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Table 6 Rating of concrete staining and reinforcing steel after 6 months.

From: Laboratory Evaluation of Select Methods of Corrosion Prevention in Reinforced Concrete Bridges

Specimen #

Treatment

Individual bar

BarAvg.

Surface staining

Average combined rating

A

B

C

D

E

1 and 2

TSZ

0

2.5

2.5

2.5

0.5

1.6

2

3.6a

3 and 4

TSZ w/EP-C

0.5

2

0.5

1

0

0.8

0

0.8

5 and 6

EA-A w/A-C

3.5

3

3

2.5

2.5

2.9

3.5

6.4

7 and 8

EA-A

3.5

4

3.5

4

3.5

3.7

4

7.7

9 and 10

EA-B

4

4

4

4

4

4.0

4

8.0

11 and 12

T-SS

0

0.5

0.5

0.5

0.5

0.4

0

0.4

13

A-C

4

2

2

2

2

2.4

3

5.4

14

EP-C

4

1

1

2

1

1.8

2

3.8

15 and 16

Control

4

4

4

4

4

4.0

4

8.0

  1. aThe connection between the thermal sprayed zinc and reinforcing steel of Specimen #2 failed after 4 ½ months of testing