PAVEMENT FAILURE INVESTIGATION
PAVEMENT FAILURE INVESTIGATION
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Date
1991-06
Authors
Amu - Nnadi, Okechukwu Chukwugozie
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Abstract
Pavement Investigation or Evaluation is the study which
provides information to the general investment and planning
programme and maintenance phases of pavement management. It
assesses the deficiencies and defects of existing sections
of pavement thereby pinpointing the rehabilitation needs or
otherwise.
This case study centred on a selected major highway
linking Kaduna and Plateau states i.e. Katabu - Pambegua -
Jos Road whose pavement has tailed and is in a very
deplorable condition. The most fundamental methods of
laboratory and field tests have been adopted in the study
i.e. CBR and materials classification and characterisation.
Some of the major causes of failure were identified as
use of very poor quality lateritic materials, poorly graded
stone base aggregates, use of asphaltic concrete which
excluded some aggregate fractions with the resultant
reduction in stability and resistance of the asphalt. Also,
the compaction of various pavement layers was quite
inadequate in addition to other poor workmanship.
From the test results of the investigation, some
remedial measures, ranging from complete reconstruction in
some sections to crack sealing and asphaltic overlay for the
restoration of both structural and functional deficiencies
of the pavement have been recommended.
Description
A thesis submitted to the Postgraduate School,
Ahmadu Bello University Zaria, in partial fulfillment of the
requirements tor the award of the Master of Science (M.Sc)
degree in Civil Engineering Construction Materials.
Department of Civil Engineering
Ahmadu Bello University
Zaria.
JUNE, 1991
Keywords
PAVEMENT,, FAILURE,, INVESTIGATION