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 |