PAVEMENT RUTTING IN
THE KINGDOM OF SAUDI ARABIA: A DIAGNOSTIC APPROACH TO
I. Dhubaib, S. Khan,
and A. Bubshait A.
is the most predominant type of pavement failure in the Kingdom of Saudi Arabia.
Recently constructed pavements are experiencing unexpectedly high levels of
rutting within short periods (months in some cases) from opening them for
traffic. Some factors which are possibly responsible for this premature rutting
are: large number of overloaded trucks, high ambient temperatures, use of full-depth
asphalt pavements, use of softer asphalt grade (60-70 pen.) than suitable for
the environmental conditions, tender mixes, Insufficient voids, low quality
filler materials, aggregate gradation on the finer side, use of a mix design
method (Marshall) Incapable of screening out rutting susceptible mixes, and
poor construction practices.
This paper will present a
summary of a survey of the extent and degree of rutting of pavements In Saudi Arabia. Corrective
measures will be pointed out for immediate implementation for maintenance of
rutted pavements, as well as new pavements' construction. Finally, the paper
will summarize the national research project undertaken to investigate the
rutting problem nationwide.