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Road Materials and Pavement Design Volume 25, 2024 - Issue 4
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Research Articles

Mechanical behaviour of concrete pavement widening

Yongguo Fua School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Jiang Xina School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaCorrespondence[email protected] [email protected]
View further author information
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Gu Hanyana School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Luo Xia School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Dong Zhichena School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Babiker Lana Elabbas Abdelhaliema School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Qiu Yanjuna School of Civil Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of China;b Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, People’s Republic of China;c MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaView further author information
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Pages 678-693 | Received 28 Mar 2022, Accepted 30 May 2023, Published online: 14 Jun 2023
 
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Abstract

When the old cement concrete pavement continues to be used for widening, compared with the new construction, there are some prominent challenges, such as non-uniform support of the new and old subgrades, additional settlement of the old subgrade caused by the widened new subgrade, and gap between the tie-bar added to the old pavement slab and the concrete. To reveal the difference in the mechanical behaviour of the widened and new cement concrete pavement structures under vehicle load, a finite element model of the cement concrete pavement widening is established with the use of KENSLABS computer programme. The influence weight of non-uniform support of old and new subgrades, additional settlement of new subgrade to old subgrade and gap between tie-bar added within old pavement slab and concrete on deflection in cement concrete pavement widening is clarified, and the control measures for the deflection are proposed.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Sichuan Science and Technology Program [grant number 2019YFS0492].

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