A new structure for continuously reinforced concrete pavement with road performance evaluation

作者：Li, Sheng; Yang, Fan^*; Liu, Zhaohui

来源：Construction and Building Materials, 2017, 157: 1047-1052.

DOI：10.1016/j.conbuildmat.2017.09.087

• Road engineering
• Continuously reinforced concrete pavement
• Anti-erosion layer
• Induced transverse joints
• Pavement performance

Due to the failure characteristics and imperfections of existing continuously reinforced concrete pavement (CRCP), a new CRCP structure is developed. The base course uses roller compacted concrete (RCC) over a gravel cushion. The surface layer is divided into two layers, where the upper layer is rubberized cement concrete, and the second layer is continuously reinforced concrete. An asphalt concrete layer is inserted between the base layer and the surface layer to act as an anti-scouring agent. Continuous longitudinal and transverse steel and sliding supports are placed on traffic lanes and inside half the width of the hard shoulder, the other half of the width being plain concrete. Using concepts from fracture mechanics, damage mechanics and numerical simulations, a study has been conducted to ascertain the damage and fracture of the asphalt overlay in the new structure. The results show that the fatigue damage lifetime of the overlay is substantially increased, while the crack propagation is greatly reduced. The new CRCP was successfully applied to a civil road engineering project and was shown to provide a notable economic benefit. Moreover, the new design can provide a theoretical basis for continuously reinforced concrete pavement and a useful reference for Chinese road development.

• 出版日期2017-12-30
• 单位长沙理工大学