1.7 PROBLEMS 1.7.1 Given below are raw data of laboratory compaction test on material to be used as subgrade. Complete the table and plot the required graph to determine the MDD and OMC : material tested. Compaction Data: Mass of mould + compacted sample (m2) g 7370 7360 7560 7610 Mass of mould (mı), 5740 5640 5700 5750 Mass of compacted sample (m3 = m2 - m1) g Bulk Density, p= m3/V, Mg/m3 Dry Density, pa = 100p/(100 + w), Mg/m3 Note: V = volume of mould 934 ml w = moisture content (%) Moisture content data: Mass of container (m1) g 34.51 33.61 33.90 32.63 Mass of container + wet sample (m2) 95.13 95.63 97.66 98.87 Mass of container + dry sample (m3) g 85.20 83.81 82.93 82.39 Mass of moisture (mą = m2 - m3) g Mass of dry sample (m5 = m3 - mı) g Moisture content, w = 100 x (m4/m5) % Dry Density, Mg/cu.m
1.7 PROBLEMS 1.7.1 Given below are raw data of laboratory compaction test on material to be used as subgrade. Complete the table and plot the required graph to determine the MDD and OMC : material tested. Compaction Data: Mass of mould + compacted sample (m2) g 7370 7360 7560 7610 Mass of mould (mı), 5740 5640 5700 5750 Mass of compacted sample (m3 = m2 - m1) g Bulk Density, p= m3/V, Mg/m3 Dry Density, pa = 100p/(100 + w), Mg/m3 Note: V = volume of mould 934 ml w = moisture content (%) Moisture content data: Mass of container (m1) g 34.51 33.61 33.90 32.63 Mass of container + wet sample (m2) 95.13 95.63 97.66 98.87 Mass of container + dry sample (m3) g 85.20 83.81 82.93 82.39 Mass of moisture (mą = m2 - m3) g Mass of dry sample (m5 = m3 - mı) g Moisture content, w = 100 x (m4/m5) % Dry Density, Mg/cu.m
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1.7
PROBLEMS
Given below are raw data of laboratory compaction test on material to be used as lower
subgrade. Complete the table and plot the required graph to determine the MDD and OMC for the
1.7.1
material tested.
Compaction Data:
Mass of mould + compacted sample (m2)
g
7370
7360
7560
7610
7390
Mass of mould (m1),
g
5740
5640
5700
5750
5650
Mass of compacted sample (m3 = m2 - mı)
Bulk Density, p = m3/V,
Mg/m3
Dry Density, pa = 100p/(100 + w),
Mg/m3
Note:
V = volume of mould 934 ml
w = moisture content (%)
Moisture content data:
Mass of container (m1)
34.51
33.61
33.90
32.63
33.72
Mass of container + wet sample (m2)
g
95.13
95.63
97.66
98.87
98.65
Mass of container + dry sample (m3)
g
85.20
83.81
82.93
82.39
79.60
Mass of moisture (m4 = m2 - m3)
g
Mass of dry sample (m5 = m3 - m1)
Moisture content, w = 100 x (m4/m5)
%
Moisture Content, %
Dry Density, Mg/cu.m
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