Determination of soil parameters using in situ soil testing for the design of highway

Abstract

Determination of soil parameters of any soil is very important before executing highway construction as it gives detailed information of the soil and its various properties which will be useful in the design of the pavement. The paper discusses determination of soil parameters of the ongoing construction work, which includes grain size analysis, consistency test, compaction test, 4 day soaked CBR at 3 energy levels, and field details. Boreholes drilling was done using augers. Using rotary diamond (core) drilling equipment, cores were drilled into the bedrock, and bedrock core samples are then extracted from the cores. Test pits were excavated with hydraulic excavators. This paper summarizes the different geotechnical design parameters for the subsurface conditions at the site to support the highways. A review of rotary drilling and rock coring in terms of the correct handling, transportation, and storage of soil and rock samples in preparation for laboratory testing is also given.