CN1190302C - Method for producing in continuous installation a compacted rolled concrete composition reinforced with fibres, and continuous installation therefor - Google Patents
Method for producing in continuous installation a compacted rolled concrete composition reinforced with fibres, and continuous installation therefor Download PDFInfo
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- CN1190302C CN1190302C CNB018189598A CN01818959A CN1190302C CN 1190302 C CN1190302 C CN 1190302C CN B018189598 A CNB018189598 A CN B018189598A CN 01818959 A CN01818959 A CN 01818959A CN 1190302 C CN1190302 C CN 1190302C
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- fiber
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- conveyer belt
- concrete
- vibration
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
- E04C5/076—Specially adapted packagings therefor, e.g. for dosing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/404—Pre-treatment of fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
Abstract
The manufacturing process for reinforced concrete includes supplying a vibrating dosing machine with pre-pasted metal fibres. The fibres and a hydraulic binding agent are added at a fixed proportion, prior to the addition of mixing water to achieve an output with between 90 and 150 liters of water per cubic meter of dry constituents. The process for continuous manufacture of reinforced concrete includes supplying a vibrating dosing machine with plates of pre-pasted metal fibres in order to deliver them to a conveyor. The fibres are delivered at a proportion of between 25 and 60kg of fibre per cubic meter of dry concrete constituents prior to the fibre addition. A hydraulic binding agent is then added to the mixture in the proportion of between 180 and 400 kg per cubic meter of dry concrete constituents. The proportion of mixing water is then determined in order to ensure that the mixer delivers a constant output with a proportion of water between 90 and 150 liters per cubic meter of dry constituents.
Description
Technical field
The present invention relates to a kind of method of in continuous device, making a kind of compacted concrete synthetic of strengthening by metallic fiber, and a kind of continuous device and a kind of continuous fiber measurer of implementing this manufacture method.That implements that described method obtains can be laid continuous highway pavement or do not had the industrial place of joint by fiber strengthened compacted concrete synthetic.
Background technology
In order to lay a kind of firm placing concrete highway pavement that does not have joint, known a kind of method is called continuity reinforcement(bar) coagulation local method, and wherein, diameter is generally 16 millimeters steel bar and couples together continuously each other on the whole length of highway.In case complete steel bar, generally use a kind of sleiding form machine placing concrete.But the continuity reinforcement(bar) concrete is a kind ofly to use heavy technology, and cost is higher.
Traditional shake smash or placing concrete after strengthening by steel fibre; can manufacturing dimension (often to be protected to 2000 square metres industrial no seam slab greatly; therefore stand harsh weather and variations in temperature not as highway), the characteristic of fiber leaves at interval seam.On the contrary, these concrete can not be effective to lay continuous no seam highway pavement so far, although notice this application.In fact, higher cement and moisture batching produce fluid power and shrink thermal contraction in addition in these concrete.Mechanical stress is such: fiber can not be controlled them.Therefore, concrete shrinkage phenomenon causes obviously bigger crackle than slab, and the crackle aperture often reaches several millimeters.Therefore, must stay seam at highway pavement, make the contraction localization, reduce cracking, this impairs a kind of superiority in economy of continuous highway pavement, and the development of smashing or watering the fiber concrete highway pavement is shaken in restriction greatly.
Compacted concrete synthetic and traditional pouring or shake are smash concrete difference and are, with regard to similar or superior mechanical property, are necessary to reduce the hydraulic binder batching and reduce water content.In above-mentioned two kinds of traditional concrete, be well known that the insertion metallic fiber.The minimizing of binder formulation and water content makes compacted concrete have the less superiority of fluid power contraction, therefore, crackle formation effect is not obvious: as long as use the fiber of being furnished with the very good anchoring piece of performance in concrete matrix, as long as correct these fibers that add when making concrete just can use the compacted concrete of being strengthened by metallic fiber to lay continuous highway pavement.The compacted concrete moisture content less can also obtain enough bearing capacitys, so that use road machine material spreader (finishing paving of pitch protective layer), makes it compacting with vibratile compacter or pneumatic compacting machine then, and last, without delay is delivered for use.On the contrary, the denseness of placing concrete need be used slip mask machinery or vibrating machine with conventional art, and will just can be delivered for use after being generally 7 days fully solidifying a period of time.
The metallic fiber that industrial slab uses draws fiber often, generally has diameter and be 1 millimeter silk.The effective anchoring type of existing various fiber in concrete matrix differs from one another.
In order to solve the problem of fibril aggregation balling-up, the striving direction of some fibre manufacturer is the geometry and the surface patterns of fiber, can directly use in the back of dispatching from the factory, and the processing that need not to add is handled.On the contrary, laboratory test and building site experience show, it is not that performance is best on the market that these fibers add aspect the crackle control of metallic fiber synthetic at mechanical performance and concrete at least.
Be known that, French Patent (FRP) 2225392 proposes a kind of method, in a kind of concrete, add the metal packing that is used to strengthen, these metal packings are made of metal material group, these metal material groups are bondd by a kind of binding material that is suitable for by a kind of dissolution with solvents, this method is, described metal material group joined itself constitute in the concrete synthetic, stirring makes it to form macroscopic well distributed then, then dissolve described binding material and continue and stir synthetic, make it to form macroscopic well distributed.In fact, be the tabular fiber of making that in concrete, adds gluing in advance.Carry out the stirring of two completely different steps, perhaps stir along the line on the automobile that is called trucd mixer more than 15 minutes being installed in, perhaps in the agitator of equipment, keep about 1 minute stirring.
Therefore, be noted that before the present invention to have the pouring of making tabular fiber reinforcement of gluing in advance or the manufacturing of extruded concrete and on discontinuous equipment or on trucd mixer, carry out all the time.Fiber perhaps joins in the trucd mixer by manually or by a kind of special-purpose machinery or directly join in the agitator of equipment.Use trucd mixer, defective is that mixing quality is undesirable, the fiber skewness.Manually place packed fiber on the feed strip or directly join agitator, defective is that batching is wrong, and efficient is not high.Use special-purpose machinery to raise the efficiency, but problem is that the simple and mechanical required fibre weight of each sand cutting slurry of will making at the most joins in the agitator of continuous device.Be noted that by fiber strengthened pouring or extruded concrete generally to be applied to the such field of industrial slab, often adopt manual operation, perhaps be applied to the such civil engineering project of foundation pile.Feed required production efficiency in building site is lower, is suitable for making on discontinuous equipment.
On the contrary, road engineering is the mechanization engineering, requires efficient mechanical.Material that handled hydraulic binder in these building sites and road require to reach the degree of hourly output apparently higher than the equipment of the hourly output of the discontinuous equipment of tradition with concrete demand (for example for continuity reinforcement(bar) concrete building site or compacted concrete building site).The defective of discontinuous equipment is, in production cycle, first procedure at first is that various material is delivered in the agitator, and agitator stirs then, and these material are mixed, and last, the material that agitator will stir is dumped on the haulage truck.Therefore, another kind of equipment can needn't turn round under the situation that each material loader cycle is shut down at agitator.This equipment is called " continuous device " because agitator is all the time by a conveyer belt feed, requirement gather materials and hydraulic binder is loaded on this conveyer belt, in the concrete manufacture process, agitator is only just shut down to the haulage truck discharging time.Therefore, the production efficiency of continuous device is apparently higher than the discontinuous efficiency of equipment of majority.Continuous device is very suitable for road engineering, because continuous device is more convenient for moving on to another building site from a building site than discontinuous equipment.Therefore, continuous device is called " vehicular equipment " even is called " super vehicular equipment " (in other words, in this case, needing only two towing motorcars can carry).
French Patent (FRP) 2633922 proposes a kind of method of making by fiber strengthened compacted concrete, according to this method, add 7 to 15% cement or road continuously with binding material, the water of 4 to 7% (weight) and the metallic fiber of 0.8 to 4% (weight) to the agitator of equipment, these material are added by a special batching device, and other material is made of 0 to 31.3 millimeter rubble substantially.But the document is not carried this special batching device fully, does not carry fiber yet and joins mode in the agitator by measurer.
French Patent (FRP) 2654830 proposes a kind of continous batching device that adds fiber in road bridge tunnel engineering construction material.But the problem that this device exists is that fiber forms ball or thorn in the fiber-distribution apparatus of court by the conveying device feed of fiber strengthened material.According to the document, the vibra shoot of distributor is with fiber separation device, for example be with tooth rotor, pressurized air nozzle or reciprocating rake tool to be connected, so that break these fibers thorns.But all these separators are not all fully described in the document or are illustrated, and the owner can't effectively use.
The correct adding metallic fiber of continuous device is bigger than discontinuous equipment difficulty: required fibre weight is joined in the concrete with desirable accuracy, will avoid occurring the problem of fibril aggregation balling-up simultaneously.
Summary of the invention
The present invention is intended to propose still unsolved so far these the difficult desired solution of a kind of solution, the feed problem of the metallic fiber plate of gluing especially in advance.The inventive method proposes a kind of in the continuous device manufacture method by fiber strengthened compacted concrete that can effectively be avoided or limit at least to the full extent the fibril aggregation balling-up by the fabrication stage of fiber strengthened compacted concrete.Another purpose is to avoid and limiting the fibril aggregation balling-up by the transportation and the operational phase of fiber strengthened compacted concrete.At last, the present invention also is intended to avoid the formation of these balls.The purpose of the inventive method also is:
-from the tabular fiber of gluing in advance, fiber is joined the compacted concrete of manufacturing with the compatible high efficiency of output that is used for the continuous device in the very high building site of building the road of mechanization degree;
-glue of the tabular fiber of bonding is dissolved into discharge maximum fibers and brings into play its independent crooked booster action, and the crackle of the compacted concrete that uses on the control building site forms; Another purpose is to discharge all fibers that is packaged into pre-paddle in advance in concrete; And
Whenever these fibers of-use can both extract required synthetic at once the manufacturing fiber concrete, the batching accuracy that is obtained is-5% to+10% of a required standard batching value, and this is very important for the suitable performance and the uniformity that the concrete that uses on the assurance building site adds the fiber synthetic.
For this reason, the present invention is intended to propose a kind of method of making by fiber strengthened compacted concrete synthetic on continuous device, and this method comprises the steps:
(1) supply with the multiple pellet of on a conveyer belt, carrying continuously,
(2) metallic fiber is supplied on the described conveyer belt continuously from a vibration measurer,
(3) pellet and fiber, a kind of hydraulic binder and the mixing water that conveyer belt is carried supplies in the agitator continuously, wherein can comprise one or more concrete additives,
It is characterized in that:
Described step (2) is to supply with the pre-gluing metallic fiber of vibration measurer plate, so that described fiberboard and/or the described fiber that comes unstuck are transported on the conveyer belt of described step (1), described fiber is supplied with the ratio of every cubic metre of no fiber concrete siccative 25 to 60 kg of fibers;
Step (3) is to supply with hydraulic binder with the ratio of 180 to 400 kilograms of every cubic metre of no fiber concrete siccatives, the ratio of mixing water be specified to agitator supply with continuously a kind of its water content be every cubic metre of no fiber concrete siccative 90 to 150 premium on currency by fiber strengthened concrete composition.Supply with pre-paddle shape fiber, can eliminate or reduce the quantity and the big fibrous nodules of fibrous nodules in the concrete composition.Therefore, be immersed in fiberboard in the solvent in advance at the strong shear stress that produces by agitator with add at the propeller-blade place under the synergy of water and come unstuck.
