UNIFORMITY OF RECONSTITUTION OF LIQUEFIABLE SAND SPECIMEN USING A RAINER BOX SYSTEM

Experimental laboratory-scale liquefaction models aim to investigate the behavior of soils, particularly non-cohesive soils with liquefaction potential. Achieving the desired density in reconstituted soil beds is vital for conducting geotechnical modeling tests. The first stage is that the soil samples must be reconstructed to approach their original state. It assesses parameters such as the densities, moisture content, and uniformity of the sand specimens obtained from each setup. The dry density of soil samples is an important parameter used in geotechnical engineering for designing structures in liquefiable sands. This paper describes the efforts to create a sand Rainer box that facilitates specimen reconstitution using the air pluviation method. The Rainer system used in this laboratory was designed to control the velocity of sand rain using a perforated plate. The diameter of the perforated plate is 0.6 mm, and liquefiable sand samples with 0.15 to 0.5 mm particle size were used. The procedure entailed combining sand and water in a container, allowing the sand to settle, and eliminating excess water. To control the uniformity of relative density, use a mold with three positions in a box plan. It is placed in the middle and the corners in a box plan. The Sand Rainer Box produced the reconstituted specimen with less than 8% error for horizontal and 5% for vertical uniformity. This dependable accurately estimates relative density when preparing sand samples for repeated laboratory testing. The research illustrates the effectiveness of the Rainer system in producing sand specimens with consistent characteristics.