CN1687775A - Scouring simulation test equipment and method for base course of cracked asphalt pavement from dynamic hydraulic pressure - Google Patents
Scouring simulation test equipment and method for base course of cracked asphalt pavement from dynamic hydraulic pressure Download PDFInfo
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- CN1687775A CN1687775A CN 200510042605 CN200510042605A CN1687775A CN 1687775 A CN1687775 A CN 1687775A CN 200510042605 CN200510042605 CN 200510042605 CN 200510042605 A CN200510042605 A CN 200510042605A CN 1687775 A CN1687775 A CN 1687775A
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Abstract
This invention refers to a testing device which simulates the flowing pressure flushing the cracked asphalt pavement base. The device includes the mechanical system, data collecting system and the variable-frequency power source driving machine. The data collecting system includes the amplifier, data collector and the computer, while the mechanical system is made up of electric motor, continuous belt and the camshaft. The photoelectricity sensor is fixed beside the camshaft and on the camshaft there is the eccentric wheel, with which are linked the spring system, force sensor and the sample silo through the bar. The data collecting system will record and display the pressure and its active times. Add the load to the standard times, and it will evaluate the material's ability of anti-degradation through the mass loss. Through this device and its method we will get the relation between different flowing pressure, active times and base material's flushed quantity and the pump suction each time. The experiment's result is stable and believable. Meanwhile the results of different materials can be well compared, so it can be used to evaluated the ability of anti-degradation of half inflexibility road face base material.
Description
Technical field
The present invention relates to pavement material Performance Detection technical field, be specifically related at the mensuration of cracking seam Semi-rigid Base Course for Asphalt Pavement erosion resistibility and the simulation test device and the method for evaluation.
Background technology
As far back as nineteen fifties, just there is report in some countries such as the U.S., and the pump-absorb action that is produced under the effect of driving can cause the purt mud phenomenon of roadbase, then because purt mud makes pavement destruction.But carrying out the research of base material scour resistance really is to start from the eighties, and corresponding both at home and abroad report is very few.Mainly contain France and Australian two countries at present scouring test methods was had report.In France, the researchist utilizes rotating brush or shaking table to do the indoor performance of flushing test of base material.Australian researchist also carries out washout test with shaking table, and test unit is basic identical with France, just the regulation difference of test conditions such as sample dimensions, vibration frequency.
Rotating brush test is to rely on the wire brush that is rotating that the polish-brush effect is carried out on the surface of test specimen, and by different test specimens by the power of how much weighing their erosion resistibilities of the material granule weight under the wire brush brush.This test method perhaps is similar to the mechanical wear phenomenon to washing away of basic unit to a certain extent and simulates in the process, but does not relate to water in whole test, washes away mechanism so this method can not simulated roadway, exists limitation.Thereby erosion resistibility and the actual state of estimating semi-rigid sub-base material with this test method differ greatly.
Compare with the rotating brush test, doing the base material washout test with shaking table has had very big improvement on principle.It has considered that in process of the test water is to the erosion of test specimen and top course " pump-absorb action " to full water-base end face under the effect of traffic load.But the major defect of this test unit is that it can not provide identical test condition for different test specimens.From the surface, the frequency of shaking table is certain in process of the test, and the test specimen on the shaking table in the steel drum and the frequency of shaking table should be consistent.But in fact the size of the suffered acting force of test specimen and frequency all in very large range change, and almost are irregular.The mode of vibration can not well be simulated the actual situation of washing away of base material, and " moving water " in this case and " the moving water " in the slit differ greatly.
Though these countries inorganic erosion resistibility in conjunction with pellet punishment material that begins one's study early is not generally speaking because which kind of shop experiment method test method and test unit have to connect each other with the actual conditions of real road so far.And they more be research cement punishment class material, less relatively to the research that China's two ashes commonly used are stablized semi-rigid materials such as class, lime stabilization class.
In view of the above problems, in " the highway road surface construction technique normalizing " of 1985 year traffics cloth promulgated by the ministries or commissions of the Central Government, the erosion resistibility of base material is considered to some extent.But, very lack the support of correlative study achievement.This wherein sets up as yet with the scour resistance test method of semi-rigid sub-base material and this precondition of index and has some relations.
2000, professor Sha Aimin of Chang An University proposed new test unit and test method of can simulated roadway basic unit being washed away situation in practice.This test unit relies on the MTS platform to adopt top-down load mode, in the process of washing away, test findings is brought influence for fear of test specimen because of test specimen collides the mass loss that brings, test specimen is fixed, be placed on an energy with test specimen fixing can link to each other with the MTS base again simultaneously be filled with water wash away in the bucket.In the process of the test, when the downward effect of MTS pressure head loads the test specimen end face, thin mud between pressure head bottom surface and the test specimen end face is extruded fast, on this situation simulation wheel load effect and the road surface, and the situation that the thin mud between surface layer bottom surface and basic unit's end face is extruded; When MTS pressure head fast rise, between the end face of pressure head bottom surface and test specimen, form negative pressure; This negative pressure can be with water promptly between intake head bottom surface and the test specimen end face; Also can produce " pump-absorb action " simultaneously to the test specimen end face; Impacting the fine grained that gets off when soon the particulate sucking-off in the test specimen end face microstructure also will load takes up; When the simulation of this situation is washed away after the wheel warp, the situation of washing away during the top course resilience.But blemish in an otherwise perfect thing is to fail to consider the influence in crack, and simultaneously pressure head directly acts on the test specimen surface, causes coming off of test specimen surface larger particles, also with reality in load be that the situation that acting surface laminar surface and fine aggregate are extruded or are sucked out is not inconsistent.The possibility of existence is arranged negative pressuren zone in theory but the effect of pull of vacuum is obvious not to the utmost.
The actual scouring state of simulated roadway basic unit though the performance of flushing test unit is tried one's best, Anti brushing Performance of Semi rigid Base Course test method possess self integrality and with the harmony and the matching of other correlation test method.But: 1, MTS belongs to the macrotype platform test apparatus, does washout test with it and is difficult for promoting, and is necessary to design more easy antiscour test unit.2, because the characteristics of asphalt pavement crack, semi-rigid type base washes away in the asphalt pavement structure following several form: the crack of (1) asphalt mat is owing to surface layer self low-temperature embrittleness causes, cement stabilized type basic unit does not have the crack corresponding with it under top-crack.Wash away in this case and mainly occur between surface layer bottom surface and the basic unit's end face.(2) crack of bituminous pavement top is the reflection crack that basic unit causes, the basic unit that this situation causes washes away more serious.Because this moment, water not only can be invaded between surface layer and the basic unit's interface, but also can enter on the interface of basic unit and subbase along the crack.When washing away when serious, subbase also can wash away, and thin mud equally also can be extruded top course.(3) top course has many microfractures, after moisture is infiltrated by the surface layer microfracture, place in the substrate surface part is gathered, at the infiltration initial stage, moisture is absorbed by basic unit, it is saturated gradually to be accompanied by basic unit, the elastic modulus of local basic unit also reduces simultaneously, under the driving load action, this part more is prone to coming to nothing between surface layer and the basic unit than other place, when coming to nothing and moisture accumulation when acquiring a certain degree, has just begun souring, because top course does not have obvious crack, so can't see purt mud phenomenon on the road surface, but the souring of this basic unit can cause the local cracking of top course soon, the road surface occurs low-lying then, the hole, hole, though and this test unit has also been simulated flush chamber, and the actual crack of road surface erosion damage of causing greatly differs from each other.
Also do not have now can the realistic simulation flowing pressure to the test method and the device of band crack bituminous pavement semi-rigid type base souring.
Summary of the invention
The objective of the invention is in order to overcome disadvantages of background technology, and provide a kind of can the realistic simulation bituminous pavement crack appears and after, flowing pressure that produces under the vehicular load effect and vehicle sail out of the simulation test device and the test method of the pump suction road pavement semi-rigid type base souring of instant generation, with relation and the each pump suction that produces of measuring different flowing pressures, effect number of times and base material erosion quantity, be used to analyze, compare and estimate the erosion resistibility of semi-rigid pavement base material.
The object of the present invention is achieved like this: a kind of moving hydraulic pressure is to cracking bituminous pavement basic unit scouring simulation test device, comprise mechanical system, data acquisition system (DAS) and variable-frequency power sources driver, data acquisition system (DAS) comprises amplifier, data acquisition unit and computing machine, it is characterized in that: described mechanical system comprises motor 1, driving belt 2 and camshaft 3, photoelectric sensor 24 is installed in camshaft 3 next doors, camshaft 3 is provided with rolling bearing 5, inertial flywheel 20 and eccentric wheel 4, eccentric wheel 4 is by rolling bearing 19 and bar 6 and be located at spring 7 and the bars 10 of tube in 8 and be linked in sequence, back-moving spring 9 is enclosed within on the bar 10, be connected with force transducer 11 between bar 10 and the bar 12, the lower end of bar 12 connects pressing plate 13, the upper end of adjusting screw(rod) 17 is provided with pallet 23, its lower end is provided with set nut 18, test specimen tube 15 is installed on the pallet 23, the rubber mat plate 14 that is used for simulating bituminous pavement is housed in the test specimen tube 15.
A kind of moving hydraulic pressure is to cracking bituminous pavement basic unit scouring simulation test method, it is characterized in that: insert the semi-rigid pavement basic unit test specimen 16 full water in certain length of time in the test specimen tube 15 after one day, on put rubber mat plate 14 and fixed with sleeve, inject water 21 to certain height 50mm, utilize frequency converter that the frequency 0-20Hz of loading is set; Adjust the size of load application by the height of regulating test specimen tube 15 bases, motor 1 running, pressing plate 13 road pavement basic unit test specimens 16 are exerted pressure, simultaneously, force transducer 11 sends force signal to data acquisition unit after amplifier amplifies, photoelectric sensor 24 will load the number of times signal and send data acquisition unit to, and data acquisition system (DAS) will write down and show the pressure size and apply number of times, imposed load is to stipulated number, by the erosion resistibility of mass loss evaluating material.
The present invention compared with prior art has the following advantages: the present invention can simulate the actual conditions of flowing pressure to cracking bituminous pavement basic unit souring well, can measure the relation of different flowing pressures, effect number of times and base material erosion quantity by the present invention; Test findings is reliable and stable, different base material test findings comparabilities are strong, can be used to estimate the erosion resistibility of semi-rigid pavement base material, the present invention can measure the pump suction that is produced under the different flowing pressures, has overcome the not situation of energy measurement pump suction of other testing machine.The advantage of test unit of the present invention: (1) is economical and practical, and is easy and simple to handle, and volume is light and handy, is convenient to promote; (2) the actual scouring state of energy simulated roadway basic unit, show as load size and load action frequency adjustable, the space (flush chamber) of washing away formation with water in the slit, the rubber blanket of special pre-joint-cutting simulation surface layer cracking back and basic unit, the simulating vehicle load action is in the sub-surface situation simultaneously, avoid pressure head to act on the test specimen surface and cause aggregate to come off, the rubber blanket of pre-joint-cutting can be simulated three kinds of crack forms that cause the road surface erosion damage: the length width and the shape in warm draw seam, reflection crack and microfracture and crack; (3) wash away instrument with other and compare, simulated the flowing pressure and the pump suction in " in the slit " well, and can measure flowing pressure and pump suction.
Description of drawings
Fig. 1 is a mechanical system structure synoptic diagram of the present invention.
Fig. 2 is briquetting one-way valve structures synoptic diagram in the mechanical system of the present invention.
Fig. 3 is a data acquisition system (DAS) structured flowchart of the present invention.
Fig. 4 is a loading of the present invention change curve in time.
The tool present embodiment
As Fig. 1, Fig. 2 and a kind of moving hydraulic pressure shown in Figure 3 are to cracking bituminous pavement basic unit scouring simulation test device, comprise mechanical system, data acquisition system (DAS) and variable-frequency power sources driver, data acquisition system (DAS) comprises amplifier, data acquisition unit and computing machine, it mainly acts on is that record shows magnitude of load, the effect number of times of load and record analysis loading curve, the variable-frequency power sources driver adopts 1.5KW alternating current motor driver VFD015A21A type, described mechanical system comprises motor 1, driving belt 2 and camshaft 3, photoelectric sensor 24 is installed in camshaft 3 next doors, camshaft 3 is provided with rolling bearing 5, inertial flywheel 20 and eccentric wheel 4, eccentric wheel 4 is by rolling bearing 19 and bar 6 and be located at spring 7 and the bars 10 of tube in 8 and be linked in sequence, back-moving spring 9 is enclosed within on the bar 10, be connected with force transducer 11 between bar 10 and the bar 12, the lower end of bar 12 connects pressing plate 13, the upper end of adjusting screw(rod) 17 is provided with pallet 23, its lower end is provided with set nut 18, test specimen tube 15 is installed on the pallet 23, sub-surface test specimen 16 is housed in the test specimen tube 15, be used for simulating the rubber mat plate 14 and the water 21 that is positioned at rubber mat plate 14 tops of bituminous pavement.In addition, described rubber mat plate 14 is the round rubber plate of elastic modulus E=100～150, and its diameter is 150mm, and thickness is 25～30mm, and open wide a 2～5mm of being in the middle of the rubber slab, length is the strip slit 22 of 50～60mm; In order to measure the pump suction that pressing plate 13 and rubber mat plate 14 slits 22 produce, retaining valve is installed at center at pressing plate 13 and bar 12, pressing plate 13 disappears with the pump suction in rubber mat plate slit 22 when retaining valve is worked, and pressing plate 13 produces pump suction with rubber mat plate slit 22 when retaining valve is not worked.As shown in Figure 2, the retaining valve that is installed in pressing plate 13 and bar 12 centers comprises the hollow nut 25 that is installed in pressing plate 13 bottom centre, is installed in spring 26 intracardiac in pressing plate 13 and the bar 12 and is installed in the steel ball 27 at spring 26 tops.Fig. 4 has tested the trial curve that pump suction and no pump suction are arranged.
The design of spring system is the key component of whole mechanical system design.The effect of transmission power is played in the effect of spring 7 on the one hand, play the effect of extension rod on the other hand, wash away hollow hole, hole, hole when sub-surface test specimen 16 end faces produce, spring 7 guarantees that bar 10 is downward, pressing plate 13 can be contacted with rubber mat plate 14 end faces all the time, and warranty test power does not change.After the design of returning spring 9 will guarantee that eccentric wheel 4 leaves minimum point, must overcome the gravity of pressing plate 13, bar 12, force transducer 11, bar 10, spring 7, bar 6 and rolling bearing 19 and the pump suction of pressing plate 13 and 22 generations of rubber mat plate slit, make rolling bearing 19 be pressed in eccentric wheel 13 surfaces all the time, do not produce and beat.
