Effects Of Fines Content On Some Engineering Properties Of Laterite Soils In Ile-Ife, Nigeria.
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One of the factors which affect road failure (which is a common feature of the tropical environment) is the soil used as sub-base material. Soils (usually obtained from borrow pits) used as sub-base material contain a certain amount of particles passing sieve size 7 urn which is referred to as fines (silt and elm). This work studied the effect of varying fines content on the engineering properties of selected soil samples. Lateritic soil samples were collected from three selected borrow pits ill Ile-Ife, the samples were separated into fines and coarse content by wet sieving through sieve size 75Jlm. Laboratory index properties. compaction and California Bearing Ratio (CBR) tests revealed that the soil samples were not suitable as sub-base material in their natura! states. but Oil reconstituting the fines and coarse contents together at different ratios. it was observed that the engineering properties of the reconstituted soils increase as the fines content reduce. Regression analysis showed linear relationship with the compaction characteristics and non linear relationship with the CBR. The study showed that the nature of coarse content and the fraction of fines present are interdependent and significant factors in lateritic soil for use as sub-base material in road construction.
Fines content. , Road Construction.
Ayodele, A.L. Et...al (2009) Effects Of Fines Content On Some Engineering Properties Of Laterite Soils In Ile-Ife, Nigeria. Journal of Engineering Research, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria. Vol. 14, (l) , p. 10 - 20.