Compressive Behaviour of Green Concrete Partially Reinforced with Dry Coconut Shell Aggregates as a Replacement of Coarse Aggregates

In this work, coconut-shells were reinforced as a partial replacement of the coarse aggregate in concrete to make a lightweight concrete without compromising the properties of concrete. The coconut-shell aggregates with different percentages 5%, 10%, 15%, and 20% of coarse aggregate were added to make coconut-shell cement concrete (M25) along with plain cement concrete without reinforcement of coconut shell aggregates. Main tests on concrete like Vikat test, density computation, and slump test were done. However, the main aim was to investigate the compressive behaviour of concrete. A total of 50 samples (10 cm cubes) were prepared and tested for compressive behaviour on 14^th day and compared with that on 28^th day. Concrete with 10% coconut-shell produced the best results. The density computation of concrete reveals that reduction in weight of concrete could be achieved appropriately. On the basis of the results, it can be concluded that coconut-shell aggregates with 5% course aggregate could be used for primary construction components. However, other concrete with increased percentage of coarse aggregate could gratify the necessity for secondary construction components.