CN204389330U - Laxity pick-up unit within the scope of a kind of asphalt total temperature - Google Patents
Laxity pick-up unit within the scope of a kind of asphalt total temperature Download PDFInfo
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- CN204389330U CN204389330U CN201520096174.2U CN201520096174U CN204389330U CN 204389330 U CN204389330 U CN 204389330U CN 201520096174 U CN201520096174 U CN 201520096174U CN 204389330 U CN204389330 U CN 204389330U
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- laxity
- test specimen
- guide rod
- asphalt
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Abstract
The utility model discloses laxity pick-up unit within the scope of a kind of asphalt total temperature, comprise temperature control box and be arranged on the base in temperature control box, base is provided with test specimen, be provided with above test specimen can near or away from the contact probe of test specimen, contact probe is arranged on guide rod, rod being rotatable, and counter weight device is provided with on guide rod.The utility model can meet the demand that within the scope of total temperature, asphalt laxity is evaluated, and principle is simple, and easy to operate, can be the design of bituminous pavement, the maintenance of road provides a kind of device of the loose performance of evaluation asphalt of simple possible.
Description
Technical field
The utility model relates to road asphalt test mixture technical field, is specifically related to laxity pick-up unit within the scope of a kind of asphalt total temperature.
Background technology
The loose use initial stage mostly occurring in bituminous pavement is that the aggregate particle in bituminous concrete surface layer comes off, and the progressive process developed downwards from surface.Aggregate particle and wrap between pitch and lose the main cause that cohesive force is particle detachment.It is poor that in Asphalt Mixture Design, Problems existing mainly comprises that mineral aggregate is acid stone, wet or selected bituminous cements cohesive force crossed by mineral aggregate used, thus make asphalt membrane and lack between gathering materials effectively to bond; Design asphalt content used on the low side, what make asphalt membrane wraps thickness deficiency, and the disengaging from compound that makes to gather materials under the effect of outside water is formed loose.Along with the continuous accumulation of expressway construction experience and improving constantly of its construction level, the less appearance of the early stage loose disease in road surface, and the loose combined action that may come from Water Damage and vehicular load occurred after using certain hour, so the loose performance need that will improve road surface selects loose asphalt of good performance, and also there is no the device that systematically can detect loose performance evaluation within the scope of asphalt total temperature at present.
Summary of the invention
The purpose of this utility model is, provides laxity pick-up unit within the scope of a kind of asphalt total temperature, evaluates asphalt laxity by control different temperatures and different loading condition.
Laxity pick-up unit within the scope of a kind of asphalt total temperature, comprise temperature control box and be arranged on the base in temperature control box, base is provided with test specimen, be provided with above test specimen can near or away from the contact probe of test specimen, contact probe is arranged on guide rod, rod being rotatable, and counter weight device is provided with on guide rod.
Further, described guide rod is provided with the first sprocket wheel, the first sprocket wheel is connected and installed in the second sprocket wheel on motor output shaft by chain.
Further, described guide rod is fixed with rotating disk, the bottom of rotating disk is provided with pearl groove, is equipped with ball in pearl groove; Rotating disk is arranged on a lifter plate, lifter plate is provided with the circular groove with ball engagement; Be provided with hydraulic means bottom lifter plate, described motor is fixedly installed on lifter plate.
Further, described counter weight device comprises the pallet being arranged at guide rod upper end, and pallet is provided with balancing weight.
Further, described base is provided with draw-in groove, and test specimen is removably installed in draw-in groove.
Further, described contact probe is cylindric, and the lower surface of contact probe is enclosed with rubber layer.
The utility model has following technical characterstic:
(1) structure is simple, can be by force handling, easy accessibility;
(2) realistic requirement, this test unit can evaluate the laxity of asphalt under different temperatures and different loading condition preferably;
(3) provide the assay method that within the scope of a kind of total temperature, asphalt laxity is evaluated, test philosophy is simple, and Computer-Assisted Design, Manufacture And Test is simple, and testing crew can control test overall process, and test effect is clear and definite, and data preparation is simple.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model;
Number in the figure represents: 1-temperature control box, 2-base, 3-draw-in groove; 4-rubber layer; 5-contact probe; 6-guide rod; 7-the first sprocket wheel, 8-pallet, 9-balancing weight, 10-chain, 11-rotating disk, the 12-the second sprocket wheel, 13-motor, 14-test specimen, 15-ball, 16-hydraulic means, 17-lifter plate.