Transport without trucd mixer by the most handy dump truck of fiber strengthened compacted concrete, and the most handy planisher spread concrete on road, to keep superperformance by fiber strengthened concrete composition.
The inventive method is used to make the solvent, for example water that keep fiber to become the peptization of plate to separate to supply to conveyer belt in described step (1) with a kind of, and described solvent supplies on the conveyer belt near the drop point place of the fiber of being supplied with by measurer or drop point.
According to an embodiment, measurer comprises a vibration proportion container and a vibra shoot or a weighing conveyer belt in order at least.For example, the inventive method is to described vibra shoot donor solvent, makes fiber be locally bathed in its bottom at least and is marked with in the vibra shoot of solvent, and supply on the conveyer belt from described vibra shoot with described solvent.
According to other embodiment, the inventive method is with at least one nozzle that is positioned at fiber drop point downstream solvent to be sprayed onto on the conveyer belt.
The inventive method supplies to fiber on the conveyer belt after supplying with first kind of pellet and before supplying with last a kind of pellet, and fiber is brought in the various pellet material.
The further feature according to the present invention, the inventive method are to calculate the ratio that supplies to the mixing water in the agitator in described step (3) according to the intrinsic water content of each pellet that step (1) is supplied with.
In one embodiment, the inventive method is to supply with the full scale pellet of 83 to 93% (weight) of no fiber concrete siccative in step (1), supply with a kind of cement or a kind of hydraulic binder in step (3) with the ratio of 7 to 17% (weight) of no fiber concrete siccative, wherein, 0.3 the hydraulic binder to 1.8% (weight) is made of a kind of concrete setting delay additive and/or plasticizer that joins in the mixing water, with lubricated intergranular contact, postpone concrete solidifying.
The present invention also is intended to propose a kind of continuous device of implementing preceding method, and it comprises:
-a series of intervals are arranged in a hopper on the electronic conveyer belt, and each hopper is suitable for a kind of pellet is delivered on the conveyer belt, and each hopper is connected with a weight or volume analyzer that the quantity of the pellet of described hopper conveying is measured,
-one is suitable for metallic fiber is delivered to vibration measurer on the conveyer belt, and described measurer is connected with a gravimetry device that the quantity of the fiber carried is measured,
The container of-one or more splendid attire hydraulic binders, each container a kind of hydraulic binder of providing and delivering, each container is connected with a weight or volume analyzer that the quantity of the binding agent of being provided and delivered is measured, another container can be used to provide and deliver a kind of additional powder, for example flying dust
-one mixing water water-feed, described water-feed is connected with a mixing water water regulator,
-one agitator, described agitator comprises that one is injected into injector grid in the teeter chamber with mixing water, described injector grid is supplied with mixing water by described water regulator, the inlet of hydraulic binder from described container transport to agitator, fiber and pellet synthetic are delivered in the agitator by conveyer belt, to carry out mixing by all synthetics of fiber strengthened compacted concrete
It is characterized in that, this equipment comprises a solvent feeder, so that near exit that vibrates measurer or outlet a kind of solvent is delivered on the conveyer belt, described solvent is used to dissolve the glue of fiberboard, thereby discharges the pre-gluing metallic fiber by the plate of described measurer dispensing.Described solvent feeder advantageously is arranged in the downstream of the first pellet feeding hopper and the upstream delivery solvent of a pellet feeding hopper in the end.
In one embodiment, the vibration measurer comprises one first vibration container, first vibration container has a screw inclined plane on its cylinder shape inner wall, fiberboard is suitable for that the bottom from container vibrates mobile towards the top on this screw inclined plane, described screw inclined plane is extended by a medial launder at its top, described medial launder leads to the top of one second vibration container, second vibration container also has a screw inclined plane on its cylinder shape inner wall, fiberboard is suitable for moving towards the top from the bottom of second vibration container on this screw inclined plane, the screw inclined plane of second vibration container leads on the vibra shoot, this vibra shoot is delivered to fiber above the conveyer belt, and described solvent feeder comprises the nozzle at least one upstream extremity that is positioned at described vibra shoot substantially.
The benefit of two vibration containers of arranged in series is to eliminate the unshapeliness phenomenon of supplying with and distributing fiber from unique one first vibration container, and first vibration container is supplied with fiber from the lift cart of the full fiberboard of big packing in discontinuous mode regularly by one.
First vibration container advantageously comprises the articulated jib of putting between between screw inclined plane top and medial launder, described articulated jib is suitable for blocking path towards medial launder at a detent position, send fiber the central authorities and the bottom of first vibration container back to, and the controlled fiber of quantity is passed through towards described medial launder a variable enable possition.
According to further feature, that described medial launder comprises is parallel, be positioned at substantially on the perpendicular, its upstream extremity is fixed and its downstream is free-ended vibration refers to bar, so that the fiberboard that can separately pile up, in the fiberboard of second container is supplied with, obtain more well-balanced distribution, refer to that the longitudinal extension of bar is parallel to the moving direction of described fiberboard.
In one embodiment, second vibration container is furnished with a height sensor that the height of the fiber in second vibration container is detected, described detector is connected with a control motor of articulated jib, surpass or during predetermined limit value of less than, described arm is moved towards its detent position or towards its enable possition with the quantity of the fiber in convenient second vibration container.
According to further feature, second container is furnished with a frequency modulator, and changing its vibration and fiber supply thereof, the weighing apparatus of the fiber number that described modulator can be supplied with by second container outlet is controlled.In fact, second container can be installed on the scale, and the quantity delivered of fiber is fixed by central authorities' control of the measurer of PCO plant control office.The equipment operator can import desirable fiber supply on digitial controller, then, equipment of the present invention moves automatically, the controlled frequency modulator.Therefore, fiber supply can and be printed editor and be checked by chart recorder.
Equipment of the present invention advantageously is furnished with a CCU, this CCU is connected with the various weight or volume detector of hopper, container and measurer and the water regulator of mixing water feeder, so that calculate and control the water yield that supplies in the agitator according to the quantity delivered of water content, every kind of pellet and/or the quantity delivered of solvent.
According to further feature, each hopper and each container lead on the conveyer belt of weighing by the drive motor driving of itself, the speed of motor can by CCU according to claim weight controlled, to control the quantity delivered of concrete every kind of material.
Description of drawings
With reference to accompanying drawing and non-limiting example, other content of the present invention, feature and advantage will be better understood.
Accompanying drawing is as follows:
Fig. 1 is the schematic diagram of a whole set of continuous device of the present invention;
Fig. 2 is the local enlarged diagram of a hopper being connected with a weighing machine conveyer belt;
Fig. 3 is a stereogram that can be used for the fiberboard of the inventive method;
Fig. 4 is the schematic side view that is used for the vibration measurer of present device;
Fig. 5 is the schematic top plan view that is in the articulated jib enable possition along V-V line among Fig. 4;
Fig. 6 is similar to Fig. 5, and the partial view that articulated jib is in the close position is shown;
Fig. 7 is the partial enlarged view of agitator shown in Figure 1;
Fig. 8 is the profile along VIII-VIII line among Fig. 7;
Fig. 9 illustrates a screen page that shows on the terminal of CCU shown in Figure 1.
The specific embodiment
Fig. 1 illustrates a whole set of continuous device that is used to make by fiber strengthened compacted concrete.
This equipment comprises and shown in Figure 2 for example be used for splendid attire and distribute one first hopper 1 of rubble and first scale 2 that its support is hinged on a point 3 of hopper 1 lower end substantially.Endless conveyor 4 of the bracket supports of scale 2, conveyer belt 4 drives the drive motor 7 that rollers 5 rotate by one by a chain 6 and is driven, and driving shaft is fixed on an end of the support of scale 2 with respect to articulated elements 3.The other end of scale 2 is connected with a stress ga(u)ge 8 on being suspended at equipment rack B, and frame B also supports first hopper 1.Shown in arrow F1, the rubble in first hopper 1 drops on the weighing conveyer belt 4, and weighing conveyer belt 4 is driven along arrow F2 direction inhour and rotates, and the left end that makes rubble such as arrow F3 be shown in the weighing conveyer belt drops on the following conveyer belt 9.Stress ga(u)ge is connected on the CCU U, as shown in Figure 1 by a cable 10.Obviously, first conveyer belt 9 also is electronic, and its motor and above-mentioned motor 7 can be controlled by CCU U.
First conveyer belt 9 gathers materials two kinds of raw materials and all is discharged on the second electronic conveyer belt 19, as shown in Figure 1.Other two hoppers 21 and 31 are positioned at the top of second conveyer belt 19, and the 3rd hopper 21 is used for dispensing and constitutes concrete the third pellet, and the 4th hopper 31 can not use in embodiments of the present invention.Obviously, the quantity of hopper can change, and for example can dispose six hoppers, and splendid attire is used for dissimilar concrete dissimilar pellets.As other hopper, each hopper 21 all is connected with a scale 22,32 with 31, and each scale is connected with itself motor 27,37 and the stress ga(u)ge of itself 28,38.Each stress ga(u)ge and each motor can be connected on the CCU U by circuit 30 and 40.
As shown in figs. 1 and 4, present device also comprises a measurer D, and measurer D is furnished with a vibra shoot 41, and the port of export of vibra shoot 41 leads to an inlet 42 that is positioned at the 3rd hopper 21 upstreams, second conveyer belt, 19 tops.
Measurer D is furnished with a boost container 43, boost container 43 has guiding guide wheel 43a in vertical guide groove 44 in its lower end, have guiding guide wheel 43b in vertical guide groove 45 in the top, and the top of guide groove 45 is horizontal curvature, dump so that be in high-order boost container 43, as shown in figs. 1 and 4.Boost container 43 is used to load big bag (its weight for example is 1100 kilograms) precoating glue fibre board P, for example fiberboard of type shown in Figure 3.For example, these fiberboards are discharged to the boost container 43 that is in low level, shown in arrow F4 among Fig. 4 from the big bag that fiberboard is housed.
When boost container 43 is in a high position its content is discharged in one first hydrostatic column 46, shown in arrow F5, hydrostatic column 46 is furnished with a baffle plate 47 in the top, in case fiberboard P falls the outside of hydrostatic column.
As illustrated in Figures 5 and 6, fiberboard carries out inhour and rotates, rise towards the top from the bottom of container, shown in arrow F6, an articulated jib 54 is arranged in the top of container 46, make fiberboard or in the middle of one guide groove 55 move, (see figure 5) shown in arrow F7, perhaps move, make fiberboard return the bottom of container, (see figure 6) shown in arrow F8 towards a plate 56 that tilts to container 46 central authorities.Shown in circuit 57, the articulated elements of arm 56 is electronic, and its motor can be controlled by CCU U by sensor 70.
Guide groove 55 is furnished with basic finger bar 58 of locating along the moving direction F7 of fiberboard parallel to each other, and fiberboard is distributed preferably.Guide groove 55 leads to the top of less second hydrostatic column, 59 central authorities, and container 59 also has a supporting member 60, in both sides 61, one groups of springs of two vibrating motors and damper 49 is installed on the supporting member 60 and is installed on the above-mentioned intermediate support 50a.Second small container 59 also has a screw inclined plane 63 on the wall within it, makes fiber and/or fiberboard carry out the inhour rotation, rises to the top from the bottom, shown in arrow F9 among Fig. 5.Screw inclined plane 63 leads to one second guide groove 64 at its top, guide groove 64 radially extends towards external container, leads to the top of the vibra shoot 41 of being furnished with the vibrating motor (not shown).Vibration refers to that bar can be configured in the outlet of guide groove 64.Vibra shoot 41 is installed on the column 66 by spring 65 at its upstream end, is suspended on the frame B by spring 67 in its downstream.At the upstream extremity of vibra shoot 41, can dispose at least one and can for example regulate flow by CCU U from 68, one valves 69 of nozzle of network of rivers water spray.In an embodiment, vibra shoot 41 can inject about half centimetre water, so that fiberboard is carried out gluing.Fiber is passing through direction shown in arrow F10 in the vibra shoot 41.Fiber and water or solvent are fallen on above-mentioned second conveyer belt 19 from vibra shoot 41.In a most preferred embodiment shown in Fig. 3 and 4, nozzle 68 is arranged in the top of last guide groove 64, makes fiber prolong the moistening time before falling on the conveyer belt.
