CN201181292Y - Asphalt mixture workability index tester - Google Patents
Asphalt mixture workability index tester Download PDFInfo
- Publication number
- CN201181292Y CN201181292Y CNU2008200333724U CN200820033372U CN201181292Y CN 201181292 Y CN201181292 Y CN 201181292Y CN U2008200333724 U CNU2008200333724 U CN U2008200333724U CN 200820033372 U CN200820033372 U CN 200820033372U CN 201181292 Y CN201181292 Y CN 201181292Y
- Authority
- CN
- China
- Prior art keywords
- asphalt
- stirrer
- workability index
- workability
- asphalt mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 67
- 239000000203 mixture Substances 0.000 title abstract 6
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
Abstract
The utility model relates to an asphalt mixture workability index tester contains frame, variable speed motor, digital display screen, torque sensor and sample bucket, is equipped with by motor drive's agitator in the sample bucket, and the agitator is equipped with stirring vane, and variable speed motor passes through the main shaft of reduction gear and agitator and links to each other, and torque sensor installs on the main shaft of agitator or on reduction gear output shaft, and the wall portion of sample bucket is equipped with heating chamber and temperature sensor, is equipped with temperature sensor on the stirring vane. The tester takes the reciprocal value of the torque generated when the asphalt mixture is stirred as the workability index of the asphalt mixture. The asphalt mixture is heated and stirred in the sample barrel, and the workability index and the temperature data are displayed on a display screen through a data acquisition and display system, so that the optimal mixing and compacting temperature of the asphalt mixture is determined through the quantitative value of the workability index.
Description
Technical field
The utility model relates to a kind of workability index tester of the asphalt that is used to pave the way.
Background technology
At present, highway construction adopts asphalt to be laid immediately in the basic unit more, carries out compacting by the street roller tool of special use then and forms the road surface.
Asphalt is generally formed with the certain proportion batching and being heated to mix under the uniform temperature by gathering materials of not waiting of thickness, filler and asphaltic liquid.The workability of asphalt is to characterize the essential characteristic that it paves and rolls performance, is directly connected to important quality index such as the flatness of bituminous pavement and compactness.The workability of asphalt mix and stir with it and compacting temperature relevant, therefore, need to determine that by test it mixes and stirs and compacting temperature to the asphalt workability.Up to the present, do not have quantizating index for asphalt workability quality, come Indirect evaluation by density, the voidage size of measuring asphalt mostly, this method can not reflect the truth of asphalt workability fully, can not determine that more the best of asphalt is mixed and stirred and compacting temperature.At present, paving engineering medium pitch compound the best mix and stir and compacting temperature utilizes the viscosity-temperature curve of pitch to determine usually simply, promptly by the pairing temperature value of optimum viscosity value of viscosity-temperature curve medium pitch be defined as asphalt the best mix and stir and compacting temperature.Yet, because the coefficient results of numerous factors such as the workability of asphalt is the pitch kind, the kind of gathering materials, grating type and temperature, the asphalt viscosity value only is one of influence factor of asphalt workability, for the identical inhomogeneity asphalt of voidage, in fact its workability is also inequality, therefore, only determine that by the pitch viscosity-temperature curve asphalt mixes and stirs temperature and comes the workability quality of Indirect evaluation asphalt to have irrationality with the voidage size.The utility model just is based on that present present situation carries out.
The utility model content
The purpose of this utility model provides a kind of asphalt workability index tester device, when being stirred, stirs asphalt the test of main-shaft torque, reciprocal value with moment of torsion is the workability index of asphalt, so that determine the suitable temperature of mixing and stirring and pave of asphalt by this quantized value of workability index.
This asphalt workability index tester comprises frame, variable-speed motor, digital display screen, torque sensor and sample bucket, be provided with in the sample bucket by motor-driven stirrer, stirrer is provided with stirring vane, said variable-speed motor links to each other with the main shaft of stirrer by speed reduction unit, said torque sensor is installed on the main shaft or reducer output shaft of stirrer, the wall portion of sample bucket is provided with heating chamber and temperature sensor, and temperature sensor is housed on the stirring vane.
Be provided with shaft coupling between motor and the speed reduction unit.
Be provided with shaft coupling between stirrer main shaft and the speed reduction unit.
Said stirrer is provided with axially equidistant and radially waits radian three stirring vanes in upper, middle and lower at interval, wherein:
The blade face of blade becomes 130-140 ° of angle direction to install with the tangent line of main axis rotation direction, can force sample bucket top asphalt to move downward like this.
The blade face of middle blade becomes vertical direction to install with the tangent line of main axis rotation direction, and the blade face forms radially curved arc to the sense of rotation bending, purpose is to avoid asphalt to produce segregation, prevent that the bulky grain aggregate from moving to the sample barrel edge, guarantee that bulky grain aggregate and other aggregate evenly also mix and stir continuously.
The blade face of lower blade becomes 40-50 ° of angle direction to install with the tangent line of main axis rotation direction, can stir the asphalt of sample bucket bottom like this, reaches the purpose that asphalt fully mixes and stirs.
Three stirring vanes adopt the variant elevations angle, form shear surface in the time of can avoiding each blade to stir in asphalt, cause to stir inhomogeneous and can not truly reflect the situation of the workability of asphalt.
During with this instrument test, in the sample bucket, drop into the asphalt sample, and, compound is heated up by oil bath heating in the heating chamber; Starter motor, the rotation of drive stirrer, when stirring asphalt, stirrer produces moment of torsion, the size of moment of torsion has characterized the quality of asphalt workability, the utility model is defined as the workability index with the inverse of torque value, moment of torsion is big more, and the workability index is more little, represents that then the workability of asphalt is poor more.Torque sensor converts the torque signal of gathering to electric signal and also by the data acquisition display system workability index (reciprocal value of moment of torsion) is presented on the screen, also shows the temperature of the interior asphalt of bucket of this moment simultaneously by temperature sensor.Therefore, this instrument can directly carry out the asphalt workability to be measured, and analyzes the influence of factors such as pitch kind, the kind of gathering materials, grating type and temperature to the asphalt workability.The workability exponential quantity that records according to this instrument determines that asphalt the best mixes and stirs and compacting temperature, can overcome the deficiency of conventional Indirect evaluation method.
Description of drawings
Fig. 1 is the structural representation of the workability index tester of asphalt.
Fig. 2 represents that the A of sample bucket is to sectional view.
Fig. 3 represents the radial distribution synoptic diagram of three stirring vanes on the stirrer main shaft.
Fig. 4-Fig. 6 respectively presentation graphs 3 B to, C to D to view.
Each parts label is among Fig. 1-Fig. 6: 1-frame, 2-display screen, 3-change speed motor, 4,4 '-shaft coupling, 5-speed reduction unit, 6-torque sensor, 7-sample handle for bucket hand, 8-stirrer main shaft, 9-sample bucket location otic placode, the 9-1-screw, 10-sample bucket, 11-heating chamber, the 12-blade, blade among the 13-, 14-lower blade, 15-temperature sensor.
The instantiation mode
Further specify the example structure of this tester below by accompanying drawing.
Among Fig. 1 embodiment, frame 1 is not less than the rigid metal framework of 5KN for bearing capacity.Display screen 2, variable-speed motor 3, speed reduction unit 5 and sample bucket 10 are workbench with this frame 1 all.Be equipped with temperature sensor 15 in the blade 12 of stirrer, middle blade 13 and the lower blade 14, the longitudinal pitch between each blade is 3 centimetres.Variable-speed motor 3 is provided with two grades of rotating speeds, is respectively 10 rev/mins, 15 rev/mins; Torque sensor 8 is housed on the output shaft of speed reduction unit 5; Speed reduction unit 5 and variable-speed motor 3 and with stirrer main shaft 8 between link to each other with 4 ' with shaft coupling 4 respectively.
As Fig. 2, sample bucket 10 is provided with a pair of handle that is used to guide and support 7 and a pair of otic placode of being convenient in frame 1 installing and locating 9, is connected location with bolt with frame 1 by the screw 9-1 on the otic placode 9.Sample bucket 10 contains oil bath heating chamber 11, and temperature sensor is equipped with in wall portion.
Sample bucket 10 is by the oil bath heating of heating chamber 11, and thermal capacitance is long-pending big, efficiency of heating surface height, homogeneous heating.The sensor test temperature is carried out gradient of temperature and displays temperature value according to testing requirements.
The temperature of asphalt is carried out real-time testing and collection by the temperature sensor on the paddle 15 in the bucket, and data acquiring frequency is per second 50 times.
Fig. 3 represents that three blades 12,13,14 of stirrer radially wait radian to distribute on stirrer main shaft 8; Fig. 4 represents that blade 12 becomes 135 ° of angles with the tangent line of stirrer main shaft 8 sense of rotation; Blade 13 became 90 ° of angles with the tangent line of stirrer main shaft 6 sense of rotation during Fig. 5 represented, there is a radian to the sense of rotation bending on its blade face; Fig. 6 represents the tangent line angle at 45 of lower blade 14 and stirrer main shaft 8 sense of rotation.Long 17 centimetres of blade, wide 2.5 centimetres, 19 centimetres of middle period lengths of a film, wide 2 centimetres, 17 centimetres of inferior lobe lengths of a film, wide 2.5 centimetres.
Torque sensor 6 is sleeve type spares of outsourcing, is directly installed on the reducer output shaft by torsion coupling, and the torque measurement range is at 20～80 Ns of rice, and precision reaches ± 0.1 N of rice.
Provide below with this tester asphalt is carried out workability index test implementation example.The tested AC13 (bitumen aggregate ratio is 5%) and the starting material of two kinds of asphalts of AC20 (bitumen aggregate ratio is 4.3%) all are 70 among the embodiment
#Matrix pitch and limestone aggregates.
Real examination example 1
Workability index test under AC13 asphalt different rotating speeds and the condition of different temperatures
The tester rotating speed is respectively under the condition of 10 rev/mins and 15 rev/mins, and the different temperatures of AC13 asphalt and workability index variation relation see Table 1 (1) and table 1 (2) respectively.
Table 1 (1)
Table 1 (2)
Table 1 (1) and table 1 (2) test result show, stirrer is under 10 rev/mins and 15 rev/mins of two grades of rotating speeds, and along with temperature raises, asphalt workability index increases, and the asphalt workability strengthens.After temperature surpasses 135 ℃, continue rising asphalt temperature, asphalt workability index increasing degree is very little, almost constant, can determine that thus the best compacting temperature of this asphalt is 135 ℃, and with the workability index of 135 ℃ of correspondences as asphalt workability Control Indexes in Construction.
Real examination example 2
Two kinds of asphalts of AC13 and AC20 all adopt 15 rev/mins speed of agitator, test the workability index under its different temperatures respectively.
The test result of AC13 asphalt such as table 2 (1), the test result of AC20 asphalt such as table 2 (2).
Table 2 (1)
Table 2 (1) and table 2 (2) test findings show that under uniform temp, it is thick more to gather materials, and compound workability index is more little, and rammability is poor more.For the AC13 asphalt, after temperature is higher than 135 ℃ the workability index variation very little, can be with 135 ℃ of best compacting temperatures as the AC13 asphalt.For the AC20 asphalt, after temperature is higher than 140 ℃ the workability index variation very little, can be with 140 ℃ of best compacting temperatures as the AC20 asphalt.Therefore in work progress, for guaranteeing construction quality, should improve coarse aggregate asphalt compacting temperature, this conclusion and actual conditions are coincide.
Claims (4)
1. the workability index tester of asphalt, it is characterized in that comprising frame, variable-speed motor, digital display screen, torque sensor and sample bucket, be provided with in the sample bucket by motor-driven stirrer, stirrer is provided with stirring vane, said variable-speed motor links to each other with the main shaft of stirrer by speed reduction unit, said torque sensor is installed on the main shaft or reducer output shaft of stirrer, and the wall portion of sample bucket is provided with heating chamber and temperature sensor, and temperature sensor is housed on the stirring vane.
2. the workability index tester of asphalt according to claim 1 is characterized in that said stirrer is provided with axially equidistant reaching and radially waits radian three stirring vanes in upper, middle and lower at interval, wherein:
The blade face of blade becomes 130-140 ° of angle direction to install with the tangent line of main axis rotation direction,
The blade face of middle blade becomes vertical direction to install with the tangent line of main axis rotation direction,
The blade face of lower blade becomes 40-50 ° of angle direction to install with the tangent line of main axis rotation direction.
3. the workability index tester of asphalt according to claim 1 and 2 is characterized in that being provided with shaft coupling between motor and the speed reduction unit.
4. the workability index tester of asphalt according to claim 3 is characterized in that being provided with shaft coupling between stirrer main shaft and the speed reduction unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200333724U CN201181292Y (en) | 2008-03-28 | 2008-03-28 | Asphalt mixture workability index tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200333724U CN201181292Y (en) | 2008-03-28 | 2008-03-28 | Asphalt mixture workability index tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181292Y true CN201181292Y (en) | 2009-01-14 |
Family
ID=40250791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200333724U Expired - Lifetime CN201181292Y (en) | 2008-03-28 | 2008-03-28 | Asphalt mixture workability index tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201181292Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825591A (en) * | 2010-05-28 | 2010-09-08 | 长安大学 | Press bearing time tester for asphalt mixture and test method thereof |
| CN101251529B (en) * | 2008-03-28 | 2011-02-02 | 南京工业大学 | Asphalt mixture workability index tester |
| CN103543254A (en) * | 2013-10-21 | 2014-01-29 | 长安大学 | Asphalt mixture loose performance index tester and test method thereof |
| CN107128644A (en) * | 2016-02-29 | 2017-09-05 | 王腊俊 | A kind of scraper reclaimer claw with digital display humidity of materials and temperature function |
| CN111060680A (en) * | 2019-12-09 | 2020-04-24 | 同济大学 | Workability testing device and workability evaluation method for asphalt mixture |
| CN114378076A (en) * | 2021-11-11 | 2022-04-22 | 江苏军曼农业科技有限公司 | Duck cage self-cleaning system for live breeding ducks |
| CN115184258A (en) * | 2022-09-07 | 2022-10-14 | 中铁三局集团第三工程有限公司 | Cold-recycling asphalt mixture workability evaluation equipment and evaluation method thereof |
-
2008
- 2008-03-28 CN CNU2008200333724U patent/CN201181292Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251529B (en) * | 2008-03-28 | 2011-02-02 | 南京工业大学 | Asphalt mixture workability index tester |
| CN101825591A (en) * | 2010-05-28 | 2010-09-08 | 长安大学 | Press bearing time tester for asphalt mixture and test method thereof |
| CN101825591B (en) * | 2010-05-28 | 2011-07-27 | 长安大学 | Rolling time tester for asphalt mixture and test method thereof |
| CN103543254A (en) * | 2013-10-21 | 2014-01-29 | 长安大学 | Asphalt mixture loose performance index tester and test method thereof |
| CN103543254B (en) * | 2013-10-21 | 2016-01-20 | 长安大学 | A kind of asphalt loose performance index determining instrument and assay method thereof |
| CN107128644A (en) * | 2016-02-29 | 2017-09-05 | 王腊俊 | A kind of scraper reclaimer claw with digital display humidity of materials and temperature function |
| CN111060680A (en) * | 2019-12-09 | 2020-04-24 | 同济大学 | Workability testing device and workability evaluation method for asphalt mixture |
| CN111060680B (en) * | 2019-12-09 | 2022-01-25 | 同济大学 | Workability testing device and workability evaluation method for asphalt mixture |
| CN114378076A (en) * | 2021-11-11 | 2022-04-22 | 江苏军曼农业科技有限公司 | Duck cage self-cleaning system for live breeding ducks |
| CN114378076B (en) * | 2021-11-11 | 2022-12-20 | 江苏军曼农业科技有限公司 | Duck cage self-cleaning system for live breeding ducks |
| CN115184258A (en) * | 2022-09-07 | 2022-10-14 | 中铁三局集团第三工程有限公司 | Cold-recycling asphalt mixture workability evaluation equipment and evaluation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101251529B (en) | Asphalt mixture workability index tester | |
| CN201181292Y (en) | Asphalt mixture workability index tester | |
| CN104297294A (en) | Asphalt mixture workability detection device based on stirring current value and detection method | |
| CN203053821U (en) | Bituminous mixture workability test instrument | |
| CN106830765B (en) | A kind of asphalt mixing method | |
| He et al. | Investigation of the physical and rheological properties of Trinidad lake asphalt modified bitumen | |
| CN103344526B (en) | A kind of asphalt workability index tester and method of testing | |
| CN106474973B (en) | Fiber asphalt mortar mixing uniformity self-inspection device and method | |
| CN100582737C (en) | Method for testing interaction capacity of asphaltum and aggregate | |
| Diab | Studying viscosity of asphalt binders and effect of varied production temperatures on engineering properties of hot mix asphalt mixtures | |
| CN105842121B (en) | Asphalt based on wetting theory most preferably mixes and stirs temperature determining method | |
| CN203965437U (en) | Novel emulsion asphalt mixing time tester | |
| CN104833704A (en) | Bituminous mixture variable-speed stirrer, power testing device and power testing method | |
| CN104090093A (en) | Novel emulsified asphalt mixing time tester | |
| CN207908302U (en) | A kind of asphalt bonding lubrication test device of adjustable speed | |
| CN202247607U (en) | Screening and measuring device for detecting asphalt mixture | |
| CN201689017U (en) | Torsion tester for workability of asphalt mixture | |
| CN111157707B (en) | Method and device for measuring migration degree of old mineral aggregate of hot recycled asphalt mixture | |
| CN201293782Y (en) | Test device for hot mixing asphalt mixture operational property | |
| CN106289682A (en) | A kind of evaluate Colophonium and the method and application thereof wrapping up in attached property of gathering materials | |
| CN111060680B (en) | Workability testing device and workability evaluation method for asphalt mixture | |
| CN204398137U (en) | A kind of small indoor stabilized with inorganic binder material mixer | |
| CN205719865U (en) | A kind of test device for hot mixing asphalt mixture operational property | |
| CN213142710U (en) | Novel fiber asphalt mucilage mixer | |
| Mignini et al. | Rheological characterisation of cold bitumen emulsion slurries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090114 Effective date of abandoning: 20080328 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090114 Effective date of abandoning: 20080328 |