CBR testing results from two limestone test media. All tests were subjected to a 96 hour saturation period by submersion.
| Stone to soil ratio | Comparative effort (kJ/m3) | Moisture content (%) during compaction | Resultant dry density (kg/m3) | CBR at 2.5 mm penetration | CBR at 12.5 mm penetration | Post CBR test moisture content (%) | Surcharge used during saturation period (kg) |
|---|---|---|---|---|---|---|---|
| 4.057:1 | 592.7 | 9.5 | 1961 | 48 | 57.2 | 11.8 | 6.936 |
| 592.7 | 9.5 | 2068 | 76 | 73.5 | 11.2 | 5.71 | |
| 592.7 | 9.5 | 1946 | 49 | 45.9 | 11.5 | 5.749 | |
| 1609 | 9.9 | 2044 | 65 | 113.3 | 9.8 | 5.726 | |
| 1609 | 9.9 | 2081 | 99 | 93.9 | 10.5 | 5.748 | |
| 5.026:1 | 1609 | 9.2 | 2042 | 65.1 | 64.1 | 11.2 | 5.715 |
| 1609 | 9.2 | 2015 | 101.5 | 105.3 | 9.4 | 5.748 | |
| 1609 | 9.2 | 2025 | 125.3 | 78.6 | 11.3 | 5.737 | |
| 1609 | 9.2 | 2055 | 96.5 | 93 | 10.8 | 5.731 | |
| 1609 | 9.2 | 2005 | 95.3 | 82.4 | 9.9 | 6.936 | |
| 1609 | 9.2 | 1983 | 79 | 80 | 10.6 | 6.943 |