CN105865871A - Grinding forming method and device for simulating construction state of bituminous mixture standard sample - Google Patents
Grinding forming method and device for simulating construction state of bituminous mixture standard sample Download PDFInfo
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- CN105865871A CN105865871A CN201610274298.4A CN201610274298A CN105865871A CN 105865871 A CN105865871 A CN 105865871A CN 201610274298 A CN201610274298 A CN 201610274298A CN 105865871 A CN105865871 A CN 105865871A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The invention belongs to the technical field of simulating the working condition of the grinding construction forming of a bituminous pavement and specifically relates to a grinding forming method and device for simulating a construction state of a bituminous mixture standard sample. The grinding forming device for simulating the construction state of the bituminous mixture standard sample is characterized by comprising a mold plate, a grinding wheel, a grinding wheel pressure control device, a grinding wheel times control device, a mechanical driving control device and a detection device, wherein the grinding wheel is used for grinding a bituminous mixture; the grinding wheel pressure control device is used for supplying the pressure under the grinding wheel; the grinding wheel times control device is used for calculating the reciprocating times of the grinding wheel; the mechanical driving control device comprises a vibrating plate and a motor; the vibrating plate is arranged under the mold plate; and the motor is used for supplying the up-and-down vibrating power of the vibrating plate. The device can extremely simulate the grinding and kneading effects suffered by the mixture in the grinding and forming stage of the pavement, and can manufacture bituminous mixture standard samples meeting industry standards and local standards.
Description
Technical field
The invention belongs to simulate the technical field of bituminous paving roller compaction construction molding operating mode, specifically a kind of asphalt standard examination
Part construction simulation state roller-compaction method and apparatus.
Background technology
Along with the fast development of China's economy, high-grade road traffic composition there occurs great change, big flow, solid axle in recent years
Oneself becomes the prevailing traffic form of highway to carry traffic, also becomes control pavement structure and the key factor of design of material, at this
Under overall situation, the early damage phenomenon of bituminous paving is extremely serious, and investigation shows the early damage of China Higher level asphalt highway
Phenomenon is mainly rut, bellding, loose and Moisture Damage, and research related to this shows, for compound self, produces this
The main cause of a little early damage phenomenons is:
(1) rut: the bituminous paving common problem occurring Early Rutting to damage is that asphalt content is bigger than normal, and mixture density is inclined
Low.A large amount of statistical datas show, occur asphalt pavement core sample density on the wheel path of rut to be significantly higher than marshal piece density,
Show that asphalt densification again is the one of the main reasons forming rut under the effect of traffic load.
(2) bellding: the bellding phenomenon in earlier period damage occurs on wheel path, and in terms of test statistics result, bellding phenomenon is serious
Section, its surface layer bitumen content is bigger than normal.The section that rut occurs is often accompanied by bellding phenomenon, so, rut is with general
The origin cause of formation major part of oil is identical.
The loosest: under the comprehensive function of water and high speed traveling, the asphalt membrane bottom surface layer peels off from surface of aggregate, makes at the bottom of surface layer
Portion loses bonding between gathering materials and occurs loose, the loose referred to as loose phenomenon within this structure sheaf.With regard to compound itself,
Loose main cause is caused to be that voidage is excessive and Colophonium and cohesive force relative deficiency of gathering materials.
(4) Water Damage: cause the water route of entry of Water Damage mainly to pass through the asphalt surface course of structural integrity, and be stranded in bituminous sheaths
Among Ceng, causing asphalt membrane to come off from surface of aggregate under load and chemical action, Asphalt Mixture Design density is little, voidage
Greatly, and construction compaction is not etc. the main cause causing Water Damage, and the isolation additionally caused because of disproportionately graded also causes
The one of the main reasons of Water Damage.
In sum, for compound self, the main cause of current breaking of pitch surface in early stage can be summarized as asphalt content mistake
Greatly, mixture density is on the low side, compactness is low, on-spot interval rates is big and disproportionately graded etc..Construction management level is uneven no doubt
It is one of major reason producing these problems, but works as the bituminous paving of making under the different construction management levels in the whole nation and frequently occur same
During a kind of breakoff phenomenon, we would have to again examine from root whether general Asphalt Mixture Design method breaks with these closely
Bad phenomenon is relevant.Fact proved, current Asphalt Mixture Design method truly has a lot of aspect to need to improve.
