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| Test Method of the Mechanical Response Based on the Pavement Structure Model |
| ZHOU Xing-ye1, TANG Hao2, LIANG Dong-dong2, HUO Xin-rui3, WANG Xian-he4 |
1. Fundamental Research Innovation Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China;
2. China Road & Bridge Corporation, Beijing 100011, China;
3. China First Highway Engineering Company LTD, Beijing 100024, China;
4. China Highway(Beijing) Engineering Materials Technology Co., Beijing 100088, China |
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Abstract Corresponding experiments were designed and accomplished to obtain the authentic mechanical response mechanism of pavement under different loading conditions. Replicability and reproducibility of the experiments were discussed in this paper. Meanwhile, the response mechanism for three typical pavement structures was analyzed. Results show that mechanical response test method for pavement structure has characteristics of good replicability, reproducibility, and reliability. The method can also be used as an effective way to investigate the mechanical response of pavement structures. The mechanical states of different pavement materials under the same test condition are quite different. For cement bound granular and asphalt concrete, radial strain changes as alternative compression-tension with obvious mechanical response characteristic. However, the situation is different for cement concrete. The region of pavement that is close to the surface is in compressive state. By contrast, the far region is in tensile state. Top-down cracking of pavement developed from top surface crack may appear when load is too heavy. The working state of pavement can be reflected by utilizing the mechanical response test method. The mechanical response test method is a good reference when calculating mechanical state and determining parameters of pavement material.
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Received: 15 June 2018
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Corresponding Authors:
ZHOU Xing-ye
E-mail: zhouxingye1982@163.com
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2020, Vol. 14 
