CN101614642A - Asphalt mixed material road face abrasion simulator and method of testing thereof - Google Patents
Asphalt mixed material road face abrasion simulator and method of testing thereof Download PDFInfo
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- CN101614642A CN101614642A CN200910054618A CN200910054618A CN101614642A CN 101614642 A CN101614642 A CN 101614642A CN 200910054618 A CN200910054618 A CN 200910054618A CN 200910054618 A CN200910054618 A CN 200910054618A CN 101614642 A CN101614642 A CN 101614642A
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Abstract
A kind of asphalt mixed material road face abrasion simulator, it comprises support, motor, tire, controller, the support two ends are equipped with tire, motor is arranged under the support, controller links to each other with motor and controls its running, it can also be provided with gravity application system simulation vehicle load on support, and rains in the simulation of tire arranged outside water spray system.The method of testing of asphalt mixed material road face abrasion simulator, it makes the rut plate with asphalt, places the ground of tire below and tyre rotation warp; That can select exerts pressure or the rut plate is sprayed water support, and by controller control motor operation, the simulator support drives tire with the motor rotation and rotates on the rut plate; Measure the friction factor of the asphalt of tire active position on the rut plate again by the swinging friction coefficient analyzer.The present invention has realized the wearability test to asphaltic road-mix surface course, and simple in structure, and is easy to operate.
Description
Technical field
The invention belongs to road engineering, relate to a kind of road surface tester, particularly a kind of asphalt mixed material road face abrasion simulator.
Background technology
In present highway layout standard, have only cement concrete pavement that the abrasion test method is arranged, and at present still do not have relevant regulations in the standard of the main paving form bituminous concrete pavement of road.The test method of having only the measuring friction coefficient that builds up the road surface.
About the abrasion test of cement concrete, mature methods has all been arranged at present both at home and abroad, in the ATSMC of U.S. 77-89a, mainly comprise three kinds of methods: rotating disc type, roughening roller type and ball-type.China Research Institute of Building Materials Industry is with reference to the principle of U.S. ATSM C 944-95.Adopt rotation abrasion method to develop the novel abrasion testing machine and the cement concrete pavement abrasion test method (T 0510-2005) of cement concrete.
The abrasion test of cement concrete: test specimen is put to the horizontal rotating disc of abrasion wear test machine, with anchor clamps that it is fastening gently.Mill 30 changes under the 200N load, takes off test specimen outwash surface dust then and weighs, and writes down respective quality, and mill 60 changes under the 200N load then, and take off test specimen outwash surface dust then and weigh, and the record residual mass.It is to grind the cement concrete test block with roll, and the wear extent of calculating each test specimen characterizes the wearing quality of cement concrete, and it is directly used on the bituminous concrete obviously improper.
At present, the pertinent instruments about the frictional behaviour aspect of bituminous concrete road mainly contains swinging friction coefficient analyzer, dynamic friction coefficient (DF) analyzer, braking force coefficient (BFC) tester and sideway force coefficient routine investigation machine.But these several testers can only be measured the friction force performance on road surface, can not test the anti-wear performance on road surface; And in the practical project practice, the test of the anti-wear performance of bituminous pavement material therefor is a problem demanding prompt solution.Owing to there is not certain testing equipment that the abrasion resisting performance of material is tested, cause the material orientation of present wearing course single, caused on-site some building stones that meet the demands of highway can not use and a large amount of wasting of resources etc.
[1] abrasion test of cement concrete is taken out test specimen maintenance to 27d length of time from the maintenance place, dry surface moisture and be placed on air dry 12h in the room air, is putting into 60 ℃ ± 5 ℃ baking ovens, and 12h is to constant weight in baking.To put to room temperature outwash surface floating dust after the test specimen oven dry processing.Test specimen is put to the horizontal rotating disc of abrasion wear test machine, with anchor clamps that it is fastening gently.Mill 30 changes under the 200N load, takes off test specimen outwash surface dust then and weighs, and writes down respective quality, and mill 60 changes under the 200N load then, and take off test specimen outwash surface dust then and weigh, and the record residual mass.
[2] swinging friction coefficient analyzer, its work notion is the theorem according to energy conservation, and the swing arm losses of potential energy is changed into the merit that road surface friction force is done, and then inverse goes out friction factor and reads by the pendulum value of portable pendulum tester.
[3] dynamic friction coefficient (DF) tester is similar to portable pendulum tester, makes rotation function loss come inverse dynamic friction coefficient value by the friction force work done.
[4] braking force coefficient (BFC) tester, this kind equipment can be measured BFC according to the wheel braking force size under various velocity conditions, thereby reflect the road surface to the influence of car brakeing apart from length, test component is for being installed on the vehicle body or pulling dual mode.
