Abstract:
Investigation and correlation of engineering properties of soil plays a vital role for examining
the suitability of the soils for proposed project work. This paper presents the field and laboratory
test results of soils that were performed to investigation and correlation of the engineering
properties of soils found in Selamber town.
Prediction of compression index & recompression index from the laboratory test was time
consuming and laborious. The compression index of clay was determined using oedometer test.
In this research, oedometer test was conducted on remoulded clay collected from various places
in Selamber town. Laboratory tests namely liquid limit test, plastic limit test, oedometer test
have been conducted to arrive the correlations. In this study, an attempt was made to correlate
compression index (Cc) with liquid limit and plasticity index using MS EXCEL s trend line
concept. The compression index was predicted also with the help of regression analysis.
In order to classify soil, field and laboratory tests were accompanied on selected 8 pits or soil
samples which are taken from the town section randomly. The test results showed that the field
dry density ranges from 1.79g/cc to 1.95g/cc, LL ranges from 56.35% to 93.5%, PL ranges from
31.59% to 47.22%, PI ranges from 18.25% to 52.50%, OMC ranges from 24.24 to 34.15%,
MDD ranges from 1.28g/cc to 1.66g/cc, UC ranges from 102.48 to 166.76 Kpa and Cc ranges
from 0.01 to 0.07.
According to USCS and AASHTO the soil around the study area are grouped under MH & A-7
5. Cc & Cr tests were performed on eight soil samples in the laboratory, collected from various
locations in Selamber town. Investigation of the experimental data indicated that there exist a
good correlation among the actual value and predicted value of Cc & Cr. Best important
equations are proposed, applicable with sufficient accuracy for preliminary identification of
material for the local area.
The models for Cr & Cc is the function of (LL), (NMC), (Bd), (PL), (p200), i.e. Cr & Cc
=fn(LL, PL, PI, NMC, P200, Bd, OMC, MDD) i.e. Cr & Cc =fn(LL, PL, w, Bd) with
recommended equations for 3m