(1) indoor molding mode does not mates with on-site rolling mode
It is known that laboratory test to be predicted accurately and efficiently and to control site operation quality, two most basic bars should be met
Part, first require specimen molding mode can construction simulation operating mode to greatest extent, make indoor achievement and surface layer practical application effect
There is comparability；Next requires that various Performance Evaluating Indexes reflects surface layer service quality under its service environment conscientiously.Nowadays on-the-spot big
Amount uses vibrated roller and rubber-tyred roller, and indoor molding mode uses marshall compaction method.Thus deriving one is
Row problem: marshall compaction density is the most suitable as the Con trolling index of Field Compactness；Compound is hitting reality and kneading action respectively
Its mechanical characteristic lower is the most different, then the test specimen made of which kind of molding mode, its control indexes quality in site is more effective；Use horse
Xie Er method carries out road under the conditions of the match ratio (including grating, bitumen aggregate ratio, density etc.) that desk research optimized is compacted at the scene and uses
Performance is the most optimum.
China's specification regulation Bitumen Mix Design uses Marshall mixing proportion design method.But in terms of specimen molding,
Compacting functions when Marshall method hammer number and pavement forming does not has internal relation, the impulsive force of Marshall hammer and vehicle car
There is greatest differences in wheel ground connection pressure, Marshall die trial to the constraints of asphalt also with the stress bar of actual ground surface material
Part is different, and Marshall's shock compaction method is unfavorable for the directional realignment gathered materials, therefore with the test specimen of marshall compaction mode molding
There is hidden danger in various control indexes quality in sites.
(2) it is difficult to design idea with volume parameter for Con trolling index and coordinates various contradiction
For continuous dense bitumen compound, specification regulation compactive effort is two-sided hitting real 75 times, and mainly (empty with volume parameter
Gap rate, clearance rate, saturation etc.) determine asphalt optimum content as Con trolling index.Add volume parameter if, with this experience to divide
Analysis method is as the means of Bitumen Mix Design, then its precondition set up is to be with porosity for calculating
The correlation test method of all volume parameters represented must science, rationally.Further, should exist between volume parameter and pavement performance
Good dependency.But the test method that on the one hand existing testing regulations specifies is difficult to make Volume Parameters of Asphalt Mixture result of calculation
Accurately (even if being the most accurately also impossible to), on the other hand, substantial amounts of research shows, volume parameter and Asphalt Mixture it
Between there is not dependency widely, say, that meet the road property that the asphalt of Marshall volume parameter may not have
Energy.
It addition, China's highway surfaces layer is used mostly Friction Surface, high temperature, antiskid must be taken into account with close as Friction Surface
Real, and Marshall method is difficult to balance the contradiction of these several respects.For reaching antiskid purpose, Asphalt Mixture of Anti-skidding Surface coarse aggregate
Content is higher, owing to using marshall compaction molding and compactive effort to fix, causes asphalt mixture density relatively low, i.e. mineral aggregate gap
Rate is relatively big, and necessarily needs bigger asphalt content for meeting volume parameter requirement (VV, VMA, VFA etc.), causes the Colophonium of design
The surface layer of compound making easily chases after the early damage phenomenons such as close generation rut and bellding under action of traffic loading, and result is likely
Any purpose is also not up to.
(3) compacting criteria is on the low side
Compactness reaches higher standard all to be had aobvious to asphalt high temperature rutting resistance, water resistant damage capability and anti-fatigue ability
Write and improve.Owing to marshall compaction molding mode does not mates with on-site rolling mode, the density causing compound is relatively low.Control with it
The density that system construction often results in road surface is less than normal, and voidage is too high, and the consequence thus caused is that compound is not fully compacted,
Quickly produce under action of traffic loading, owing to shearing strength is little and chases after close, rut occurs.Investigation inspection to bituminous paving shows,
After date during most of pavement usages one section, the density of compound can be more than original design density thus be inevitably generated densification car
Rut.