The principle of work of test unit mechanical system of the present invention: before the experiment test specimen tube 15 is put in ready made semi-rigid pavement basic unit test specimen 16 (φ 150 * 200), with the round rubber backing plate 14 simulation bituminous pavements of elastic modulus E=100～150.Rubber mat plate 14 diameters are 150mm, and thickness is 25～30mm, and open wide a 2～5mm in the middle of rubber mat plate 14, the strip of long 50～60mm or the slit 22 of other shape.Rubber mat plate 14 is placed on sub-surface test specimen 16 end faces, test specimen tube 15 is sealed, and add entry 21 at an upper portion thereof.Test specimen tube 15 is placed on the pallet 23 of adjusting screw(rod) 17 and positions, rotatory inertia flywheel 20 makes eccentric 4 off-centre (offset 30MM) be in minimum point and positions, at this moment screw rod 17 is adjusted in rotation moves up test specimen tube 15 contact with pressing plate 13 also road pavement basic unit test specimen 16 exert pressure, the big I of pressure is measured by force transducer 11, pressure is applied to the test pressure that needs, set nut 18 locking adjusting screw(rod)s 17, remove the register pin on the inertial flywheel 20, make eccentric wheel 4 freedom.By variable frequency drives actuating motor 1, motor 1 drives camshaft 3 rotations by driving belt 2, and the pressure of eccentric wheel 4 passes to sub-surface test specimen 16 by following rolling bearing 19, bar 6, spring 7, bar 10, force transducer 11, bar 12 and pressing plate 13.Eccentric wheel 4 whenever revolves and turns around, and 16 pressurizations of pressing plate 13 road pavement basic unit test specimens once wash away the water generates dynamic pressure road pavement basic unit test specimen 16 in rubber mat plate slit 22.When eccentric wheel 4 leaves minimum point, by back-moving spring 9 pressing plate 13, bar 12, force transducer 11 and bar 10 are upwards resetted, in reseting procedure, produce pump suction between pressing plate 13 and the rubber mat plate slit 22, the fines sucking-off that sub-surface test specimen 16 is washed away forms purt mud phenomenon.
Simulation experiment method of the present invention: insert the semi-rigid pavement basic unit test specimen 16 full water in certain length of time in the test specimen tube 15 after one day, on put rubber mat plate 14 and fixed with sleeve, inject water 21 to certain height 50mm, utilize frequency converter that the frequency 0-20Hz of loading is set; Adjust the size of load application by the height of regulating test specimen tube 15 bases, motor 1 running, pressing plate 13 road pavement basic unit test specimens 16 are exerted pressure, simultaneously, force transducer 11 sends force signal to data acquisition unit after amplifier amplifies, photoelectric sensor 24 will load the number of times signal and send data acquisition unit to, and data acquisition system (DAS) will write down and show the pressure size and apply number of times, imposed load is to stipulated number, by the erosion resistibility of mass loss evaluating material.
Claims (4)
1, a kind of moving hydraulic pressure is to cracking bituminous pavement basic unit scouring simulation test device, comprise mechanical system, data acquisition system (DAS) and variable-frequency power sources driver, data acquisition system (DAS) comprises amplifier, data acquisition unit and computing machine, it is characterized in that: described mechanical system comprises motor (1), driving belt (2) and camshaft (3), photoelectric sensor (24) is installed in camshaft (3) next door, camshaft (3) is provided with rolling bearing (5), inertial flywheel (20) and eccentric wheel (4), eccentric wheel (4) is by rolling bearing (19) and bar (6) and be located at tube spring (7) and bar (10) in (8) and be linked in sequence, back-moving spring (9) is enclosed within on the bar (10), be connected with force transducer (11) between bar (10) and the bar (12), the lower end of bar (12) connects pressing plate (13), the upper end of adjusting screw(rod) (17) is provided with pallet (23), its lower end is provided with set nut (18), test specimen tube (15) is installed on the pallet (23), the rubber mat plate (14) that is used for simulating bituminous pavement is housed in the test specimen tube (15).
2, moving hydraulic pressure according to claim 1 is to cracking bituminous pavement basic unit scouring simulation test device, it is characterized in that: described rubber mat plate (14) is the round rubber plate of elastic modulus E=100～150, its diameter is 150mm, thickness is 25～30mm, and open wide a 2～5mm of being in the middle of the rubber slab, length is the strip slit (22) of 50～60mm.
3, moving hydraulic pressure according to claim 2 is to cracking bituminous pavement basic unit scouring simulation test device, it is characterized in that: retaining valve is installed at the center of described pressing plate (13) and bar (12), pressing plate (13) disappears with the pump suction in rubber mat plate slit (22) when retaining valve is worked, and pressing plate (13) produces pump suction with rubber mat plate slit (22) when retaining valve is not worked.
