Characterization of viscoplastic yielding of asphalt concrete Academic Article

abstract

• A temperature and strain rate dependent yield surface model was proposed to characterize the viscoplastic yielding of asphalt concrete. Laboratory tests were conducted on specimens that have two binders, two air void contents, and three aging periods. Strain decomposition was performed to obtain viscoplastic strain and stress-pseudostrain curves were constructed to determine the model parameters accurately and efficiently. Results indicate that a stiffer asphalt concrete has greater cohesion and strain hardening amplitude, both of which decline as temperature increases or strain rate decreases. The temperature and strain rate factors of the yield surface can be accurately determined solely by the peak stress of the strength tests. 2013 Elsevier Ltd. All rights reserved.

authors

• Lytton, Robert

published proceedings

• CONSTRUCTION AND BUILDING MATERIALS

author list (cited authors)

• Zhang, Y., Luo, R., & Lytton, R. L.

citation count

• 25

complete list of authors

• Zhang, Yuqing||Luo, Rong||Lytton, Robert L

publication date

• October 2013

publisher

• Elsevier  Publisher

published in

• Construction and Building Materials  Journal

keywords

• Asphalt Concrete
• Pseudostrain
• Strain Rate
• Temperature
• Viscoplastic Yield Surface
• Yield Strength

Digital Object Identifier (DOI)

• 10.1016/j.conbuildmat.2013.05.075

start page

• 671

end page

• 679

volume

• 47

URL

• http://dx.doi.org/10.1016/j.conbuildmat.2013.05.075