TITLE:
Diagnosis Study of the Louga-Ouarack-Ndoyene R31 Regional Road (Senegal)
AUTHORS:
Seybatou Diop, Meissa Fall, Adama Dione, Moshood N. Tijani
KEYWORDS:
Senegal, Road Diagnosis, Lacroix Deflectograph, Deflection, Reinforcement, Maintenance
JOURNAL NAME:
Geomaterials,
Vol.5 No.1,
January
19,
2015
ABSTRACT: The degree of structural
damage of the Louga-Ouarack-Ndoyene R31 regional road was surveyed using
Lacroix deflectographe and geotechnical testing, in order to recommend possible
rehabilitation measures aimed at maintaining the high level of service over the
projected life span of the road. The data processing and interpretation were
essentially based on the French standards and specifications, through which
synthetic variables were generated with a qualitative significanceand on the basis of which the extent
of repairs and rehabilitation works to be undertaken were suggested. The
decision grid thus produced, revealed road structure quality indices of mostly
Q3, Q4, and Q5 types for a segment length of 36.954 km (equivalent to some
69.44% of the total road section), which justifies some major reinforcement
works. The remaining part of the road section (nearly30.56% with road quality indices ≤ Q2)
is still in acceptable condition, requiring only someminor maintenance works. The
rehabilitation costs were estimated to be of the order of5,352,000,000 (five billion three
hundred fifty-two million) CFA francs, based on local market price conditions.