LEMU ROAD PROBLEMS AND SOLUTIONS

Bala, A.B. and Yusuf, S.

Department of Civil Engineering

Kaduna Polytechnic, Kaduna

E-mail: ibnyusuf@yahoo.com

ABSTRACT

Due to the structural failure of Lemu road, roadway, soil samples were obtained from the site for geotechnical investigation. The results revealed that for samples A and B, percentage passing sieve No. 200 were 7.64% and 6.28% with a liquid limit of 24%, 26% and a plasticity index of 7.09% and 14.60% respectively. While sample C has percentage passing through sieve No. 200 as 11.15%, a liquid limit of 32%, and plasticity index of 11.17%. The AASHTO classification of the samples revealed that the soil group is A-2 with sub groups of A-2-6 and A-2-7 (Reddish brown). This confirms the suitability of the soil for road construction. The failure may be due to poor workmanship and probably expiration of lifespan of the pavement structure. It is hoped that if the recommendation given is implemented, the roadway will provide an alternative route and reduce traffic congestion between Poly road and Old Panteka.