CN105587125A - Method for pouring concrete based on magnetic drive - Google Patents

Method for pouring concrete based on magnetic drive Download PDF

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Publication number
CN105587125A
CN105587125A CN201510375483.8A CN201510375483A CN105587125A CN 105587125 A CN105587125 A CN 105587125A CN 201510375483 A CN201510375483 A CN 201510375483A CN 105587125 A CN105587125 A CN 105587125A
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CN
China
Prior art keywords
concrete
magnetic
magnetic field
method
based
Prior art date
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CN201510375483.8A
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Chinese (zh)
Inventor
陈驹
王君
金伟良
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浙江大学
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Application filed by 浙江大学 filed Critical 浙江大学
Priority to CN201510375483.8A priority Critical patent/CN105587125A/en
Publication of CN105587125A publication Critical patent/CN105587125A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/90Reuse, recycling or recovery technologies cross-cutting to different types of waste
    • Y02W30/91Use of waste materials as fillers for mortars or concrete
    • Y02W30/94Use of waste materials as fillers for mortars or concrete from metallurgical processes

Abstract

The invention provides a method for pouring concrete based on magnetic drive. The method is based on the principle that a magnetic substance is attracted by electromagnetic force at an electromagnetic field, concrete containing ferromagnetic aggregates is blended in a proper proportion, and the concrete is driven by a magnetic field erected outside to flow evenly in a member, so that dense pouring is achieved. By means of the pouring method, gravity constraint can be avoided, and omnibearing concrete pouring is achieved. The pouring quality is greatly improved, university is high, and the pouring method can be widely applied to various pouring construction schemes.

Description

A kind of method that drives casting concrete based on magnetic

Technical field

The present invention relates to the realm of building construction, be specifically related to a kind of method that drives casting concrete based on magnetic.

Background technology

In modern construction engineering construction, concreting technology is the important content of construction technology management, isAffect fabric structure stability, affect the key of building concrete construction quality, strengthen concrete castingThe raising of building technology is extremely important. In concreting technology, common concreting mode has two kinds:A kind of artificial nature's casting method, builds downwards based on gravity principle, as the component forms such as beam, post, wall are all adoptedWith this class pouring type, because the direction of gravity is vertically downward, the size of acceleration of gravity is also constantConstant, therefore concretely build direction, the scope of building is also limited, and to institute's casting concreteMobility require also high. Another kind of jack-block, based on pump pressure poor come jacking build, in steel pipe column bottomPerforate, is attached thereto the outlet of concrete pump with carrier pipe, and concrete is affected via conveying by pump pressurePipe injects in steel column, until fill concrete in post continuously; For example, during application number is 200510000598.5State's patent of invention discloses a kind of lightweight concrete pumping method and equipment, although this mode of building has been utilizedThe pump pressure of concrete pump drives concrete, but still is to realize the close of concrete self by Action of Gravity FieldReal, therefore also require concrete to there is higher mobility.

To sum up, the existing mode of building all drives concrete based on GRAVITY CONTROL, thus build applicable rightResemble limitation, only limited to the member of erectting. If for the member (as the steel tube component of level) of horizontal positioned,There is following technological deficiency in the existing mode of building: 1. the steel pipe of level is due to both ends open, middle airtight,While building, concrete flowing is not affected by gravity, therefore inapplicable artificial nature's casting method; 2. jack-block onlyCan drive in concrete import department, be difficult to drive concrete lateral flow in steel pipe, and concrete existSkewness in steel pipe, cannot closely knitly build, therefore also inapplicable jack-block.

So, how to adopt a kind of convenient, effectively build mode, to the horizontal casting concrete of member, beThose skilled in the art are badly in need of the technical barrier solving.

Summary of the invention

The invention provides a kind of method that drives casting concrete based on magnetic, by add iron in concreteMagnetic aggregate, drives concrete lateral flow, closely knit building based on magnetic field principle, has solved prior art and has depositedAbove-mentioned defect.