Embodiment
The utility model proposes a kind of at the device of total temperature scope build-in test asphalt laxity, can convenience, test compactly, and propose the index and approach evaluating asphalt laxity.
Laxity pick-up unit within the scope of a kind of asphalt total temperature, the base 2 comprising temperature control box 1 and be arranged in temperature control box 1, base 2 is provided with test specimen 14, be provided with above test specimen 14 can near or away from the contact probe 5 of test specimen 14, contact probe 5 is arranged on guide rod 6, guide rod 6 is rotatable, and is provided with counter weight device on guide rod 6.
Because asphalt has obvious impact when temperature is different to its usability, therefore in order to as far as possible close to actual conditions, simulate different temperature environments, be provided with temperature control box 1, temperature control box 1 can regulate the temperature inside the box in a more wide in range scope.Test specimen 14 is arranged in temperature control box 1, is fixed on base 2.The ultimate principle of this programme is, by contact probe 5 and test specimen 14 surface contact and friction, by apply uniform temperature, load and friction dynamics, collect the loss quality of test specimen 14 over time, with mass loss number evaluate the raveling resistance energy of test specimen 14.
Contact probe 5 can contact with test specimen 14 upper surface, and contact probe 5 can rotate, with test specimen 14 upper surface that rubs.Counter weight device gives test specimen 14 surface applying load to a certain degree by contact probe 5.For the ease of installation and the load application of test specimen 14, need contact probe 5 can near or away from test specimen 14 surface.Temperature control box 1 upper surface has hole, for making contact probe 5 extend in temperature control box 1 by guide rod 6.
Particularly, described contact probe 5 is mounted on a guide rod 6, and guide rod 6 is provided with the first sprocket wheel 7, the first sprocket wheel 7 and is connected and installed in the second sprocket wheel 12 on motor 13 output shaft by chain 10.
By the cooperation of sprocket wheel chain 10, drive guide rod 6 to rotate, then make contact probe 5 rotate, with test specimen 14 surface that can rub after test specimen 14 surface contact.
Guide rod 6 is fixed with rotating disk 11, the bottom of rotating disk 11 is provided with pearl groove, is equipped with ball 15 in pearl groove; Rotating disk 11 is arranged on a lifter plate 17, lifter plate 17 is provided with the circular groove coordinated with ball 15; Be provided with hydraulic means 16 bottom lifter plate 17, described motor 13 is fixedly installed on lifter plate 17.
In order to make contact probe 5 can easily near or away from test specimen 14 surface with load application, be provided with lifter plate 17.Lifter plate 17 adjusts its position by hydraulic means 16, and motor 13 and the second sprocket wheel 12 are also be located on lifter plate 17, moves up and down with lifter plate 17.Hydraulic means 16 accurately can be controlled by controller.The fit system of lifter plate 17 and guide rod 6 is particularly, lifter plate 17 is provided with through hole, through guide rod 6, and bottom the rotating disk 11 that guide rod 6 is fixedly installed, be provided with ball 15, and rotating disk 11 is arranged in circular groove by ball 15, owing to being provided with ball 15 structure, make the friction force between rotating disk 11 and lifter plate 17 very little, do not affect the normal transmission of rotating disk 11.Rotating disk 11 is fixed on guide rod 6, rotates with guide rod 6, meanwhile ball 15 quick rotation in circular groove.The another one effect of ball 15 is loads, when lifter plate about 17 adjusts position, drives rotating disk 11 to move up and down, also just be have adjusted the position of contact probe 5 by guide rod 6 by ball 15.
Counter weight device comprises the pallet 8 being arranged at guide rod 6 upper end, pallet 8 is provided with balancing weight 9.
