materials cost needing is compared with high-technology problem.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of C40 level simple grain level regeneration self-compacting concrete, the feed composition that it is characterized in that described self-compacting concrete is cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, and the water-cement ratio of self-compacting concrete is 0.32; Wherein mark calculating feed composition is by weight:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63～1.38 parts by weight;
Natural coarse aggregate 0.61～1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03～0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007～0.010 parts by weight.
In preferred technical scheme: described self-compacting concrete by weight mark calculating feed composition is:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63～1.02 parts by weight;
Natural coarse aggregate 1.02～1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03～0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007～0.010 parts by weight.
In preferred technical scheme: described self-compacting concrete by weight mark calculating feed composition is:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.02～1.38 parts by weight;
Natural coarse aggregate 0.61～1.02 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03～0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007～0.010 parts by weight.
In preferred technical scheme: described self-compacting concrete by weight mark calculating feed composition is:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63 parts by weight;
Natural coarse aggregate 1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.010 parts by weight.
In preferred technical scheme: described self-compacting concrete by weight mark calculating feed composition is:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.02 parts by weight;
Natural coarse aggregate 1.02 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.05 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.008 parts by weight.
In preferred technical scheme: described self-compacting concrete by weight mark calculating feed composition is:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.38 parts by weight;
Natural coarse aggregate 0.61 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007 parts by weight.
In preferred technical scheme: described regenerated coarse aggregate be by by the discarded concrete in building waste through sorting, broken and screening, removal is less than 9.50mm and is greater than after the particle of 20mm, is processed into aggregate size scope and is regenerated coarse aggregate in the particle diameter section of 10～20mm.
In preferred technical scheme: described natural coarse aggregate adopts the rubble of 5～20mm continuous size fraction, and apparent density is 2.75g/cm
3, tap density is 1.35g/cm
3, water-intake rate is 0.45%.
In preferred technical scheme: the apparent density of described regenerated coarse aggregate is controlled at 2.35g/cm
3, tap density is controlled at 1.23g/cm
3, water-intake rate is controlled at 4.76%.
In preferred technical scheme: described fine aggregate is medium sand; Described cement is PO42.5 ordinary Portland cement; Described flyash is I level flyash.
The preparation method who another object of the present invention is to provide a kind of described C40 level simple grain level regeneration self-compacting concrete, is characterized in that said method comprising the steps of:
(1) preparation of regenerated coarse aggregate: the discarded concrete in building waste, through sorting, broken and screening, is removed and is less than 9.50mm and is greater than after the particle of 20mm, be processed into regenerated coarse aggregate with aggregate size in 10～20mm particle diameter section;
(2) by proportioning, take cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, according to the order of regenerated coarse aggregate, natural coarse aggregate, fine aggregate, cement, flyash and admixture, feed intake and then start stirrer, dry mixing 1～2min;
(3) add load weighted water and additional water, continue to stir 1～2min and obtain described C40 level simple grain level regeneration self-compacting concrete.
Term explanation
Cement in technical solution of the present invention, includes but not limited to silicate cement or other mixed cements etc.Wherein silicate cement, includes but not limited to low-heat portland cement, ordinary Portland cement, early strength silicate cement, super early strength silicate cement, moderate-heat portland cement, sulfate resisting Portland cement etc.In addition, mixed cement, includes but not limited to blast furnace cement, silica cement, pulverized fuel ash cement etc.As cement, silicate cement is preferred, and wherein, ordinary Portland cement, moderate-heat portland cement or low-heat portland cement are preferred.The label of cement is the index of cement " intensity ".The intensity of cement means the size that unit surface is stressed, after referring to that cement adds water and mixes and stirs, the solid degree after condensing, hardening (intensity of cement with form cement mineralogical composition, particle fineness, sclerosis time temperature, humidity and cement in to add the factors such as ratio of water relevant).It is 42.5 ordinary Portland cement that PO42.5 ordinary Portland cement is strength grade.
