Investigation of Partial Replacement of Fine Aggregates by Crushed Oyster Shells in Concrete Interlocking Paving Block Production

Concrete Interlocking blocks are becoming popular a paving material for pavements, parking areas, rural roads, walk ways, domestic gardens, etc in every part of the world due factors like fast assembly, possibility of easy replacement, enhanced rainwater infiltration, easy handling, fast production, aesthetically pleasing appearance, and availability in wide variety of colours, patterns, models. In the aquaculture industry, oysters are enjoyed as a meal in many parts of the world, the level of consumption and preferred preparations can vary significantly based on regional tastes and culinary traditions. With this global trend, oyster is becoming a popular meal especially in start class hotels in Sri Lanka as well. The shells of oysters, which is the remaining part when it consumes oyster as a meal, are presently disposed to the environment as a waste product. However, various studies have shown the possibility of using crushed oyster shall as fine aggregates for concrete and concrete products. This study has focused on studying usage of crushed oyster shells to partially replace fine aggregates interlocking paving block production through an experimental study. As per results of extensive study done on these aspects, it was found that crushed oyster shells can be used to partially replace fine aggregates in concrete interlocking paving blocks production up to ۲۰% (of weight of fine aggregates) without affecting to desired strength (compressive and flexural strengths) and mechanical characteristics ( water absorption, skid resistance, density) of paving blocks

کلیدواژه ها:

Interlocking Concrete Paving Blocks ، oyster shells ، Fine aggregates ، Compressive strength ، Flexural Strength