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Advances in Materials Science and Engineering
/
2014
/
Article
/
Tab 5
/
Research Article
The Effect of Variation of Molarity of Alkali Activator and Fine Aggregate Content on the Compressive Strength of the Fly Ash: Palm Oil Fuel Ash Based Geopolymer Mortar
Table 5
Development of compressive strength for different mix designs.
Designation
Compressive strength (N/mm
2
)
Three days
SD
Seven days
SD
14 days
SD
28 days
SD
M 1
20.75
0.63
23.34
0.34
26.83
0.23
27.80
0.40
M 2
20.04
0.28
22.03
0.97
24.02
0.35
25.10
0.50
M 3
18.14
0.22
19.91
0.20
24.67
0.13
25.70
0.20
M 4
19.14
1.07
21.01
0.20
24.19
0.51
25.20
0.60
M 5
17.59
1.10
19.56
0.54
22.33
0.86
23.40
0.80
M 6
14.75
1.18
17.76
0.63
19.36
0.25
20.50
0.70
M 7
21.56
0.14
23.02
0.39
25.03
0.23
26.10
0.25
M 8
21.45
1.00
22.90
1.21
24.90
0.97
26.00
1.06
M 9
20.81
0.31
22.50
0.31
25.00
1.12
26.10
0.58
M 10
17.22
0.26
20.08
0.26
22.94
0.77
24.00
0.43
M 11
21.28
0.64
23.10
0.70
24.92
0.75
26.00
0.60
M 12
14.46
0.69
16.88
0.72
20.72
0.71
21.80
0.70