PAVEMENT FAILURE INVESTIGATION ALONG ZARIA - FUNTUA ROAD
PAVEMENT FAILURE INVESTIGATION ALONG ZARIA - FUNTUA ROAD
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Date
1992-05
Authors
HASSAN, UMAR DANJUMA
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Abstract
This study was aimed at investigating the causes of
premature failures on Zaria - funtua Road linking Zaria
in Kaduna state and Funtua in Katsina State. The road
was asphalted in 1979. The riding quality on the road
had deteriorated in the past couple of years with
sections of the road developing various types of distress.
Both field and laboratory tests were carried out.
Results were utilized to draw conclusions on the type
of axle loading, quality of construction materials and
efficiency of the construction.
On the whole, it was found that the failures were
mainly caused by heavy axle load, use of poor strength
materials and low degree of compaction. The degree of
compaction was generally less than the desired 100%,
whereas 42% of axles sampled exceeded the ten tons legal
limit specified. The values of Atterberg limits did not
meet the Federal specifications of minimum of 30% for
the liquid limit and 12% for plasticity index. Also,
the C.B.R. values were found to be below the minimum of
00% for base, 30% for sub-base and 5% for the subgrade
set-out by the Federal specifications.
Finally, both short and long term measures have been
recommended to remedy the situation.
Description
A Thesis submitted to the Postgraduate School,
Ahmadu Bello University, Zaria in partial fulfillment
of the requirements for the award of degree of
M.Sc. Civil Engineering Highway Materials.
Department of Civil Engineering
Ahmadu Bello University
Zaria, Nigeria.
May 1992
Keywords
PAVEMENT,, FAILURE,, INVESTIGATION,, FUNTUA