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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?

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?

Solid Waste Engineering
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter4: Mechanical Processes
Section: Chapter Questions
Problem 4.20P
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%CBR According to Iraqi Specification for different layers: Layers Compacted sub grade Sub-Base Base %CBR (lower limit) 4% 30% 35%
Transcribed Image Text:%CBR According to Iraqi Specification for different layers: Layers Compacted sub grade Sub-Base Base %CBR (lower limit) 4% 30% 35%
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) No. of Blows MDD, gm/cm³ 0 15 40 85 140 220 300 455 611 959 Table 2: MDD and CBR values for 10, 25 and 56 blows 25 2.07 29 ? 4 5 7.5 10 12.5 1120 1100 CBR% CBR% at 95% MDD 10 1.95 24 56 2.2 ?
Transcribed Image Text: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) No. of Blows MDD, gm/cm³ 0 15 40 85 140 220 300 455 611 959 Table 2: MDD and CBR values for 10, 25 and 56 blows 25 2.07 29 ? 4 5 7.5 10 12.5 1120 1100 CBR% CBR% at 95% MDD 10 1.95 24 56 2.2 ?
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