Table 3 Concrete flexural strength under different substitution rates.

From: Effect of biological shells aggregate on the mechanical properties and sustainability of concrete

Shell replacement rate/%

Flexural strength ff (MPa)

0 (Standard Group)

6.5

6.25

5.25

6.5

6.5

5.75

10

7.5

9.5

14.25

7.75

8

7.5

30

9.75

9.75

9.75

8.5

9.25

9

50

9.75

10

10

10.25

10.5

10