The technical solution adopted in the present invention is specific as follows:

A method that drives casting concrete based on magnetic, comprises the steps:

(1) ferromagnetism aggregate is added to concrete in proportion, through mixer uniform stirring 2min;

(2) set up magnetic field in the periphery of member to be built, one end of member to be built is connected with magnetic-inductive device,Open magnetic field power supply, the magnetic line of force in magnetic field is concentrated in member to be built;

(3) add the concrete of step (1) gained from the other end of member to be built, controlling magnetic field electric currentWith magnetic induction intensity, make concrete Uniform Flow in member;

(4) when concrete is evenly covered with whole building behind space, close magnetic field power supply, check build closely knitDegree.

Preferably, in step (1), ferromagnetism aggregate accounts for concrete proportion and is at least 50%.

Preferred, in ferromagnetism aggregate, the proportion that ferromagnetic material accounts for aggregate is 25~100%.

Preferably, in step (1), ferromagnetism aggregate is uniformly distributed in concrete, with concrete otherComposition forms bonds well.

Preferably, ferromagnetism aggregate is one or more in slag, iron powder, magnetic iron ore, waste slag etc.

Preferably, in step (1), the concrete slump is at least 10mm.

Preferably, in step (2), magnetic field is formed by coil, coil rack, shell and steel end plate, whereinCoil winding is in coil rack, and coil rack is coated in shell, and shell is fixed on and is waited to build by steel end plateThe periphery of member.

Preferably, in step (2), the magnetic field force that ferromagnetism aggregate produces in magnetic field satisfy condition for:Cohesive strength < magnetic field force between concrete particle < concrete disintegration critical force.

Preferably, in step (2), the magnetic field of setting up is single magnetic field, or is the stack in multiple magnetic fields.

In the present invention, concrete thick, fine aggregate employing ferromagnetic material, for example slag or iron powder. FerromagneticProperty aggregate and cement, water and common sandstone uniform stirring in proportion, form concrete, there is stream at concreteWhen moving property, utilize magnetic force generator to produce magnetic field, thereby control the fortune of ferromagnetism aggregate in magnetic fieldMoving center, and utilize the cohesive force between ferromagnetism aggregate and other compositions of concrete, concrete is moved to instituteThe position that need to build. Because magnetic direction can artificially design, externally-applied magnetic field is (containing single magnetic field or multipleThe stack in magnetic field) also can move, break away from gravity constraint thereby can realize, carry out omnibearing concreteBuild. Magnetic field by the stepless action of each ferromagnetism aggregate on concrete, and the magnetic field force size applyingCan control, can exceed Action of Gravity Field, thereby can reduce the requirement for concrete flowability.

To sum up, casting method provided by the invention, novelty is:

1, be different from prior art based on GRAVITY CONTROL principle, this method is subject at electromagnetic field based on magnetisable materialTo the principle of electromagnetic force, drive concrete to realize by magnetic and build object;

2, adopt best proportioning containing ferromagnetism aggregate concrete, make in ferromagnetism aggregate and concrete otherComposition is well-bonded, and the concrete slump of step (1) gained is at most 10mm, and performance is better than existingConcrete (slump of normal concrete is 30~50mm), therefore concrete of the present invention can be done in magnetic fieldUse lower Uniform Flow, closely knit building, has improved pouring quality greatly;

3, this method, without by equipment insert member, fills by the magnetic field and the magnetic induction that are set up in member outsidePut, directly act on the concrete in member, easy to use, time saving and energy saving;

4, this method highly versatile, is not only applicable to build the member of horizontal positioned, and is applicable to build perpendicularThe member of straight placement or other arbitrarily angled placements; Can overcome the shadow that is subject to concrete gravity effect while buildingRing, and the prior art technological deficiency that concrete flowability is poor while building, packing is low, can extensively answerFor various pouring construction schemes.

Brief description of the drawings

Fig. 1 is the structural representation that the present invention's magnetic in simulated experiment drives casting concrete device.

Fig. 2 is that the present invention builds design sketch in simulated experiment.