4, a kind of moving hydraulic pressure is characterized in that cracking bituminous pavement basic unit scouring simulation test method:
The full water of the semi-rigid pavement basic unit test specimen (16) in certain length of time is inserted after one day in the test specimen tube (15), on put rubber mat plate (14) and fix with sleeve, injection water (21) utilizes frequency converter that the frequency 0-20Hz of loading is set to certain height 50mm; Adjust the size of load application by the height of regulating test specimen tube (15) base, motor (1) running, pressing plate (13) road pavement basic unit test specimen (16) is exerted pressure, simultaneously, force transducer (11) sends force signal to data acquisition unit after amplifier amplifies, photoelectric sensor (24) will load the number of times signal and send data acquisition unit to, data acquisition system (DAS) will write down and show the pressure size and apply number of times, imposed load is to stipulated number, by the erosion resistibility of mass loss evaluating material.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100426058A CN100381818C (en) | 2005-04-27 | 2005-04-27 | Scouring simulation test equipment and method for base course of cracked asphalt pavement from dynamic hydraulic pressure |
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| CNB2005100426058A CN100381818C (en) | 2005-04-27 | 2005-04-27 | Scouring simulation test equipment and method for base course of cracked asphalt pavement from dynamic hydraulic pressure |
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| CN1687775A true CN1687775A (en) | 2005-10-26 |
| CN100381818C CN100381818C (en) | 2008-04-16 |
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| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
| CN101216401B (en) * | 2008-01-09 | 2010-12-15 | 华南理工大学 | Asphalt mixture hydrodynamic pressure scouring test apparatus |
| CN102183452A (en) * | 2011-02-22 | 2011-09-14 | 同济大学 | Anti-erosion performance testing method for road material |
| CN102253187A (en) * | 2011-04-18 | 2011-11-23 | 哈尔滨工业大学 | Test device and method for water-temperature coupling in open type asphalt mixture |
| CN101344517B (en) * | 2008-04-23 | 2011-12-14 | 张宏超 | Appraisement method for asphalt mixture hydrosphere steadiness test |
| CN102621016A (en) * | 2012-04-16 | 2012-08-01 | 浙江旷达纺织机械有限公司 | Through silk thread spring testing device |
| CN104198266A (en) * | 2014-08-05 | 2014-12-10 | 中交国通公路工程技术有限公司 | Anti-scouring testing device for road pavement material |
| CN104458472A (en) * | 2014-12-22 | 2015-03-25 | 山东硅元新型材料有限责任公司 | Method and equipment for detecting water erosion resistance of ceramic pug |
| CN104483257A (en) * | 2014-12-27 | 2015-04-01 | 长安大学 | Road cement concrete flowing water washout tester and use method thereof |
| CN105527214A (en) * | 2016-02-03 | 2016-04-27 | 裴春峰 | Concrete permeation detecting device |
| CN106644788A (en) * | 2016-11-11 | 2017-05-10 | 长安大学 | A tester and testing method for stimulating fatigue load and dynamic water erosion action |
| CN107807061A (en) * | 2017-11-24 | 2018-03-16 | 西华大学 | Scouring test device and scouring test system |
| CN108169044A (en) * | 2017-10-31 | 2018-06-15 | 河南省交通规划设计研究院股份有限公司 | Composite recycled material road surface full scale structure antiscour experimental rig and test method |
| CN108225961A (en) * | 2018-02-06 | 2018-06-29 | 山东省交通科学研究院 | A kind of semi-rigid sub-base material moves water washout test device and test method |
| CN110618050A (en) * | 2019-09-27 | 2019-12-27 | 长安大学 | Base material washout test device based on wheel load |
| CN114088566A (en) * | 2021-11-17 | 2022-02-25 | 湖南省交通科学研究院有限公司 | Anti-scouring performance test system of road bed layer material |
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| CN2554620Y (en) * | 2002-06-18 | 2003-06-04 | 长沙交通学院公路工程试验检测中心 | Road material washout test machine |
| US6799471B1 (en) * | 2003-06-12 | 2004-10-05 | Instrotek, Inc. | System and method for conditioning and detection of moisture damage in asphalt mixes |
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- 2005-04-27 CN CNB2005100426058A patent/CN100381818C/en not_active Expired - Fee Related
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| CN101216401B (en) * | 2008-01-09 | 2010-12-15 | 华南理工大学 | Asphalt mixture hydrodynamic pressure scouring test apparatus |
| CN101344517B (en) * | 2008-04-23 | 2011-12-14 | 张宏超 | Appraisement method for asphalt mixture hydrosphere steadiness test |
| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
| CN102183452A (en) * | 2011-02-22 | 2011-09-14 | 同济大学 | Anti-erosion performance testing method for road material |
| CN102183452B (en) * | 2011-02-22 | 2012-07-25 | 同济大学 | Anti-erosion performance testing method for road material |
| CN102253187A (en) * | 2011-04-18 | 2011-11-23 | 哈尔滨工业大学 | Test device and method for water-temperature coupling in open type asphalt mixture |
| CN102253187B (en) * | 2011-04-18 | 2014-07-30 | 哈尔滨工业大学 | Test device and method for water-temperature coupling in open type asphalt mixture |
| CN102621016A (en) * | 2012-04-16 | 2012-08-01 | 浙江旷达纺织机械有限公司 | Through silk thread spring testing device |
| CN104198266A (en) * | 2014-08-05 | 2014-12-10 | 中交国通公路工程技术有限公司 | Anti-scouring testing device for road pavement material |
| CN104458472B (en) * | 2014-12-22 | 2017-02-01 | 山东硅元新型材料有限责任公司 | Method and equipment for detecting water erosion resistance of ceramic pug |
| CN104458472A (en) * | 2014-12-22 | 2015-03-25 | 山东硅元新型材料有限责任公司 | Method and equipment for detecting water erosion resistance of ceramic pug |
| CN104483257A (en) * | 2014-12-27 | 2015-04-01 | 长安大学 | Road cement concrete flowing water washout tester and use method thereof |
| CN104483257B (en) * | 2014-12-27 | 2017-04-05 | 长安大学 | A kind of dynamic water washout test instrument of the road cement concrete and its using method |
| CN105527214A (en) * | 2016-02-03 | 2016-04-27 | 裴春峰 | Concrete permeation detecting device |
| CN106644788A (en) * | 2016-11-11 | 2017-05-10 | 长安大学 | A tester and testing method for stimulating fatigue load and dynamic water erosion action |
| CN106644788B (en) * | 2016-11-11 | 2023-02-28 | 长安大学 | Tester and testing method for simulating fatigue load and flowing water scouring action |
| CN108169044A (en) * | 2017-10-31 | 2018-06-15 | 河南省交通规划设计研究院股份有限公司 | Composite recycled material road surface full scale structure antiscour experimental rig and test method |
| CN107807061A (en) * | 2017-11-24 | 2018-03-16 | 西华大学 | Scouring test device and scouring test system |
| CN108225961A (en) * | 2018-02-06 | 2018-06-29 | 山东省交通科学研究院 | A kind of semi-rigid sub-base material moves water washout test device and test method |
| CN108225961B (en) * | 2018-02-06 | 2023-11-07 | 山东省交通科学研究院 | Semi-rigid base material dynamic water scouring test device and test method |
| CN110618050A (en) * | 2019-09-27 | 2019-12-27 | 长安大学 | Base material washout test device based on wheel load |
| CN114088566A (en) * | 2021-11-17 | 2022-02-25 | 湖南省交通科学研究院有限公司 | Anti-scouring performance test system of road bed layer material |
| CN114088566B (en) * | 2021-11-17 | 2023-11-03 | 湖南省交通科学研究院有限公司 | Anti-scouring performance test system for road base material |
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