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M p ..a <br />PROJECT: HB Project - 00486 -0003 Bowie Mine - GOB #3 JOB NO: 1351900116 <br />LOCATION: Paonia, CO WORK ORDER NO: 2 <br />MATERIAL TYPE: Native Soils LAB NO: 2 <br />SAMPLE SOURCE: Bowie Mine Gob #3 DATE SAMPLED: 3/29/2014 <br />SAMPLE PREPARATION: Remolded to 90% of Max Dry Density and + -2% of Optimum Moisture <br />Max dry density D698A 89.3 pcf @ 15.2% opt. moisture <br />CONSOLIDATED UNDRAINED TRIAXIAL COMPRESSION TEST FOR COHESIVE SOILS (ASTM D4767) <br />Specimen <br />Specimen <br />Initial Specimen Data <br />A <br />B <br />C <br />Test Data <br />A <br />B <br />C <br />Water Content ( %) <br />14.6% <br />14.6% <br />14.3% <br />B Value <br />1.00 <br />1.00 <br />1.00 <br />Height (cm) <br />14.40 <br />14.41 <br />14.40 <br />Total Back Pressure (psi) <br />25.0 <br />25.1 <br />25.0 <br />Diameter (cm) <br />7.21 <br />7.21 <br />7.21 <br />Eff. Consolidation Stress (psi) <br />30.0 <br />50.0 <br />70.1 <br />Dry Density (pcf) <br />80.5 <br />80.4 <br />80.7 <br />Time 50% Primary Consol. (min) <br />3.0 <br />1.1 <br />4.8 <br />Void Ratio <br />0.63 <br />0.63 <br />0.62 <br />Strain Rate (% /min) <br />0.18 <br />0.18 <br />0.18 <br />Saturation % <br />49% <br />49% <br />48% <br />Axial Strain at Failure ( %) <br />14.80 <br />14.77 <br />14.79 <br />Saturation Method(Wet/Dry) <br />Dry <br />Dry <br />Dry <br />Excess Pore Pressure, u (psi) <br />26.33 <br />44.73 <br />61.31 <br />After Consolidation <br />A <br />B <br />C <br />Deviator Stress, Ao (psi) <br />14.38 <br />18.12 <br />23.39 <br />Water Content ( %) <br />22.2% <br />21.9% <br />21.5% <br />Total Major Principal Stress, <br />Area (Cnt2) <br />38.35 <br />38.20 <br />37.93 <br />of (psi) <br />44.32 <br />68.13 <br />93.35 <br />Height (cm) <br />1193 <br />13.95 <br />13.85 <br />Total Minor Principal Stress, <br />Dry Density (pcf) <br />88.5 <br />88.8 <br />90.3 <br />Q3 (psi) <br />29 94 <br />50.01 <br />69.96 <br />Void Ratio <br />0.48 <br />0.48 <br />0.45 <br />Effective Major Principal Stress, <br />Saturation % <br />97% <br />97% <br />100% <br />01, (psi) <br />17 99 <br />23.40 <br />32.04 <br />Effective Minor Principal Stress, <br />Qg (psi) <br />3.61 <br />5.28 <br />8.65 <br />Specimen A - Effective Stress <br />- - - Specimen B - Total Stress <br />25.0 <br />20.0 <br />CL <br />y 15.0 <br />10.0 <br />d <br />U) 5.0 <br />0.0 <br />0.00 <br />Mohr Stress Circles <br />- -• Specimen A - Total Stress <br />Specimen C- Effective Stress <br />Specimen B - Effective Stress <br />- - - Specimen C - Total Stress <br />10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 <br />Normal Stress (psi) <br />REVIEWED BY I�V <br />