APPROVED SOURCES

RETARDING, AND WATER REDUCING & RETARDING ADMIXTURES FOR BRIDGE DECK AND DRILLED SHAFT CONCRETE WHEN EXTENDED WORKING TIME IS REQUIRED

 

GUIDELINES FOR DOSAGE RATES WITH ANTICIPATED WORKING TIME LIMITS

 

1.    Dosage is in fluid ounces per 100 lbs. (mL/kg) of cement, fly ash, and ggbfs.

2.    Check percent of air as retarding admixtures tend to increase air contents

 

Working time limits for various cements with

NO RETARDER

Mix Temp at point of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

0

3.8

4.8

5.8

65

18

0

3.1

3.8

4.6

75

24

0

2.5

3.0

3.5

85

29

0

2.2

2.5

2.7

95

35

0

1.9

1.9

1.9

 

Working time limits for various cements with

Catexol 1000 R

Mix Temp at point  of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

4.5

5.5

6.5

 

 

3.0

5.5

6.5

7.5

 

 

4.0

7.0

8.0

9.0

 

 

5.0

 

 

 

65

18

3.0

4.8

5.5

6.3

 

 

4.0

5.6

6.3

7.1

 

 

5.0

6.8

7.5

8.3

 

 

6.0

 

 

 

75

24

3.0

5.2

5.7

6.2

 

 

4.0

5.7

6.2

6.7

 

 

5.0

6.7

7.2

7.7

 

 

6.0

 

 

 

 

 

7.0

 

 

 

85

29

3.0

4.8

5.1

5.3

 

 

4.0

5.4

5.7

5.9

 

 

5.0

6.2

6.5

6.7

 

 

6.0

 

 

 

 

 

7.0

 

 

 

95

35

3.0

4.5

4.5

4.5

 

 

4.0

5.1

5.1

5.1

 

 

5.0

5.7

5.7

5.7

 

 

6.0

6.5

6.5

6.5

 

 

7.0

 

 

 

 

 

8.0

 

 

 

 

Working time limits for various cements with

Daratard 17

Mix Temp at point  of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

 

 

 

 

 

3.0

 

 

 

 

 

4.0

 

 

 

 

 

5.0

 

 

 

65

18

3.0

 

 

 

 

 

4.0

 

 

 

 

 

5.0

 

 

 

 

 

6.0

 

 

 

75

24

3.0

4.3

4.7

5.3

 

 

4.0

6.6

7.1

7.6

 

 

5.0

7.6

8.1

8.6

 

 

6.0

 

 

 

 

 

7.0

 

 

 

85

29

3.0

4.3

4.6

4.8

 

 

4.0

5.2

5.5

5.7

 

 

5.0

6.5

6.8

7.0

 

 

6.0

 

 

 

 

 

7.0

 

 

 

95

35

3.0

3.9

3.9

3.9

 

 

4.0

4.4

4.4

4.4

 

 

5.0

5.7

5.7

5.7

 

 

6.0

 

 

 

 

 

7.0

 

 

 

 

 

8.0

 

 

 

 

Working time limits for various cements with

Delvo Stabilizer (Hydration stabilizer)

Mix Temp at point of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

65

18

2.0

4.4

5.4

6.4

3.0

4.9

5.9

6.9

4.0

5.4

6.4

7.4

5.0

5.9

6.9

7.9

6.0

6.4

7.4

8.4

7.0

7.4

8.4

9.4

8.0

8.4

9.4

10.4

75

24

2.0

3.3

4.3

5.3

3.0

3.8

4.8

5.8

4.0

4.3

5.3

6.3

5.0

4.8

5.8

6.8

6.0

5.3

6.3

7.3

7.0

5.8

6.8

7.8

8.0

6.8

7.8

8.8

85

29

3.0

3.0

4.0

5.0

4.0

3.5

4.5

5.5

5.0

4.0

5.0

6.0

 

6.0

4.5

5.5

6.5

 

7.0

5.0

6.0

7.0

 

8.0

5.5

6.5

7.5

 

 

9.0

6.5

7.5

8.5

95

35

4.0

2.7

2.7

2.7

 

 

5.0

3.2

3.2

3.2

 

 

6.0

3.7

3.7

3.7

 

 

7.0

4.2

4.2

4.2

 

 

8.0

4.7

4.7

4.7

 

 

9.0

5.2

5.2

5.2

 

 

10.0

6.2

6.2

6.2

 

 

Working time limits for various cements with

Eucon Retarder 100

Mix Temp at point  of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

 

