Author(s) :

Arya M. S

Conference Name :

International Conference on scientific innovations in Science, Technology, and Management (NGCESl-2023)

Abstract :

Efforts are made to incorporate by-products and their wastes from different industries as
alternatives in concrete to reduce the need of virgin materials for construction purpose. Cement
production is highly intensive and production cause tons of carbon dioxide (CO2) emission
every year. To overcome this crisis, pozzolanic material such as silicafume is deployed. Also,
the exploitation of nature by over consumption of aggregate is increasing day by day. Fishery
waste such as cockle seashell which is usually dumped or landfilled without any re-use value
can be used as a partial solution for ecological, economical and environmental problems.
Experimental investigations have been carried out on the use of cockle seashell as aggregate
replacement materials in concrete. Seashells were utilised as partial coarse aggregates in
concrete with different percentages as 10%, 15%, 20% and 25% and silicafume with different
percentages as 10%, 12%, 14% and 15% of cement. This study aims to evaluate the strength
properties, durability and quality of concrete using Ultrasonic Pulse Velocity (UPV) test of
normal and modified mix. Strength properties such as compressive strength, split tensile
strength and flexural strength were conducted for normal and modified mix. However, proper
treatment such as heating at a high temperature is desirable for a better quality seashell. This
presents an overview of behaviour of the cockle seashells and silicafume in concrete. It shows
a higher mechanical strength and better durability compared to conventional concrete.

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