Table A7 (cont'd). Compressive strength. Task 1D cured at various temperatures.
d. 20C
c. 10C
Compressive strength (psi)
Compressive strength (psi)
Testing age (days)
Testing age (days)
Mix no.
7
14
28
Mix no.
7
14
28
1
N/A
N/A
N/A
1
N/A
N/A
N/A
2
N/A
N/A
N/A
2
N/A
N/A
N/A
3
0
1325
1438
3
664
247
98
4
1307
2726
2895
4
162
126
667
5
N/A
N/A
N/A
5
N/A
N/A
N/A
6
N/A
N/A
N/A
6
N/A
N/A
N/A
7
355
1261
2165
7
0
39
123
8
0
1038
2320
8
0
0
691
9
N/A
N/A
N/A
9
N/A
N/A
N/A
10
N/A
N/A
N/A
10
N/A
N/A
N/A
11
N/A
N/A
N/A
11
N/A
N/A
N/A
12
N/A
N/A
N/A
12
N/A
N/A
N/A
13
N/A
N/A
N/A
13
N/A
N/A
N/A
14
N/A
N/A
N/A
14
N/A
N/A
N/A
15
N/A
N/A
N/A
15
N/A
N/A
N/A
16
N/A
N/A
N/A
16
N/A
N/A
N/A
17
N/A
N/A
N/A
17
N/A
N/A
N/A
18
N/A
N/A
N/A
18
N/A
N/A
N/A
19
N/A
N/A
N/A
19
N/A
N/A
N/A
20
N/A
N/A
N/A
20
N/A
N/A
N/A
Table A8. Chemical composition of admixtures tested in Phase 1, Task D.
Mix
% Solids
Dosage
Slump
no.
Antifreeze admixture formulation
in sol.
(% CWT)
w/c Ratio
(cm)
Remarks
1
Control
0
0
0.48
5
2
K2CO2 + lignosulfonate
30
6/0.5
0.43
7
10% water reduction.
3
K2CO2 + lignosulfonate
30
6/1.5
0.43
19
10% water reduction.
4
K2CO2 + lignosulfonate
30
6/1.5
0.38
1
20% water reduction.
5
Control
0
0
0.48
5
6
Ca(NO2)2 + NaNO2
30
1.5/1.5
0.48
5
7
Ca(NO2)2 + NaNO2
30
3/3
0.48
6
8
Ca(NO2)2 + NaNO2
30
5/5
0.48
4
9
N/A
N/A
N/A
N/A
N/A
10
N/A
N/A
N/A
N/A
N/A
11
N/A
N/A
N/A
N/A
N/A
12
N/A
N/A
N/A
N/A
N/A
13
N/A
N/A
N/A
N/A
N/A
14
N/A
N/A
N/A
N/A
N/A
15
N/A
N/A
N/A
N/A
N/A
16
N/A
N/A
N/A
N/A
N/A
17
N/A
N/A
N/A
N/A
N/A
18
N/A
N/A
N/A
N/A
N/A
19
N/A
N/A
N/A
N/A
N/A
20
N/A
N/A
N/A
N/A
N/A
28
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