Detailed description of the invention

Embodiments of the invention, are the simulated experiment of practical engineering application, and concrete experimental provision is as Fig. 1 instituteShow, wherein: sequence number 1 represents coil, sequence number 2 represents coil steel tube shell, and sequence number 3 represents steel end plate,Sequence number 4 represents coil rack (nonmetal), and sequence number 5 represents steel core bar, and sequence number 6 represents brass bolt, sequence number7 represent lucite tube (horizontal positioned), and sequence number 8 represents containing ferromagnetism aggregate concrete.

Above-mentioned parts, sequence number 7 is simulated member to be built; Sequence number 1~4 simulation is set up in the magnetic of member periphery, and coil 1 is wound in coil rack 4, and coil rack 4 is coated in shell 2, and shell 2 is by steel endPlate 3 is fixed on the periphery of member 7 to be built; Sequence number 5~6 simulation magnetic-inductive devices, steel core bar 5 is installed onOne end of lucite tube 7, and be threaded with lucite tube 7 by brass bolt 6; Concrete eight existsIn lucite tube 7, build.

To introduce in detail the construction procedure toward lucite tube 7 interior casting concretes in simulated experiment below:

(1) ready-mixed concrete

Adopt ferromagnetism aggregate (as slag) as coarse aggregate, evenly mix and put concrete, in concrete, respectively becomeThe proportioning of dividing is: cement: slag: sand: water=1:3.0:1.6:0.45, the concrete slump is 10mm.

(2) assembling magnetic force is built device

By in the horizontal insertion apparatus of lucite tube 7 (diameter is 80mm), by the steel connecting with brass bolt 6Plug 5 (being magnetic-inductive device) is placed on the right-hand member of machine glass tube 7, reduces air gap; Simultaneously at machine glass tube 7Periphery set up magnetic field, open magnetic field power supply, the magnetic line of force is concentrated in lucite tube 7, can subtractFew device leakage field phenomenon, increases electromagnetic attraction. By controller control inputs electric current and the corresponding magnetic strength of adjustmentAnswer intensity, build requirement to meet.

(3) casting concrete

Add the concrete step (1) stirs, controlling magnetic field electric current and magnetic from the left end of lucite tube 7Induction, makes concrete level Uniform Flow to the right under the effect of magnetic field force, in member, realizesBuild object.

(4) check concreting packing

When concrete is evenly covered with whole building behind space, close magnetic field power supply, take out lucite tube 7, inspectionLook into the packing of building. Observe and find, the concrete density that build lucite tube 7 inside is good, watersBuild effect and see Fig. 2. Therefore, the feasibility of casting method provided by the invention has been verified in this simulated experiment.

It is emphasized that in above-mentioned construction procedure, concrete each component ratio is only reference example, can rootAdjust according to actual conditions arbitrary proportion, as long as account for the more than 50% of concrete proportion total meet ferromagnetism aggregate,. In addition, in ferromagnetism aggregate, can be all magnet material (being that proportion accounts for 100%), also canPart is non-magnet material, and part is magnet material; But, through inventor's experimental verification, findUnder magnetic fields, ferromagnetism aggregate not only will overcome self gravitation, also will drive other the non-iron in concreteThe concrete mortar of magnetic moves together, thus want to overcome the mean gravity of aggregate and concrete mortar,And the average magnetic driving force that is assigned to each ferromagnetism aggregate can not be greater than between aggregate and concrete mortarCohesive strength, not so can produce aggregate segregation; Through inventor's experimental demonstration repeatedly, the known magnet material of working as accounts forThe proportion of ferromagnetism aggregate is more than 25%, grating is when good, builds effect remarkable.

Claims (9)

1. a method that drives casting concrete based on magnetic, comprises the steps:
(1) ferromagnetism aggregate is added to concrete in proportion, through mixer uniform stirring 2min;
(2) set up magnetic field in the periphery of member to be built, one end of member to be built is connected with magnetic-inductive device,Open magnetic field power supply, the magnetic line of force in magnetic field is concentrated in member to be built;
(3) add the concrete of step (1) gained from the other end of member to be built, controlling magnetic field electric current withMagnetic induction intensity, makes concrete Uniform Flow in member;
(4) when concrete is evenly covered with whole building behind space, close magnetic field power supply, check build closely knitDegree.
2. the method that drives casting concrete based on magnetic according to claim 1, is characterized in that instituteIn the step (1) of stating, ferromagnetism aggregate accounts for concrete proportion and is at least 50%.
3. the method that drives casting concrete based on magnetic according to claim 2, is characterized in that instituteIn the ferromagnetism aggregate of stating, the proportion that ferromagnetic material accounts for ferromagnetism aggregate is 25%~100%.
4. the method that drives casting concrete based on magnetic according to claim 1, is characterized in that instituteIn the step (1) of stating, ferromagnetism aggregate is uniformly distributed in concrete, forms with concrete other compositionsBonds well.
5. according to the method based on magnetic driving casting concrete described in any one in claim 1~4, its spyLevy and be, described ferromagnetism aggregate is one or more in slag, iron powder, magnetic iron ore, waste slag etc.
6. the method that drives casting concrete based on magnetic according to claim 1, is characterized in that instituteIn the step (1) of stating, the concrete slump is at least 10mm.
7. the method that drives casting concrete based on magnetic according to claim 1, is characterized in that instituteIn the step (2) of stating, described magnetic field is formed by coil, coil rack, shell and steel end plate, its center lineCircle is wound in coil rack, and coil rack is coated in shell, and shell is fixed on structure to be built by steel end plateThe periphery of part.
8. according to the method based on magnetic driving casting concrete described in claim 1 or 7, it is characterized in that,In described step (2), the satisfying condition as concrete of the magnetic field force that ferromagnetism aggregate produces in magnetic fieldCohesive strength < magnetic field force between particle < concrete disintegration critical force.
9. according to the method based on magnetic driving casting concrete described in claim 1 or 7, it is characterized in that,In described step (2), the magnetic field of setting up is single magnetic field, or is the stack in multiple magnetic fields.
CN201510375483.8A 2015-06-29 2015-06-29 Method for pouring concrete based on magnetic drive CN105587125A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106083188A (en) * 2016-06-16 2016-11-09 浙江大学 A kind of steel fiber reinforced concrete be magnetically oriented method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306472A (en) * 1998-06-24 2001-08-01 比约恩·斯韦德伯格 Method and device for magnetic alignment of fibres
JP2003138752A (en) * 2001-11-02 2003-05-14 Tetsuji Tatsuoka Magnetic cement filling construction method
CN101865856A (en) * 2010-06-08 2010-10-20 中冶建筑研究总院有限公司 Method for analyzing and testing content of free magnesium oxide in steel slag
CN101913190A (en) * 2010-07-23 2010-12-15 河北工业大学 Method and special equipment for preparing unidirectionally-distributed steel fiber reinforced cement paste
CN104557112A (en) * 2014-12-29 2015-04-29 安徽中龙建材科技有限公司 Asbestos-glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306472A (en) * 1998-06-24 2001-08-01 比约恩·斯韦德伯格 Method and device for magnetic alignment of fibres
JP2003138752A (en) * 2001-11-02 2003-05-14 Tetsuji Tatsuoka Magnetic cement filling construction method
CN101865856A (en) * 2010-06-08 2010-10-20 中冶建筑研究总院有限公司 Method for analyzing and testing content of free magnesium oxide in steel slag
CN101913190A (en) * 2010-07-23 2010-12-15 河北工业大学 Method and special equipment for preparing unidirectionally-distributed steel fiber reinforced cement paste
CN104557112A (en) * 2014-12-29 2015-04-29 安徽中龙建材科技有限公司 Asbestos-glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106083188A (en) * 2016-06-16 2016-11-09 浙江大学 A kind of steel fiber reinforced concrete be magnetically oriented method
CN106083188B (en) * 2016-06-16 2019-01-01 浙江大学 A kind of steel fiber reinforced concrete is magnetically oriented method

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Application publication date: 20160518

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