A STUDY ON STRENGTH PROPERTIES OF CONCRETE USING SEASHELL AND EGG SHELL PARTICLES AS PARTIAL REPLACEMENT OF COARSE AGRREGATE AND FINE AGGREGATE

Now a day’s fine aggregate(sand) and coarse aggregate is very expensive, so that by using admixtures like egg shell powder and sea shells as partial replacement in fine aggregate, coarse aggregate would give better saving and environment free. Seashell contains large amount of calcium content, and the rough texture of the seashell makes suitable for the partial replacement of coarse aggregate in concrete which provides economically alternative for not only the coarse aggregate in concrete but also the materials used in concrete such as sand and cement also.Eggshell is made almost entirely of calcium carbonate (CaCO 3 ) crystals. Egg shells are the waste material and also reducing the concrete weight by partial replacement in fine aggregate .In this project I have partially replaced two types of admixtures named as egg shell powder and sea shells in cement concrete mix. Here egg shell powder and sea shells is used in cement concrete mix with a percentage variation of 5%, 10%, 15%, 20%.