Table 10: Average of three tensile strength of a cylindrical sample.

Mixed code

 IMSW

fly ash

OPC

Average failure loads in kN at 28th curing days

Average tensile strength

in MPa at 28th curing days

EBCS-2, 1995

requirements

RF@0

0%

100%

263.01

3.723

3.4-5.1

RF@5

5%

95%

254.14

3.597

3.3-4.9

RF@10

10%

90%

237.47

3.361

3.1-4.7

RF@15

15%

85%

205.39

2.907

2.9-4.4

RF@20

20%

80%

180.37

2.553

2.8-4.2

RF@25

RF@30

25%

30%

75%

70%

175.77

165.673

2.488

2.345

2.7-4.1

2.4-3.6

RF@35

35% 

65%

106.75

1.511

2.2-3.3

Note: RF@0 means Reppie Fly ash at zero percent, OPC means Ordinary Portland Cement.