final bid specs 09328.pdf - Freese and Nichols, Inc.

Attachment B
Documentation of Average Strength – Trial Mixtures
(ACI 301, 4.2.3.4.b)
A. Summary of test record(s):
Trial
Mix No.
No. of Test
Cylinders
7-day Tests
Strength
(psi)
28-day Tests
No. of Test
Cylinders
Stren
gth
(psi)
Water-
Cementitious
Materials
Ratio
Slump
(in)
Air
Content
(%)
Temprature
(°F)
B. Maximum water-cementitious materials ratio ________
• Provide an interpolation calculation or plot of strength versus water-cementitious
materials ratio.
C. Submit the following data for each mix:
1. Brand, type and amount of cement.
2. Brand, type and amount of each admixture.
3. Amount of water used in trial mixes.
4. Proportions of each aggregate material per cubic yard.
5. Gross weight per cubic yard.
6. Measured slump.
7. Measured air content.
8. Compressive strength developed at 7 days and 28 days, from not less than three
test cylinders cast for each 7 and 28 day test.
Cast-in-Place Concrete 03 30 00 - 20
DPR09328