Load Model and F Coefficient on Asphalt Pavement Deflection

Abstract:

Deflection is the important index of asphalt pavement design and the final acceptance. Using double circular load of Design Specification and four circular load of Benkelman test vehicle, the deflection was analyzed with four kinds of common pavement structures, the results show that the deflection of theoretical calculation was the Benkelman beam test 55%-75%, but Design Specification uses the F coefficient which less than 1 to correct the difference, the two have had the contradiction. The deflection of two and three axles load mode were analyzed, and compared with the axle load conversion coefficient C₁. The result could provide the reference of axle load conversion and the correction coefficient for the pavement design.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 4347-4350
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.4347
• Online since: May 2011
• Authors: Yong Li Xu, Zhen Zhen Xing
• Keywords: Asphalt Pavement, Axle Load Conversion, Correction Coefficient, Deflection, Double and Four Circular Load

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