Thickness Design of Asphalt Layer Based on Dynamic Modulus

In China, the static creep modulus of hot-mix asphalt (HMA) was utilized to calculate the resilient deflection and tensile stress in asphalt pavement for structural thickness design. However, the static creep modulus does not match the stress and strain performance of HMA. In this paper, the dynamic modulus of HMA was studied by means of the modified loading time and the theoretical analysis and laboratory experiments. A field construction pavement structure, namely the connecting highway between Shiwu high-speed railway station and the Dawu County, was used to calculate the strain at the bottom of asphalt layer under the measured dynamic modulus by three-dimensional finite element (FE) software (i.e., ANSYS). According to China's specification, the dynamic modulus testing was carried out for the materials of this highway. The results of calculating and analysis indicated that the mechanical responses in asphalt pavement were different and the dynamic modulus should be used for the thickness design of the asphalt layer in China.

• Record URL:
  • https://doi.org/10.1061/9780784478462.027
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784478462
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Lin, Lirong
  • Chen, Bin
• Conference:
  • Geo-Hubei 2014 International Conference on Sustainable Civil Infrastructure
  • Location: Yichang Hubei, China
  • Date: 2014-7-20 to 2014-7-22
• Publication Date: 2014-7

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 218-223
• Monograph Title: Design, Analysis, and Asphalt Material Characterization for Road and Airfield Pavements

Subject/Index Terms

• TRT Terms: Asphalt pavements; Dynamic modulus of elasticity; Finite element method; Hot mix asphalt; Pavement design; Thickness
• Identifier Terms: ANSYS (Computer program)
• Geographic Terms: China
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01535068
• Record Type: Publication
• ISBN: 9780784478462
• Files: TRIS, ASCE
• Created Date: Aug 25 2014 12:11PM