Consol_requirements

# Consol_requirements - 3 Determine void ratio change from...

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

CE 140 Soil Mechanics Laboratory Required Elements for 1-D Consolidation Test Test Specification Æ ASTM D2435 Introduction, Procedure and Discussion 1. Description of oedometer cell and test equipment. 2. Provide answers to the following two questions: a) What two phenomena can be evaluated during a 1-D consolidation test on clays? b) How are these parameters used in geotechnical engineering and design (include examples)? 3. Describe what happens to a soil sample from start to finish of a load cycle. In particular, link the dial reading versus time behavior to the excess pore pressure within the sample. Results of Analysis (using the data provided) 1. Do not provide me with the raw data included in the Excel file. 2. One plot of dial reading versus time for each load cycle (your choice of log 10 scale or square root of time scale). This will result in 19 individual graphs. These must be included in your appendix, showing your calculation lines and resulting t and d readings.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3. Determine void ratio change from each plot, as well as coefficient of consolidation, c v , for each load cycle. Tabulate the data obtained from each plot. 4. Plot e-log σ vc ’ (void ratio versus vertical effective consolidation stress). 5. Determine maximum effective past pressure ( σ p ’). Show the graphical construction on an e-log σ vc ’ graph. Also find Cc and Cs from this graph. Estimate the overconsolidation ratio, OCR, using the current effective vertical stress of 100 kPa. 6. Discuss your results and compare the consolidation test results to published data. 7. Appendices: All calculations. Show ALL formulas if using Excel. Reminders: • Use consistent units and be sure to label all graphs and tables clearly. • Sharing/copying of plots, figures, text, and calculations will not be tolerated and will result in a grade of zero for the lab, along with reporting to the university. Do your own work!...
View Full 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