Analytical Chem Soil HW Solutions 11

Analytical Chem Soil HW Solutions 11 - w LL 65% The...

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11 Mass of tin empty, g (m t ) 18.2 19.1 17.7 18.6 Mass of tin + sample wet, g (m s +m w +m t ) 51.5 45.5 50.7 43.4 Mass of tin + sample dry, g (m s +m t ) 37.8 35.6 39.7 36.3 m s /m w , % 69.9 60.0 50.0 40.1 Cone penetration d, mm 25.0 14.2 8.5 5.1 ln(d) 3.219 2.653 2.14 1.63 A graph of w against ln(d) is plotted in Figure Q1.8. The liquid limit corresponds to a cone penetration of 20mm, i.e. ln(d) = 2.996. Reading from the graph,
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Unformatted text preview: w LL 65% The plasticity index PI = w LL- w PL = 65% - 22% PI 43%. By plotting the point w LL =65%; PI=43% on the chart given in main text Figure 1.15, the soil can be classified as a high plasticity clay (CH) . Figure Q1.8: water content against ln(cone penetration)...
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