Soil Consolidation and Seepage Analysis
Added on 2020-03-23
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Consolidation Computations 1CONSOLIDATION COMPUTATIONSNameProfessor UniversityCity, StateDate
Consolidation Computations 2Consolidation Computations 1.A conventional oedometer experiment is performed on a saturated clay sample taken from the depth of 4m from the land of Brisbane. Height of the ring is 20mm. If the specific gravity of the soil is determined to be 2.7 and the final water conent of the soil (after completing the consolidation tests) is measured at 38%. a)Plot the effective stress (log scale) versus void ratio. Loading (kg)Dial Gauge Readings15.225.145.114.13.472.342.2226.6836.4356.346.226.15.995.88549.859.639.529.4319.3059.098.95812.15511.89511.8111,711.5511.4511.291615.2515.0815.014.914.7814.6814.553218.3318.218.0417.9217.7717.6717.52 h= 4mheight of ring(y) = 20mmGc=2.7Wc=38%γw= 9.81 kN/m3Thus the void ratio can be calculated using the formula\e=GzWc=2.7∗0.38=1.026Thus the saturated weight of the soil can be obtained using the formula:γsat=(Gz+e1+e)γw=(2.7+1.0261+2.7)9.81γsat=18.041kN/m3The effective stress of the soil through the formulau=σ+σ'
Consolidation Computations 3u=[hγw−(h+y)γsat]−¿u=[(4∗9.81)−(4+0.02)18.041]−[4∗9.81+(4+0.02)9.81]u=33.088kN/m3And the displacement is obtained by multiplying the dial gauge readings with a factor of 0.01Loading (kg)Displacement(mm)10.05220.05140.05110.0410.03470.02340.022220.066830.064350.06340.06220.0610.05990.0588540.09850.09630.09520.094310.093050.09090.089580.121550.118950.11810.1170.11550.11450.1129160.15250.15080.150.1490.14780.14680.1455320.18330.1820.18040.17920.17770.17670.1752To change dial gauge readings to displacement, a correction factor of 0.01 is used on the dial gauge readings. Loading(kg)Displacement(mm)AverageDisplacement10.05220.05140.05110.0410.03470.02340.02220.0394285720.066830.064350.06340.06220.0610.05990.058850.0623614340.09850.09630.09520.094310.093050.09090.08950.0939657180.121550.118950.11810.1170.11550.11450.11290.11692857160.15250.15080.150.1490.14780.14680.14550.14891429320.18330.1820.18040.17920.17770.17670.17520.17921429Hs=12.7∗1∗0.00155=238.2397Thus eo is given by
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