Document Type

Article

Publication Date

4-2-2013

Publication Title

International Journal of Pavement Engineering

Volume

15

Abstract

The Kansas Department of Transportation has a comprehensive pavement management system known as network optimisation system (NOS). Annual condition surveys are conducted for NOS. Currently, the structural number (SN) of flexible pavements is computed using the American association of state highway and transportation officials equation based on the centre and fifth sensor deflections of a falling weight deflectometer (FWD). However, a rolling wheel deflectometer (RWD) can be used to collect deflection data at the network-level. This study was conducted to see whether the SN of flexible pavements can be obtained from this RWD deflection and NOS condition survey results. In this study, FWD deflection data, collected from 1998 to 2006, were analysed. Multiple regression analysis was done. The results showed that there is a negative relationship between SN and centre deflection. Equations can be used to calculate SN based on FWD (or RWD) centre deflections and network-level condition survey results. The SN is more sensitive to centre deflection than the total pavement thickness.

Issue

4

First Page

309

Last Page

322

DOI

10.1080/10298436.2013.784766

ISSN

1029-8436

Rights

This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Pavement Engineering on April 2, 2013, available online: http://www.tandfonline.com10298436.2013.784766.

Download

Share

COinS