CN209682546U - A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP - Google Patents
A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP Download PDFInfo
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- CN209682546U CN209682546U CN201822199536.7U CN201822199536U CN209682546U CN 209682546 U CN209682546 U CN 209682546U CN 201822199536 U CN201822199536 U CN 201822199536U CN 209682546 U CN209682546 U CN 209682546U
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- solenoid
- switch
- magnetic field
- power supply
- intelligent
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- 239000000835 fiber Substances 0.000 title claims abstract description 66
- 239000011210 fiber-reinforced concrete Substances 0.000 title claims abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims description 10
- 230000005291 magnetic effect Effects 0.000 claims abstract description 45
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 46
- 239000010959 steel Substances 0.000 abstract description 46
- 230000000694 effects Effects 0.000 abstract description 27
- 230000033001 locomotion Effects 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 4
- 230000005415 magnetization Effects 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 230000005484 gravity Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of intelligent positioning fiber systems that steel fiber reinforced concrete is reinforced suitable for FRP; it is characterized by comprising fixed cell, magnetic field units, intelligent control unit and moving cells; the fixed cell is made of insulating support; the magnetic field units are made of DC power supply, current control knob, protective resistance, the first solenoid, the second solenoid, third solenoid, the 4th solenoid, the 5th solenoid, the 6th helix tube, iron core, resin and switch, moving cell lifting device, loading device and intelligent switch.The utility model compensates for gravitational effect to deposition effect caused by steel fibre by magnetic field part, and the principle according to magnetization phenomenon and hysteresis effect improves the arrangement of elongated steel fibre, pass through motion parts and intelligent control part, whole side wall is uniformly reinforced, the adverse effect for alleviating the wall effect of steel fibre is effectively improved the arrangement situation of steel fibre.
Description
Technical field
The utility model belongs to technical field of concrete preparation, and in particular to one kind is suitable for FRP and reinforces steel fibre coagulation
The intelligent positioning fiber system of soil.
Background technique
In steel fiber reinforced concrete preparation process, the angular distribution of internal steel fibre has very strong randomness.It is fine
The coefficient of efficiency of dimension is usually lower, and distribution arrangement is that its coefficient of efficiency of two-dimensional fiber is often below 0.4；And distribution arrangement is three
The coefficient of efficiency of the fiber of dimension is more likely to can be lower than 0.25.Therefore, only fraction fiber can effectively accept tensile stress and
Bending stress.Under the collective effect of Vibration Technology and gravitational effect, steel fibre will be constantly mobile to concrete lower part, and tend to
The plane vertical with gravity is in the same direction, this phenomenon is known as the gravitational effect of fiber, and gravitational effect causes fiber in concrete
It is close under being dredged in distribution, cause actual strength to be declined compared with theoretical value.Therefore a kind of device is needed to improve the direction of its fiber
Distribution and the adverse effect for solving gravitational effect.Steel fibre belongs to ferromagnetic material its magnetic permeability μ > > 1, has very strong magnetization strong
Thus degree is expected with electromagnetic field come the precisely arrangement of effective control fiber and spatial position.In the prior art, invalid arrangement
Steel fibre result in the waste of steel and concrete strength promoted unobvious, or even concrete base voids and pits can be aggravated
Unfavorable phenomenon and the occurrence of lead to concrete side wall multiple crack growth.To in the prior art, steel fibre arrangement is changed
It is kind to have the methods of centrifugal process and electromagnetic oriented method, but condition is required excessively harsh, it is difficult to it is extensive to use；For gravitational effect
The method improved with wall effect does not have even.
Utility model content
Technical problem to be solved in the utility model is to provide one kind in view of the above shortcomings of the prior art to be suitable for FRP
The intelligent positioning fiber system for reinforcing steel fiber reinforced concrete, compensates for gravitational effect to caused by steel fibre by magnetic field part
Deposition effect, and the principle according to magnetization phenomenon and hysteresis effect improves the arrangement of elongated steel fibre, by motion parts and
Intelligent control part uniformly reinforces whole side wall, alleviates the adverse effect of the wall effect of steel fibre.
To realize the above-mentioned technical purpose, the technical solution that the utility model is taken are as follows:
A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP, it is characterised in that: including fixed single
Member, magnetic field units, intelligent control unit and moving cell, the fixed cell are made of insulating support, the insulation branch
Frame is fixedly mounted on insulating base by four insulating bars and is composed, and the magnetic field units are mounted on fixed cell, institute
The magnetic field units stated are by DC power supply, current control knob, protective resistance, the first solenoid, the second solenoid, third helical
Pipe, the 4th solenoid, the 5th solenoid, the 6th helix tube, iron core, resin and switch, second solenoid, third helical
Pipe, the 4th solenoid, the 5th solenoid and the 6th helix tube are successively stacked together from top to bottom, the first solenoid peace
On moving cell, the iron core is mounted in the first solenoid and is filled between iron core and the first solenoid resin,
It is made up of back between the DC power supply, current control knob, protective resistance, switch and the first solenoid conducting wire connection
Road, second solenoid are made up of back with DC power supply, current control knob, protective resistance and switch respectively conducting wire
Road, the third solenoid are made up of back with DC power supply, current control knob, protective resistance and switch respectively conducting wire
Road, the 4th solenoid are made up of back with DC power supply, current control knob, protective resistance and switch respectively conducting wire
Road, the 5th solenoid are made up of back with DC power supply, current control knob, protective resistance and switch respectively conducting wire
Road, the 6th helix tube are made up of back with DC power supply, current control knob, protective resistance and switch respectively conducting wire
Road, the moving cell are made of lifting device, loading device and intelligent switch, and the lifting device is mounted on fixed single
In member, the loading device is mounted on lifting device, and the intelligent switch is mounted on the left side of fixed cell, described
Intelligent control unit is made of processor and sensor, and the intelligent switch in the processor, sensor and moving cell is logical
Cross conducting wire composition circuit.
The electric current of DC power supply in above-mentioned magnetic field units is 0~20A and the voltage of DC power supply is 0~30V.
The first helical pipe size in above-mentioned magnetic field units is less than cross section size and the first solenoidal specification
For 300~7000 circles.
The second solenoid, third solenoid, the 4th solenoid, the 5th solenoid and the 6th spiral shell in above-mentioned magnetic field units
Coil size is greater than cross section size and their specification is 300~7000 circles.
The first solenoid, the second solenoid, third solenoid, the 4th solenoid, the 5th spiral shell in above-mentioned magnetic field units
Spool and the 6th helix tube are all placed using vertical.
Insulating support in the utility model is connected by insulation system, and whole device is made to keep stablizing when placing test specimen,
And interference is not generated to the magnetic field part；The control of current control knob is the first solenoid, the second solenoid, third helical
Pipe, the 4th solenoid, the 5th solenoid and the 6th helix tube provide the voltage and size of current of direct current, by the intelligent control
The control of unit；Iron core is located in the first solenoid, and intermediate gaps are filled by resin, and three is made to be linked to be an entirety, guarantees steady
Solidity, control of the switch by intelligent control unit；First solenoid, the second solenoid, third solenoid, the 4th solenoid,
Five solenoids and the 6th helix tube are placed vertically, and the magnetic field force generated is to the steel fibre in the perspective plane direction of helical tube section
Action direction it is opposite with gravity direction；In the magnetic field force of the steel fibre on the perspective plane of non-threaded tube section, have one to axle center
Horizontal component and one with the vertical component of gravity reversal, this moves the steel fibre being magnetized mainly to gravity opposite direction,
The steel fibre of side wall is drawn close to axle center；Moving cell can be such that the first solenoid moves up and down；Sensor is detectable do not solidify it is mixed
Steel fibre position in solidifying soil, and signal is fed back to place's reason device, processor is according to the result fed back to the current control
Knob and moving cell carry out real time monitoring adjusting.
The utility model has the advantage of the followings: compensating for gravitational effect to caused by steel fibre by magnetic field part
Deposition effect, and the principle according to magnetization phenomenon and hysteresis effect improves the arrangement of elongated steel fibre, by motion parts and
Intelligent control part uniformly reinforces whole side wall, alleviates the adverse effect of the wall effect of steel fibre；Effectively change
The arrangement situation of kind steel fibre, enhances the coefficient of efficiency of steel fibre, improves the intensity of steel fiber reinforced concrete.
