Geotechnical Characterization of Alluvial Soil in Çiğli - Balatçık Region

Year 2018, Volume: 2 Issue: 2, 44 - 50, 01.12.2018

Büşra Semerci , İnci Develioglu Hasan Fırat Pulat

Abstract

The alluvial deposits have high vertical deformation, low
bearing capacity and shear strength because of their organic matter content and
high void ratio. Therefore, for the project designed on the alluvial deposit,
it is necessary to determine the geotechnical engineering properties in detail.
In this study, physicochemical engineering properties and compressibility
behavior of the alluvial soil taken from Çiğli - Balatçık in İzmir were examined.
Alluvial soil samples were taken from each 1.5 m depth for 30 m. Wet sieve
analysis, fall cone penetration, plastic limit, pH, specific gravity, organic
matter content and one-dimensional consolidation tests were conducted to
determine geotechnical index properties and compressibility parameters of
alluvial samples. The specific gravities varied between 2.62 and 2.83 and the
liquid limit values were ranged between 21.8 – 66.5%. The sieve analysis and
consistency limits tests results were evaluated according to USCS, it was
determined that the soil contains large amounts of low plasticity silt and low
plasticity clay (ML and CL). The pH value ranged between 7.65 and 8.76. The results
of one dimensional consolidation tests showed that, compressibility indices and
swelling indices were range between 0.268 – 0.490 and 0.058 – 0.158,
respectively.

Keywords

Alluvial soil, compressibility, consolidation, index properties

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