[5] sideway force coefficient routine investigation machine, it can reflect the friction force performance of longitudinal and transverse two directions by the dynamic friction coefficient value on the testing wheel mensuration road surface of 20 ° of drift angles.The road conditions rapid detection system can be grown apart from follow-on test with the arbitrary speed road pavement, and the water-spraying amount of at every turn carrying can be for the about 50km. of test
Summary of the invention
The objective of the invention is at the relevant regulations that does not have in the present standard about the test of bituminous concrete pavement abrasion performance, a kind of asphalt mixed material road face abrasion simulator and method of testing thereof are provided, can carry out thoroughly evaluating to the anti-tire wear ability of asphalt, extended the content of estimating, the automatic control of the process of the test of realization.
For reaching above purpose, solution of the present invention is: utilize the method for quickening loading, the rut plate is carried out the abrasion of tire, actual measurement wears away the friction factor of back rut plate, thereby draws the anti-tire wear ability of asphalt.
A kind of asphalt mixed material road face abrasion simulator, it comprises support, motor, tire, controller, and the support two ends are equipped with tire, and motor is arranged under the support, and controller links to each other with motor and controls its running.
It also comprises the gravity application system, and it is arranged on the support; Best, described gravity application system is symmetricly set in the motor both sides.
Described gravity application system comprises load carrier and places gravity installation on the load carrier that gravity installation is good to select counterweight for use.
It also comprises water spray system, and it is arranged at the tire outside, by controller control water spray.
Described water spray system comprises that shower nozzle, shower nozzle quote water source and shower nozzle stationary installation, and shower nozzle links to each other with controller and controls its work by controller.
A kind of method of testing of asphalt mixed material road face abrasion simulator, it may further comprise the steps:
1) asphalt is made the rut plate, places the ground of tire below and tyre rotation warp;
2) controller control motor operation, the simulator support drives tire with the motor rotation and rotates on the rut plate;
3) after tire was finished and set the friction number of times, simulator quit work;
4) take out the rut plate, measure the friction factor of the asphalt of tire active position on the rut plate by the swinging friction coefficient analyzer.
Described controller is adjusted the rotating speed simulation speed of a motor vehicle of motor as required.
It also is included in described step 2) preceding, it is vehicle-mounted to apply required pressure simulation reality by the gravity application system on the simulator support.
It also is included in described step 2) preceding, rainy by water spray system to the simulation of rut plate injection water.
Owing to adopted such scheme, the present invention to have following characteristics: the present invention has realized the wearability test to asphaltic road-mix surface course, and simple in structure, and is easy to use, and test flexibly.
Description of drawings
Fig. 1 is an asphalt mixed material road face abrasion simulator synoptic diagram of the present invention.
Fig. 2 is the process flow diagram of the actual test of simulator of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
Asphalt mixed material road face abrasion simulator of the present invention is made of jointly support 1, motor 2, counterweight 3, shower nozzle 4, tire 5, controller 7, and as shown in Figure 1, structure and assembly relation that it is concrete are as follows:
Described motor 2 is the power machines that can provide support 1 to rotate, and can regulate the power size according to the difference of support 1 rotating speed.
Described tire 5 is about 30cm for diameter, and width is the actual tire of 10cm, and outside decorative pattern can be changed according to the tyre tread of vehicle on the actual road surface, and has aerating device, can pressurize at any time and reduce pressure.
Described controller 7 links to each other with motor 2, shower nozzle 4 by data line, is made up of rotational speed governor, printhead controller, controls the rotating speed of support 1, the size of water spray in real time by the rotating speed of control motor 2 and the big I of shower nozzle 4 inflows.Size by this simulation size of vehicle flowrate and rainfall is to the influence of asphaltic road-mix surface course abrasion resisting effect.
Described shower nozzle 4 links to each other with the water source of outside, is placed in independently on the support.Can regulate the injection flow rate that the inflow size is controlled shower nozzle 4 by printhead controller.
The workflow of asphalt mixed material road face abrasion simulator of the present invention is as follows:
A) four rut plates 6 asphalt being made, quadrate closely are placed on tire 5 and rotate the place that can pass through;
B) utilize the rotation of support 1, wheel 5 is turned on rut plate 6.Be fixed on the top of support 1 then according to the counterweight 3 of the actual vehicle-mounted heavy big young pathbreaker's fixed weight that will simulate;
C) open the power supply of motor 2 and controller 7;
D) open shower nozzle 4, by the speed that printhead controller is regulated water spray, the size of speed is according to the size control of the rainfall on the real road;
E) actuating motor 2, by rotational speed governor, regulate motor 2, make simulation tire 5 do the rotation of a direction by the rotation of support 1 on rut plate 6, and rotating speed is formulated according to the actual average speed of vehicle on the highway;
F) behind the friction number of times of finishing setting, system stops automatically; The friction number of times is determined according to the size of actual traffic amount, after system stops, rut plate 6 is taken out, and utilizes the swinging friction coefficient analyzer to measure the friction factor of the asphalt of tire 5 active positions on the rut plate 6.
The basic functional principle of asphalt mixed material road face abrasion simulator of the present invention is: the sliding friction by the simulation tire is simulated the influence of the rolling friction of vehicle tyre on the actual road surface to actual road surface to the influence of rut plate.
