Improvements to the structural condition index (SCI) for pavement structural evaluation at network level

Authors

• Boo Hyun Nam, College of Engineering and Computer Science
• Jinwoo An, The University of Texas Rio Grande ValleyFollow
• Mooyeon Kim, Cockrell School of Engineering
• Michael R. Murphy, Cockrell School of Engineering
• Zhanmin Zhang, Cockrell School of Engineering

Document Type

Article

Publication Date

9-13-2016

Abstract

Structural evaluation provides valuable information about the expected behaviour and response of pavements and can be used at the network level of pavement management to prioritise projects. The falling weight deflectometer (FWD) can be used to identify the beginning and end of management sections and group pavement sections with similar structural capacities. The structural condition index (SCI) was developed as a screening tool for the pavement network-level evaluation, and the FWD data are used to determine the SCI. For the successful implementation of the SCI concept at the network level, one of the critical issues is the accuracy of the index. This article evaluates the accuracy of the SCI and also discusses a concept and procedure how to improve the SCI and its algorithm for low-volume flexible pavements. A case study (Texas) illustrates that the original SCI algorithm underestimates the existing structural condition, resulting in overestimated treatments in the pavement maintenance and rehabilitation.

Comments

Copyright

Recommended Citation

Nam, Boo Hyun, Jinwoo An, Mooyeon Kim, Michael R. Murphy, and Zhanmin Zhang. "Improvements to the structural condition index (SCI) for pavement structural evaluation at network level." International Journal of Pavement Engineering17, no. 8 (2016): 680-697. https://doi.org/10.1080/10298436.2015.1014369

First Page

680

Last Page

697

Publication Title

International Journal of Pavement Engineering

DOI

10.1080/10298436.2015.1014369