As shown in Figure 4, measurer D is placed on the S of ground, perhaps is placed on the movable trailer, as frame B.
Below middle guide groove 55, be furnished with a height sensor, ultrasonic sensor 70 for example, be used for detecting the height of second container, 59 fibers, control moving of articulated jib 54 automatically greater than a predetermined maximum value according to height in second container.Owing to be arranged in juxtaposition two containers, therefore can avoid supply and maldistribution at measurer outlet fiber, under the situation of using a unique container, this inhomogeneous be inevitable.
Articulated jib 54 is controlled with electronic installation according to the information that sensor 70 provides with respect to the position of middle guide groove 55, thereby changes the quantity delivered of the fiber of carrying from first container 46 towards second container 59.
Obviously, can dispose other system towards the conveyer belt of present device dispensing fiberboard.
In an embodiment, can select such fiberboard P for use: its metallic fiber is made of cylindrical substantially wire, these wires have a straight substantially vertical middle body, vertically middle body is extended by an embedded part in each side, embedded part has the end sections of a top bending, the shape of the end sections of top bending is the shape that two adjacent fibers are connected, described wire:
-diameter is 0.38 to 1.05 millimeter,
-total length is 19 to 80 millimeters,
The length of-end sections is 1.5 to 4 millimeters,
-between middle body and each end sections, have at least 0.75 millimeter lateral separation,
-top curved angle minimum definite between each embedded part and middle body equals 20 °, and
-the angle that obtains between each embedded part and middle body is less than or equal to 160 °,
-angle of acquisition between each embedded part and end sections, and
-have a minimum tensile strength of 900 newton/square millimeters.
The wire that constitutes fiber advantageously has 0.65 to 0.85 millimeter diameter and 65 to 85 total length/diameter ratio.Particularly, fiber has total length/diameter ratio of about 80.According to a feature, the end sections of each top curved is formed from a straight portion branch that links to each other with middle body by the described sloping portion with at least two elbows.
The fiber that the present invention uses advantageously diameter is that 0.75 millimeter, total length are the fiber that 60 millimeters, tensile strength are at least 1100 newton/square millimeters, and for example trade mark is Dramix 80/60 " fiber.
Fiberboard P comprises fiber f1, f2...fn, and sum for example is 20.
Among the embodiment that here addresses, before metallic fiber was discharged at before pouring the 3rd layer of pellet on the two-layer pellet.
Second conveyer belt 19 is discharged at pellet and total fiber on one the 3rd conveyer belt 79, and the 3rd conveyer belt 79 leads to an agitator 80.
Present device comprises one, two or more hold-up vessel 81, each container 81 is equipped with a kind of hydraulic binder, for example a kind of standard cement (Portland cement) or latarge cement, perhaps a kind of road binding agent, for example the trade mark of CALCIA company production is the product of " LIGEX ".The pipeline that a worm screw 82 is housed is led in the following outlet of each hold-up vessel 81, so that binding agent is transported to a hopper 83.Hopper 83 can be admitted the hydraulic binder from hold-up vessel.Another conveying worm 84 is led in the following outlet of hopper 83, and worm screw 84 is transported to hydraulic binder on the weighing conveyer belt 85 in the casing 78, and an end of weighing conveyer belt 85 is connected with a stress ga(u)ge 86, is used to claim the weight of hydraulic binder.
Obviously, other motor of height sensor 70, scale 51 and measurer D is connected with CCU U by different circuit 71 to 73.
Weighing conveyer belt 85 is transported to the double-deck conveyer belt that two conveying worms 87 are housed with hydraulic binder, so that substantially near the inlet of the mixture of fiber of being carried by the 3rd conveyer belt 79 and pellet described hydraulic binder is incorporated in the above-mentioned agitator 80.
Agitator is also supplied with mixing water by the network of rivers, shown in valve 88, and supplies with the plasticizer additives of being adorned in the container 89.Mixing can mix from the additive of container 89 and water from the network of rivers 88 with valve 90.The mixture of water and additive is assigned in the agitator 80 by a pipe network 91, and pipe network 91 is drilled with the hole, is used for above two shafts 92 mixture being injected into agitator.As shown in Figure 8, pipe network 91 advantageously has an import of supplying with mixture simultaneously in the both sides of agitator, and pipe network comprises a parallel U-shaped guiding device above shaft 92.Each shaft 92 has radial blade 93, and blade 93 is furnished with the plate that is inclined to a discontinuous screw inclined plane of formation in its end.The blade of each shaft is partitioned into whole compositions that can stir by fiber strengthened compacted concrete when driving two shaft backward rotation, shown in arrow F11 among Fig. 8.
In an embodiment, adopt 0.8% ratio (weight) of hydraulic binder, additive can make the concrete set retardation a few days.
Outlet at agitator 80, concrete and fibre blend arrive one the 4th conveyer belt 99, conveyer belt 99 is delivered to a hopper 100 with this synthetic, the bottom of hopper 100 is sealed by a housing, this housing is made of two swing arms 101, these two arms are suitable for separately, so that the synthetic that is equipped with in the hopper 100 is discharged on the truck 102.
