Hydrometer

# Hydrometer - Particle Size Analysis Hydrometer Method...

This preview shows pages 1–4. Sign up to view the full content.

Particle Size Analysis - Hydrometer Method Vanessa Barela Student ID# 900240959 Group Members: Christine Dwyer, Anthony LeBaron, Sarah Gonzales, Phil Simmons Date of Test: Feb 1, 2007, Feb 2, 2007 and Feb 5, 2007 Date Submitted: Feb 24, 2007

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Introduction The Hydrometer Method of analyzing soil is used to determine the size distribution of particles that pass through the #200 sieve and have diameters from 0.001 mm to 0.075 mm. This method is used when after a basic sieve analysis, there is more than 20% passing the #200 sieve. This allows for a better analysis of the soil and classification. Theory The Hydrometer Method is based on Stokes’ Law, which helps determine the velocity of particles; each particle has a specific gravity at which it falls based on gravitational forces, viscosity, and the particle size. The basic Stokes’ Law, which assumes that a sphere is: 2 2 9 2 - = D G G v f s η [1] When: v = particle velocity G s = specific gravity of particles G f = specific gravity of solution η = fluid viscosity D = particle diameter t = time elapsed in minutes 2
For the Hydrometer Analysis Stokes’ Law must be changed to determine the diameter of the particles, see Equation 2.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
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