Sediment Quality Assessment and Its Engineering Significance: A Geographical and Laboratory-Based Study of Raidak-II River, India

Author(s)	Dr. Debasish Talukdar, Dr. Anup Sen, Dr. Tapan Kumar Das
Country	India
Abstract	Riverbed sediments play a crucial role in construction and environmental sustainability. This study presents a comprehensive assessment of sediment quality from Raidak-II, one of the major rivers of the Eastern Dooars region, India, integrating field observations with laboratory-based analyses. Key parameters such as particle size distribution (fineness modulus), compressive strength of sand-cement mortar, and specific gravity were evaluated. The results indicate significant spatial variation in sediment characteristics across upper, middle, and lower river segments. Moderately graded sand from middle segments demonstrates optimal suitability for construction purposes. Compressive strength values exceeded standard thresholds (20 MPa), while specific gravity values remained within acceptable limits (2.52–2.65). The study highlights the engineering viability of regional sediments and underscores the need for sustainable extraction practices to prevent geomorphological degradation.
Keywords	Sediment quality, River sand, Fineness modulus, Compressive strength, Specific gravity, Eastern Dooars, Sustainable mining
Published In	Volume 17, Issue 2, April-June 2026
Published On	2026-05-10

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