Figure 8. Comparison of compressive strength of concrete with percentage replacement of coarse aggregates by crushed coconut shells at 7, 28 and 90 curing days.

From

Mechanical and Bond Properties of Lightweight Concrete Incorporating Coconut Shell as Coarse Aggregate

Ismail Saifullah, Md. Mahfuzur Rahman, Abdul Halim, Md. Rafiue Islam

American Journal of Civil Engineering and Architecture. 2019, 7(1), 38-46 doi:10.12691/ajcea-7-1-5