Network-level flexible pavement structural evaluation

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 a...

Full description

Saved in:
Bibliographic Details
Published in:The international journal of pavement engineering 2014-04, Vol.15 (4), p.309-322
Main Authors: Gedafa, Daba S., Hossain, Mustaque, Miller, Richard, Van, Thomas
Format: Article
Language:English
Subjects:
Concrete pavements
Deflection
Falling
flexible pavement
Highway construction
Mathematical analysis
Multiple regression analysis
network-level
Optimization
Pavements
Regression analysis
Roads & highways
structural evaluation
structural number
Surveys
Transportation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1029-8436
1477-268X
DOI:10.1080/10298436.2013.784766