The unlatching of swing arm 101 is by responsible person's control of present device, so that to the truck discharging.
CCU U is connected with a terminal, and terminal comprises a screen 110 and a keyboard 111, is used to import the instruction numerical value of the speed of the quantity delivered of each different synthetics and each different conveyer belts.
Fig. 9 illustrates a page of screen 110 when working among embodiment of the inventive method.
As shown in Figure 9, it is 5 to 12 millimeters that D1 illustrates diameter, quantity delivered is 75.4 tons/hour, natural water content is about 1.70% rubble, these rubbles are used to constitute 44% the dry synthetic of no fiber concrete, it is 0 to 4 millimeter that D2 illustrates diameter, quantity delivered is 48.3 tons/hour, water content is 4.30% flour sand, these flour sands are used to constitute the dry synthetic of no fiber concrete of 27.30% (weight), it is 0 to 4 millimeter that D3 illustrates diameter, quantity delivered is 28.9 tons/hour, water content is 8.40% wet-milling sand, these wet-milling sand are used to constitute the dry synthetic of no fiber concrete of 15.80% (weight), D4 to D6 can illustrate the rubble of other type or gather materials, but do not use among this embodiment, P1 illustrates the hydraulic binder of supplying with 21.7 tons/hour quantity delivered, be used to constitute the dry synthetic of no fiber concrete of 12.9% (weight), P2 can be the another kind of additive (for example flying dust) that adds among the P1, X1 is a kind of material additive that constitutes hydraulic binder P1 0.35% (dry weight), the quantity delivered that is equivalent to 80 kilograms/hour or 80 liters/hour, X2 or X3 can be other additives, E illustrates mixing water, account for the ratio of 5.20% (weight) of concrete drier, quantity delivered is 3.3 tons/hour.
Obviously, because pellet D1 to D3 is not a siccative and contain moisture, so the water yield that will supply with is not equal to 5.5% of machine total flow.
To calculate the actual used water amount that to supply with below.For this reason, the wet amount of the no fiber concrete of promptly supplying with by machine from the machine total flow, the machine total flow is equivalent to 177.6 tons/hour, i.e. the summation of the quantity delivered of synthetic D1 to D3, P1 and E.
In order to draw the dry measure of supplying with by equipment except fiber, will the amount of wetting divided by 1+5.2%=1.052, must equal total dry measure of 168.8 tons/hour.
Therefore, theoretical water consumption equal 168.8 tons/hour * 5.2%=8.78 of this total dry measure ton/hour.
From the water yield of pellet D1 equal 0.44 * 168.8 * 0.017=1.26 ton/hour water.Equally, the water yield of pellet D2 equal 0.273 * 168.8 * 0.043=1.98 ton/hour water.For D3, the water yield equal 0.158 * 168.8 * 0.084=2.24 ton/hour water, the total water yield that perhaps equals 5.48 tons/hour for all pellets of D1 to D3 is from 8.78 tons of/hour deductions of theoretical water, and perhaps 3.3 tons/hour, this is the water yield that in fact will be provided in the agitator.
Present device is used 177.6 tons/hour quantity delivered, and this only is equivalent to 60% of its standard capability that is about 400 tons/hour, here, because the ability of the hydraulic binder measurer of use is limited to 300 tons/hour.
Can comprise gathering materials of using 70% to 100% have acute angle and near the crushing material of square configuration, granularity is 0 to 14 millimeter, to avoid the branch coagulation phenomena, the phenomenon that promptly big pellet separates.Concrete composition preferably also comprises a kind of plasticizer additives, it is lubricated and fine and close that this plasticizer additives is convenient to intergranular, can obtain the no fiber moistening concrete of density near 2400 kilograms per cubic meter, respond well, intensity is higher, can reduce the hydraulic binder batching.
Optimum moisture content determined by improved Portugal coomb's test Coomb, the concrete dry synthetic 4 and 6% between change.
Synthetic advantageously is: hydraulic binder content is near 250 to 300 kilograms of every cubic metre of no fiber dry concretes, water content is 4 to 6% of no fiber concrete siccative, perhaps be about every cubic meter of concrete 100 to 150 premium on currency, the metallic fiber batching is 30 to 40 kilograms of every cubic metre of no fiber dry concretes.In an embodiment, synthetic comprises the hydraulic binder and 110 premium on currency of 280 kilograms of every cubic metre of no fiber dry concretes.
Synthetic also advantageously comprises 0.3 to 1.8% plasticising delayed-action activator of hydraulic binder weight.
In addition, use the timely accurate dosing of fiber that present device obtains-5% and+10% between, this be with trucd mixer can not obtain.The productivity ratio of continuous device of the present invention is 200 to 1000 tons/hour concrete, but not continuous device does not generally reach this productivity ratio half.
Obviously,, be not limited to this, the present invention includes the equivalent technologies means of described member and combination thereof, and do not exceed scope of the present invention although the present invention is described in conjunction with an embodiment.
Claims (15)
1. method of making the compacted concrete synthetic of being strengthened by metallic fiber on continuous device, it comprises the steps:
(1) supply with continuously the multiple pellet of go up carrying at a conveyer belt (9,19,79) (D1, D2, D3, D4),
(2) with metallic fiber (f1 f2...fn) supplies on the described conveyer belt continuously from a vibration measurer (D),
(3) pellet and fiber, a kind of hydraulic binder (P1) and the mixing water (E) that conveyer belt is carried supplies in the agitator (80) continuously, wherein can comprise one or more concrete additives;
It is characterized in that:
Be used to make the solvent, for example water that keep fiber to become the peptization of plate to separate to supply to conveyer belt (9 in described step (1) with a kind of, 19,79) on, (f1 supplies on the conveyer belt near drop point place f2...fn) or the drop point described solvent at the fiber of being supplied with by measurer (D);
Described step (2) is to supply with vibration measurer pre-gluing metallic fiber plate (P), so that described fiberboard and/or described degumming are transported on the conveyer belt of described step (1), described fiber is supplied with the ratio of every cubic metre of no fiber concrete siccative 25 to 60 kg of fibers; And
Step (3) is to supply with hydraulic binder with the ratio of 180 to 400 kilograms of every cubic metre of no fiber concrete siccatives, the ratio of mixing water be specified to agitator supply with continuously a kind of its water content be every cubic metre of no fiber concrete siccative 90 to 150 premium on currency by fiber strengthened compacted concrete synthetic.
