Question Two: The laboratory test data for a modified Proctor test and CBR test for (crushed limestone) are given below; Find the CBR value at 95% of MDD after necessary corrections, for the tested sample depending on Iraqi Specifications, R6 (after drawing the curve and stating your answer about which sort of sub-bases materials are used in highway construction? Table 1: CBR test data @56 blows 56 Blows Penetration (mm) 0 0.5 1 1.5 2 25 3 Load (Kg) 4 5 1.5 10 12.5 0 15 40 85 140 220 300 455 611 959 1120 1100 Table 2: MDD and CBR values for 10, 25 and 56 blows No. of Blows 10 25 56 MDD, gm/cm 1.95 2.07 2.2 CBR% 24 29 ? CBR% at 95% MDD ?