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Table 6 Variation of California Bearing Ratio values with cement content for Ekenkpon shale soil (28 days soaked)

From: Occurrence of shale soils along the Calabar-Itu highway, Southeastern Nigeria and their implication for the subgrade construction

 

0 % Ordinary Portland cement

1 % Ordinary Portland cement

2 % of Ordinary Portland cement

3 % Ordinary Portland cement

4 % Ordinary Portland cement

5 % Ordinary Portland cement

CBR values after soaking (%)

15

10.5

20.5

25.8

49

Water Content before soaking (%)

16.5

18

18.1

18.2

16.1

Water content after soaking (%)

22.9

23.1

22.4

19.1

Maximum dry density (MDD) (kg/m3)

1700

1810

1710

1660

Optimum moisture content (OMC) (%)

16.6

19.8

18.12

18.11