Charles River Dam-Smelt Brook Local Protection Project, New England Division

 

Charles River Dam, Boston, Mass.


Smelt Brook Local Protection, Weymouth, Mass.

Formula Number

Mix 1

Mix 1

Mix 2

Mix 2

Mix 3

Mix 3

Tag Identification Number1

7, 8, 9

10, 11, 12

13, 14, 15

16, 17, 18

1, 2, 3

4, 5, 6

N.E.D. nomenclature

--

--

--

--

2A, 2B, 2C

1A, 1B, 1C

Date of fabrication

10/6/75

10/7/75

10/17/75

10/22/75

9/5/75

8/14/75

Slump, in.

2.50

2.50

3.00

2.50

3.00

3.00

Air Content, %

5.2

5.0

5.7

4.3

3.0

4.2

Concrete Temperature, °F

62

62

75

66

78

72

Unit weight of fresh concrete, pcf

145.3

--

144.7

145.0

143.63

142.97

Compressive cylinders

229-A, C, D

230-A, C, D

241-A, C, D

244-A, C, D

43-A, C, D

40-A, C, D

Compressive Strength, psi

7-day

28-day

28-day

 

3890

4870

4955

 

3820

5095

5180

 

3855

4420

4670

 

3960

5375

5375

 

2810

3940

4020

 

4310

5440

536

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