Compaction of Course-Clastic Soils at an Experimental Site During the Earth Dam Construction

Abstract

This paper examines the results of laboratory and field studies on the compaction of coarse-clastic soils. In the laboratory conditions, a 300 mm diameter vibratory unit and a standard compaction device, developed by SRI Soyuzdor, were used for the soil compaction. In the field conditions, the compaction was carried out using a smooth SANY-type roller weighing 27 tons. In the laboratory, to determine the maximum density and optimal moisture content, a dry soil density – moisture content curve was plotted; the maximum density and optimal moisture values were determined according to the maximum of the obtained curve. The paper presents the results of soil compaction in the field conditions at a layer thickness of 50, 70, and 80 cm. The densities in these cases were 2.19, 2.10, and 2.04 t/m3, respectively. The soil compaction was implemented using a 27-ton roller compactor for 6–8 passes along one track. In addition, the effectiveness of the applied method of drilling and blasting in a quarry for obtaining stone material with the required fractional composition is shown