CN104931679A - Pitch matrix binder aging test device - Google Patents

Abstract

The invention belongs to the technical field of road engineering material test equipment, and discloses an asphalt binder aging test device. The device includes a box body, the rear side of the box body is provided with a motor, the output shaft of the motor is arranged horizontally, an aging bottle is fixed horizontally on the output shaft of the motor, and a plurality of axial baffles are arranged on the inner wall of the aging bottle; At least one ultraviolet lamp is provided on the left side and the right side of the cabinet respectively; the lower part of the cabinet is provided with a ventilation pipe and a heating device for heating the ventilation pipe, and the upper part of the cabinet is provided with an exhaust device; the ventilation pipe is provided with an outlet The air pipe and the air outlet pipe are provided with a plurality of air outlet holes, and the air outlet pipe extends into the inside of the aging bottle. The device can overcome the problems of asphalt film thickness and uniformity in the existing asphalt binder aging test device, and can simulate the dynamic aging process of asphalt binder under the interaction of heat, oxygen and light, which is helpful for comprehensive evaluation of asphalt The aging performance of the heat, oxygen and light interaction of the binder.

Description

An asphalt binder aging test device

technical field

The invention belongs to the technical field of road engineering material test equipment, in particular to an asphalt binder aging test device.

Background technique

The aging performance of asphalt binder is an important factor to evaluate its durability. As of the end of 2014, the total mileage of roads at all levels in my country has reached about 5 million kilometers, and asphalt roads account for a large proportion. At present, almost all new high-grade highways use asphalt mixture as the surface layer, and modified asphalt is also used for the reconstruction of old roads. The service quality and service life of the pavement, it can be seen that the comprehensive evaluation of the aging performance of asphalt binder is of great significance. The asphalt binder aging test devices widely used today mainly include: asphalt film oven, rotating asphalt film oven, pressure aging container system, ultraviolet aging test chamber, etc. Among them, the rotating asphalt film oven mainly simulates asphalt bonding during transportation, mixing, and construction. The thermo-oxidative aging process of the material. During the test of the device, the asphalt binder needs to form a layer of about 0.5mm asphalt film in the aging sample bottle. The film thickness is required to be uniform, and the actual situation of the asphalt binder should be simulated as much as possible. However, it is difficult for the original aging sample bottle to ensure the thickness and uniformity of the asphalt film, and it cannot simulate the real environment well, which has a great impact on the accuracy of the test results and cannot accurately reflect Aging process of asphalt binder.

Contents of the invention

The purpose of the present invention is to provide a kind of asphalt binder aging test device, this aging test device can overcome the asphalt film-forming thickness and uniformity problem in the existing asphalt binder aging test device, can simulate asphalt binder in heat, oxygen, The dynamic aging process under the interaction of multiple factors of light is helpful to comprehensively evaluate the aging performance of asphalt binder due to the interaction of heat, oxygen and light.

In order to achieve the above-mentioned technical purpose, the present invention adopts the following technical solutions to achieve.

An asphalt binder aging test device, characterized in that it comprises a box body, a motor is arranged on the rear side of the box body, the output shaft of the motor is horizontally arranged, and an aging bottle is horizontally fixed on the output shaft of the motor , the inner wall of the aging bottle is provided with a plurality of axial baffles; the left side and the right side of the box are respectively provided with at least one ultraviolet lamp; The heating device for heating the ventilation pipe, the upper part of the box is provided with an exhaust device; one end of the ventilation pipe is provided with an air pump, and the other end of the ventilation pipe is provided with an outlet pipe, and the outlet pipe is provided with a plurality of Air outlet, the air outlet pipe extends into the inside of the aging bottle.

The characteristics and further improvement of this technical solution are:

The bottom of the connection between the aging bottle and the output shaft of the motor is provided with a plurality of clamping plates extending radially outward; the aging bottle is installed on the output shaft of the motor through a base, and the base is provided with a The bottom of the bottom and the opening through which the clamping plate passes, the base is provided with an inner groove for accommodating the rotation of the clamping plate, and the opening communicates with the inner groove; the output shaft of the motor is provided with a flange, and the base and the The flanges are fixedly connected by screws.

The ventilation pipe is arranged in the shape of a multi-turn coil.

A partition is arranged between the ventilation pipe and the heating device.

The outside of the box is provided with a control unit, the control unit includes a motor switch for controlling the motor, an ultraviolet lamp switch for controlling the ultraviolet lamp, an exhaust switch for controlling the exhaust device, and a control unit for heating The heating switch is used to control the main switch of the whole device.

The box body is formed by four side walls connected end to end at both ends by an upper top surface and a lower bottom surface; side walls and rear side walls.

The end of the air outlet pipe is set in an open shape.

There are four baffles with a height of 1 mm.

The aging bottle is made of quartz glass.

The asphalt binder aging test device of the present invention drives the aging bottle to rotate through the motor, and a baffle is arranged in the aging bottle to divide it into four equal parts. When the aging bottle rotates in the box, the baffle makes the asphalt binder form a film; With the existence of the baffle, the asphalt binder can be uniformly formed into a film in the aging bottle, which ensures the uniformity of the asphalt film; the aging bottle is designed to rotate independently, and the hot air outlet pipe is directly extended into the inside of the aging bottle to form an asphalt binder. It provides enough oxygen and flowing airflow aging environment, which can better simulate the aging process of asphalt mixture construction and use; and can realize uniform heating and uniform ultraviolet radiation on the aging bottle, and the test data is more accurate. Ultraviolet lamps are installed in the middle of the left and right sides of the box, and the aging bottle is made of quartz glass, so that the asphalt binder film sample in the bottle can be fully irradiated by the ultraviolet lamp to simulate the ultraviolet aging process of asphalt binder.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of a kind of asphalt binder aging test device of the present invention;

Fig. 2 is the schematic diagram of the connection structure of the motor shown in Fig. 1, the aging bottle and the outlet pipe;

Fig. 3 is a structural schematic diagram of the ventilation pipe shown in Fig. 1;

Figure 4a is a schematic structural view of the aging bottle shown in Figure 1;

Figure 4b is a schematic top view of Figure 4a;

Fig. 5 is a schematic structural view of the base shown in Fig. 2;

In the figure: 1. Cabinet; 2. Motor; 3. Aging bottle; 4. Baffle; 5. Ultraviolet light; 6. Ventilation pipe; 7. Heating device; 8. Exhaust device; Air outlet; 11. Clamping plate; 12. Base; 13. Opening; 14. Inner tank; 15. Flange; 16. Partition; 17. Control unit; 18. Inlet valve 19. Air pump; 20. Air pipe connection sleeve.

Detailed ways

With reference to Fig. 1, Fig. 2, be the structural representation of a kind of asphalt binder aging test device of the present invention; The four side walls are the left side wall and the right side wall, and the front side wall and the rear side wall are oppositely arranged. A motor 2 is arranged on the rear side of the box body 1, the output shaft of the motor 2 is set horizontally, and the aging bottle 3 is fixed horizontally on the output shaft of the motor 2, and the central axis of the aging bottle 3 is coaxial with the output shaft of the motor 2; The inner wall of the aging bottle 3 is evenly provided with a plurality of axial baffles 4; the left side and the right side of the box body 1 are respectively provided with at least one ultraviolet lamp 5, in this embodiment, the left side of the box body 1 An ultraviolet lamp 5 is arranged on the side and the right side respectively; the lower part of the box body 1 is provided with a ventilation pipe 6 and a heating device 7 for heating the ventilation pipe 6, and the upper part of the box body 1 is provided with an exhaust device 8; the ventilation pipe 6 An air pump 19 is provided at one end of the air pipe 6, an air outlet pipe 9 is provided at the other end of the air pipe 6, an air inlet valve 18 is arranged on the air pipe 6, and the air pipe 6 is connected to an external air supply device through the air pump 19, and the air pipe 6 and the air outlet pipe 9 The air outlet pipe 9 is provided with a plurality of air outlet holes 10 so that the hot air can be ejected evenly, and the end of the air outlet pipe 9 is arranged in an open shape. Air outlet pipe 9 stretches into aging bottle 3 inside, is about to butt against the bottle bottom of aging bottle 3.

The structural representation of the aging bottle shown in Figure 4a and Figure 4b, one end of the aging bottle 3 connected to the output shaft of the motor 2 is the bottom, the other end is the upper part, the bottom of the aging bottle 3 is sealed, and the upper part is set as an open shape. There are ribs extending radially inward; the bottom of the aging bottle 3 is provided with a plurality of clamping plates 11 extending radially outward; the aging bottle 3 is installed on the output shaft of the motor 2 through the base 12, and the base 12 is provided with For the bottom of the aging bottle 3 and the opening 13 through which the clamping plate 11 passes, the base 12 is provided with an inner groove 14 for accommodating the rotation of the clamping plate 11, and the opening 13 communicates with the inner groove 14, as shown in the structural diagram of the base as shown in Figure 5; After the bottom of the aging bottle 3 is put into the opening 13 on the base 12, the aging bottle 3 is rotated so that the clamping plate 11 of the aging bottle 3 snaps into the inner groove 14, and the aging bottle 3 is fixed on the base 12; There is a flange 15, and the base 12 and the flange 15 are fixedly connected by screws.

Wherein, the vent pipe 6 is arranged in a multi-turn coil shape, and the length of the vent pipe is increased to fully heat the air, as shown in FIG. 3 .

Wherein, a partition 16 is arranged between the ventilation pipe 6 and the heating device 7, and the partition 16 prevents the heating device 7 from scalding the staff.

Wherein, the exterior of box body 1 is provided with control unit 17, and control unit 17 comprises the motor switch that is used to control motor, is used to control the ultraviolet lamp switch of ultraviolet lamp, is used to control the exhaust switch of exhaust device, is used to control heating. The heating switch of the device is used to control the main switch of the whole device. The device is also provided with a temperature control unit.

Wherein, there are four baffle plates 4 with a height of 1 mm.

Wherein, the aging bottle 3 is made of quartz glass, so that the ultraviolet rays can fully shine into the aging bottle 3 .

The use process of the aging test device is as follows:

Pour the asphalt binder sample to be aged into the body of the aging bottle 3, screw the aging bottle 3 into the base 12 fixed in the box body 1, the base 12 has been fixed with the flange 15; adjust the air outlet pipe 9 so that It extends into the interior of the aging bottle 3 . Turn on the power supply, press each start switch on the control unit 17, the ultraviolet lamp 5 that is arranged on the left and right sides of the inside of the casing 1 starts to radiate ultraviolet rays outward, the heating device 7 starts to work, and the air flow passes through the ventilation pipe 6 and The air outlet pipe 9 is blown into the aging bottle 3, and the motor 2 arranged in the middle of the back of the box body 1 starts to work at the same time, driving the aging bottle 3 arranged on its output shaft to rotate around the central axis of the motor 2, so that the aging bottle 3 is evenly heated And uniform ultraviolet radiation, to ensure the accuracy of the test data.

The present invention adopts a heating device 7, an ultraviolet lamp 5, etc. in the box body 1, which can simulate the aging process of the asphalt binder under the interaction of heat, oxygen and light. Moreover, the device changes the rotation mode of the aging bottle in the original box. The independent rotation of the aging bottle 3 can directly extend the air outlet pipe 9 into the aging bottle 3, ensuring the uniform contact between the asphalt film and the air in the aging bottle 3, and also ensuring The asphalt film in the aging bottle 3 is evenly heated and irradiated with ultraviolet rays. Four baffles 4 are equally divided in the body of the aging bottle to ensure the uniform thickness of the asphalt binder film. The above settings can ensure accurate test data, flexible and convenient operation.

Although the embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative, instructive, and not restrictive . Under the enlightenment of the description, those skilled in the art can also make many forms without departing from the protection scope of the claims of the present invention, and these all belong to the protection of the present invention.

Claims (9)

1. an aging test device for asphaltic binder, is characterized in that; Comprise casing, the trailing flank in described casing is provided with motor, and the output shaft of described motor is for being horizontally disposed with, and on the output shaft of described motor, level is fixed with aging bottle, and the inwall of described aging bottle is provided with multiple axial baffle plate; Left surface in described casing and right flank are respectively arranged with at least one UV-lamp; The bottom of described casing is vertically disposed with snorkel and to the heating arrangement of snorkel heating, the top of described casing is provided with air exhausting device; Described snorkel is provided with escape pipe, described escape pipe is provided with multiple venthole, it is inner that described escape pipe stretches into aging bottle.

2. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: the bottom that described aging bottle is connected with the output shaft of motor is provided with multiple clamp extended radially outwardly; Described aging bottle on the output shaft of motor, described base is provided with the opening supplying the bottom of described aging bottle and clamp to pass through by floor installation, and described base is provided with the inside groove holding described clamp and rotate, described opening is communicated with inside groove; The output shaft of described motor is provided with ring flange, and described base is fixedly connected with by screw with ring flange.

3. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: it is coil-like that described snorkel is set to multi-turn.

4. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: be provided with dividing plate between described snorkel and heating arrangement.

5. a kind of aging test device for asphaltic binder according to claim 1, it is characterized in that: the outer setting of described casing has control module, described control module comprises the motor switch for controlling motor, for controlling the UV-lamp switch of UV-lamp, for controlling the exhaust switch of air exhausting device, for controlling the heater switch of heating arrangement, for controlling the master switch of whole device.

6. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: described casing by end to end four sidewalls two ends by end face and bottom surface enclose and form; Described four sidewalls are the left side wall and right side wall that are oppositely arranged, the front side wall be oppositely arranged and rear wall.

7. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: the end of described escape pipe is set to opening shape.

8. a kind of aging test device for asphaltic binder according to claim 1, is characterized in that: described baffle plate is four, and it is highly 1mm.

9. a kind of aging test device for asphaltic binder according to any one of claim 1 to 8, is characterized in that: described aging bottle adopts quartz glass to make.