Counter weight device is to apply certain load to test specimen 14 surface, simulates the loose situation of asphalt under different vehicle-mounted state.Be provided with circular hole in the middle part of balancing weight 9, can be sleeved on guide rod 6.
Base 2 is provided with draw-in groove 3, test specimen 14 is removably installed in draw-in groove 3.At the trial, adopt rut plate test specimen 14, draw-in groove 3 size is close to the size of 1/4 rut plate, and groove depth is slightly less than rut plate height.Rut plate test specimen 14 is the as broad as long bulks close to 1/4 rut plate size.
Contact probe 5 is cylindric, the lower surface of contact probe 5 is enclosed with rubber layer 4.It is that conveniently it rotates that contact probe 5 is arranged to cylindric, and its lower surface is plane simultaneously, can contact completely with test specimen 14 upper surface.The rubber layer 4 of contact probe 5 lower surface parcel, the friction condition that test specimen 14 surface can be made to face is identical with the wheel of vehicle in reality.
Utilize said apparatus to evaluate the laxity within the scope of asphalt total temperature, can carry out as follows:
1. preliminary work
1.1. according to the Bituminous Mixture Ratio that actual requirement and specification specify, make rut plate test specimen by standard some, sample dimensions should meet 300mm × 300mm × 50mm;
1.2. after specimen molding, the test specimen placed at normal temperatures together with die trial is no less than 12h, and take out test specimen and cut each test specimen, a rut plate cuts into four little rut plate member, sample dimensions meets 120mm × 120mm × 50mm, and the quantity often organizing test specimen must not be less than 4;
1.3. the lower water temperature of Water Tank with Temp.-controlled is to the test temperature required, the test temperature of low temperature laxity test is 5 DEG C ± 0.5 DEG C, and the test temperature of standard laxity test is 20 DEG C ± 0.5 DEG C, and hot loose test temperature is 60 DEG C ± 0.5 DEG C;
1.4 Frozen-thawed cycled laxity tests need to prepare refrigerator, and temperature is-18 DEG C ± 0.5 DEG C.
2. experimental procedure
2.1. test specimen is put into Water Tank with Temp.-controlled health, for the test of Frozen-thawed cycled laxity, test specimen being put into temperature is-18 DEG C ± 0.5 DEG C refrigerator 24h, then takes out 24h at room temperature, so circulation 6 times; By test specimen, 5 DEG C ± 0.5 DEG C Water Tank with Temp.-controlled 24h is put into for the test of low temperature laxity, then takes out 24h at room temperature, so circulation 6 times; By test specimen, 60 DEG C ± 0.5 DEG C Water Tank with Temp.-controlled health 24h is put into for hot loose test, then takes out and place 24h at room temperature, so circulation 6 times; By test specimen, 20 DEG C ± 0.5 DEG C Water Tank with Temp.-controlled 24h is put into for the test of standard laxity, then takes out and place 24h at room temperature, so circulation 3 times;
2.2. often organize 8 test specimens and be equally divided into two groups, for adding load and not adding the situation of load, take the quality m of each test specimen respectively
0, accurately to 0.1g;
2.3. standard laxity is tested, (balancing weight of some is added) under certain load action, test specimen is put into the temperature control box setting temperature (20 DEG C ± 0.5 DEG C), and be fixed in draw-in groove, then hydraulic means is utilized to adjust the position of lifter plate, contact probe is contacted with test specimen upper surface, starts motor with the rotational speed 1h of 30r/min, take residual test specimen quality m
1;
2.4. for the method for the loose test of the same standard of method of the test of Frozen-thawed cycled laxity, the test of low temperature laxity, hot loose test.The parallel experiment of every group must not be less than 4 times.
3. calculate
The loss of asphalt laxity is calculated as follows:
In formula: Δ S---asphalt laxity is lost, %;
M
0---the quality of test specimen before test;
M
1---the quality of test specimen after test;
4. the evaluation of laxity
Under Frozen-thawed cycled, low temperature, standard, hot conditions, the raveling resistance of the less explanation asphalt of loose loss of asphalt can be better, and vice versa.
