ASHISH K 
NADHA FATHIMA K 
SAFWATH MINNA ISMAIL 
SANDRA P 

Dredged material generated from dredging activities creates disposal and environmental
challenges, while excessive use of natural river sand leads to resource depletion. This study
examines the feasibility of using dredged material as a replacement for fine aggregate in cement
brick production. Dredged material is collected from cheruvathur harbour and bricks were
prepared by replacing natural sand with dredged material in varying proportions (20%, 40%, 60%,
80%, 100%) and tested for compressive strength and water absorption. The results indicate that
dredged material improves sustainability by reducing dependence on natural sand and minimizing
waste, making it suitable for eco-friendly brick production. The findings also demonstrate that an
optimum replacement level can achieve satisfactory strength and durability for practical
applications. Thus, the use of dredged material presents a viable and sustainable alternative for
non structural applications.

Keywords: Dredged material, Cement bricks, Fine aggregate replacement, Compressive strength,
Water absorption, Sustainable construction