Asphalt pavement interlayer shear test device
An interlaminar shearing and testing device technology, applied in measuring devices, using a stable shear force to test the strength of materials, instruments, etc., can solve the problem of large differences in stress states, shortened road service life, and interlaminar shear damage. and other problems to achieve the effect of improving accuracy and reliability
Inactive Publication Date: 2017-07-07
CHANGAN UNIV
View PDF9 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, semi-rigid base asphalt pavement generally has early failure phenomena. A large number of investigations and studies have been conducted by road experts at home and abroad. More prone to interlaminar shear failure
The interlayer shear will lead to a serious decline in the service level of the road after the interlayer slip, which will seriously shorten the service life of the road.
[0003] At present, the common devices used to evaluate the interlayer shear performance of asphalt pavement include direct shear tester, inclined shear tester, SST shear tester, LPDS shear tester and other devices, and most of these devices use direct shear or inclined shear tester indoors. However, there is no equipment in the prior art that can realize the joint action of asphalt pavement at different temperatures, vertical loads and horizontal forces. Testing of the shear properties between the lower layers
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention is described in further detail below in conjunction with accompanying drawing:
[0018] refer to figure 1 , the asphalt pavement interlayer shear test device according to the present invention comprises a lifting table 1, an environmental chamber 10, a control console 9 and a guide rail 8 arranged in the environmental chamber 10, an upper clamping device, a lower clamping device, a propulsion device, The first pressure sensor 7 used to detect the vertical load of the test piece 4 and the second pressure sensor 12 used to detect the horizontal thrust of the output end of the propulsion device; the environment box 10 is located on the console 9, and the guide rail 8 is arranged on the environment box 10 The top of the upper clamping device is provided with a card slot matching the guide rail 8, the lower clamping device is arranged at the bottom of the environmental chamber 10, and the upper end of the test piece 4 is clamped on the upper clamping de...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an asphalt pavement interlayer shear test device. An environment box is located on a control console, a guide rail is arranged at the top of the environment box, a clamping groove matched with the guide rail is formed in the top of an upper clamping device, a lower clamping device is arranged at the bottom of the environment box, an upper end to a to-be-tested piece is clamped on the upper clamping device, a lower end of the to-be-tested piece is clamped on the lower clamping device, an output shaft of a lifting platform is connected with the bottom of the lower clamping device, a propelling plant is fixed to a side face of the environment box, an output end of the propelling plant is connected with the side face of the upper clamping device, and a control end of the lifting platform, the control end of the environment box, the control end of the propelling plant, an output end of a first pressure sensor and the output end of a second pressure sensor are connected with the control console. The device can test of the interlayer shear characteristics of asphalt pavements at different temperatures, vertical loads and horizontal forces.
Description
technical field [0001] The invention belongs to the field of asphalt performance detection and relates to an asphalt pavement interlayer shear test device. Background technique [0002] At present, semi-rigid asphalt pavement structure is widely used in high-grade highways in our country. This pavement structure has made important contributions to the construction and development of high-grade highways suitable for heavy-duty traffic in my country. However, semi-rigid base asphalt pavement generally has early failure phenomena. A large number of investigations and studies have been conducted by road experts at home and abroad. Interlaminar shear failure is more likely to occur. Interlayer shear will cause interlayer slip, which will seriously reduce the road service level and shorten the service life of the road. [0003] At present, the common devices used to evaluate the interlayer shear performance of asphalt pavement include direct shear tester, inclined shear tester, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24G01N3/04
CPCG01N3/04G01N3/24G01N2203/04
Inventor 张久鹏胡壮朱存贞裴建中郭兴隆李明明赵振华
Owner CHANGAN UNIV