Detailed description of the invention
Fig. 1 is the structure shaft side figure of the utility model；
Fig. 2 is the structural front view of the utility model；
Fig. 3 is the structure shaft side figure of the utility model magnetic field units；
Fig. 4 is the structural front view of the utility model magnetic field units；
Fig. 5 is the structure top view of the utility model magnetic field units.
Appended drawing reference therein are as follows: fixed cell 1, insulating support 11, magnetic field units 2, DC power supply 201, current control
Knob 202, protective resistance 203, the first solenoid 204, the second solenoid 205, third solenoid 206, the 4th solenoid 207,
5th solenoid 208, iron core 210, resin 211, switch 212, intelligent control unit 3, processor 31, passes the 6th helix tube 209
Sensor 32, moving cell 4, lifting device 41, loading device 42, intelligent switch 43.
Specific embodiment
Specific embodiment of the present utility model is further illustrated with reference to the accompanying drawing:
A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP, it is characterised in that: including fixed single
Member 1, magnetic field units 2, intelligent control unit 3 and moving cell 4, the fixed cell 1 is made of insulating support 11, described
Insulating support 11 is fixedly mounted on insulating base by four insulating bars and is composed, and the magnetic field units 2 are mounted on fixation
On unit 1, the magnetic field units 2 are by DC power supply 201, current control knob 202, protective resistance 203, the first solenoid
204, the second solenoid 205, third solenoid 206, the 4th solenoid 207, the 5th solenoid 208, the 6th helix tube 209, iron
Core 210, resin 211 and switch 212, second solenoid 205, third solenoid 206, the 4th solenoid 207, the 5th spiral shell
Spool 208 and the 6th helix tube 209 are successively stacked together from top to bottom, and it is single that first solenoid 204 is mounted on movement
In member 4, the iron core 210 is mounted in the first solenoid 204 and between iron core 210 and the first solenoid 204 filled with tree
Rouge 211, the DC power supply 201, current control knob 202, protective resistance 203, switch 212 and the first solenoid 204 it
Between by conducting wire be connected to composition circuit, second solenoid 205 by conducting wire respectively with DC power supply 201, current control
Knob 202, protective resistance 203 and switch 212 form circuit, the third solenoid 206 by conducting wire respectively with direct current
Source 201, current control knob 202, protective resistance 203 and switch 212 form circuit, and the 4th solenoid 207 is by leading
Line forms circuit, the 5th spiral shell with DC power supply 201, current control knob 202, protective resistance 203 and switch 212 respectively
Spool 208 is made up of back with DC power supply 201, current control knob 202, protective resistance 203 and switch 212 respectively conducting wire
Road, the 6th helix tube 209 by conducting wire respectively with DC power supply 201, current control knob 202, protective resistance 203 and
Switch 212 forms circuit, and the moving cell 4 is made of lifting device 41, loading device 42 and intelligent switch 43, described
Lifting device 41 is mounted on fixed cell 1, and the loading device 42 is mounted on lifting device 41, the intelligent switch
43 are mounted on the left side of fixed cell 1, and the intelligent control unit 3 is made of processor 31 and sensor 32, the place
Intelligent switch 43 in reason device 31, sensor 32 and moving cell 4 forms circuit by conducting wire.
In embodiment, the electric current of the DC power supply 201 in magnetic field units 2 is 0~20A and the voltage of DC power supply 201 is 0
~30V.
In embodiment, 204 size of the first solenoid in magnetic field units 2 is less than cross section size and the first solenoid
204 specification is 300~7000 circles.
The second solenoid 205, third solenoid 206, the 4th solenoid the 207, the 5th in embodiment, in magnetic field units 2
Solenoid 208 and 209 size of the 6th helix tube are greater than cross section size and their specification is 300~7000 circles.
The first solenoid 204, the second solenoid 205, third solenoid the 206, the 4th in embodiment, in magnetic field units 2
Solenoid 207, the 5th solenoid 208 and the 6th helix tube 209 are all placed using vertical.