Properly increasing of degree of compaction standard has solid material base at present, compared with compacting construction machinery decades ago, nowadays
Construction compacting equipment in performance and compacting functions, have qualitative leap.And still continue to use the compactness control of marshal piece density at present
Standard processed, therefore it is reasonable that the compacting equipment increased substantially by performance should go out that compactness is higher, better quality by making
Asphalt surface course.But as indoor condition of molding is not added with changing, also continue to use Marshall method, road building machine now can only be caused to repair
Building out and bituminous paving the most very nearly the same, more seriously, laboratory test standard the most seriously hinders scientific and technological progress and production
Development so that contractor does not has enthusiasm to using new technology, new equipment
So far, it appears that got a glimpse of the access of the problem of solution.Firstly the need of seeking to be rolled into by simulation bituminous paving to greatest extent
The specimen molding equipment of type operating mode；Examination is set up in the understanding being based on the general the principles of science of discrete material this kind of to asphalt again
Internal relation between part condition of molding with road (public) asphalt for road main performance also forms the Colophonium of a kind of practicality and mixes
Material Optimal Mix Design method.
At present asphalt mixture mixing proportion design method can be divided into three kinds both at home and abroad: Marshall compaction method, SUPERPAVE rotate
Compacting and GTM rotational shear compacting.
Domestic mixing proportion design method achievement in research is mainly reflected in JTGF40-2004 to Marshall mixing proportion design method, standard
Revision.For continuous dense bitumen compound, specification gives the widest grading limit, can make designing unit and engineering
Construction unit selects engineering grading limit according to different categories of roads, different traffic, Different climate environment etc..Hitting real time
Under the conditions of several 75 times, the index such as centering light traffic and the voidage of Heavy Traffic, clearance rate, saturation is adjusted.Tighter
Define the computational methods etc. of volume parameter lattice.
Marshall method (Marshall tests) is to affect asphalt cooperation that is the most far-reaching, that be most widely used
Ratio method for designing, was once the general methods for designing in countries in the world.Marshall' mechanic characteristic value belongs to volumetric design, and it is
Just invention is to use in soil test to find maximal density and determine that the thought of optimum moisture content determines that Colophonium mixes by hitting solid yardage method
Asphalt optimum content in material.The indexs such as the density of compound, voidage, void in mineral aggregate are had clearly by marshall' mechanic characteristic value
Requirement.Achievement in research all shows the most both at home and abroad, and these indexs and pavement performance index have bigger gap.
(1) the mode of marshall compaction shaping test piece rolls operating mode with pavement construction and does not mates, and compound Sample density is on the low side.
(2) unreasonable as Con trolling index using VMA, VFA, VV equal-volume parameter, often make asphalt content higher, heavily handing over
It is easy under gating condition that the disease such as bellding, rut occurs.
Domestic Jiangsu Research Institute of Communication nineteen ninety-five introduces Superpave technology, and Superpave has been built in many provinces and cities and area
Experiment Road and entity project.But domestic current major part research work still rests in the similar research that repetition is abroad gone together, and
The most limited to its deeper research and development.
Superpave technology rises in the U.S., and the application to this technology is also deepening continuously with research.New project is
Among fermenting.As Bureau of Public Road FHWA and highway research center, Tener TFHRC combines the SIMAP research project carried out,
Normally the design thinking current also occupies sizable proportion with experimental index in method and parameter.As in Superpave side
Method uses gyratory compaction molding, is compared with specification by the bulk properties of shaping test piece, meeting the premise of code requirement
Under carry out corresponding simple shear SST and Indirect Tensile Tests, the result of the test obtained is applied to mechanics or semiempirical mechanics mould
Type, carries out pavement performance and estimates.Owing to method for designing about relevant informations such as grating, corner angle, texture and bulk properties being
Individually obtain from previous experience, and such resolving ideas experiment work amount is very big, and not necessarily can obtain
Effect.Therefore SIMAP solves the thinking of problem is the internal structure that mirror image technology is applied to analyze bitumen mixture specimen.