 

 

 

 

3.0

9.6

10.6

11.6

 

 

4.0

10.4

11.4

12.4

 

 

5.0

12.3

13.3

15.3

65

18

3.0

8.2

8.9

9.7

 

 

4.0

10.0

10.7

11.5

 

 

5.0

11.7

12.4

13.2

 

 

6.0

12.9

13.6

14.4

75

24

3.0

7.5

8.0

8.5

 

 

4.0

9.9

10.4

10.9

 

 

5.0

11.9

12.4

12.9

 

 

6.0

12.5

13.0

13.5

 

 

7.0

 

 

 

85

29

3.0

6.8

7.1

7.3

 

 

4.0

9.6

9.9

10.1

 

 

5.0

11.9

12.2

12.4

 

 

6.0

11.9

12.2

12.4

 

 

7.0

 

 

 

95

35

3.0

6.8

6.8

6.8

 

 

4.0

9.9

9.9

9.9

 

 

5.0

11.8

11.8

11.8

 

 

6.0

11.8

11.8

11.8

 

 

7.0

 

 

 

 

 

8.0

 

 

 

 

Working time limits for various cements with

Plastiment

Mix Temp at point  of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

 

 

 

 

 

3.0

 

 

 

 

 

4.0

 

 

 

 

 

5.0

 

 

 

65

18

3.0

5.1

5.8

6.6

 

 

4.0

7.1

7.8

8.7

 

 

5.0

11.4

12.0

13.0

 

 

6.0

20.2

20.8

19.0

75

24

3.0

3.6

4.0

4.2

 

 

4.0

4.7

5.1

5.4

 

 

5.0

6.9

7.4

7.8

 

 

6.0

10.9

11.4

12.1

 

 

7.0

18.9

19.3

20.5

85

29

3.0

3.0

3.3

3.1

 

 

4.0

3.6

3.9

3.8

 

 

5.0

4.9

5.1

5.1

 

 

6.0

6.9

7.1

7.2

 

 

7.0

10.2

10.5

10.3

95

35

3.0

2.2

2.2

2.2

 

 

4.0

2.7

2.7

2.7

 

 

5.0

3.5

3.5

3.5

 

 

6.0

4.9

4.9

4.9

 

 

7.0

7.4

7.4

7.4

 

 

8.0

12.1

12.1

12.1

 

Working time limits for various cements with

Plastiment ES

Mix Temp at Point of discharge

Dosage

Type I/II, no

fly ash

Type I/II with fly ash

Type IS, IP with fly ash

oF

oC

fl. oz./cwt

hours

hours

hours

65

18

3.0

4.2

5.8

6.3

 

 

4.0

6.5

6.9

7.8

 

 

5.0

10.5

11.0

12.4

 

 

6.0

18.8

18.5

18.9

75

24

3.0

3.3

3.8

4.6

 

 

4.0

4.4

5.0

5.8

 

 

5.0

6.7

7.0

7.7

 

 

6.0

10.3

10.8

11.5

 

 

7.0

17.7

17.5

19.5

85

29

3.0

2.5

3.1

3.7

 

 

4.0

3.3

3.7

4.4

 

 

5.0

4.5

5.0

5.5

 

 

6.0

6.6

6.8

7.4

 

 

7.0

10.2

10.6

10.6

95

35

3.0

1.8

2.2

3.6

 

 

4.0

2.5

2.7

2.9

 

 

5.0

3.3

3.6

4.1

 

 

6.0

4.5

4.7

5.1

 

 

7.0

7.9

7.9

8.8

 

 

8.0

11.8

12.4

12.9

 

Working time limits for various cements with

Polychem R

Mix Temp at point of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

65

18

2.0

4.5

5.2

6.0

3.0

6.0

6.7

7.5

4.0

7.5

8.2

9.0

5.0

8.3

9.0

9.8

6.0

9.8

10.5

11.3

75

24

2.0

4.3

4.8

5.3

3.0

5.5

6.0

6.5

4.0

6.8

7.3

7.8

5.0

7.8

8.3

8.8

6.0

8.8

9.3

9.8

85

29

2.0

4.0

4.3

4.5

 

 

3.0

5.0

5.3

5.5

 

 

4.0

6.0

6.3

6.5

 

 

5.0

7.3

7.6

7.8

 

 

6.0

8.5

8.8

9.0

 

Working time limits for various cements with

Pozzolith 100 XR

Mix Temp at point  of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS , IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

 

 

 

 

 

3.0

 

 

 

 

 

