Stress Characteristic Analysis of Repaving Asphalt Pavement Structure on Old Cement Road

Abstract:

To solve the early destruction problems occurred when overlaying asphalt pavement structure containing semi-rigid base on broken cement concrete pavement, finite element software is used to compare the stress characters between the repaving pavement and ordinary pavement, and analyze the repaving structures under different loads and different road transverse grade. It shows that the value of compressive stress at the top of base of repaving pavement is significantly higher than that of ordinary pavement, meanwhile, its value of tensile stress of base bottom is lower; the asphalt surface and new base top of repaving pavement need to bare a high value of shear stress and compressive stress under overload, so it’s prone to splitting failure in the base. With the increase of transverse grade, both the shear stress difference of road surface and maximum vertical compressive at top of the base increase in a lower position, but the situation is opposite in the higher position.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1377-1381
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1377
• Online since: November 2012
• Authors: Hong Lu Mao, Pei Zhi Zhuang, Ya Nan Zang, Xiao Ming Yi
• Keywords: Cement Concrete Pavement Reconstruction, Numerical Analysis, Rubblization

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