Abstract:
In the flexible pavements sub-grade is the undermost
layer for pavement structure constructed on it and used to resist
traffic load. Hence, subgrade geotechnical behaviors are
considered as measuring parameters of the pavement design and
performance. But, here Arbaminch-Chencha road is
constructed as gravel road twelve years so far without any
geotechnical investigation.
The aim of this research is geotechnical investigation and effect
of moisture content on CBR of the subgrade soil of ArbaminchChencha road. This is to classify and characterize this subgrade
according to its geotechnical properties, to identify effect of
moisture on subgrade CBR for selected three soil classes.
To achieve these objectives, seventeen representative tes