As for concrete aggregate, can list coarse aggregate and fine aggregate.Here, in self-compacting concrete, add coarse aggregate and the fine aggregate as aggregate.As coarse aggregate, can list river gravel, sea gravel, mountain gravel, rubble, slag rubble etc., as fine aggregate, can list river sand, extra large sand, mountain sand etc.In addition, coarse aggregate and fine aggregate can be distinguished according to common classification (screening etc.).
In addition,, in this concrete, from obtaining the viewpoint of sufficient intensity, consider every 1m
3this concrete is preferably 700～1000kg, more preferably 800～900kg, in addition, the every 1m of the content of coarse aggregate
3concrete is preferably 800～1100kg, more preferably 850～950kg.This concrete for example can obtain in the following way: cement additive, flyash are added in cement, form cement composition, then water and aggregate are added in this cement composition and mixed, obtain thus.Yet, due to concrete of the present invention, as long as contain above-mentioned cement additive in it forms, therefore, can when prepared by concrete, add.Described fine aggregate is medium sand, and described admixture is polycarboxylate water-reducer, and described cement is PO42.5 ordinary Portland cement, and described flyash is I level flyash.
In addition, in concrete, further contain concrete admixture.Concrete admixture is to mix in ready-mixed concrete process, accounts for cement quality below 5%, can significantly improve concrete performance.As preferably, concrete admixture is water reducer.As water reducer, can apply ad lib water reducer, AE water reducer, high-performance water reducing agent, high performance AF dehumidifying agent etc. as the known material of the water reducer using in concrete.The water reducer of polycarboxylic acid system is preferred.The content of water reducer in cement composition is preferably 0.8～3.0 quality %.In addition, water reducer can not contain as cement additive, but adds when preparing concrete.
High-performance water reducing agent, includes but not limited to naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid and aliphatic high-efficiency water reducing agent.Wherein naphthalene series high-efficiency water-reducing agent is naphthalenesulfonate formaldehyde condensation compound.Aliphatic high-efficiency water reducing agent is the burnt aldehyde of the synthetic carbonyl of acetone sulfonation.Polycarboxylate water-reducer (Polycarboxylate Superplasticizer) is a kind of high-performance water reducing agent, it is a kind of cement dispersants during cement concrete uses, chemically can be divided into two classes, take main chain as methacrylic acid, side chain is hydroxy-acid group and MPEG (Methoxy polyethylene glycol), polyester type structure.Another for main chain be polyacrylic acid, side chain is Vinyl alcohol polyethylene glycol, polyether-type structure.
Aggregate plays the granular loose material of skeleton or filling effect in concrete.Aggregate, as the main raw material in concrete, plays skeleton and supporting role in buildings.The aggregate that particle diameter is greater than 4.75mm is called coarse aggregate, is commonly called as stone.Conventional have two kinds, rubble and a cobble.Rubble is that natural rock or rock are made through Mechanical Crushing, screening, and particle diameter is greater than the rock particles of 4.75mm.Cobble is by weathering, potamic transport and sorting, accumulation form, particle diameter is greater than 4.75mm rock particles.2.4 times of persons of median size that the length of cobble and gravel particle is greater than the affiliated corresponding grade of this particle are elongated piece; Thickness is less than 0.4 times of person of median size for platy shaped particle (median size refers to the mean value of this grade superior and inferior limit of particle size).Cobble for building, rubble should meet the technical requirements of standard GB/T/T14685-2001 < < cobble for building, rubble > >.Aggregate below particle diameter 4.75mm is called fine aggregate, is commonly called as sand.Sand is divided into natural sand, artificial sand two classes by product source.Natural sand is by the rock particles that weathering, potamic transport and sorting, accumulation form, particle diameter is less than 4.75mm, but do not comprise the particle of soft rock, weathered rock.Natural sand comprises river sand, lake sand, mountain sand and desalted sea sand.Artificial sand is the Machine-made Sand through processing except soil, the general designation of mixed sand.
Natural coarse aggregate of the present invention is general conventional coarse aggregate; And regenerated coarse aggregate be by the discarded concrete in building waste through sorting, broken and screening, remove and be less than 9.50mm and be greater than after the particle of 20mm, the aggregate size scope of being processed into is in the particle diameter section of 10～20mm.
Flyash, is in the flue gas from coal combustion, to receive the thin ash of catching, and flyash is the main solid waste that coal-burning power plant discharges.Flyash can be used as concrete adulterant.
The present invention adopts simple grain level regeneration aggregate to prepare high performance flowing concrete not only to have simplified manufacturing procedure, and has reduced cost.Current about adopting research that simple grain level regeneration aggregate prepares high performance flowing concrete seldom.Therefore, preparation self-compacting regenerated aggregate concrete not only can effectively solve environment and the social concern that building waste causes, and also has certain economic benefit, and has implemented that country economizes on resources, the techno-economic policy of green production.
The object of the invention is to: provide the discarded concrete that a kind of employing contains a small amount of brickbat to replace as simple grain level coarse aggregate the method that part natural coarse aggregate is prepared the self-compacting concrete of regenerating, reduce building waste, economize on resources, reduce production costs.
The raw material composition of C40 level simple grain level regeneration self-compacting concrete of the present invention comprises: cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, between each material composition, press cement weight than being cement: regenerated coarse aggregate: natural coarse aggregate: fine aggregate: water: additional water: flyash: admixture=1: (0.63～1.38): (0.61～1.48): 1.71: 0.40: (0.03～0.07): 0.25: (0.007～0.010), wherein water-cement ratio is 0.32.Further, between described concrete each material composition, by cement weight ratio, be specially cement: regenerated coarse aggregate: natural coarse aggregate: fine aggregate: water: additional water: flyash: admixture=1: 0.63: 1.48: 1.71: 0.40: 0.03: 0.25: 0.010, wherein water-cement ratio is 0.32.Further, between described concrete each material composition, by cement weight ratio, be specially cement: regenerated coarse aggregate: natural coarse aggregate: fine aggregate: water: additional water: flyash: admixture=1: 1.02: 1.02: 1.71: 0.40: 0.05: 0.25: 0.008, wherein water-cement ratio is 0.32.Further, between described concrete each material composition, by cement weight ratio, be specially cement: regenerated coarse aggregate: natural coarse aggregate: fine aggregate: water: additional water: flyash: admixture=1: 1.38: 0.61: 1.71: 0.40: 0.07: 0.25: 0.007, wherein water-cement ratio is 0.32.
In described building demolition thing, discarded concrete is 30%～70% as regenerated coarse aggregate Substitute For Partial natural rubble as the substitution rate of coarse aggregate.Described regenerated coarse aggregate is that the particle diameter that the discarded concrete that contains a small amount of brickbat obtains through screening after jaw crushing crusher machine is again the simple grain grating of 10mm～20mm.
The invention still further relates to a kind of C40 level simple grain level regeneration self-compacting concrete preparation method, comprise the following steps:
(1) by the discarded concrete process sorting in building waste, broken and screening, screen out and be less than 9.50mm and be greater than after the particle of 20mm, with aggregate size, in 10mm～20mm particle diameter section, be processed into regenerated coarse aggregate;
(2) for preventing sticky pot, take each material appropriate, mixing concrete, treat that stirrer inwall is stained with sand-cement slurry, take out concrete, by proportioning, take cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, according to the order of regenerated coarse aggregate, natural coarse aggregate, fine aggregate, cement, flyash and admixture, feed intake and then start stirrer, dry mixing 1min～2min;
(3) add load weighted water and additional water, continue to stir 1min～2min.
The invention belongs to building material technical field, provide the discarded concrete that a kind of utilization contains a small amount of brickbat to replace as simple grain level regenerated coarse aggregate the method that part natural coarse aggregate is prepared C40 level self-compacting concrete.This regeneration self-compacting concrete is comprised of following component, raw material composition comprises: cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, between each material composition, press cement weight than being cement: regenerated coarse aggregate: natural coarse aggregate: fine aggregate: water: additional water: flyash: admixture=1: (0.63～1.38): (0.61～1.48): 1.71:0.40: (0.03～0.07): 0.25: (0.007～0.010), wherein water-cement ratio is 0.32.According to the C40 level self-compacting concrete of above method preparation, there is good mobility, gap trafficability characteristic, education resistance, meet requirement of strength.In the time of constructability, reduced concrete production cost, preparation method is simple, is applicable to suitability for industrialized production.
With respect to scheme of the prior art, advantage of the present invention is:
The C40 level simple grain level regeneration self-compacting concrete that the present invention produces, material used, except cement, stone, sand and four kinds of raw materials of water that normal concrete is used, also comprises the discarded concrete simple grain level regenerated coarse aggregate, flyash and the efficient polycarboxylate water-reducer that contain a small amount of brickbat.The mobility of prepared regeneration self-compacting concrete, fillibility, education resistance, through time loss and intensity all meet related request.In the time of constructability, reduced concrete production cost.Meanwhile, can also solve the problem that building waste is processed, alleviate the pressure of resource exhaustion, environmental protection, preparation method is simple, is applicable to suitability for industrialized production.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for the present invention is described.The implementation condition adopting in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
Embodiment:
(1) prepare raw material:
Cement: PO42.5 ordinary Portland cement, apparent density is 3.10g/cm
3.
Flyash: 1 grade of flyash, apparent density 2.04g/cm
3.
Sand: the medium sand that fineness modulus is 2.36, apparent density is 2.65g/cm
3, tap density is 1.45g/cm
3, water ratio is 0.4%.
Natural coarse aggregate: the rubble of 5～20mm continuous size fraction, apparent density is 2.75g/cm
3, tap density is 1.35g/cm
3, water-intake rate is 0.45%.
Regenerated coarse aggregate: the discarded concrete in building waste, through sorting, broken and screening, is screened out and is less than 9.50mm and is greater than after the particle of 20mm, be processed into regenerated coarse aggregate with aggregate size in 10mm～20mm particle diameter section, apparent density is 2.35g/cm
3, tap density is 1.23g/cm
3, water-intake rate is 4.76%.
Admixture: high-efficiency water-reducing agent of poly-carboxylic acid.
Water: tap water.
(2) for preventing sticky pot, take each material appropriate, mixing concrete, treat that stirrer inwall is stained with sand-cement slurry, take out fresh concrete, by proportioning, take cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, according to the order of regenerated coarse aggregate, natural coarse aggregate, fine aggregate, cement, flyash and admixture, feed intake and then start stirrer, dry mixing 1min～2min;
(3) add load weighted water and additional water, continue to stir 1min～2min.
C40 level simple grain level self-compacting regeneration concrete proportioning is as follows:
Test data:
Above-mentioned example is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations that spirit is done according to the present invention or modification, within all should being encompassed in protection scope of the present invention.
Claims (9)
1. C40 level simple grain level regeneration self-compacting concrete, the feed composition that it is characterized in that described self-compacting concrete is cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, and the water-cement ratio of self-compacting concrete is 0.32; Wherein mark calculating feed composition is by weight:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63 ~ 1.38 parts by weight;
Natural coarse aggregate 0.61 ~ 1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03 ~ 0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007 ~ 0.010 parts by weight.
2. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described self-compacting concrete by weight mark calculate feed composition and be:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63 ~ 1.02 parts by weight;
Natural coarse aggregate 1.02 ~ 1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03 ~ 0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007 ~ 0.010 parts by weight.
3. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described self-compacting concrete by weight mark calculate feed composition and be:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.02 ~ 1.38 parts by weight;
Natural coarse aggregate 0.61 ~ 1.02 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03 ~ 0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007 ~ 0.010 parts by weight.
4. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described self-compacting concrete by weight mark calculate feed composition and be:
Cement 1 parts by weight;
Regenerated coarse aggregate 0.63 parts by weight;
Natural coarse aggregate 1.48 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.03 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.010 parts by weight.
5. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described self-compacting concrete by weight mark calculate feed composition and be:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.02 parts by weight;
Natural coarse aggregate 1.02 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.05 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.008 parts by weight.
6. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described self-compacting concrete by weight mark calculate feed composition and be:
Cement 1 parts by weight;
Regenerated coarse aggregate 1.38 parts by weight;
Natural coarse aggregate 0.61 parts by weight;
Fine aggregate 1.71 parts by weight;
Water 0.40 parts by weight;
Additional water 0.07 parts by weight;
Flyash 0.25 parts by weight;
Admixture 0.007 parts by weight.
7. C40 level simple grain level according to claim 1 regeneration self-compacting concrete, it is characterized in that described regenerated coarse aggregate be by by the discarded concrete in building waste through sorting, broken and screening, removal is less than 9.50mm and is greater than after the particle of 20mm, is processed into aggregate size scope and is regenerated coarse aggregate in the particle diameter section of 10 ~ 20mm.
8. C40 level simple grain level regeneration self-compacting concrete according to claim 1, is characterized in that described fine aggregate is medium sand; Described cement is PO42.5 ordinary Portland cement; Described flyash is I level flyash.
9. a preparation method for the C40 level simple grain level described in claim 1～8 any one regeneration self-compacting concrete, is characterized in that said method comprising the steps of:
(1) preparation of regenerated coarse aggregate: the discarded concrete in building waste, through sorting, broken and screening, is removed and is less than 9.50mm and is greater than after the particle of 20mm, be processed into regenerated coarse aggregate with aggregate size in 10 ~ 20mm particle diameter section;
(2) by proportioning, take cement, regenerated coarse aggregate, natural coarse aggregate, fine aggregate, water, additional water, flyash and admixture, according to the order of regenerated coarse aggregate, natural coarse aggregate, fine aggregate, cement, flyash and admixture, feed intake and then start stirrer, dry mixing 1 ~ 2min;
(3) add load weighted water and additional water, continue to stir 1 ~ 2min and obtain described C40 level simple grain level regeneration self-compacting concrete.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103121819A (en) * | 2013-03-05 | 2013-05-29 | 北京新奥混凝土集团有限公司 | C30 self-compacting concrete prepared from recycled aggregate and preparation method thereof |
| CN103130473A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | C20 self-compaction concrete prepared from recycled aggregate and preparation method thereof |
| CN103130464A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof |
| JP2013159502A (en) * | 2012-02-02 | 2013-08-19 | Kajima Corp | Hydraulic composition |
-
2014
- 2014-04-18 CN CN201410158303.6A patent/CN103936368B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013159502A (en) * | 2012-02-02 | 2013-08-19 | Kajima Corp | Hydraulic composition |
| CN103121819A (en) * | 2013-03-05 | 2013-05-29 | 北京新奥混凝土集团有限公司 | C30 self-compacting concrete prepared from recycled aggregate and preparation method thereof |
| CN103130473A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | C20 self-compaction concrete prepared from recycled aggregate and preparation method thereof |
| CN103130464A (en) * | 2013-03-05 | 2013-06-05 | 北京新奥混凝土集团有限公司 | C25 self-compaction concrete prepared from recycled aggregate and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 周敏: "再生混凝土骨料粒径和级配对无砂大孔混凝土性能的影响", 《混凝土》 * |
| 钱双彬，宋春霞: "混凝土骨料非连续级配的试验研究", 《华北科技学院学报》 * |
| 陈智: "用非连续级配粗集料配制混凝土的应用", 《铁道标准设计 》 * |
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| CN107298591A (en) * | 2017-07-24 | 2017-10-27 | 张家港江苏科技大学产业技术研究院 | C40 grades of slag sand self-compacting concretes and preparation method thereof, prefabricated components |
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| CN110066158A (en) * | 2019-06-11 | 2019-07-30 | 张家港江苏科技大学产业技术研究院 | Lightweight self-compacting concrete and preparation method thereof |
| CN110357535A (en) * | 2019-07-31 | 2019-10-22 | 江苏德丰建设集团有限公司 | Subzero temperature self-compacting concrete and preparation method thereof |
| CN111410487A (en) * | 2020-04-23 | 2020-07-14 | 张家港江苏科技大学产业技术研究院 | Single-grain-grade nickel slag stone self-compacting concrete |
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