DESIGN AND MAINTENANCE
CRITERIA FOR LOCAL ASPHALT CONCRETE MIXES
H.I. AI-Abdul Wahhab, M. Fatani, I. Al-Dubabe,
A. Bubshait
and A.S. Noureldin
THE FOURTH SAUDI ENGINEERING CONFERENCE,
NOV. 1995 - VOLUME II
ABSTRACT.
Premature rutting has occurred on a number of
highways recently built in Saudi
Arabia. The Ministry of Communications, in
an effort to solve the problem, has initiated a number of studies and started
to replace affected pavements. The aim of
this study is to identify possible factors which may relate to rutting and to
recommend maintenance and repair criteria for existing rutted pavements. The
study covers nineteen sections of eleven major highways. Results indicate a
direct relationship between rutting and the percentage of air voids; the
percentage of voids in mineral aggregate; the percentage of voids filled with
asphalt, resilient modulus at 25°C; and asphalt viscosity. These properties
were used as bases for maintenance criteria as well as criteria for the design
of mixes to resist rutting on Saudi roads.