The utility model can meet the demand that within the scope of total temperature, asphalt laxity is evaluated, and principle is simple, and easy to operate, can be the design of bituminous pavement, the maintenance of road provides a kind of device for evaluating the loose performance of asphalt of simple possible.
Claims (6)
1. laxity pick-up unit within the scope of an asphalt total temperature, it is characterized in that, comprise temperature control box (1) and be arranged on the base (2) in temperature control box (1), base (2) is provided with test specimen (14), test specimen (14) top be provided with can near or away from the contact probe (5) of test specimen (14), contact probe (5) is arranged on guide rod (6), guide rod (6) is rotatable, and is provided with counter weight device on guide rod (6).
2. laxity pick-up unit within the scope of asphalt total temperature as claimed in claim 1, it is characterized in that, described guide rod (6) is provided with the first sprocket wheel (7), and the first sprocket wheel (7) is connected and installed in the second sprocket wheel (12) on motor (13) output shaft by chain (10).
3. laxity pick-up unit within the scope of asphalt total temperature as claimed in claim 2, it is characterized in that, described guide rod (6) is fixed with rotating disk (11), the bottom of rotating disk (11) is provided with pearl groove, is equipped with ball (15) in pearl groove; Rotating disk (11) is arranged on a lifter plate (17), lifter plate (17) is provided with the circular groove coordinated with ball (15); Lifter plate (17) bottom is provided with hydraulic means (16), and described motor (13) is fixedly installed on lifter plate (17).
4. laxity pick-up unit within the scope of asphalt total temperature as claimed in claim 1, it is characterized in that, described counter weight device comprises the pallet (8) being arranged at guide rod (6) upper end, pallet (8) is provided with balancing weight (9).
5. laxity pick-up unit within the scope of asphalt total temperature as claimed in claim 1, it is characterized in that, described base (2) is provided with draw-in groove (3), and test specimen (14) is removably installed in draw-in groove (3).
6. laxity pick-up unit within the scope of asphalt total temperature as claimed in claim 1, it is characterized in that, described contact probe (5), for cylindric, the lower surface of contact probe (5) is enclosed with rubber layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520096174.2U CN204389330U (en) | 2015-02-11 | 2015-02-11 | Laxity pick-up unit within the scope of a kind of asphalt total temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520096174.2U CN204389330U (en) | 2015-02-11 | 2015-02-11 | Laxity pick-up unit within the scope of a kind of asphalt total temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389330U true CN204389330U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520096174.2U Expired - Fee Related CN204389330U (en) | 2015-02-11 | 2015-02-11 | Laxity pick-up unit within the scope of a kind of asphalt total temperature |
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| Country | Link |
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| CN (1) | CN204389330U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547854B (en) * | 2015-12-28 | 2018-03-27 | 哈尔滨工业大学 | Evaluation system and method for a kind of aircraft multiple-wheel load effect to asphalt pavement synergistic effect under hot conditions |
| 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 |
| CN110441227A (en) * | 2019-08-13 | 2019-11-12 | 河海大学 | The synchrometer and test method of bituminous concrete antiskid performance and attenuation law |
| RU2821224C1 (en) * | 2023-06-05 | 2024-06-18 | Акционерное общество "Научно-производственная корпорация " Уралвагонзавод" имени Ф.Э. Дзержинского" | Method of testing binding materials for cold-hardening mixtures for heat resistance |
-
2015
- 2015-02-11 CN CN201520096174.2U patent/CN204389330U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547854B (en) * | 2015-12-28 | 2018-03-27 | 哈尔滨工业大学 | Evaluation system and method for a kind of aircraft multiple-wheel load effect to asphalt pavement synergistic effect under hot conditions |
| 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 |
| CN110441227A (en) * | 2019-08-13 | 2019-11-12 | 河海大学 | The synchrometer and test method of bituminous concrete antiskid performance and attenuation law |
| RU2821224C1 (en) * | 2023-06-05 | 2024-06-18 | Акционерное общество "Научно-производственная корпорация " Уралвагонзавод" имени Ф.Э. Дзержинского" | Method of testing binding materials for cold-hardening mixtures for heat resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20160211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |