CN111307711A - Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion - Google Patents
Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion Download PDFInfo
- Publication number
- CN111307711A CN111307711A CN202010331241.XA CN202010331241A CN111307711A CN 111307711 A CN111307711 A CN 111307711A CN 202010331241 A CN202010331241 A CN 202010331241A CN 111307711 A CN111307711 A CN 111307711A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- aggregate
- connecting plate
- adhesion
- transverse connecting
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device for quantitatively testing the adhesion of asphalt and aggregate based on interface adhesion, which comprises a body, a loading system, an electric power storage system and a data acquisition system, wherein the loading system is connected with the loading system; the body comprises a transverse connecting plate and a vertical support; the loading system comprises a working oil pump, a miniature hydraulic jack and a handle, the electric power storage system comprises a rechargeable storage battery, and the data acquisition system comprises a data storage and an embedded digital display instrument. The invention also provides a method for quantitatively testing the adhesiveness of asphalt and aggregate by using the device. The method can quickly and conveniently realize quantitative test and evaluation on the adhesiveness of the asphalt and the aggregate, objectively and truly reflect the adhesiveness of the asphalt and the aggregate, avoid the influence caused by the size and shape difference of the aggregate sample, form more uniform test conditions, and be more beneficial to the transverse comparison and scheme selection of different aggregates. The testing device is small and portable, has simple principle and simple and easy operation, and has wide application prospect.
Description
Technical Field
The invention relates to a method for testing asphalt performance in the technical field of road engineering, in particular to a device and a method for quantitatively testing the adhesion of asphalt and aggregate based on interface adhesion.
Background
Asphalt mixture is one of the most widely used pavement materials in road traffic construction, and is a composite material of stone, asphalt and the like with different material characteristics. The adhesiveness of asphalt and aggregate is an important technical index for long-term durability of asphalt pavement, and is one of the items that must be detected in material design. Insufficient adhesion can lead to cracking or delamination at the asphalt-stone interface. Fracture mechanics can be used to characterize effective resistance and predict the effects of durability and adhesion. When initial cracks or defects exist, cracks are generated and developed at the interface of asphalt and aggregate under the action of ultimate load.
At present, an adhesion test mainly refers to a method of T0616 in road engineering asphalt and asphalt mixture test regulations (JTG E20-2011), a test result is based on manual observation of aggregate surface asphalt peeling conditions, and different testers have difficult unification of discrimination standards, are very subjective and are difficult to avoid causing errors to the authenticity of the test. Therefore, the technical index testing method is also always disputed by road workers.
Based on the above, many road workers are also actively developing a test method for evaluating the adhesiveness of asphalt with aggregate. For example, patent application No. cn201610044732.x discloses a method for quantitatively analyzing the adhesion between asphalt and aggregate, and the adhesion is evaluated by testing the quality loss of asphalt mixture after high-temperature water bath; patent application No. CN201610663211.2 proposes a method for evaluating the adhesiveness of aggregate-asphalt by mass loss rate; the invention patent application with the patent application number of CN201810974280.4 provides a cold patch asphalt adhesion test and quantitative evaluation method, and the adhesion performance is evaluated through the surface coating rate; the invention patent with the patent application number of CN201410313230.3 provides an improved asphalt mixture adhesiveness tester and a method thereof, and develops an adhesiveness device and a testing method thereof. Therefore, on the basis of the current standard, a plurality of technical schemes with reference value are provided for asphalt and aggregate adhesion testing and evaluating methods and road workers, and due to the wide variation range of the binding force and the rheological property of asphalt filler, a testing device and a testing method capable of representing the adhesion between any asphalt and aggregate when the asphalt and the aggregate are combined are valuable to researchers, contractors and industrial institutions interested in asphalt materials.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the device for quantitatively testing the adhesiveness of the asphalt and the aggregate based on the interface adhesion.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a device for quantitatively testing the adhesiveness of asphalt and aggregate based on interface adhesion, which comprises a body, a loading system, an electric power storage system and a data acquisition system, wherein the loading system is connected with the loading system;
the body comprises a horizontal connecting plate and vertical supports which are respectively connected with the two sides of the horizontal connecting plate, so that the front surface of the body is in a shape of a Chinese character 'men';
the loading system comprises a working oil pump, a miniature hydraulic jack and a handle, the miniature hydraulic jack is arranged in the transverse connecting plate, the working oil pump is arranged on the upper surface of the transverse connecting plate, and the handle is arranged on the side surface of the transverse connecting plate; the working oil pump, the handle and the micro hydraulic jack are connected in sequence through a hydraulic oil pipe;
the transverse connecting plate is provided with a transmission shaft, the working oil pump is arranged in the center of the transverse connecting plate, the upper end of the transmission shaft penetrates through the transverse connecting plate and the working oil pump and is in threaded connection with the working oil pump and a fixing nut positioned on the working oil pump, the tail part of the lower end of the transmission shaft is connected with a universal joint, and the lower end of the universal joint is connected with a pull rod; the lower part of the pull rod is of a hollow structure, the inner wall of the lower part of the pull rod is provided with internal threads, and the threads are connected with a drawing clamp; a dynamometer is arranged in the transverse connecting plate and between the transmission shafts;
the lower parts of the inner sides of the 2 vertical supports are symmetrically provided with clamping grooves, spring clamps are arranged at the bottoms of the clamping grooves, transverse clamping plates are detachably arranged among the 2 vertical supports, and the two sides of each transverse clamping plate are respectively clamped by the tops of the 2 clamping grooves and the 2 spring clamps; a circular hole with the diameter of 50mm is formed in the center of the transverse clamping plate and is positioned right below the drawing clamp;
the data acquisition system comprises a data storage and a digital display instrument, and the digital display instrument is respectively and electrically connected with the dynamometer and the data storage; the data memory is embedded in the transverse connecting plate, and the digital display instrument is embedded in the upper surface of the transverse connecting plate;
the electric power storage system comprises a rechargeable storage battery embedded in the transverse connecting plate, and a USB charging interface and a power switch of the rechargeable storage battery are also arranged on the side surface of the transverse connecting plate; the rechargeable storage battery is respectively and electrically connected with the dynamometer, the digital display instrument and the data storage device.
Preferably, the vertical support has a width of 200-250mm, a height of 300-400mm and a thickness of 20-25 mm.
Preferably, the drawing clamp comprises a drawing rod and a circular plate welded with the bottom of the drawing rod, and the diameter of the circular plate is 40-48 mm; the outer surface of the pull rod is provided with external threads which can be connected with the threads at the lower part of the pull rod.
Preferably, the transverse connecting plate is equal to the vertical support in width, length of 250-300mm and thickness of 80-100 mm.
Preferably, one end of the spring clamp is fixedly connected with the bottom of the clamping groove, and the other end of the spring clamp can freely stretch and move.
The invention also provides a method for quantitatively testing the adhesiveness of asphalt and aggregate by using the device, which comprises the following steps:
(1) processing the aggregate parent rock into a cylindrical sample with the diameter of 60mm or a square sample with the diameter of 60mm, cleaning the sample, and standing at room temperature for at least 12 h;
(2) placing the dehydrated asphalt into an oven, and keeping the dehydrated asphalt at the temperature of 110-180 ℃ for at least 4h, wherein the specific heating temperature is determined according to the type of the asphalt;
(3) taking 10g of the asphalt in the step (2), uniformly spreading the asphalt on the top surface of the sample in the step (1), and naturally air-drying at room temperature for at least 2h to obtain a test piece;
(4) and bonding the bottom of the drawing clamp and the top of the test piece by using high-strength glue, and placing for not less than 12 hours at room temperature.
(5) Placing the test piece bonded with the drawing clamp in a thermostat with the temperature of 20-60 ℃ for heat preservation for not less than 4h, and then enabling the upper part of the drawing clamp to penetrate through a circular hole to be in threaded connection with the lower part of the pull rod, so that the transverse clamping plate is positioned above the test piece;
(6) shaking the handle to uniformly load, starting the working oil pump, driving the transmission shaft to uniformly rise by the miniature hydraulic jack, transmitting load data to the digital display instrument by the dynamometer under the pressure in the axial direction of rotation, clamping the test piece by the round hole to prevent the test piece from being driven to rise, and controlling the displacement speed of the transmission shaft to be 5-10 mm/min;
(7) when the drawing clamp is completely separated from the test piece, reading the maximum load value through a digital display instrument, namely the interface bonding force F1 of the asphalt and aggregate test piece;
(8) repeating the steps (1) to (6)4 times by using the same asphalt and the same aggregate to obtain F2, F3, F4 and F5, wherein the interface binding force F is the arithmetic mean of 5 values.
(9) Calculating the interfacial bond strength of the asphalt to the aggregate according to the formula:
P＝F/A
wherein, P is the interface bonding strength (MPa) and is accurate to 0.01 MPa; f is the interfacial adhesion (N); a is the interface contact area (mm)2)。
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the method can realize quantitative test and evaluation on the adhesiveness of the asphalt and the aggregate, and overcomes the defects of uncertain evaluation index and large influence of human factors when the adhesiveness of the asphalt and the coarse aggregate is represented by a boiling method; the defects of non-uniform discrimination standard, strong subjectivity and the like existing in the existing standard of manually observing the asphalt stripping area on the aggregate surface for grade evaluation are overcome. The adhesion between the asphalt and the aggregate parent rock can be objectively and truly reflected by taking the adhesion between the asphalt and the aggregate parent rock as a quantitative index. In addition, before the asphalt is sprayed and paved, one surface of the test piece, which is in contact with the asphalt, is roughened, the roughness of the test piece is adjusted, the working condition of adhesion of aggregates with different particle sizes and the asphalt can be truly simulated, and the obtained data is more comprehensive.
2. By adopting the relatively uniform test piece of the aggregate parent rock to test and evaluate the adhesiveness of the aggregate parent rock and the asphalt, the influence caused by the size and shape difference of the aggregate sample is avoided, more uniform test conditions are formed, and the transverse comparison and scheme selection of different aggregates are facilitated. The tested test piece can adopt aggregate parent rock or aggregate test pieces made of materials with different grades, and the applicability is wide.
3. The testing device is small and portable, simple in principle, easy to operate and high in popularization.
In conclusion, the method can be used for rapidly and conveniently detecting and analyzing the adhesion performance of the asphalt and the aggregate/aggregate mother rock, is simple, can be used for obtaining accurate data, quantitatively analyzing and comparing the adhesion performance of the asphalt and different aggregate/aggregate mother rocks, is particularly suitable for large-scale production and scientific research needs, and has wide application prospects.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a front view of the apparatus of the present invention;
FIG. 3 is an enlarged partial view of the pulling fixture of the apparatus of the present invention.
The attached drawings are as follows: the device comprises a vertical support, a 2-USB charging interface, a 3-digital display instrument, a 4-transverse connecting plate, a 5-fixing nut, a 6-transmission shaft, a 7-working oil pump, an 8-force measuring instrument, a 9-universal joint, a 10-pull rod, a 11-handle, a 12-spring clamp, a 13-clamping groove, a 14-transverse clamping plate, a 15-round hole, a 16-drawing clamp, a 17-drawing rod, an 18-round plate, a 19-cylindrical test piece and a 20-micro hydraulic jack.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
An apparatus and a method for quantitatively testing the adhesion of asphalt and aggregate based on interfacial adhesion, the apparatus has the following structure:
the device comprises a body made of light alloy material, a loading system, an electric power storage system and a data acquisition system;
the body comprises a horizontal connecting plate 4 and vertical supports 1 which are respectively connected with two sides of the horizontal connecting plate 4, so that the front surface of the body is in a shape of a Chinese character 'men'; the transverse connecting plate 4 is 250mm long, 200mm wide and 80mm thick; the vertical support 1 is 200mm wide, 300mm high and 25mm thick;
the loading system comprises a working oil pump 7, a micro hydraulic jack 20 and a handle 11, wherein the micro hydraulic jack 20 is arranged in the transverse connecting plate 4, the working oil pump 7 is arranged on the upper surface of the transverse connecting plate 4, and the handle 11 is arranged on the side surface of the transverse connecting plate 4; the working oil pump 7, the handle 11 and the micro hydraulic jack 20 are connected in sequence through hydraulic oil pipes;
the device is characterized in that a transmission shaft 6 is arranged on the transverse connecting plate 4, a working oil pump 7 is arranged in the center of the transverse connecting plate 4, the upper end of the transmission shaft 6 penetrates through the transverse connecting plate 4 and the working oil pump 7 and is in threaded connection with the working oil pump 7 and a fixing nut 5 positioned on the working oil pump 7, the tail part of the lower end of the transmission shaft 6 is connected with a universal joint 9, and the lower end of the universal joint 9 is connected with a pull rod 10 with the diameter of 24 mm; the lower part of the pull rod 10 is of a hollow structure, the hollow structure is a cylindrical recess with the inner diameter of 12mm, the inner wall of the hollow structure is provided with internal threads, the hollow structure is in threaded connection with a drawing clamp 16, the drawing clamp 16 comprises a drawing rod 17 with the outer diameter of 12mm and a circular plate 18 which is welded with the bottom of the drawing rod 17 and has the diameter of 40mm and the thickness of 10mm, external threads are arranged on the outer surface of the drawing rod 17, and the drawing rod 17 can be in threaded connection with the lower part of the pull rod 10; a force measuring instrument 8 is arranged in the transverse connecting plate 4 and between the transmission shafts 6, and the measuring range of the force measuring instrument 8 adopted in the embodiment is 0-20 kN;
clamping grooves 13 with the width of 50mm and the depth of 10mm are symmetrically arranged at positions 100mm away from the ground on the inner sides of the 2 vertical supports 1, spring clamps 12 are arranged at the bottoms of the clamping grooves 13, the lower ends of the spring clamps 12 are fixedly connected with the bottoms of the clamping grooves 13, the upper ends of the spring clamps can freely stretch and move, transverse clamping plates 14 are detachably arranged among the 2 vertical supports 1, the transverse clamping plates 14 are 270mm long, 120mm wide and 10mm thick, and the two sides of each transverse clamping plate 14 are respectively clamped by the tops of the 2 clamping grooves 13 and the 2 spring clamps 12; a circular hole 15 with the diameter of 50mm is formed in the center of the transverse clamping plate 14, and the circular hole 15 is located right below the drawing clamp 16;
the data acquisition system comprises a data storage and a digital display instrument 3, wherein the digital display instrument 3 is respectively and electrically connected with the dynamometer 8 and the data storage; the data memory is embedded in the transverse connecting plate 4, and the digital display instrument 3 is embedded in the upper surface of the transverse connecting plate 4; the digital display instrument 4 adopted by the embodiment is a screen touchable digital display instrument;
the electric power storage system comprises a rechargeable storage battery embedded in the transverse connecting plate, and the side surface of the transverse connecting plate is also provided with a USB charging interface 2 and a power switch of the rechargeable storage battery; the rechargeable storage battery is respectively and electrically connected with the dynamometer 8, the digital display instrument 3 and the data storage device.
The method for quantitatively testing the adhesiveness of the asphalt and the aggregate by using the device comprises the following specific steps:
(1) processing the basalt aggregate parent rock into a cylindrical sample with the diameter of 60mm, cleaning the sample, and standing for 12 hours at room temperature;
(2) putting the dehydrated 70# matrix asphalt into an oven, and keeping the temperature at 120 ℃ for 4 hours;
(3) taking 10g of the asphalt in the step (2), uniformly spraying the asphalt on the top surface of the sample in the step (1), and naturally drying for 2 hours at room temperature to obtain a test piece 19;
(4) coating a layer of high-strength glue between the bottom of the circular plate 18 and the top of the test piece 19 to bond the circular plate 18 and the test piece 19, so that the circular plate 18 is positioned in the center of the top of the test piece 19; standing at room temperature for 12 h.
(5) Placing the test piece bonded with the drawing clamp in a thermostat at 20 ℃ for heat preservation for 4h, and then upwards penetrating a drawing rod 17 through a round hole 15 to be in threaded connection with the lower part of a pull rod 10, so that a transverse clamping plate 14 is positioned above a test piece 19;
(6) inputting the serial number of a test piece 19 on a touch screen of the digital display instrument 2, shaking a handle 11 for uniform loading, driving a transmission shaft 6 to uniformly ascend by a micro hydraulic jack 20, clamping the test piece 19 by a round hole 15 to prevent the test piece from being driven to ascend, controlling the displacement speed of the transmission shaft 6 to be 10mm/min, and displaying the serial number of the test piece 19, the load of a dynamometer 8 and the displacement speed of the transmission shaft 6 by the digital display instrument 3 in real time;
(7) after the drawing clamp 16 is completely separated from the test piece 19, reading the maximum load value through the digital display instrument 3, namely the interface adhesive force F1 of the asphalt and the test piece 19;
(8) repeating the steps (1) to (6)4 times by using the same asphalt and the same aggregate to obtain F2, F3, F4 and F5, wherein the interface binding force F is the arithmetic mean of 5 values.
(9) The interfacial bond strength of the asphalt to the aggregate specimen 19 was calculated according to the following formula:
P＝F/A
wherein, P is the interface bonding strength (MPa) and is accurate to 0.01 MPa; f is the interfacial adhesion (N); a is the interface contact area (mm)2)。
The working oil pump 7, the dynamometer 8, the digital display instrument 3, the data storage device and the micro hydraulic jack 20 adopted by the invention are all existing equipment.
The adhesion of various types of aggregate to # 70 base asphalt was tested using the apparatus and test method of example 1 and the results are shown in table 1. (in addition to No. 70 asphalt, No. 50 and No. 90 base asphalt, SBS modified asphalt, rubber modified asphalt, etc. can be selected for testing)
TABLE 1
| Adhesive force | Limestone | Basalt rock | Diabase (glauconite) | Granite |
| F1 | 1558 | 1232 | 1345 | 1093 |
| F2 | 1571 | 1307 | 1395 | 1043 |
| F3 | 1533 | 1181 | 1420 | 1106 |
| F4 | 1621 | 1294 | 1307 | 1018 |
| F5 | 1533 | 1269 | 1345 | 1005 |
| F | 1558 | 1257 | 1357 | 1056 |
| P | 1.24 | 1.00 | 1.08 | 0.84 |
It can be seen that the adhesion of different aggregates to bitumen is best for limestone, and then diabase, basalt, granite, for the same bituminous material.
Claims (6)
1. A device for quantitatively testing the adhesiveness of asphalt and aggregate based on interface adhesion is characterized by comprising a body, a loading system, an electric power storage system and a data acquisition system;
the body comprises a horizontal connecting plate and vertical supports which are respectively connected with the two sides of the horizontal connecting plate, so that the front surface of the body is in a shape of a Chinese character 'men';
the loading system comprises a working oil pump, a miniature hydraulic jack and a handle, the miniature hydraulic jack is arranged in the transverse connecting plate, the working oil pump is arranged on the upper surface of the transverse connecting plate, and the handle is arranged on the side surface of the transverse connecting plate; the working oil pump, the handle and the micro hydraulic jack are connected in sequence through a hydraulic oil pipe;
the transverse connecting plate is provided with a transmission shaft, the working oil pump is arranged in the center of the transverse connecting plate, the upper end of the transmission shaft penetrates through the transverse connecting plate and the working oil pump and is in threaded connection with the working oil pump and a fixing nut positioned on the working oil pump, the tail part of the lower end of the transmission shaft is connected with a universal joint, and the lower end of the universal joint is connected with a pull rod; the lower part of the pull rod is of a hollow structure, the inner wall of the lower part of the pull rod is provided with internal threads, and the threads are connected with a drawing clamp; a dynamometer is arranged in the transverse connecting plate and between the transmission shafts;
the lower parts of the inner sides of the 2 vertical supports are symmetrically provided with clamping grooves, spring clamps are arranged at the bottoms of the clamping grooves, transverse clamping plates are detachably arranged among the 2 vertical supports, and the two sides of each transverse clamping plate are respectively clamped by the tops of the 2 clamping grooves and the 2 spring clamps; a circular hole with the diameter of 50mm is formed in the center of the transverse clamping plate and is positioned right below the drawing clamp;
the data acquisition system comprises a data storage and a digital display instrument, and the digital display instrument is respectively and electrically connected with the dynamometer and the data storage; the data memory is embedded in the transverse connecting plate, and the digital display instrument is embedded in the upper surface of the transverse connecting plate;
the electric storage system is a rechargeable storage battery, and a USB charging interface and a power switch of the rechargeable storage battery are also arranged on the lateral surface of the transverse connecting plate; the rechargeable storage battery is respectively and electrically connected with the dynamometer, the digital display instrument and the data storage device.
2. The device for quantitatively testing the adhesion of asphalt to aggregate based on interfacial adhesion according to claim 1, wherein the vertical support has a width of 200-250mm, a height of 300-400mm and a thickness of 20-25 mm.
3. The apparatus for quantitatively testing the adhesiveness of asphalt with aggregate based on interfacial adhesion according to claim 1, wherein the drawing jig comprises a drawing bar and a circular plate welded to the bottom of the drawing bar, the circular plate having a diameter of 40-48 mm; the outer surface of the pull rod is provided with external threads which can be connected with the threads at the lower part of the pull rod.
4. The device for quantitatively testing the adhesion of asphalt to aggregate based on interfacial adhesion according to claim 1, wherein the transverse connection plate has the same width as the vertical support, the length of 250-300mm and the thickness of 80-100 mm.
5. The device for quantitatively testing the adhesiveness of asphalt and aggregate based on interfacial adhesion according to claim 1, wherein one end of the spring clamp is fixedly connected with the bottom of the clamping groove, and the other end of the spring clamp can freely stretch and move.
6. A method for quantitatively testing the adhesion of asphalt and aggregate based on interfacial adhesion, which is characterized in that the method is carried out by using the device for quantitatively testing the adhesion of asphalt and aggregate based on interfacial adhesion according to any one of claims 1 to 5; the method comprises the following specific steps:
(1) processing the aggregate parent rock into a cylindrical sample with the diameter of 60mm or a square sample with the diameter of 60mm, cleaning the sample, and standing at room temperature for at least 12 h;
(2) placing the dehydrated asphalt into an oven, and keeping the dehydrated asphalt at the temperature of 110-180 ℃ for at least 4h, wherein the specific heating temperature is determined according to the type of the asphalt;
(3) taking 10g of the asphalt in the step (2), uniformly spreading the asphalt on the top surface of the sample in the step (1), and naturally air-drying at room temperature for at least 2h to obtain a test piece;
(4) bonding the bottom of the drawing clamp and the top of the test piece by using high-strength glue, and placing for not less than 12 hours at room temperature;
(5) placing the test piece bonded with the drawing clamp in a thermostat with the temperature of 20-60 ℃ for heat preservation for not less than 4h, and then enabling the upper part of the drawing clamp to penetrate through a circular hole to be in threaded connection with the lower part of the pull rod, so that the transverse clamping plate is positioned above the test piece;
(6) shaking the handle to uniformly load, starting the working oil pump, driving the transmission shaft to uniformly rise by the miniature hydraulic jack, transmitting load data to the digital display instrument by the dynamometer under the pressure in the axial direction of rotation, clamping the test piece by the round hole to prevent the test piece from being driven to rise, and controlling the displacement speed of the transmission shaft to be 5-10 mm/min;
(7) when the drawing clamp is completely separated from the test piece, reading the maximum load value through a digital display instrument, namely the interface bonding force F1 of the asphalt and aggregate test piece;
(8) repeating the steps (1) to (6)4 times by adopting the same asphalt and the same aggregate to obtain F2, F3, F4 and F5, wherein the interface binding force F is an arithmetic average value of 5 values;
(9) calculating the interfacial bond strength of the asphalt to the aggregate according to the formula:
P＝F/A
wherein, P is the interface bonding strength, MPa, and is accurate to 0.01 MPa; f is the interfacial adhesion, N;
a is the interface contact area mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331241.XA CN111307711A (en) | 2020-04-24 | 2020-04-24 | Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331241.XA CN111307711A (en) | 2020-04-24 | 2020-04-24 | Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111307711A true CN111307711A (en) | 2020-06-19 |
Family
ID=71156009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010331241.XA Pending CN111307711A (en) | 2020-04-24 | 2020-04-24 | Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111307711A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098318A (en) * | 2020-08-20 | 2020-12-18 | 广西交科集团有限公司 | Four-ball friction test evaluation method for adhesion performance of asphalt and coarse aggregate |
| CN112415180A (en) * | 2020-12-10 | 2021-02-26 | 广西交科集团有限公司 | Method for selecting base asphalt for rubber asphalt based on ash correlation analysis |
| CN113237830A (en) * | 2021-05-25 | 2021-08-10 | 山西路桥建设集团有限公司 | Method for detecting adhesion property of asphalt-aged steel slag aggregate |
| NL2033075A (en) * | 2022-01-11 | 2023-07-13 | Univ Xian Technology | Method for testing bonding performance of interfacial transition zone between asphalt and acid-base combined aggregates |
-
2020
- 2020-04-24 CN CN202010331241.XA patent/CN111307711A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098318A (en) * | 2020-08-20 | 2020-12-18 | 广西交科集团有限公司 | Four-ball friction test evaluation method for adhesion performance of asphalt and coarse aggregate |
| CN112415180A (en) * | 2020-12-10 | 2021-02-26 | 广西交科集团有限公司 | Method for selecting base asphalt for rubber asphalt based on ash correlation analysis |
| CN112415180B (en) * | 2020-12-10 | 2021-09-10 | 广西交科集团有限公司 | Method for selecting base asphalt for rubber asphalt based on ash correlation analysis |
| CN113237830A (en) * | 2021-05-25 | 2021-08-10 | 山西路桥建设集团有限公司 | Method for detecting adhesion property of asphalt-aged steel slag aggregate |
| NL2033075A (en) * | 2022-01-11 | 2023-07-13 | Univ Xian Technology | Method for testing bonding performance of interfacial transition zone between asphalt and acid-base combined aggregates |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111307711A (en) | Device and method for quantitatively testing adhesiveness of asphalt and aggregate based on interface adhesion | |
| CN102109442B (en) | Fast test method of shearing resistance of bituminous mixture | |
| CN106771105B (en) | A method of evaluation asphaltmastic water stability | |
| Jakarni | Adhesion of asphalt mixtures | |
| CN106706422A (en) | Synchronous testing method and device for tensile modulus, compressive modulus and split modulus of pavement material | |
| CN105675419B (en) | Biconial press-in prediction material single shaft constitutive relation assay method | |
| CN211402100U (en) | Asphalt-aggregate long-term adhesion testing device | |
| CN104062190B (en) | Shearing strength detection method for new and old pavement connecting layer material | |
| CN105067435A (en) | Soil in-suit boring shearing testing device | |
| CN106596285A (en) | Experimental device used for evaluation of water stability of bituminous mixture and experimental method | |
| CN107389468A (en) | The lower building structural materials testing experiment method of Thermal-mechanical Coupling effect | |
| CN102095681A (en) | Instrument for detecting interlaminar cohesive shear strength of road surface after being soaked | |
| CN202024956U (en) | Detector for bond immergence shear strength of road surface interlayer | |
| CN112014216A (en) | Calculation method of three-dimensional strain failure criterion model of asphalt mixture | |
| CN105699208A (en) | Detection method of water stability of cold region large-grain-size asphalt mixture | |
| CN111982673A (en) | Height-adjustable soil body uniaxial tensile test method with sliding rod | |
| CN211955177U (en) | Device based on interface adhesion power ration test pitch and adhesion of gathering materials | |
| CN104805747B (en) | By the bituminous paving upper layer mixture mixing proportion design method of topology requirement | |
| Yongtaeg et al. | A study of bond of structural timber and carbon fiber reinforced polymer plate | |
| CN107576783B (en) | Asphalt cement shape memory performance testing method | |
| CN106248480B (en) | Tunnel lining structure crack treatment imitative experiment platform and experimental method | |
| KR20090109335A (en) | Evaluation Method for Properies of Concrete Shrinkage Crack by Slat-Ring Type Restrained Test | |
| CN107540274A (en) | The Cold Recycling Mixtures with Foamed Asphalt proportion design method of internal friction angle and cohesive strength | |
| CN210090213U (en) | Improved dynamic shear rheometer parallel plate | |
| CN109470565B (en) | Method for testing dynamic Poisson's ratio of asphalt mixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |