Analytical Chem Soil HW Solutions 74

# Analytical Chem Soil HW Solutions 74 - Vt = Vs Vv e = Vv/Vs...

This preview shows page 1. Sign up to view the full content.

74 V t = V s + V v ; e = V v /V s ; so V t = V s .(1 + e) = V s .v and Δ V t = V s . Δ v The first sample at a cell pressure of 300 kPa (q = 0) has a total volume V t given by V t = ( π × 38 2 mm 2 /4) × 80 mm = 90729 mm 3 It is saturated, so e = w.G s (main text Equation 1.10); w = 0.572 and G s = 2.61 so e = 1.493 Hence the volume of solids V s = V t /(1 + e) = 90729 mm 3 ÷ 2.493 = 36393.5 mm 3 (constant) When the cell pressure was increased to 320 kPa, the change in total volume Δ V t was -618 mm 3 giving a change in specific volume Δ v of –618 mm ÷ 36393.5 mm = -0.017. The slope of the isotropic normal compression line on a graph of v against lnp' is - λ , where λ = - Δ v/ Δ (lnp'). Hence λ = 0.017 ÷ (ln320-ln300) = 0.017/0.0645 λ = 0.26 The same change in specific volume occurs on swelling from p' = 320 kPa to p' = 229 kPa, which is along a swelling line on the graph of v against lnp' which has slope -
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern