Experimental Investigation of Concrete Pavers by Partial Replacement of Fine Aggregate with Crushed Seashell

Globally, pavers are widely used for gardening and sidewalks, which creates a large need for concrete ingredients including cement, fine and coarse aggregate, and fine aggregate. Because of the possibility of depletion, the increased demand for fine aggregate—especially that which comes from rivers—raises environmental issues. In this work, we conducted a study to preplace partially fine aggregate with seashells that had been reduced to a maximum size of 4.75 mm or 4730 micron. The IS 10262 method was applied in developing the mix design for the M20 grade concrete. Next, fine aggregate was replaced at 10, 20, 30, 40, and 50 percent to cast into the pavers, mixed with supplementary admixtures and without contributed additional considerations towards curing time for commercial use. All specimens were cured for a 28-day time span and then measured for compressive strength. These findings conveyed that compressive strength was achieved at 40% fine aggregate replacement with shells powder.