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 cOorrections, 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 0.5 115 15 40 85 25-34 140 220 300 | 455 611 959 Penetration(mm) 2. 5 15 10 12.5 Load (Kg) 1120 1100 Table 2: MDD and CBR values for 10, 25 and 56 blows

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 cOorrections, 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 0.5 115 15 40 85 25-34 140 220 300 | 455 611 959 Penetration(mm) 2. 5 15 10 12.5 Load (Kg) 1120 1100 Table 2: MDD and CBR values for 10, 25 and 56 blows

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The laboratory test data for a modified Proctor test and CBR test for (crushed
limestone) are given below; Find the CBR valuc 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
O 0.5 1 1.5 2. 25-3
0 15 40 85 140 220 300 455 611
Penetration(mm)
4
5
15
10
12.5
Load (Kg)
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

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