A method and device for testing interlayer performance of asphalt pavement
A technology of interlayer performance and test method, which is applied in the measurement device, using a stable shear force to test the strength and strength characteristics of materials, etc., can solve problems such as the inability to accurately describe the stress state, and achieve the effect of simple structure
Active Publication Date: 2021-11-30
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0005] Aiming at the above-mentioned technical problem that the existing asphalt pavement interlayer performance test method cannot accurately describe the stress state under various road conditions, the present invention provides a kind of asphalt pavement interlayer performance test method and device, which can accurately test according to actual road conditions Interlayer performance of asphalt pavement
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Embodiment
[0029] This embodiment is carried out based on the heavy-duty traffic asphalt pavement project of a city in the southeast coast, and the specific test method steps are as follows:
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The present invention relates to the technical field of road engineering, in particular to a method and device for testing interlayer performance of asphalt pavement. The purpose is to provide a method for accurately testing the interlayer performance of asphalt pavement according to actual road conditions; The actual road condition of the road section to be tested and the core sample of the road section to be tested; the strength shear angle is calculated according to the road condition, and the interlayer shear strength test is performed on the core sample at the strength shear angle to obtain the interlayer shear strength; the fatigue shear strength of the layer is calculated according to the road condition The interlayer shear fatigue life test was performed on the core sample at the fatigue shear angle to obtain the interlayer shear fatigue life; the interlayer performance was evaluated by integrating the interlayer shear strength and interlayer shear fatigue life. The invention can accurately test the interlayer performance of the asphalt pavement according to the actual road conditions. The device provided by the invention has a simple structure, can adjust the shearing angle of the test, can carry out oblique shearing tests on laboratory core samples and actual road core samples, and has a wide range of applications.
Description
technical field [0001] The invention relates to the technical field of road engineering, in particular to a method and device for testing interlayer performance of asphalt pavement. Background technique [0002] The quality of interlayer bonding of asphalt pavement structure is one of the important factors affecting the life of asphalt pavement, especially in the large longitudinal slope section of the road, small radius section and vehicle acceleration and deceleration areas, etc., the pavement structure layer will bear greater horizontal load . When the load is repeated for a certain number of times, it is very easy to cause fatigue damage between the layers of the pavement structure, and in severe cases, a large number of rutting, shifting, wrapping, cracks and other diseases will be formed. In the construction process of asphalt pavement, if the inter-layer disposal is improper, it will also cause early disease of the asphalt pavement and seriously shorten the service l...
Claims
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IPC IPC(8): G01N3/24G01N3/02
CPCG01N3/02G01N3/24
Inventor 艾长发黄杨权宋珲陈栩阿里·拉赫曼周正峰任东亚
Owner SOUTHWEST JIAOTONG UNIV