As a whole, SUPERPAVE method remains volume-designed method, is in place of the main difference of other method:
1. traffic levels is considered.
2. with gyratory compaction mode shaping test piece, and compacting functions becomes because of traffic levels, temperature.
3. bituminous cements is chosen with performance indications.
4. using voidage as test specimen or even the controlling indicator of asphalt mixture design.
5. mineral aggregate gradation is proposed " control point " and the concept of " forbidden zone ".
By deeply comparing it can be seen that:
(1) SUPERPAVE is to grading curve " control point " and the regulation of " forbidden zone ", the most perfect theoretical foundation and experience
Foundation, the grating in its scope of design that falls might not be exactly that pavement performance is best, can not get rid of beyond grating regulation model
The grating enclosed must be just that pavement performance is poor.
(2) compared with the forming method of GTM, it is when shaping test piece, has only carried out the calculating of volume parameter, has not carried out mechanics
The measurement of index and reckoning, the premise of SUPERPAVE forming method is that the voidage of test specimen is closely related with pavement performance, before this
Carry whether completely correctly draw a conclusion now the most premature.SUPERPAVE thinks that shaping test piece is to space during use latter stage of material
Rate should be more than 2%, from the point of view of the molding of GTM is put into practice, it is more likely that the voidage of compound just had occurred and that before reaching 2%
Plastic failure, when asphalt content is bigger especially true.Therefore have and more greatly may be used time with the asphalt of SUPERPAVE design
Early Rutting disease (the asphalt that US West's circuit [West Track] field experiment is designed by SUPERPAVE can occur
The Early Rutting that the road surface built occurs also demonstrate that this worry is not unnecessary).Additionally divide from the intensity mechanism of asphalt
Analysis understands, and voidage is not the endogenous cause of ill that compound destroys less than 2%, and real reason is that compound comprehensive strength is too small.
(3) in SUPERPAVE method, can the model of mixture performance test truly reflect that road situation still needs to research and investigates.
(4) though Design Air Voids (4%) and minimum void in mineral aggregate to test specimen make strict rules, but do not consider fundamental test
Precision or the credibility impact on voidage, determine that the method for theoretical maximum density is unreasonable, cause the volume calculating test specimen
Parameter is insincere.
GTM (Gyratory Testing Machine) rotary test rig is American Engineering formation (U.S.Army Corps of
Engineers) the ground surface material testing machine first invented with the method for reasoning in the sixties, USAF was for solving heavy type later
The problem that bomber runway is easily damaged, GTM is researched and developed by special establishment officer again, defines for airfield pavement
Asphalt Mixture Design method.
GTM is merged into compound molding compact test machine, mechanics shearing experiment machine and vehicle simulation machine for an experimental machine,
Once specimen molding is complete, i.e. can get design density and the asphalt content of compound, so GTM has, the design cycle is short, set
Count lower-cost feature.GTM have employed the inference method relevant with stress and carries out mechanical analysis and the design of compound, overcomes
The deficiency of the empirical methods such as Marshall.GTM method can be simulated the force-bearing situation of actual ground surface material more truly and measure and monitor the growth of standing timber in advance
Expect the strain mechanical property of viability Mo, thus avoid the early damage on road surface.The principle maximum limit of GTM shaping test piece
Rolling suffered by degree simulation road surface roller-compaction stage compound, rubbing effect, the tire that also can be born according to road surface
Ground connection pressure set pressure at right angle, it is also possible to test specimen is rubbed the anglec of rotation by change.
But this equipment belongs to imported product, cost is the highest, and frame for movement is considerably complicated, maintenance inconvenience, the most very
Difficulty is promoted the use of.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, it is provided that a kind of asphalt standard specimen construction simulation state roller-compaction method
And equipment, this equipment can rolling suffered by simulated roadway roller-compaction stage compound, rubbing effect, system to greatest extent
Make the asphalt standard specimen meeting industry standard, provincial standard.
The concrete technology path of the present invention is:
A kind of asphalt standard specimen construction simulation state roller-compaction method, it is characterised in that said method comprising the steps of:
Stone, puts into moulding box by asphalt, constitutes standard specimen；
Rolling, rolling wheel carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects.
Optimally, said method comprising the steps of:
Stone, takes out the moulding box of preheating from baking oven, is disposably loaded in moulding box by the whole asphalts being stirred, and uses
The compaction hammer of preheating is turn-taked in loading moulding box by Bian Zhizhong,
Rolling, the rolling wheel after preheating carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects, and the test specimen after compacting is cooled to demoulding detection after room temperature.
Further, said method comprising the steps of:
Stone: by preheating moulding box takes out from baking oven, moulding box bottom surface and side paving one common paper cut out, make bottom surface and
Side is all isolated by paper；Disposably being loaded in moulding box by the whole asphalts being stirred, middle part is slightly above surrounding, with preheating
Compaction hammer by Bian Zhizhong turn-take compacting one time, flatten into convex arch.When temperature reaches the compacting temperature of regulatory requirements,
Surface one common paper cut out of paving, puts into moulding box on vibrating disk.
Roll: the rolling wheel after preheating carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects, and the test specimen after compacting is cooled to demoulding detection after room temperature.
A kind of asphalt standard specimen construction simulation state roller-compaction equipment, it is characterised in that described equipment include a mould,
One rolling wheel by rolled asphalt compound, one provide the rolling wheel pressure control device of rolling wheel downforce, based on one
Calculate the rolling wheel time number control device of rolling wheel reciprocal time, a mechanical transmission control device and a detection device；Described machine
Tool actuating device comprises a vibrating disk being located at below mould, and provides the motor of vibrating disk up-down vibration power.
Optimally, described rolling wheel pressure control device comprises one for the hydraulic package providing rolling wheel downforce, Yi Jiyi
The threephase asynchronous of individual control rolling wheel horizontal reciprocating movement.
Optimally, described rolling wheel time number control device comprises the photoemitter being located at mould edge, and an enumerator.
Optimally, described detection device comprises density sensor and temperature sensor.
Further, described rolling wheel time number control device comprises a pressure transducer being connected with hydraulic cylinder.
Further, described threephase asynchronous drives reductor motion, and rotating disk is driven by the chain wheel assembly on reductor
Rolling wheel realizes moving back and forth.
Optimally, described hydraulic package includes a pressure expansion link, one with the oil cylinder of pressure expansion link apical grafting, oil cylinder top arranges travel switch,
Oil cylinder connected pipes, comprises a check valve of series connection, overflow valve group and a reversal valve in oil pipe, described overflow valve group comprises two in parallel overflowing
Stream valve.
Accompanying drawing explanation
Fig. 1 is asphalt roller compaction process schematic diagram.
Fig. 2 is asphalt Stress control schematic diagram.
Fig. 3 is rolling wheel dynamic Control schematic diagram.
Fig. 4 is asphalt standard specimen roller-compaction equipment and technology route map of the present invention.
Fig. 5 is threephase asynchronous machine wiring diagram of the present invention.
Fig. 6 is the schematic diagram of the digital photoelectric counter of the present invention.
Wherein,
1, rolling wheel
2, moulding box
3, vibrating disk
4, pressure expansion link
5, check valve
6, travel switch
7, overflow valve A
8, overflow valve B
9, oil cylinder
10, reversal valve
11, reductor
12, the first motor
13, rotating disk
14, chain wheel assembly.
Detailed description of the invention
Asphalt standard specimen roller-compaction equipment, simulates suffered by road surface roller-compaction stage compound to greatest extent
Roll, rubbing effect, the tire ground connection pressure set pressure at right angle also can born according to road surface, it is also possible to change to test specimen
Rub the anglec of rotation, simultaneously take account of existing technical standard, the lower surface of moulding box adds that frequency of vibration is variable, shakes
Adjustable vibrating disk.Such as Fig. 1, the center of test specimen upper surface is higher than surrounding 2-5cm, and rolling wheel 1 is in the effect of pressure F
Under move horizontally, it is achieved roll action.In moulding box 2, asphalt is under vibrating disk 3 acts on, by shaking the most constantly
Dynamic, now moulding box 2 does not has horizontal movement, the direct rolled asphalt compound of rolling wheel 1, will not collide moulding box 2 edge, more
Meet the roller compaction process in road construction.
For the control of rolling wheel 1 pressure, mainly use high-performance, high-precision pressure sensor, by hydraulic system to rolling
Wheel applies the pressure of vertical direction, and this pressure can be manually entered force value by display screen.Such as Fig. 2, former for this hydraulic system
Reason figure.Pressure expansion link 4 is connected with oil cylinder 9, and oil cylinder 9 is controlled to open and close by travel switch 6, wherein, and oil cylinder 9 and oil circuit
System is connected.Oil piping system includes the check valve 5 being connected with oil cylinder 9 top, and check valve 5 one end connects one group of overflow in parallel
Valve (overflow valve A 7 and overflow valve B 8), the other end of overflow valve A 7 and overflow valve B 8 is connected with reversal valve 10.Reversal valve
The end of 10 connects bottom oil cylinder 9.The head of check valve 5 and the afterbody of reversal valve 10 are simultaneously connected with an empty adapter.
Control reciprocating for rolling wheel, mainly uses threephase asynchronous, accurately controls rolling wheel so that it is
Realize asphalt test piece is back and forth rolled motion, and at the edge of grinding tool equipped with stopping means, it is to avoid rolling wheel is rolled by mould
Edge.Such as Fig. 3, for rolling wheel dynamic Control schematic diagram, the first motor 12 drives reductor 11 to move, and rotating disk 13 passes through chain
Wheel assembly 14 drives rolling wheel 1 to realize moving back and forth.The technology path of the present invention is as shown in Figure 4.
Key technology in the present invention includes: rolling wheel control pressurer system, rolling wheel rolling layer control system, machine driving
Several aspects such as the design of system and the detecting system of test specimen relevant parameter.
(1) rolling wheel control pressurer system
By controlling the positive and negative upper and lower displacement transferring control hydraulic cylinder of threephase asynchronous, thus rolling wheel is applied corresponding
Pressure, according to hydraulic cylinder displacement size and pressure transducer, the size of pressure can show that pressure determines.Threephase asynchronous machine connects
Line chart is as shown in Figure 5.
(2) rolling wheel rolling layer control system
When rolling wheel back and forth rolls test specimen on moulding box, in the edge of mould equipped with electrooptical device, as long as rolling wheel moves to
Two ends extreme position will shelter from photoemitter, and this hour counter will add 1, and shows reciprocating over the display
Number of times, and reciprocating number of times it is also assumed that prior setting.Rolling layer has the biggest with the density of asphalt test piece
Dependency, so must be accurately controlled rolling layer.The track that vehicle runs can be described by the angle of pitch of vehicle.
As shown in Figure 6, for controlling the schematic diagram of the digital photoelectric counter of rolling wheel number of times.
The present invention can improve pavement structure thing durability；By the asphalt standard highly consistent with actual compacting equipment is tried
The application of part roller-compaction equipment, can increase substantially durability of asphalt pavement, reduces and safeguards and reconstruction expenses；Reduce Colophonium
Utilization rate Deng material；By rationally improving compacted density, the usage amount to the high price material such as Colophonium, fiber can be reduced,
Directly reduce construction costs, remarkable in economical benefits.
Table one technical advantage contrast table
| Vibrating wheels milling process | Marshall compaction method | Wheel milling process | Gyratory compaction method | |
| Feature | Vibrating compacting | Shock compaction | Static pressure is compacted | Rubbing compacting |
| Conditions Matching | Coupling | Do not mate | Do not mate | Coupling |
| The suitability | Various materials | Hard building stones are not suitable with | Various materials | Various materials |
| Operation conveniency | Easily | Easily | Easily | Easily |
| Cost | Moderate | Low | Moderate | High |
In the present invention, on-site rolling road roller should follow the requirement of " high frequency, by a narrow margin ", in conjunction with the various road roller of current onsite application
Actual parameter situation, molding machine design frequency is at 0-60 hertz, and amplitude is between 0-1 millimeter.Set according to scene time actually used
Outfit situation, adjusts forming machine corresponding frequencies, amplitude.
Claims (10)
1. an asphalt standard specimen construction simulation state roller-compaction method, it is characterised in that said method comprising the steps of:
Stone, puts into moulding box by asphalt, constitutes standard specimen；
Rolling, rolling wheel carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects.
Asphalt standard specimen construction simulation state roller-compaction method the most according to claim 1, it is characterised in that described method
Comprise the following steps:
Stone, takes out the moulding box of preheating from baking oven, is disposably loaded in moulding box by the whole asphalts being stirred, and uses
The compaction hammer of preheating is turn-taked in loading moulding box by Bian Zhizhong,
Rolling, the rolling wheel after preheating carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects, and the test specimen after compacting is cooled to demoulding detection after room temperature.
Asphalt standard specimen construction simulation state roller-compaction method the most according to claim 2, it is characterised in that described method
Comprise the following steps:
Stone: by preheating moulding box takes out from baking oven, moulding box bottom surface and side paving one common paper cut out, make bottom surface and
Side is all isolated by paper；Disposably being loaded in moulding box by the whole asphalts being stirred, middle part is slightly above surrounding, with preheating
Compaction hammer by Bian Zhizhong turn-take compacting one time, flatten into convex arch, when temperature reaches the compacting temperature of regulatory requirements,
Surface one common paper cut out of paving, puts into moulding box on vibrating disk；
Roll: the rolling wheel after preheating carries out horizontal reciprocating movement, simultaneously moulding box up-down vibration under conditions of standing downforce；
The demoulding detects, and the test specimen after compacting is cooled to demoulding detection after room temperature.
4. an asphalt standard specimen construction simulation state roller-compaction equipment, it is characterised in that described equipment include a mould,
One rolling wheel by rolled asphalt compound, one provide the rolling wheel pressure control device of rolling wheel downforce, based on one
Calculate the rolling wheel time number control device of rolling wheel reciprocal time, a mechanical transmission control device and a detection device；Described machine
Tool actuating device comprises a vibrating disk being located at below mould, and provides the motor of vibrating disk up-down vibration power.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 4, it is characterised in that described stone roller
Pinch roller pressure control device comprise one for the hydraulic package providing rolling wheel downforce, and one control rolling wheel level past
The threephase asynchronous of multiple motion.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 4, it is characterised in that described stone roller
Pinch roller time number control device comprises the photoemitter being located at mould edge, and an enumerator.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 4, it is characterised in that described inspection
Survey device and comprise density sensor and temperature sensor.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 4, it is characterised in that described stone roller
Pinch roller time number control device comprises a pressure transducer being connected with hydraulic cylinder.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 5, it is characterised in that described three
Phase asynchronous motor drives reductor motion, and rotating disk drives rolling wheel to realize moving back and forth by the chain wheel assembly on reductor.
Asphalt standard specimen construction simulation state roller-compaction equipment the most according to claim 5, it is characterised in that described
Hydraulic package includes a pressure expansion link, and one arranges travel switch with the oil cylinder of pressure expansion link apical grafting, oil cylinder top, oil cylinder connected pipes,
Comprising a check valve of series connection, overflow valve group and a reversal valve in oil pipe, described overflow valve group comprises two overflow valves in parallel.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036867A (en) * | 2017-05-24 | 2017-08-11 | 扬州大学 | The gyratory compaction molding method of the Double-layer asphalt compound test specimen of different voidages |
| CN108732085A (en) * | 2017-04-20 | 2018-11-02 | 交通运输部公路科学研究所 | A kind of asphalt disperses detecting system |
| CN110286068A (en) * | 2019-04-03 | 2019-09-27 | 东南大学 | The 2D analogue experiment method of soil particle mobility status in a kind of vibrating compaction process |
| CN112139688A (en) * | 2020-09-28 | 2020-12-29 | 哈尔滨工业大学（威海） | Metal plastic laser welding is along with welding system that rolls |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679667Y (en) * | 2004-02-20 | 2005-02-16 | 华南理工大学 | Mixed asphalt material wheel rolling compacting machine able to prepare specimen at different height |
| CN202330115U (en) * | 2011-11-23 | 2012-07-11 | 中铁三局集团有限公司 | Bituminous mixture compacting forming machine |
| CN202631352U (en) * | 2012-06-08 | 2012-12-26 | 金陵科技学院 | Multifunctional bituminous mixture track contrast test mold |
| CN202710371U (en) * | 2012-07-19 | 2013-01-30 | 河北省交通规划设计院 | Mobile bituminous mixture molding machine |
| CN102944488A (en) * | 2012-11-19 | 2013-02-27 | 长安大学 | Method for testing rut resistance of multi-layered combined structure mixtures of bituminous pavements |
| CN103134712A (en) * | 2013-02-06 | 2013-06-05 | 长安大学 | Vertical vibrating forming method applicable to bituminous mixture test piece with aggregate nominal maximum particle size less than 26.5mm |
| CN204422301U (en) * | 2015-02-11 | 2015-06-24 | 长安大学 | A kind of rut sample forming machine |
| CN204536074U (en) * | 2015-04-03 | 2015-08-05 | 长安大学 | A kind of ingot stripper and die trial thereof |
| CN205879623U (en) * | 2016-04-28 | 2017-01-11 | 浙江省交通工程建设集团有限公司 | Bituminous mixture standard simulation construction attitude rolling molding equipment |
-
2016
- 2016-04-28 CN CN201610274298.4A patent/CN105865871A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679667Y (en) * | 2004-02-20 | 2005-02-16 | 华南理工大学 | Mixed asphalt material wheel rolling compacting machine able to prepare specimen at different height |
| CN202330115U (en) * | 2011-11-23 | 2012-07-11 | 中铁三局集团有限公司 | Bituminous mixture compacting forming machine |
| CN202631352U (en) * | 2012-06-08 | 2012-12-26 | 金陵科技学院 | Multifunctional bituminous mixture track contrast test mold |
| CN202710371U (en) * | 2012-07-19 | 2013-01-30 | 河北省交通规划设计院 | Mobile bituminous mixture molding machine |
| CN102944488A (en) * | 2012-11-19 | 2013-02-27 | 长安大学 | Method for testing rut resistance of multi-layered combined structure mixtures of bituminous pavements |
| CN103134712A (en) * | 2013-02-06 | 2013-06-05 | 长安大学 | Vertical vibrating forming method applicable to bituminous mixture test piece with aggregate nominal maximum particle size less than 26.5mm |
| CN204422301U (en) * | 2015-02-11 | 2015-06-24 | 长安大学 | A kind of rut sample forming machine |
| CN204536074U (en) * | 2015-04-03 | 2015-08-05 | 长安大学 | A kind of ingot stripper and die trial thereof |
| CN205879623U (en) * | 2016-04-28 | 2017-01-11 | 浙江省交通工程建设集团有限公司 | Bituminous mixture standard simulation construction attitude rolling molding equipment |
Non-Patent Citations (1)
| Title |
|---|
| 骆岩飞: "无机结合料稳定材料碾压振动成型试验方法研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732085A (en) * | 2017-04-20 | 2018-11-02 | 交通运输部公路科学研究所 | A kind of asphalt disperses detecting system |
| CN107036867A (en) * | 2017-05-24 | 2017-08-11 | 扬州大学 | The gyratory compaction molding method of the Double-layer asphalt compound test specimen of different voidages |
| CN110286068A (en) * | 2019-04-03 | 2019-09-27 | 东南大学 | The 2D analogue experiment method of soil particle mobility status in a kind of vibrating compaction process |
| CN110286068B (en) * | 2019-04-03 | 2021-09-21 | 东南大学 | 2D simulation experiment method for soil particle flowing condition in vibration compaction process |
| CN112139688A (en) * | 2020-09-28 | 2020-12-29 | 哈尔滨工业大学（威海） | Metal plastic laser welding is along with welding system that rolls |
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