A test device and method for testing the shear strength of asphalt materials
An asphalt material and shear strength technology, which is applied in the field of shear strength test devices, can solve problems such as inappropriate shear strength, and achieve the effect of wide application and simple operation.
Active Publication Date: 2020-06-09
CHANGAN UNIV +1
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Problems solved by technology
When studying the shear stress and deformation of asphalt mixture, the above methods have their own advantages and disadvantages, and the above methods are not suitable for simply studying the shear strength of asphalt and asphalt sand materials
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[0021] The present invention is described in further detail below in conjunction with accompanying drawing:
[0022] refer to figure 1 , the test device for testing the shear strength of asphalt materials according to the present invention includes a controller, an environmental chamber 11 and a support plate 10, a column 7, a test mold 8, a power box 1, a transmission shaft 2, a telescopic Sleeve 3 and shear head 5; support plate 10 is fixed on the bottom of environmental box 11, the lower end of column 7 and test mold 8 are fixed on support plate 10, power box 1 is fixed on the upper end of column 7, and the asphalt material to be tested 4 Fill in the test mold 8, the upper end of the transmission shaft 2 is connected with the output shaft of the power box 1, the lower end of the transmission shaft 2 is inserted into the asphalt material 4 to be tested, and the shear head 5 is fixed on the lower end of the transmission shaft 2, the power Inside the box 1, there is a detecti...
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The invention discloses a testing device and method for testing the shearing strength of an asphalt material. The testing device comprises a controller, an environment box, and a supporting plate, a stand column, a testing mold, a power box, a transmission shaft, a retractable sleeve and a shearing head which are arranged in the environment box, wherein the supporting plate is fixed at the bottom of the environment box; the lower end of the stand column and the testing mold are fixed on the supporting plate; the power box is fixed at the upper end of the stand column; an asphalt material to be tested is charged into the testing mold; the upper end of the transmission shaft is connected with an output shaft of the power box; the lower end of the transmission shaft is inserted into the asphalt material to be tested; the shearing head is fixed at the lower end of the transmission shaft; the power box is internally provided with a detection system for measuring a shearing torque and shearing stress on the shearing head; the retractable sleeve sleeves an outer wall of the transmission shaft; the controller is connected with a control end of the power box and an output end of the detection system. By adopting the device and the method, disclosed by the invention, the shearing strength of asphalt and an asphalt sand material can be accurately measured.
Description
technical field [0001] The invention relates to a test device and method for shear strength, in particular to a test device and method for testing the shear strength of asphalt materials. Background technique [0002] In road engineering, the damage of asphalt pavement is various and the reasons are not the same. Among them, the strength and stability of the asphalt mixture play a vital role. In the pavement damage caused by the damage of the mixture, it mainly comes down to The shear failure of the mixture is mainly the shear failure of the asphalt itself and the shear spalling of the contact surface between the asphalt and the aggregate. [0003] Asphalt concrete is a complex system composed of asphalt, aggregates and voids. After introducing the concept of asphalt sand, the system can be simplified into coarse aggregate, asphalt sand and voids. Among them, asphalt sand is composed of asphalt matrix and fine aggregate below 2.36mm Therefore, it is of great significance to...
Claims
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IPC IPC(8): G01N3/24
CPCG01N3/24
Inventor 张久鹏葛敬勇裴建中胡壮朱存贞李雪倩
Owner CHANGAN UNIV