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Low temperature cracking test instrument of asphalt mixture
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A technology of asphalt mixture and testing instrument, which is applied in the direction of instruments, scientific instruments, analytical materials, etc., can solve the problems of affecting the test results and the difficulty of measuring the horizontal deformation of asphalt mixture
Inactive Publication Date: 2009-06-24
CHANGAN UNIV
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Abstract
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Problems solved by technology
During the test process, due to the test equipment, it is difficult to measure the horizontal deformation of the asphalt mixture, which affects the test results of the test
Method used
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Embodiment 1
[0017] exist figure 1 , 2 Among them, the asphalt mixture low-temperature splitting tester of this embodiment is composed of a heating pipe 1, an environmental box 2, a force sensor 3, a bearing frame 4, a vertical displacement sensor 5, an upper layer 6, a condenser 7, an evaporator 8, and a lower layer 9. Refrigerator 10, bracket 11, computer 12, ejector rod 13, ejector rod guide sleeve 14, gear 15, motor 16, upper mounting plate 17, A / D converter 18, fixture bottom plate 19, left guide block 20, Reaction force bracket 21, left sliding rod 22, temperature sensor 24, sliding rod contact 25, vertical displacement sensor bracket 26, horizontal displacement sensor 27, right sliding rod 28, right spring seat 29, right spring 30, right guide Block 31, left spring 32, left spring seat 33 are connected and formed.
[0018] The bottom of support 11 is fixedly connected with motor 16 and reaction force support 21 and computer 12 with threaded fastening connector, on the output shaft...
Embodiment 2
[0025] In this embodiment, the shape of the left sliding insertion rod 22 is that three horizontal rods and a connecting rod are welded together to form an E-shaped frame, and the rear horizontal rod and the middle horizontal rod of the left sliding insertion rod 22 are inserted into the left guide block 20. 1. The end of the front horizontal bar passes outside the left guide block 20, and the three horizontal bars of the left sliding plunger 22 can move left and right in the left guide block 20, and the sliding plunger contact 25 is installed on the end of the front horizontal bar. The connecting rod of the sliding plunger 22 is positioned outside the left end face of the left guide block 20, and a left spring seat 33 and a left spring 32 are installed on the intermediate horizontal bar between the connecting rod of the left sliding plunger 22 and the left end face of the left guide block 20. The left spring 32 overlaps the right end of the middle horizontal bar on the left en...
Embodiment 3
[0027] In this embodiment, the left sliding insertion rod 22 is two horizontal rods connected with a connecting rod to form an inverted F-shaped frame, and the horizontal displacement sensor 27 is installed on the front horizontal rod of the left sliding insertion rod 22 through threaded connection. superior. The shape of the right sliding plunger 28 is that three horizontal bars are combined with a connecting rod to form an E-shaped frame, and the sliding plunger contact 25 is installed on the end of the front horizontal bar of the right sliding plunger 28. Other components and the coupling relationship of the components are the same as in Embodiment 1.
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Abstract
A low-temperature splitting tester for asphalt mixture, equipped with a motor equipped with gears or a hydraulic motor connected to a hydraulic pump through a conduit, a computer, an environmental box connected to the upper mounting plate, and a reaction unit inserted into the environmental box on the bracket. Force support, the lower bottom surface of the upper mounting plate is provided with a guide rod guide sleeve, a cooling mechanism is provided on the support and in the environmental box, a heating pipe, A / D converter, and a temperature sensor are installed in the environmental box, and the upper end and the fixture are installed in the environmental box The bottom plate is connected as a whole, and the lower part is processed with a rack and a gear meshing ejector rod. The left and right clamps and the vertical displacement sensor bracket are installed on the fixture bottom plate. The left or right clamp is provided with a limit block. Connected horizontal displacement sensor, the force sensor with the lower end connected to the bearing frame is set on the reaction force support, and the vertical displacement sensor is located in the bearing frame. It has the advantages of reasonable design, accurate measured data and high degree of automation, and can be used to test the low-temperature crack resistance of asphalt mixture.
Description
technical field [0001] The invention belongs to the technical field of paving and repairing machines, tools or auxiliary equipment for pavement of roads or other similar structures, and in particular relates to a low-temperature splitting tester for asphalt mixture. Background technique [0002] Asphalt mixture is one of the most commonly used materials in highway engineering and is widely used in pavement surface. Due to the comprehensive effect of traffic load and temperature changes in the natural environment, asphalt pavement often cracks during use. This phenomenon is especially serious in seasons when the temperature is low and the temperature changes greatly. After the pavement is cracked, stress concentration will appear in the cracks, and water will penetrate into the pavement structure layer from these cracks to cause further damage to the pavement. Therefore, whether the asphalt mixture has good low-temperature crack resistance is an important factor affecting th...
Claims
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Application Information
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