CN109580334B - Asphalt ductility tester and application method thereof - Google Patents
Asphalt ductility tester and application method thereof Download PDFInfo
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- CN109580334B CN109580334B CN201811583704.0A CN201811583704A CN109580334B CN 109580334 B CN109580334 B CN 109580334B CN 201811583704 A CN201811583704 A CN 201811583704A CN 109580334 B CN109580334 B CN 109580334B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/28—Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
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Abstract
The invention discloses an asphalt extensibility tester and a using method thereof, and relates to the technical field of road material performance testing. When the division board moved, the driving piece drove the flabellum and rotated, stirs the waters of division board connection test mould one side for the high low temperature water intensive mixing of this side reduces the inhomogeneous condition of temperature and appears, sets up the appearance that the heating pipe at the cell body side can slow down negative and positive water, and the division board separates the waters of division board both sides, prevents that the test result from receiving the influence of flabellum stirring.
Description
Technical Field
The invention relates to the technical field of road material performance testing, in particular to an asphalt extensibility tester and a using method thereof.
Background
Asphalt is a pavement structure cementing material widely applied in road engineering, and the ductility of the asphalt is an important index for evaluating the plasticity of the asphalt. Ductility was generally measured by a bitumen ductility meter, and it was determined that a sample of bitumen was stretched at a rate of 5cm per minute (1 cm per minute when the temperature was low) to fracture at a temperature of 25 ℃, 15 ℃, 10 ℃ and 5 ℃ respectively, and the ductility of the bitumen was determined as the length (cm) at which the sample fractured. The greater the ductility, the better the plasticity of the bitumen.
Among the prior art, chinese utility model patent with grant publication number CN205580894U discloses an asphalt ductility instrument, including controller, basin, place stretching device and basin water temperature control device on the basin, be provided with on the cell wall of basin and be used for detecting by the flagging or the floating height of stretched pitch strip apart from the detecting element and be used for to the basin in add the water density regulating unit of water density regulator, the water density regulating unit adds the regulator that is used for adjusting the water density to the basin in response to the detected value of apart from the detecting element. Because the ductility of pitch can be influenced to the temperature to for the convenience compare with current data, generally be in the constant temperature environment with pitch when the test, but this kind of pitch ductility appearance is at the in-process that uses, can't satisfy homothermal condition, is not convenient for do the data contrast in later stage.
In the prior art, chinese utility model patent with the publication number of CN204241986U discloses a temperature control device for asphalt ductility instrument, which includes: the temperature control box comprises a temperature control box, a heating pipe, a cooling pipe and a temperature sensor, wherein the constant temperature box is connected with a transmitting device, the transmitting device is connected with a temperature acquisition device, the heating pipe and the cooling pipe are arranged in the temperature control box, and the temperature sensor is arranged on the heating pipe and the cooling pipe. Although the temperature control device for the asphalt ductility meter can adjust the temperature inside the ductility meter, the heating time of water in the water tank is long and the phenomena of yin and yang water exist, the heater is arranged at the bottom of the water tank, when the heater heats the water, the water at the lower part easily meets the requirement of the test temperature, and the water at the upper part is difficult to ensure the temperature required by the test, namely, the phenomena of yin and yang water with cool upper part and hot lower part occur, so that the test effect is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an asphalt ductility tester and a using method thereof, which can solve the problems, so that asphalt can be kept in a constant-temperature water area, and the accuracy of a test result is improved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an asphalt ductility apparatus, includes cell body, sliding connection at the inside division board of cell body, set up at the sliding block of division board one side, peg graft test mould and the drive arrangement of setting at the division board opposite side on sliding block and division board, the division board is perpendicular with the bottom of cell body, drive arrangement includes the flabellum, drives flabellum pivoted driving piece and drives the interlock spare of division board motion.
Through adopting above-mentioned technical scheme, in the motion of division board, the driving piece drives the flabellum and rotates, stirs the waters of division board connection test mould one side for the high low temperature water intensive mixing of this side reduces the inhomogeneous condition of temperature and appears, sets up the appearance that the heating pipe of cell body side can slow down negative and positive water, and the division board separates the waters of division board both sides, prevents that the test result from receiving the influence of flabellum stirring.
The invention is further configured to: the two sides of the partition plate are abutted to the tank body, and water flow holes are formed in the partition plate.
Through adopting above-mentioned technical scheme, can form rivers behind the water flow hole, and the direction of rivers is parallel with the bottom of cell body, and at the in-process that the division board removed, one side that the division board was provided with experimental mould stirs the waters of this side because the rivers that the water flow hole formed, the temperature of balanced this side.
The invention is further configured to: the linkage part comprises a main gear driven by the driving part to rotate, a pinion meshed with the main gear and a screw coaxially rotating with the pinion, and the partition plate is in threaded connection with the screw.
Through adopting above-mentioned technical scheme, the driving piece drives the fan blade pivoted on can also can transmitting the screw rod with the motion, drives the division board motion, reduces the quantity of driving piece, increases the work efficiency of driving piece.
The invention is further configured to: the sliding block is connected with the tank body in a sliding manner.
Through adopting above-mentioned technical scheme, sliding block and cell body sliding connection can change the distance between sliding block and the division board; because the division board all withdraws to same position at every turn, change the sliding block and be convenient for install the experimental mould of different length to the distance between the division board.
The invention is further configured to: the slot hole has been seted up to the both sides of sliding block, the bottom mounting of cell body has the dead lever that passes the slot hole, threaded connection has the nut with the sliding block butt on the dead lever.
Through adopting above-mentioned technical scheme, rotating the nut, after nut and the inseparable butt of sliding block, the gliding frictional force of sliding block increases, and the sliding block is difficult to slide to fix the sliding block, the convenience is fixed the sliding block.
The invention is further configured to: the test die comprises an end die and a middle die, the number of the end die and the number of the middle die are two, the test die is formed by splicing the end die and the middle die, and connecting rods are fixed on two sides of the middle die.
Through adopting above-mentioned technical scheme, middle mould and end mould concatenation are dismantled middle mould through holding the connecting rod, the dismantlement of middle mould when being convenient for experimental.
The invention is further configured to: the two sides of the end mould are provided with insertion grooves, and the middle mould is fixed with insertion blocks inserted into the insertion grooves.
Through adopting above-mentioned technical scheme, insert the piece and insert in the insertion groove, can increase the stability of end mould and middle mould concatenation, reduce the condition that end mould and middle mould separated when appearing at the motion test mould.
The invention is further configured to: one side that the middle mould is close to each other is fixed with the bulge respectively and sets up the recess, and the bulge can insert in the recess.
Through adopting above-mentioned technical scheme, the leakproofness that can increase the middle mould in the protrusion piece inserts the recess reduces pitch and appears from the condition of flowing out in the clearance between the middle mould.
In view of the defects in the prior art, the invention also aims to provide a method for using the asphalt ductility tester, so that the asphalt can be kept in a constant-temperature water area in the use process.
In order to achieve the purpose, the invention provides the following technical scheme: the application method of the asphalt ductility tester comprises the following steps:
s1: the inserting block of the middle die is inserted into the inserting groove, the protruding block of the middle die is inserted into the groove, and the distance between the first connecting column and the second connecting column is adjusted, so that the distance between the first connecting column and the end die through hole is the same as that between the second connecting column and the end die through hole;
s2: pouring the melted asphalt into a mold cavity of a test mold, and starting a heating pipe to heat a water area in the tank body;
s3: placing the test mold in a water area of the tank body to enable the temperature of the asphalt to be the same as that of the water area, and then sleeving the through hole of the test mold on the first connecting column and the second connecting column;
s4: the middle mould is taken down and the driving piece is opened, the fan blades are driven to rotate and the partition plates are driven to move towards the direction far away from the sliding block, asphalt is extended, and the average of the asphalt snapping experimental value of the three test moulds is recorded.
Through adopting above-mentioned technical scheme, can mix the stirring to the waters when the division board moves, the temperature of balanced waters for pitch can keep in homothermal waters, increases the accuracy of test result.
In conclusion, the beneficial technical effects of the invention are as follows:
1. when the partition plate moves, the driving piece drives the fan blades to rotate, the water area on one side of the partition plate, which is connected with the test die, is stirred, so that high-temperature water and low-temperature water on the side are fully mixed, the condition of uneven water temperature is reduced, the heating pipe arranged on the side edge of the tank body can slow down the appearance of negative and positive water, and the partition plate partitions the water areas on two sides of the partition plate, so that the test result is prevented from being influenced by the stirring of the fan blades;
2. water can form water flow after passing through the water flow holes, the direction of the water flow is parallel to the bottom end of the tank body, and in the moving process of the partition plate, the water area on one side of the partition plate, which is provided with the test mold, is stirred due to the water flow formed by the water flow holes, so that the water temperature on the side is balanced;
3. the driving piece drives the fan blade to rotate and can transmit the movement to the screw rod, the separation plate is driven to move, the number of the driving piece is reduced, and the working efficiency of the driving piece is increased.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a top view of the embodiment;
FIG. 3 is a schematic diagram showing the setup of a test mold;
FIG. 4 is an exploded view of a test mold;
fig. 5 is a schematic view showing a driving apparatus.
In the figure: 1. a tank body; 11. heating a tube; 12. a chute; 13. fixing the rod; 2. a partition plate; 21. a bump; 22. a water flow hole; 23. a connecting plate; 231. a first connecting column; 3. a slider; 31. a strip hole; 32. a nut; 33. a second connecting column; 4. testing the mold; 41. end die; 411. inserting the groove; 412. a through hole; 42. an intermediate die; 421. a protruding block; 422. a groove; 423. inserting a block; 424. a connecting rod; 5. a drive device; 51. a motor; 511. a fixing plate; 52. a main gear; 53. a pinion gear; 531. a screw; 54. a fan blade.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the utility model provides an asphalt extensibility apparatus, refers to figure 1, includes cell body 1, at the inside gliding division board 2 of cell body 1, set up sliding block 3 in division board 2 one side, peg graft test mould 4 on sliding block 3 and division board 2 and set up the drive arrangement 5 in division board 2 opposite side. The both sides of cell body 1 are provided with the heating pipe 11 that carries out the heating to cell body 1, are provided with temperature regulation subassembly on the heating pipe 11 for the hydroenergy in the cell body 1 can keep a stable temperature. The top end of the tank body 1 can be provided with an end cover to preserve heat of the water area of the tank body 1. The partition plate 2 is vertical to the bottom end of the tank body 1, and two sides of the partition plate 2 are abutted to the side wall of the tank body 1. The both ends of experimental mould 4 are pegged graft respectively on sliding block 3 and division board 2, and division board 2 moves under drive arrangement's 5 drive for the distance between sliding block 3 and the division board 2 changes, thereby extends the pitch in experimental mould 4.
Referring to fig. 1 and 3, two sides of the top end of the partition plate 2 are fixed with a projection 21, and the inner wall of the tank body 1 is provided with a chute 12 for the projection 21 to slide. A plurality of water flow holes 22 are further formed in the partition plate 2, and in the moving process of the partition plate 2, water on one side, close to the driving device 5, of the partition plate 2 enters one side, provided with the test die 4, of the partition plate 2 through the water flow holes 22 and generates water flow. The generated water flow stirs the water area of the partition plate 2 on which the test mold 4 is placed, so that the high and low temperature water on the water area is mixed.
The both sides of sliding block 3 are opened the symmetry and are seted up rectangular hole 31, and the bottom of cell body 1 is fixed with the dead lever 13 that passes rectangular hole 31 perpendicularly, and threaded connection has nut 32 on the dead lever 13. Sliding block 3 slides and can change sliding block 3 to the distance between the division board 2, and sliding block 3 slides the completion back, and the nut 32 of screwing, behind nut 32 and sliding block 3 inseparable butt, sliding block 3 can't slide.
Referring to fig. 3 and 4, the test die 4 includes an end die 41 and an intermediate die 42. The end dies 41 and the intermediate die 42 are both two in number. Insertion grooves 411 are formed at both sides of the end mold, and insertion blocks 423 inserted into the insertion grooves 411 are fixed to the middle mold 42. One side that middle mould 42 is close to each other is fixed with protruding piece 421 respectively and has seted up recess 422, and protruding piece 421 inserts and can increase middle mould 42's leakproofness in the recess 422, and the condition that the pitch flows out in the clearance between the middle mould 42 is reduced appears. The top end of the outer side of the middle die 42 is fixed with a connecting rod 424, and the connecting rod 424 is convenient for taking the middle die 42. After the middle die 42 is jointed with the end die 41, the top end of the test die 4 forms an 8-shaped die cavity.
The partition plate 2 is vertically fixed with a connecting plate 23 on one side close to the sliding block 3, and a first connecting post 231 is fixed on the connecting plate 23. A second connecting column 33 is fixed on the sliding block 3. The end of the end mold 41 is formed with a through hole 412 for inserting the first connection post 231 and the second connection post 33. The number of the first connecting posts 231 and the second connecting posts 33 is uniformly distributed (3 in the figure), so that the test data can be increased.
Use of test die 4: the end die 41 and the middle die 42 are spliced, in the splicing process, the inserting block 423 of the middle die 42 is inserted into the inserting groove 411, and the protruding block 421 of the middle die 42 is inserted into the groove 422, so that the splicing of the test die 4 is completed. After the test die 4 is spliced, molten asphalt is poured into the die cavity at the top end of the test die 4, and the asphalt is enabled to protrude out of the die cavity. After the asphalt is cooled, the part which protrudes out of the mold cavity is scraped by a scraper. Then the test mold 4 is placed in the tank body 1, and the water temperature in the tank body 1 is the same as the water temperature in the test. After about 1 hour, the through-hole 412 of the test die 4 is fitted with the first connecting post 231 and the second connecting post 33. Then the middle mold 42 is taken off and the upper mold 41 sleeved on the first connecting post 231 moves along with the partition plate 2 to extend the asphalt.
Referring to fig. 1 and 5, the driving device 5 includes a motor 51, a main gear 52 rotated by the motor 51, a sub-gear 53 engaged with the main gear 52, and fan blades 54 coaxially rotated with the main gear 52. A fixing plate 511 fixedly connected with the tank body 1 is fixed at the bottom end of the motor 51 to fix the motor 51. The number of the pinion gears 53 is two, the two pinion gears are symmetrically meshed at the side edge of the main gear, and the pinion gears 53 are rotatably connected with the tank body 1. A screw 531 that rotates coaxially with the pinion 53 is rotatably connected to the chute 12, and the screw 531 is rotatably connected to the projection 21 so that the partition plate 2 can move with the rotation of the screw 531.
The motor 51 rotates to drive the fan blades 54 and the main gear 52 to rotate; the rotation of the main gear 52 transfers the rotation to the pinion 53, and the rotation of the fan blades 54 can stir the water in the tank body 1, so that the water with high temperature and low temperature in the tank body 1 can be uniformly mixed. The rotation of the pinion 53 can drive the screw 531 to rotate, and the rotation of the screw 531 can drive the partition board 2 to move towards the direction close to the driving device 5, so as to extend the asphalt.
The asphalt ductility tester comprises the following steps:
(1) splicing the test die 4 and adjusting the spacing: the insertion block 423 of the intermediate mold 42 is inserted into the insertion groove 411, and the protrusion block 421 of the intermediate mold 42 is inserted into the groove 422. And then adjusting the distance between the first connecting column 231 and the second connecting column 33 according to the spliced test die 4, so that the distances between the first connecting column 231 and the second connecting column 33 and the through hole 412 of the end die 41 are the same.
(2) Pouring asphalt and heating water area: pouring the melted asphalt into the die cavity of the test die 4, and opening the heating pipe 11 to heat the water area in the cell body 1, so that the temperature of the water in the cell body 1 reaches the test temperature.
(3) Placing a test die 4: placing the test mold 4 into the water area of the pool body 1, standing for about one hour to make the temperature of the asphalt be the same as that of the water area, and then sleeving the through hole 412 of the test mold 4 on the first connecting column 231 and the second connecting column 33 to complete the placement of the test mold 4.
(4) The movable partition plate 2: the middle die 42 is taken down, the motor 51 is started, the fan blades 54 are driven to rotate, the partition plate 2 moves in the direction away from the sliding block 3 at the moment, the asphalt is extended, the asphalt snapping experimental values of the three test dies 4 are recorded, and finally the average is taken.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. The utility model provides a pitch ductility apparatus, includes cell body (1), sliding connection division board (2) inside cell body (1), sets up sliding block (3) in division board (2) one side, grafting test mould (4) on sliding block (3) and division board (2) and set up drive arrangement (5) at division board (2) opposite side, its characterized in that: the partition plate (2) is vertical to the bottom end of the tank body (1), and the driving device (5) comprises fan blades (54), a driving part for driving the fan blades (54) to rotate and a linkage part for driving the partition plate (2) to move;
two sides of the partition plate (2) are abutted against the tank body (1), and a water flow hole (22) is formed in the partition plate (2);
the linkage piece comprises a main gear (52) driven by a driving piece to rotate, a pinion (53) meshed with the main gear (52) and a screw (531) coaxially rotating with the pinion (53), and the partition plate (2) is in threaded connection with the screw (531).
2. The asphalt ductility tester as set forth in claim 1, characterized in that: the sliding block (3) is connected with the tank body (1) in a sliding manner.
3. The asphalt ductility tester as set forth in claim 2, characterized in that: rectangular hole (31) have been seted up to the both sides of sliding block (3), the bottom mounting of cell body (1) has dead lever (13) of passing rectangular hole (31), and threaded connection has nut (32) with sliding block (3) butt on dead lever (13).
4. The asphalt ductility tester as set forth in claim 1, characterized in that: the test die (4) comprises an end die (41) and a middle die (42), the number of the end die (41) and the number of the middle die (42) are two, the test die (4) is formed by splicing the end die (41) and the middle die (42), and connecting rods (424) are fixed on two sides of the middle die (42).
5. The asphalt ductility tester as set forth in claim 4, characterized in that: insertion grooves (411) are formed in two sides of the end die (41), and insertion blocks (423) inserted into the insertion grooves (411) are fixed on the middle die (42).
6. The asphalt ductility tester as set forth in claim 4, characterized in that: one side of the middle die (42) close to each other is respectively fixed with a protruding block (421) and provided with a groove (422), and the protruding block (421) can be inserted into the groove (422).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811583704.0A CN109580334B (en) | 2018-12-24 | 2018-12-24 | Asphalt ductility tester and application method thereof |
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| CN201811583704.0A CN109580334B (en) | 2018-12-24 | 2018-12-24 | Asphalt ductility tester and application method thereof |
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| CN109580334A CN109580334A (en) | 2019-04-05 |
| CN109580334B true CN109580334B (en) | 2021-12-14 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782008B (en) * | 2020-12-25 | 2022-12-16 | 铁正检测科技有限公司 | Intelligence modified asphalt ductility detection device |
| CN117405523B (en) * | 2023-12-14 | 2024-02-20 | 山东鲁中公路市政检测有限公司 | Highway construction asphalt extensibility detection device and method |
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| CN101281107B (en) * | 2008-05-16 | 2010-07-07 | 东南大学 | Bituminous cement force measuring ductility test method |
| CN102183421B (en) * | 2011-03-11 | 2012-07-25 | 常熟市高思达仪器设备有限公司 | Asphalt ductility tester |
| CN205665123U (en) * | 2016-06-08 | 2016-10-26 | 南京快联路桥建设工程有限公司 | Pitch low temperature elongation apparatus |
| CN206450492U (en) * | 2017-01-23 | 2017-08-29 | 成都理工大学 | Bitumen ductility die trial |
| CN207197962U (en) * | 2017-07-17 | 2018-04-06 | 厦门市交通建设工程检测有限公司 | Pitch ductility analyzer |
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| KR20050013424A (en) * | 2003-07-28 | 2005-02-04 | 주식회사 포스코 | A water bath for reaction beaker |
| CN203140034U (en) * | 2013-04-12 | 2013-08-21 | 宁波立华植物提取技术有限公司 | Heating bath pan |
| CN107497513A (en) * | 2017-09-26 | 2017-12-22 | 成都元始信息科技有限公司 | A kind of constant water bath box with agitating device |
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