Volume 2 · Issue 6 (2025)
Study on Deformation Control Effect and Key Influencing Factors of High Modulus Asphalt Concrete in Reconstructed and Expanded Roads
Changzhan Ou1, Ruhao Wei2, Ruiwen Shi2, Yanshuang Ge2
1 China Design Group Co., Ltd, Xuzhou, Jiangsu, China
2 China Communications Construction Second Highway Engineering Bureau Third Engineering Co., Ltd., Xi’an, Shanxi, China
Abstract: With the continuous growth of highway traffic volume in China, High Modulus Asphalt Concrete (HMAC) has been widely applied in reconstructed and expanded roads due to its excellent mechanical properties and deformation resistance. This study systematically analyzed the influence of HMAC on vehicle passability in reconstructed and expanded roads via Abaqus numerical simulation, focusing on the pavement mechanical response under the working condition of vehicle lane change at the joint position. Additionally, the effects of three key factors—pavement smoothness, wheel pressure, and driving speed—on the vertical displacement response of HMAC pavement layers were systematically investigated. The results show that compared with ordinary asphalt concrete, HMAC pavement layers exhibit smaller vertical displacement and higher smoothness under lane change conditions. Meanwhile, under conditions of low smoothness, high wheel pressure, and high driving speed, HMAC can effectively disperse loads and inhibit deformation accumulation by virtue of its high elastic modulus and low creep characteristics. Particularly at the joints of reconstructed and expanded roads and under complex traffic conditions, HMAC demonstrates excellent deformation control capability, significantly improving vehicle pass ability and riding comfort.
Keywords: High Modulus Asphalt Concrete; Reconstructed and expanded roads; Numerical simulation; Finite element analysis; Pavement response
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