Mix ID

Specimens type

Compressive strength Age

28 days compressive strength deviation from the control pure concrete

7 days MPa

28 days MPa

P.C

Cube

18.7

19.8

-

Cylinder

17.8

18.1

-

C + 25%K

Cube

16.9

21.2

increased by 7.1%

Cylinder

14.7

17

decreased by 6.1%

25%K + 1%Sp

Cube

15.1

15.6

decreased by 21.2%

Cylinder

15.3

18.7

increased by 3.3%

25%K + 1.5%Sp

Cube

17.6

18.1

decreased by 8.6%

Cylinder

18.7

15.3

decreased by 15.5%

25%K + 2%Sp

Cube

12.4

15.2

decreased by 23.2%

Cylinder

9.1

13

decreased by 28.2%