The advantage that the present invention has: (1) has remedied the blank that does not have the test of asphalt abrasion resistance in the existing standard; (2) by small-sized circular track test, the point that much can be used to measure asphalt abrasion back friction factor is provided, thus the work efficiency that increases substantially; (3) testing equipment has very big dirigibility, and the speed of simulation tire rotation and number of times, simulation tire can independently be set according to the test needs the size of rut plate pressure, so the wide range of test evaluation is general; (4) equipment is reasonable in design, is provided with fountain head on support arm, can sprinkle water on the rut plate at any time, on the one hand, can simulate the attrition of rainy day tire road pavement; On the other hand, can the rotation of simulation tire in the test be tended towards stability more by an amount of watering; (5) operation of equipment is convenient, only needs to set correlation parameter, and tire just can rotate on the rut plate automatically; (6) the present invention has good expansibility, by to the big or small isoparametric modification of the speed of tire rotation and number of times, simulation tire to rut plate pressure, can realize different experiment processes and test demand, adaptation more neatly the development of pavement technique and traffic technique.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (10)
1, a kind of asphalt mixed material road face abrasion simulator is characterized in that: it comprises support, motor, tire, controller, and the support two ends are equipped with tire, and motor is arranged under the support, and controller links to each other with motor and controls its running.
2, asphalt mixed material road face abrasion simulator as claimed in claim 1 is characterized in that: it also comprises the gravity application system, and it is arranged on the support.
3, asphalt mixed material road face abrasion simulator as claimed in claim 2 is characterized in that: described gravity application system is symmetricly set in the motor both sides.
4, asphalt mixed material road face abrasion simulator as claimed in claim 2 is characterized in that: described gravity application system comprises load carrier and places gravity installation on the load carrier that gravity installation is good to select counterweight for use.
5, asphalt mixed material road face abrasion simulator as claimed in claim 1 is characterized in that: it also comprises water spray system, and it is arranged at the tire outside, by controller control water spray.
6, asphalt mixed material road face abrasion simulator as claimed in claim 5 is characterized in that: described water spray system comprises that shower nozzle, shower nozzle quote water source and shower nozzle stationary installation, and shower nozzle links to each other with controller and controls its work by controller.
7, the method for testing of asphalt mixed material road face abrasion simulator as claimed in claim 1, it is characterized in that: it may further comprise the steps:
1) asphalt is made the rut plate, places the ground of tire below and tyre rotation warp;
2) controller control motor operation, the simulator support drives tire with the motor rotation and rotates on the rut plate;
3) after tire was finished and set the friction number of times, simulator quit work;
4) take out the rut plate, measure the friction factor of the asphalt of tire active position on the rut plate by the swinging friction coefficient analyzer.
8, the method for testing of asphalt mixed material road face abrasion simulator as claimed in claim 7 is characterized in that: described controller is adjusted the rotating speed simulation speed of a motor vehicle of motor as required.
9, as the method for testing of claim 7 or 8 described asphalt mixed material road face abrasion simulators, it is characterized in that: it also is included in described step 2) preceding, it is vehicle-mounted to apply required pressure simulation reality by the gravity application system on the simulator support.
10, as the method for testing of claim 7 or 8 described asphalt mixed material road face abrasion simulators, it is characterized in that: it also is included in described step 2) preceding, rainy by water spray system to the simulation of rut plate injection water.
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| CN200910054618A CN101614642A (en) | 2009-07-10 | 2009-07-10 | Asphalt mixed material road face abrasion simulator and method of testing thereof |
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| CN102426145A (en) * | 2011-11-22 | 2012-04-25 | 李航 | Rubber wearing and tearing tester |
| CN102661915A (en) * | 2012-04-28 | 2012-09-12 | 同济大学 | Impact rolling model tester and application thereof |
| CN102706719A (en) * | 2012-05-29 | 2012-10-03 | 哈尔滨工业大学 | Wheel type polishing machine |
| CN103207126A (en) * | 2013-03-29 | 2013-07-17 | 辽宁省交通科学研究院 | Device and method for testing surface abrasion of pavement material |
| CN103471946A (en) * | 2013-08-23 | 2013-12-25 | 长安大学 | Accelerated wear test device and test method for cement concrete pavement |
| CN103712909A (en) * | 2014-01-13 | 2014-04-09 | 东南大学 | Synchronous testing method for friction coefficient and friction noise of pavement |
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| CN104655571A (en) * | 2015-03-19 | 2015-05-27 | 云南省交通规划设计研究院 | Device for simulating visibility test of drainage asphalt pavement under rainy day conditions |
| CN104807977A (en) * | 2015-05-13 | 2015-07-29 | 云南省交通规划设计研究院 | Hydrological simulation device for drainage asphalt pavement and testing method for hydrological simulation device |
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2009
- 2009-07-10 CN CN200910054618A patent/CN101614642A/en active Pending
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| CN109612862B (en) * | 2018-12-10 | 2022-05-10 | 福建博海工程技术有限公司 | Experimental device and method for simulating influence of tire brake sliding friction on road surface abrasion |
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Open date: 20091230 |