* Coconut Shell can be grouped under light weight aggregate because their 28 days dry densities are less than 2000kg/m3.
* From economic point of view, CS are low cost aggregate.
* CS are more suitable as low strength giving aggregate when used to replace common coarse aggregate in concrete production.
* CS has more resistance against crushing, impact and abrasion compared to crushed granite aggregate.
* Addition of CS decreases workability. The use of Flyash may increase workability but can decrease the strength.
* The amount of Cement may be more when CS are used as an aggregate in the production of concrete compared to conventional aggregate concrete.