4.0

 

 

 

 

 

5.0

 

 

 

65

18

3.0

9.0

9.7

10.5

 

 

4.0

 

 

 

 

 

5.0

 

 

 

 

 

6.0

 

 

 

75

24

3.0

6.1

6.6

7.1

 

 

4.0

7.8

8.3

8.8

 

 

5.0

9.2

9.7

10.2

 

 

6.0

 

 

 

 

 

7.0

 

 

 

85

29

3.0

5.2

5.5

5.7

 

 

4.0

6.7

7.0

7.2

 

 

5.0

8.1

8.4

8.6

 

 

6.0

 

 

 

 

 

7.0

 

 

 

95

35

3.0

4.5

4.5

4.5

 

 

4.0

6.0

6.0

6.0

 

 

5.0

7.4

7.4

7.4

 

 

6.0

 

 

 

 

 

7.0

 

 

 

 

 

8.0

 

 

 

 

Working time limits for various cements with

Pozzolith 300 R

Mix Temp at point of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

55

13

2.0

4.5

5.5

5.5

 

 

3.0

5.3

6.3

6.3

 

 

4.0

6.8

7.8

8.8

 

 

5.0

 

 

 

65

18

3.0

4.6

5.3

6.1

 

 

4.0

5.5

6.2

7.0

 

 

5.0

6.8

7.5

8.3

 

 

6.0

 

 

 

75

24

3.0

4.7

5.2

5.7

 

 

4.0

6.0

6.5

7.0

 

 

5.0

7.2

7.7

8.2

 

 

6.0

 

 

 

 

 

7.0

 

 

 

85

29

3.0

4.6

4.9

5.1

 

 

4.0

5.3

5.6

5.8

 

 

5.0

6.4

6.7

6.9

 

 

6.0

 

 

 

 

 

7.0

 

 

 

95

35

3.0

4.1

4.1

4.1

 

 

4.0

4.7

4.7

4.7

 

 

5.0

5.6

5.6

5.6

 

 

6.0

6.6

6.6

6.6

 

 

7.0

 

 

 

 

 

8.0

 

 

 

 

Working time limits for various cements with

Recover

Mix Temp at point  of discharge

Dosage Rate

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz/cwt

hours

hours

hours

75

24

0

3.2

4.2

5.2

 

 

3.0

4.8

5.8

6.8

 

 

4.0

5.5

6.5

7.5

 

 

5.0

6.3

7.3

8.3

 

 

6.0

7.6

8.6

9.6

85

29

0

2.9

3.9

4.9

 

 

3.0

4.4

5.4

6.4

 

 

4.0

4.7

5.7

6.7

 

 

5.0

5.3

6.3

7.3

 

 

6.0

6.0

7.0

8.0

95

35

0

2.2

3.2

4.2

 

 

3.0

2.8

3.8

4.8

 

 

4.0

3.0

4.0

5.0

 

 

5.0

3.7

4.7

5.7

 

 

6.0

4.5

5.5

6.5

 

Working time limits for various cements with

SikaTard 440 (Hydration Controlling Admixture)

Mix Temp at point of discharge

Dosage

Type I/II, no fly ash

Type I/II with fly ash

Type IS, IP with fly ash

F

C

fl. oz./cwt

hours

hours

hours

65

18

2.0

4.3

5.9

7.1

3.0

5.5

7.1

8.3

4.0

7.2

8.8

10.0

5.0

8.3

9.9

11.1

6.0

10.5

12.1

13.3

7.0

12.3

13.9

15.1

8.0

13.0

14.6

15.8

75

24

2.0

3.5

4.9

5.8

3.0

4.4

5.8

6.7

4.0

5.4

6.2

7.1

5.0

6.6

8.0

8.9

6.0

8.0

9.4

10.3

7.0

9.6

10.0

10.9

8.0

10.4

11.8

12.7

85

29

3.0

3.1

4.3

4.9

4.0

3.6

4.8

5.4

5.0

4.2

5.4

6.0

 

6.0

4.9

6.1

6.7

 

7.0

5.7

6.9

7.5

 

8.0

6.6

7.8

8.3

 

 

9.0

7.6

8.8

9.4

95

35

4.0

2.7

3.7

4.0

 

 

5.0

3.3

4.3

4.6

 

 

6.0

4.0

5.0

5.3

 

 

7.0

4.8

5.8

6.1

 

 

8.0

5.7

6.7

7.0

 

 

9.0

6.7

7.7

8.0

 

 

10.0

7.8

8.8

9.1