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Charles River Dam-Smelt Brook Local Protection Project, New England Division |
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Charles River Dam, Boston, Mass. |
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Formula Number |
Mix 1 |
Mix 1 |
Mix 2 |
Mix 2 |
Mix 3 |
Mix 3 |
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Tag Identification Number1 |
7, 8, 9 |
10, 11, 12 |
13, 14, 15 |
16, 17, 18 |
1, 2, 3 |
4, 5, 6 |
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N.E.D. nomenclature |
-- |
-- |
-- |
-- |
2A, 2B, 2C |
1A, 1B, 1C |
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Date of fabrication |
10/6/75 |
10/7/75 |
10/17/75 |
10/22/75 |
9/5/75 |
8/14/75 |
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Slump, in. |
2.50 |
2.50 |
3.00 |
2.50 |
3.00 |
3.00 |
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Air Content, % |
5.2 |
5.0 |
5.7 |
4.3 |
3.0 |
4.2 |
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Concrete Temperature, °F |
62 |
62 |
75 |
66 |
78 |
72 |
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Unit weight of fresh concrete, pcf |
145.3 |
-- |
144.7 |
145.0 |
143.63 |
142.97 |
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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 |
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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 |