International Journal of Academic Engineering Research (IJAER)   Year: 2020 | Volume: 4 | Issue: 11 | Page No.: 55-58 Geotechnical Swell Index, Specific Gravity, Moisture, Electrical Conductivity and Particle Distribution of River Sands for Regular Plastering in Construction Olabimtan Olabode H, Abubakar Zaid, Muhammad Rabiu.K, Aliyu Hassan, Abdulkarim Yahaya Abstract: The detrimental effects of the poor choice of sand with the potential of expansion and contraction under certain unfavorable conditions typically leads to cracks or deformations with total structural collapse. In this vein, river sand which has been a commonly used plaster sand was experimentally evaluated through sensitive geotechnical characteristics such as the free swell index (2.30 ± 0.5333) %, specific gravity (2.52), pH (7.80), moisture composition (0.87%), electrical conductivity (0.01 mS/cm) and size distribution curve of y = 273.25ln(x) - 437.73(RČ = 0.8413). These outcomes technically justify the importance of river sand as ideal plaster sand in structural construction.