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Soil Compaction and CBR Test Data

The CBR test measured the soil's dry density, moisture content, and penetration resistance at different levels of compaction. Testing showed the soil reached maximum dry density of 2.236 g/cm3 at 6.8% optimum moisture content. CBR values were measured at 15.18% at 98% compaction and 90.02% at 100% compaction. The average moisture content was 6.631%. The CBR value at 98% of maximum dry density after 96 hours was 76.1%.

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CE Passaj
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208 views1 page

Soil Compaction and CBR Test Data

The CBR test measured the soil's dry density, moisture content, and penetration resistance at different levels of compaction. Testing showed the soil reached maximum dry density of 2.236 g/cm3 at 6.8% optimum moisture content. CBR values were measured at 15.18% at 98% compaction and 90.02% at 100% compaction. The average moisture content was 6.631%. The CBR value at 98% of maximum dry density after 96 hours was 76.1%.

Uploaded by

CE Passaj
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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Republic of Yemen

Ministry of Public Works & Highways


General corporation for roads & bridges ‫وزارة األشغال العامة والطرق‬
General Department ForCentral laboratory ‫المؤسسة العامة للطرق والجسور‬
Sana'a ‫االدارة العامة المختبر المركزي‬
202286: ‫صنعاء ت‬
The California Bearing Ratio (CBR) AASHTO DESIGNATION: T 193 -99

Max. Dry Density: 2.236 Optimum Moistrue Content : 6.800


98 % of max Dry Density 2.191
No. of Blows 10 30 65

Dail Reading Knf


30.00

Volume of Mould g/cm³ 2124 2124 2124


f(x) = 9.58642819322227 ln(x) + 3.13453165611462
Mould + Wet Soil g 10888 10914 11257
25.00
Mould g 6354 6164 6182
Wet. Soil g 4534 4750 5075
Wet Density g/cm³ 2.135 2.236 2.389
20.00
Dry Density g/cm³ 1.999 2.094 2.237
Compaction % 89.389 93.647 100.055
Expansion % 15.00
Final Dial Reading f(x) = 5.24876038828221 ln(x) + 1.23564801511941
Initial Dial Reading
Swell 10.00
Expansion %
TEST DATA
Penetration mm Cont. Dial Reading 5.00
f(x) = 1.75618012259971 ln(x) + 0.400534452792025
0.025 in. 0.6 0.60 1.90 3.80
0.050 in. 1.3 0.80 2.40 4.80 Penetration mm
0.075 in. 1.9 1.20 3.60 7.20 0.00
0 2 4 6 8 10 12 14
0.100 in. 2.5 1.50 4.50 9.00
0.125 in. 3.2 1.90 5.70 11.40
0.150 in. 3.8 2.30 6.80 13.60
140
0.175 in. 4.4 2.60 7.90 15.80
0.200 in. 5 2.80 8.40 16.80
120
0.250 in. 6.4 3.80 11.40 22.80
CBR Value %

0.300 in. 7.5 4.20 12.60 25.20


100
0.400 in. 10 4.90 14.70 29.40
0.500 in. 12.5 5.60 16.80 33.60 f(x) = 664.422034638868 ln(x) − 445.109232275684
80
CBR % 15.18 45.66 90.02

60
Tin No. 26 33 28
Tin + Wet Soil g 214 192 278
40
Tin + Dry Soil g 202 182 263
Moisture g 12 10 15
20
Tin g 31 28 28
Dry Soil g 171 154 235 Dry Density as Moulded %
0
Moisture Content % 7.018 6.494 6.383
1.900 1.950 2.000 2.050 2.100 2.150 2.200 2.250 2.300
Average M/C 6.631

Remarks: The CBR Value at 98.00 % of Maximum Dry Density after 96 hours is 76.1

Lab. Tech. Mat. Eng. Gen. Manager

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