2. method according to claim 1 is characterized in that, measurer (D) comprises a vibration proportion container (46,59) and a vibra shoot (41) or a weighing conveyer belt in order at least.
3. method according to claim 2 is characterized in that, to described vibra shoot donor solvent, (f1 f2...fn) is locally bathed in its bottom at least and is marked with in the vibra shoot of solvent, and supplies to conveyer belt (9 with described solvent from described vibra shoot to make fiber, 19,79) on.
4. method according to claim 1 is characterized in that, (f1, f2...fn) nozzle in drop point downstream is sprayed onto described solvent on the conveyer belt (9,19,79) to be positioned at fiber with at least one.
5. according to the described method of one of claim 1 to 4, it is characterized in that, supply with first kind of pellet (D1) afterwards with supply with last a kind of pellet (D1, D2 or D3) before with fiber (f1, f2...fn) supply to conveyer belt (9,19,79) on, fiber is brought in the various pellet material.
6. according to the described method of one of claim 1 to 4, it is characterized in that, calculate the ratio that supplies to the mixing water (E) in the agitator (80) in described step (3) according to the intrinsic water content of each pellet (D1-D3) that step (1) is supplied with.
7. according to the described method of one of claim 1 to 4, it is characterized in that, supply with the full scale pellet of 83 to 93% (weight) of no fiber concrete siccative in step (1), supply with a kind of cement (P1) or a kind of road binding agent in step (3) with the ratio of 7 to 17% (weight) of no fiber concrete siccative, wherein, 0.3 the hydraulic binder to 1.8% (weight) postpones additive (X1) and/or plasticizer formation by a kind of concrete setting that joins in the mixing water, with lubricated intergranular contact, postpone concrete solidifying.
8. continuous device that is used to implement the described method of one of claim 1 to 7, this equipment comprises:
-a series of intervals are arranged in the hopper (1 on the electronic conveyer belt (9,19,79), 11,21,31), each hopper is suitable for a kind of pellet (D1, D2, D3, D4) deliver on the conveyer belt, each hopper and the volume or weight analyzer (2,12,22 that the quantity of the pellet of described hopper conveying is measured, 32) be connected
-one be suitable for metallic fiber (f1 f2...fn) delivers to vibration measurer (D) on the conveyer belt, and described measurer is connected with a gravimetry device (51) that the quantity of the fiber carried is measured,
The container (81) of-one or more splendid attire hydraulic binders (P1), each container a kind of hydraulic binder (P1) of providing and delivering, each container is connected with a weight or volume analyzer (86) that the quantity of the binding agent of being provided and delivered is measured, another container can be used to provide and deliver a kind of additional powder, for example flying dust
-one mixing water feeder (88), described feeder is connected with a mixing water water regulator (90),
-one agitator (80), described agitator comprises that one is injected into injector grid (91) in the teeter chamber with mixing water, described injector grid is supplied with mixing water by described water regulator (90), the inlet of hydraulic binder from described container transport to agitator, fiber and pellet synthetic are delivered in the agitator by conveyer belt, to carry out mixing by all synthetics of fiber strengthened compacted concrete
It is characterized in that, this equipment comprises a solvent feeder (69), so that near exit that vibrates measurer (D) or outlet, a kind of solvent is delivered to conveyer belt (9,19,79) on, described solvent is used to dissolve the glue of fiberboard (P), thereby discharges the pre-gluing metallic fiber by the plate (P) of described measurer dispensing.
9. equipment according to claim 8 is characterized in that, described solvent feeder (69) is arranged in the downstream of the first pellet feeding hopper (1) and the upstream delivery solvent of a pellet feeding hopper (21) in the end.
10. equipment according to claim 8, it is characterized in that, vibration measurer (D) comprises one first vibration container (46), described first vibration container has a screw inclined plane (53) on its cylinder shape inner wall, fiberboard (P) is suitable for that the bottom from container vibrates mobile towards the top on this screw inclined plane, described screw inclined plane is extended by a medial launder (55) at its top, described medial launder leads to the top of one second vibration container (59), described second vibration container also has a screw inclined plane (63) on its cylinder shape inner wall, fiberboard is suitable for moving towards the top from the bottom of second vibration container on this screw inclined plane, the screw inclined plane of second vibration container leads on the vibra shoot (41), this vibra shoot is delivered to conveyer belt (9 with fiber, 19,79) above, described solvent feeder comprises the nozzle (68) at least one upstream extremity that is positioned at described vibra shoot substantially.
11. equipment according to claim 10, it is characterized in that, that described medial launder (55) comprises is parallel, be positioned at substantially on the perpendicular, its upstream extremity is fixed and its downstream is free-ended vibration refers to bar (58), so that the fiberboard that can separately pile up, in the fiberboard (P) of second container is supplied with, obtain more well-balanced distribution, refer to that the longitudinal extension of bar is parallel to the moving direction of described fiberboard (F7).
12. according to claim 10 or 11 described equipment, it is characterized in that, first vibration container (46) comprises the articulated jib of putting between between screw inclined plane (53) top and medial launder (55) (54), described arm is suitable for blocking path towards medial launder at a detent position, send fiber the central authorities and the bottom of first vibration container back to, and the controlled fiber of quantity is passed through towards described medial launder a variable enable possition.
13. equipment according to claim 12, it is characterized in that, second vibration container (59) is furnished with a height sensor (70) that the height of the fiber in described second vibration container is detected, described detector is connected with a control motor of articulated jib (54), surpass or during predetermined limit value of less than, described arm is moved towards its detent position or towards its enable possition with the quantity of the fiber in convenient second vibration container.
14. equipment according to claim 13 is characterized in that, second container (59) is furnished with a frequency modulator, and changing its vibration and fiber supply thereof, the weighing device of the fiber number that described modulator can be supplied with by second container outlet is controlled.
15. equipment according to claim 8, it is characterized in that, this equipment is furnished with a CCU (U), described CCU and hopper (1,11,21,31), container (81) and the various volume or weight detector of measurer (D) and the water regulator (90) of mixing water feeder is connected, so that calculate and control supplies to the water yield (E) in the agitator (80) according to the quantity delivered of the quantity delivered of water content, every kind of pellet (D1 to D3) and/or solvent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0012913A FR2814979B1 (en) | 2000-10-10 | 2000-10-10 | PROCESS FOR THE CONTINUOUS MANUFACTURING OF A COMPOUND ROLLED CONCRETE REINFORCED WITH METAL FIBERS, AND CONTINUOUS PLANT FOR THE IMPLEMENTATION OF THIS PROCESS |
| FR00/12913 | 2000-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1474741A CN1474741A (en) | 2004-02-11 |
| CN1190302C true CN1190302C (en) | 2005-02-23 |
Family
ID=8855156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018189598A Expired - Fee Related CN1190302C (en) | 2000-10-10 | 2001-09-14 | Method for producing in continuous installation a compacted rolled concrete composition reinforced with fibres, and continuous installation therefor |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1324865B1 (en) |
| CN (1) | CN1190302C (en) |
| AT (1) | ATE296720T1 (en) |
| AU (1) | AU2001290020A1 (en) |
| DE (1) | DE60111250D1 (en) |
| FR (1) | FR2814979B1 (en) |
| HU (1) | HUP0303660A2 (en) |
| PL (1) | PL365564A1 (en) |
| SK (1) | SK4412003A3 (en) |
| WO (1) | WO2002030644A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7563017B1 (en) * | 2002-09-06 | 2009-07-21 | Bracegirdle Paul E | Process for mixing congealable materials such as cement, asphalt, and glue with fibers from waste carpet |
| US6971784B1 (en) * | 2002-09-06 | 2005-12-06 | Bracegirdle Paul E | Process for producing fiber reinforced hot-mix asphaltic and cementitous structural materials with fiber pellets produced from carpet waste |
| WO2007046738A1 (en) * | 2005-10-21 | 2007-04-26 | Incite Ab | Device an dmethod for dispensing fibres |
| DE102006057147B4 (en) * | 2006-12-01 | 2010-07-01 | Ift-Fasertechnik Gmbh & Co. Kg | Apparatus and method for dosing fibrous material |
| CN102179877B (en) * | 2011-03-02 | 2012-10-31 | 江苏华东机房集团有限公司 | Feeding device for plate pressing device |
| CN112140351A (en) * | 2020-09-23 | 2020-12-29 | 苏州港松建材有限公司 | Dry-mixed mortar production system |
| CN113355977B (en) * | 2021-06-15 | 2022-08-02 | 重庆广播电视大学重庆工商职业学院 | Mixing device and mixing method for fiber modified asphalt concrete |
| CN115478539B (en) * | 2022-08-09 | 2023-10-20 | 华北水利水电大学 | Device for spraying fiber concrete and construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT262126B (en) * | 1965-06-28 | 1968-05-27 | Ammann U Maschf Ag | Process for the batch production of fresh concrete and equipment for carrying out the process |
| NL173433C (en) * | 1973-04-16 | Bekaert Sa Nv | ||
| US4022439A (en) * | 1975-07-11 | 1977-05-10 | Caterpillar Tractor Co. | Fibrous concrete batch forming system |
| DK164265C (en) * | 1990-03-28 | 1992-11-02 | Skako As | METHOD OF DOSING FIBERS |
| JP4017047B2 (en) * | 1997-02-17 | 2007-12-05 | 小野田ケミコ株式会社 | Reinforcing fiber supply method |
-
2000
- 2000-10-10 FR FR0012913A patent/FR2814979B1/en not_active Expired - Fee Related
-
2001
- 2001-09-14 AU AU2001290020A patent/AU2001290020A1/en not_active Abandoned
- 2001-09-14 HU HU0303660A patent/HUP0303660A2/en unknown
- 2001-09-14 AT AT01969887T patent/ATE296720T1/en not_active IP Right Cessation
- 2001-09-14 PL PL01365564A patent/PL365564A1/en unknown
- 2001-09-14 CN CNB018189598A patent/CN1190302C/en not_active Expired - Fee Related
- 2001-09-14 DE DE60111250T patent/DE60111250D1/en not_active Expired - Lifetime
- 2001-09-14 SK SK441-2003A patent/SK4412003A3/en unknown
- 2001-09-14 WO PCT/FR2001/002857 patent/WO2002030644A1/en not_active Application Discontinuation
- 2001-09-14 EP EP01969887A patent/EP1324865B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60111250D1 (en) | 2005-07-07 |
| PL365564A1 (en) | 2005-01-10 |
| HUP0303660A2 (en) | 2004-01-28 |
| AU2001290020A1 (en) | 2002-04-22 |
| FR2814979A1 (en) | 2002-04-12 |
| FR2814979B1 (en) | 2003-02-28 |
| WO2002030644A1 (en) | 2002-04-18 |
| SK4412003A3 (en) | 2003-09-11 |
| EP1324865A1 (en) | 2003-07-09 |
| EP1324865B1 (en) | 2005-06-01 |
| CN1474741A (en) | 2004-02-11 |
| ATE296720T1 (en) | 2005-06-15 |
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