Time In days*

Identification

Intial Weight at day 0

Final weight after test period

Changes in
Weight (g)

Rate of corrosion in mil per year (mpy)

7

B1

9.8742

 

9.8742

0.0000

7

B2

9.8742

10.2671

0.0000

0.0000

14

B3

10.0115

10.0115

0.0000

0.0000

14

B4

10.5622

10.5622

0.0000  

0.0000

21

B5

10.3222

10.3221

0.0001  

0.0663

21

B6

10.3824

10.3824

0.0000  

0.0000

28

B7

10.4450

10.4440

0.0010

0.4915

28

B8

10.6323

10.6313

0.0010  

0.4829

*presentation represents duplicate set ups.
Table 1: Change in weight of concrete coating material coupons placed in Iron bacterial culture for 28 days.