Effects of existing condition and overlay property on asphalt overlay design and performance

Hao Wang, Jiao Nie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The objective of this study is to evaluate the effects of existing pavement condition and overlay material property on asphalt concrete (AC) overlay design and performance. The newest AASHTO design software DARWin-ME was used to conduct the analysis under various traffic and structure combinations. The factors considered in the analysis include the modulus of exiting layers, the rut depth of existing layer, the interface condition between AC overlay and existing pavement, and the properties of AC overlay (performance grade and Poisson's ratio). In addition to overlay thickness design, pavement performance analysis was conducted to see the effect of existing pavement condition and overlay material property on individual distresses. Several findings were concluded from this study. First, the sensitivity of overlay design thickness to the condition of the existing AC layer depends on the existing AC layer thickness and design traffic. Second, the existing condition of base and subgrade has no significant influence to the overlay performance and design. Third, the performance analysis results indicate that the modulus of existing AC layer and interface bonding condition have more significant effects on fatigue cracking than on rutting potential.

Original languageEnglish (US)
Title of host publicationT and DI Congress 2014
Subtitle of host publicationPlanes, Trains, and Automobiles - Proceedings of the 2nd Transportation and Development Institute Congress
EditorsAmiy Varma, Geoffrey D. Gosling
PublisherAmerican Society of Civil Engineers (ASCE)
Pages249-258
Number of pages10
ISBN (Electronic)9780784413586
DOIs
StatePublished - 2014
Event2nd Transportation and Development Institute Congress - Planes, Trains, and Automobiles: Connections to Future Developments, T and DI 2014 - Orlando, United States
Duration: Jun 8 2014Jun 11 2014

Publication series

NameT and DI Congress 2014: Planes, Trains, and Automobiles - Proceedings of the 2nd Transportation and Development Institute Congress

Other

Other2nd Transportation and Development Institute Congress - Planes, Trains, and Automobiles: Connections to Future Developments, T and DI 2014
CountryUnited States
CityOrlando
Period6/8/146/11/14

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials

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