CN104863369B - Magnetic force vibrating method containing ferromagnetism aggregate concrete and device - Google Patents
Magnetic force vibrating method containing ferromagnetism aggregate concrete and device Download PDFInfo
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- CN104863369B CN104863369B CN201510260336.6A CN201510260336A CN104863369B CN 104863369 B CN104863369 B CN 104863369B CN 201510260336 A CN201510260336 A CN 201510260336A CN 104863369 B CN104863369 B CN 104863369B
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Abstract
It is an object of the invention to provide a kind of magnetic force vibrating method containing ferromagnetism aggregate concrete and device.Utilize and in concrete, add ferromagnetic material or use ferromagnetism aggregate concrete, by adding magnetic field in outside, control internal ferromagnetic material to move under the action of a magnetic field, by changing magnetic direction and size, control motion frequency and the direction of inside concrete ferromagnetic material, it is achieved the effect of vibrating to concrete.This vibrating method vibrates evenly than vibrator, and can be not directly contacted with concrete or outer template, will not destroy concrete surface, does not the most need to insert the space requirement of vibrator.
Description
Technical field
The present invention relates to a kind of magnetic force vibrating method containing ferromagnetism aggregate concrete and device.
Background technology
The purpose of concrete vibrating mainly makes concrete compaction uniform, get rid of substantial amounts of air in concrete, concrete and rebar is made to be closely joined together, Concrete Structure intensity and durability, reduce concrete and the quality problems of the concrete such as honeycomb, pitted skin, hole occur.
Concrete vibrating is carried out by vibrator at present, and concrete vibrator is pressed concrete and propagated the operating type difference of vibration, can be divided into four classes such as plug-in type internal vibrator, adhesion type external vibrators, flat external vibrator and vibration platen.Generally speaking the principle of these vibrators is all to concrete by vibration source transmission machinery power of vibrating, thus realizes vibrating of concrete.Plug-in type internal vibrator uses the mode vertically or sideling inserted to vibrate, and there is considerable influence position when defect is to extract to the quality of concrete, and when pervibration, the most different from the distance difference Oscillation Amplitude of vibrating head, it is impossible to ensure its uniformity；Concrete is vibrated by adhesion type external vibrators and flat external vibrator and vibration platen etc. in outside, and internal soundness also cannot ensure.And vibrator is when vibrating, easily touches template, reinforcing bar and built-in fitting etc., it can be made to deform or depart from original position；Make electricity consumption vibrator, also have danger of hazardous electrical discharges.And these vibrating methods have also can destroy concrete surface, analyze and can be seen that conventional concrete vibrating method tool has disadvantages that.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the present invention to provide a kind of magnetic force vibrating method containing ferromagnetism aggregate concrete and device.
A kind of magnetic force vibrating method containing ferromagnetism aggregate concrete, adds ferromagnetism aggregate in concrete, then applies externally-applied magnetic field through concrete, control ferromagnetism aggregate motion, vibrated concrete.
Described ferromagnetism aggregate accounts for more than the 25% of aggregate weight.
Described ferromagnetism aggregate, by magnetic field control, orients or is uniformly distributed in concrete.
Described externally-applied magnetic field, can change one or more in the size in magnetic field, direction, frequency when vibrating, meet < magnetic field force < the concrete disintegration critical force of cohesive strength between concrete particle.
Described externally-applied magnetic field, applies magnetic field, then alternating action from a direction or multiple directions simultaneously.
A kind of magnetic force tamping equipment of the concrete using described method.
Beneficial effects of the present invention: magnetic line of force distribution can control, magnetic field intensity, direction etc. can artificially adjust, the magnetic line of force can be through template or the external member etc. of parcel concrete, this vibrating method vibrates evenly than vibrator, and concrete or outer template can be not directly contacted with, concrete surface will not be destroyed, the most do not need to insert the space requirement of vibrator.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention is vibrated the experimental provision structural representation containing ferromagnetism aggregate concrete in cube mold；In figure, coil 1, coil steel tube shell 2, steel end plate 3, non-metal wire ring framework 4, steel core bar 5, the concrete 6 containing ferromagnetism aggregate, cube mold 7, magnetic means A and B all size parameter is identical.
Fig. 2 is the internal particle scattergram of the steel slag concrete of the embodiment of the present invention.
Detailed description of the invention
Utilize in concrete, add ferromagnetic material, or use ferromagnetism aggregate concrete, such as slag or iron powder etc..By adding magnetic field in outside, control internal ferromagnetic material and move under the action of a magnetic field, by changing magnetic direction and size, control motion frequency and the direction of inside concrete ferromagnetic material, it is achieved for the concrete effect of vibrating.Through experimental study, aggregate need to account for more than the 50% of weight concrete, and wherein in aggregate, Magnet material need to account for more than the 25% of aggregate weight, it is desirable to grating is good.
Method on the present invention carries out the concrete vibrating device used of experiment in mould (plastics etc. can be used not affect the material of Distribution of Magnetic Field) and does detailed introduction below in conjunction with the accompanying drawings.
Embodiment
As it is shown in figure 1, at non-metal wire ring framework 4 wound thereon coil 1 (2800 circle), outside coil steel tube shell 2 and steel end plate 3 seal；In order to make the magnetic line of force pass cube mold 7, i.e. also cross the concrete 6 containing ferromagnetism aggregate, magnetic means A with B contacts one end of mould and is all not added with steel end plate 3, and inserting steel core bar 5 in magnetic means is to increase magnetic field intensity.
The present invention is described in detail below vibrate in cube mold containing ferromagnetism aggregate concrete simulation experiment
Step:
1, ready-mixed concrete.Using ferromagnetism aggregate slag and mix the concrete put as coarse aggregate, concrete mix is cement: slag: sand: water=1:3.0:1.6:0.42, concrete slump 10mm.
2, assemble magnetic force and pour device.By 150mm x 150mm x 150mm(can amplify as required) cube mold 7 is placed in the middle of magnetic means A and B, inserts in magnetic means by steel core bar 5, reduces air gap, increases magnetic induction, it is possible to reduce device leakage field phenomenon, increases electromagnetic attraction.Magnetic means connects controller, controls input current size and direction by controller.The magnetic field magnetic induction size and Orientation that control break magnetic means A and B produces.
3, vibrated concrete.Directly the concrete being stirred is poured in cube mold, control input current size and direction by controller, constantly change the magnetic field magnetic induction size and Orientation that magnetic means A and B produces.Can find to move back and forth about the concrete level under the action of a magnetic force containing ferromagnetism aggregate slag, reach the purpose vibrated.
4, concreting degree of compaction is checked.After end of vibrating, close power supply, concrete in cube mold is carried out maintenance in 28 days, after maintenance terminates, cut concrete and check its degree of compaction, can be seen that have good uniformity (being illustrated in fig. 2 shown below) of the steel slag concrete using magnetic force to vibrate containing ferromagnetism aggregate, it is worth mentioning at this point that, in Fig. 2, part hollow is to cause owing to coarse aggregates indivedual during concrete splitting drop.
Claims (5)
1. the magnetic force vibrating method containing ferromagnetism aggregate concrete, it is characterised in that add ferromagnetism aggregate in concrete, then applies externally-applied magnetic field through concrete, control ferromagnetism aggregate motion, vibrated concrete；Described externally-applied magnetic field, can change one or more in the size in magnetic field, direction, frequency when vibrating, meet < magnetic field force < the concrete disintegration critical force of cohesive strength between concrete particle.
Method the most according to claim 1, it is characterised in that described ferromagnetism aggregate accounts for more than the 25% of aggregate weight.
Method the most according to claim 1, it is characterised in that described ferromagnetism aggregate, by magnetic field control, orients or is uniformly distributed in concrete.
Method the most according to claim 1, it is characterised in that described externally-applied magnetic field, applies magnetic field, then alternating action from a direction or multiple directions simultaneously.
5. the magnetic force tamping equipment of the concrete using method according to claim 1.
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| CN201510260336.6A CN104863369B (en) | 2015-05-21 | 2015-05-21 | Magnetic force vibrating method containing ferromagnetism aggregate concrete and device |
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| CN201510260336.6A CN104863369B (en) | 2015-05-21 | 2015-05-21 | Magnetic force vibrating method containing ferromagnetism aggregate concrete and device |
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| CN104863369A CN104863369A (en) | 2015-08-26 |
| CN104863369B true CN104863369B (en) | 2017-01-04 |
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Families Citing this family (7)
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| CN109537904A (en) * | 2018-12-07 | 2019-03-29 | 彭从文 | Performance of concrete column confined pours auxiliary device and its application method |
| CN109369113B (en) * | 2018-12-14 | 2021-03-26 | 沈阳建筑大学 | Collapsible loess reinforcing grouting slurry, preparation method and application thereof |
| CN113027161A (en) * | 2021-03-05 | 2021-06-25 | 三峡大学 | Building crack repairing device and using method |
| CN112878213B (en) * | 2021-03-30 | 2023-05-05 | 洛阳理工学院 | Self-caulking concrete bridge deck maintenance process |
| CN113107587B (en) * | 2021-04-19 | 2022-06-07 | 太原理工大学 | Coal mine cemented filling device and method for directionally arranging coal gangue aggregates |
| CN114319871B (en) * | 2021-12-09 | 2022-11-04 | 浙江大学 | Surface treatment method for concrete containing ferromagnetic aggregate |
| CN114837422B (en) * | 2022-05-18 | 2024-03-12 | 三峡大学 | Construction device and method for reinforced magnetic protection layer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1168824A1 (en) * | 1984-03-27 | 1985-07-23 | Научно-Исследовательская Лаборатория Физико-Химической Механики Материалов И Технологических Процессов Главмоспромстройматериалов | Device for determining viscosity |
| SU1315586A1 (en) * | 1985-09-23 | 1987-06-07 | Ташкентский Политехнический Институт Им.А.Р.Бируни | Method of reinforcing concrete articles |
| SU1488191A1 (en) * | 1987-09-10 | 1989-06-23 | Краснодарский политехнический институт | Method of producing reinforced concrete articles |
| JP2903078B2 (en) * | 1993-02-18 | 1999-06-07 | 鹿島建設株式会社 | Precast concrete member and method of manufacturing the same |
| US5527175A (en) * | 1993-04-30 | 1996-06-18 | Face, Jr.; Samuel A. | Apparatus of staged resonant frequency vibration of concrete |
| CN1258919A (en) * | 1998-12-28 | 2000-07-05 | 北京市石景山区京磁技术公司 | Forming method of sintered anisotropic magnet |
| CN201835533U (en) * | 2010-11-09 | 2011-05-18 | 安阳市安高振动器厂 | Concrete vibrator |
| CN103711311A (en) * | 2012-09-29 | 2014-04-09 | 江苏博固机电有限公司 | Electric concrete processing device |
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