1. The following table contains the results of an oedometer test on a sample of Boston Blue Clay. Initial conditions wer

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1 The Following Table Contains The Results Of An Oedometer Test On A Sample Of Boston Blue Clay Initial Conditions Wer 1 (35.39 KiB) Viewed 24 times

1. The following table contains the results of an oedometer test on a sample of Boston Blue Clay. Initial conditions were: void ratio e = 0.925, natural water content w. = 32.8%, initial seating load o'= 15 kPa, specific gravity of the solids G: = 2.78. a' (kPa) e 25 0.916 50 0.905 100 0.890 200 0.870 300 0.847 400 0.826 0.790 o,' (kPa) e 800 0.757 400 0.769 200 0.783 100 0.800 200 0.790 400 0.775 800 01743 o,' (kPa) e 1200 0.696 1600 0.655 800 0.666 400 0.681 200 0.701 100 0.723 25 0.768 600 The data are available separately in a text file "smassn07_01_data.txt" (which includes the seating load o' and e). Plot the e-log o'data (using semilog graph paper or a spreadsheet) and: (a) estimate the maximum past pressure O' using Casagrande's method (b) estimate the lab and CR (c) estimate the insitu (extend the virgin compression line to 0.42e, etc) (d) compute the compression & recompression ratios CR and RR (e) estimate the axial strain (%) due to loading from o,' = 150 to 650 kPa