For utility model device when electric current is excessive, magnetic field strength is excessive, and magnetic force is excessive, and steel fibre does apparent acceleration fortune
It is dynamic, it will lead to and generate gap between fiber and concrete.When electric current is too small, magnetic field acts on steel fibre unobvious.Determine electricity
After the initial size of stream, turned on the switch after regulating and controlling the initial position of current control knob 202, it is right by current control knob 202
First solenoid 204, the second solenoid 205, third solenoid 206, the 4th solenoid 207, the 5th solenoid 208 and the 6th spiral shell
Adjustment of the coil 209 under certain sequence changes the different superposition situations of electromagnetic field in different time period, to guide steel fine
The different motion situation of dimension in different time period.The addition of electromagnetic field mainly makes the arrangement of steel fibre more be intended to erect
Histogram is to vertical direction is that tensile stress direction is thus also effective fiber main arragement direction in fiber concrete, vertically
The steel fibre of arrangement can effectively share tensile stress.For the crack generated, the steel fibre across crack two sides can hinder
The further development of crack arrest seam, by reducing the width in crack, the crack resistance of Lai Tigao concrete；Wherein not with tensile stress direction
Completely the same steel fibre has relationship, more deviation tensile stress side to the castering action of cracking of reinforced concrete and the departure degree in direction
It is smaller to castering action.With the steel fibre of crack same level to the promotion of cracking of reinforced concrete almost without effect.Therefore change
The intensity of fiber concrete is also improved while the arrangement of kind steel fibre.
First solenoid 204 is vacantly placed on vertically right above mold, and is made at mold axle center and 210 axle center of iron core
In overlapping positions.First solenoid 204 accesses current control knob 202 to change to be passed through and be powered inside the first solenoid 204
Size of current and current direction, thus the direction that magnitude of field intensity and magnetic field that regulation is suitble to are suitble to.Controllable magnetic force size
The rate of steel fibre movement can be changed.The magnetic field force that it is generated is to the steel fibre in the perspective plane direction of helical tube section
Action direction is opposite with gravity direction；The magnetic field force of the steel fibre on the perspective plane about non-threaded tube section, have one to axle center
Horizontal component and one with the vertical component of gravity reversal, move the steel fibre being magnetized to gravity opposite direction.Required electricity
The size of magnetic force is related with the workability of steel fiber reinforced concrete mixture, and electromagnetic force needed for workability is better is smaller, workability
Poorer, required electromagnetic force is bigger.Concrete is in solid-liquid state in process of vibrating, and workability is good, and steel fibre can produce
A certain amount of yaw motion.The improvement of the better concrete of workability, fiber architecture is better.After Vibration Technology concrete i.e. into
Enter maintenance processes, in the process, inside concrete fiber not will receive external influence, fiber architecture direction and spatial position compared with
For stabilization, spatial arrangement uniform steel fiber reinforced concrete consistent with magnetic direction can be formed after hardening.The electricity that steel fibre is subject to
Magnetic force, which is greater than the movement that coagulation soil resistance generates straight up, leads to the influence of deposition to make up gravitational effect, makes in concrete
The phenomenon that close distribution, is alleviated under dredging on steel fibre, effectively increases the intensity of fiber concrete.
The selection of the helical pipe size should be less than cross section size.Due to the guidance of magnetic induction line, the steel of side wall is fine
Dimension has the trend internally moved, this also slows down side wall fiber in process of vibrating to a certain extent and is accumulated in by side wall constraint
Adverse effect caused by wall effect caused by the inside of template.
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should be pointed out that pair
For those skilled in the art, several improvements and modifications without departing from the principle of the utility model,
It should be regarded as the protection scope of the utility model.
Claims (5)
1. a kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP, it is characterised in that: including fixed cell
(1), magnetic field units (2), intelligent control unit (3) and moving cell (4), the fixed cell (1) is by insulating support (11)
Composition, the insulating support (11) You Sigen insulating bar, which is fixedly mounted on insulating base, to be composed, and the magnetic field is single
First (2) are mounted on fixed cell (1), the magnetic field units (2) by DC power supply (201), current control knob (202),
Protective resistance (203), the first solenoid (204), the second solenoid (205), third solenoid (206), the 4th solenoid
(207), the 5th solenoid (208), the 6th helix tube (209), iron core (210), resin (211) and switch (212), described the
Two solenoids (205), third solenoid (206), the 4th solenoid (207), the 5th solenoid (208) and the 6th helix tube
(209) it is successively stacked together from top to bottom, first solenoid (204) is mounted on moving cell (4), the iron
Core (210) is mounted in the first solenoid (204) and between iron core (210) and the first solenoid (204) filled with resin
(211), the DC power supply (201), current control knob (202), protective resistance (203), switch (212) and the first helical
Manage (204) between by conducting wire connection composition circuit, second solenoid (205) pass through conducting wire respectively with DC power supply
(201), current control knob (202), protective resistance (203) and switch (212) form circuit, the third solenoid
(206) by conducting wire respectively with DC power supply (201), current control knob (202), protective resistance (203) and switch (212) group
At circuit, the 4th solenoid (207) by conducting wire respectively with DC power supply (201), current control knob (202), protect
Protect resistance (203) and switch (212) form circuit, the 5th solenoid (208) pass through conducting wire respectively with DC power supply
(201), current control knob (202), protective resistance (203) and switch (212) form circuit, the 6th helix tube
(209) by conducting wire respectively with DC power supply (201), current control knob (202), protective resistance (203) and switch (212) group
At circuit, the moving cell (4) is made of lifting device (41), loading device (42) and intelligent switch (43), described
Lifting device (41) is mounted on fixed cell (1), and the loading device (42) is mounted on lifting device (41), described
Intelligent switch (43) is mounted on the left side of fixed cell (1), and the intelligent control unit (3) is by processor (31) and sensor
(32) it forms, the intelligent switch (43) in the processor (31), sensor (32) and moving cell (4) is made up of conducting wire
Circuit.
2. a kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP according to claim 1, special
Sign is: the electric current of the DC power supply (201) in the magnetic field units (2) is the voltage of 0~20A and DC power supply (201)
For 0~30V.
3. a kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP according to claim 1, special
Sign is: the first solenoid (204) size in the magnetic field units (2) is less than cross section size and the first solenoid
(204) specification is 300~7000 circles.
4. a kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP according to claim 1, special
Sign is: the second solenoid (205), third solenoid (206), the 4th solenoid (207) in the magnetic field units (2),
5th solenoid (208) and the 6th helix tube (209) size are greater than cross section size and their specification is 300~7000
Circle.
5. a kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP according to claim 1, special
Sign is: the first solenoid (204), the second solenoid (205), third solenoid (206) in the magnetic field units (2),
4th solenoid (207), the 5th solenoid (208) and the 6th helix tube (209) are all placed using vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199536.7U CN209682546U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199536.7U CN209682546U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209682546U true CN209682546U (en) | 2019-11-26 |
Family
ID=68596974
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822199536.7U Expired - Fee Related CN209682546U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209682546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483723A (en) * | 2018-12-26 | 2019-03-19 | 南京工程学院 | A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP |
| CN114368055A (en) * | 2022-01-17 | 2022-04-19 | 河北工业大学 | Planar directional steel fiber concrete preparation device |
-
2018
- 2018-12-26 CN CN201822199536.7U patent/CN209682546U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483723A (en) * | 2018-12-26 | 2019-03-19 | 南京工程学院 | A kind of intelligent positioning fiber system for reinforcing steel fiber reinforced concrete suitable for FRP |
| CN109483723B (en) * | 2018-12-26 | 2024-05-03 | 南京工程学院 | Intelligent directional fiber system suitable for FRP reinforced steel fiber concrete |
| CN114368055A (en) * | 2022-01-17 | 2022-04-19 | 河北工业大学 | Planar directional steel fiber concrete preparation device |
| CN114368055B (en) * | 2022-01-17 | 2024-03-19 | 河北工业大学 | Plane directional steel fiber concrete preparation device |
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