Sample

Silt and clay content (%)

Organic Impurities (ohms)

7 day strength (N/mm²)

14 day strength

(N/mm²)

28 day strength

(N/mm²)

Slump (using cone)

Workability classification

Source

1a

KBU1

12.8

0.361

22.45

32.13

37.45

9 mm

Very low

Mai Mahiu

1b

KBU1

12.8

0.361

12.93

16.55

20.73

86 mm

Medium

Mai Mahiu

2a

DC2

16.1

0.738

19.98

25.05

26.98

11 mm

Very low

Kitui

2b

DC2

16.1

0.738

16.19

19.35

24.05

69 mm

Medium

Kitui

3a

CL2

0.3

0.023

24.23

26.95

31.86

13.5 mm

Very low

Kitui

3b

CL2

0.3

0.023

16.05

19.20

24.68

58 mm

Medium

Kitui

4a

DC4

15.8

0.147

19.02

25.52

28.93

10 mm

Very low

Embu

4b

DC4

15.8

0.147

12.40

16.20

19.62

65 mm

Medium

Embu