Hydro lab manual 2013 - Copy

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Unformatted text preview: 10 and D30 from your particle size distribution graph. Where: D60 = grain diameter (mm) corresponding to 60% passing, D10 = grain diameter (mm) corresponding to 10% passing, and D30 = grain diameter (mm) corresponding to 30% passing by weight 3. Compute Cc and Cu for the hydrometer soil tested. 4. Determine percentage gravel, sand, silt and clay using the Unified Soil Classification system, as applicable. *Utilize lecture notes and Table 9 provided. Questions The following is a list of questions (to be considered) as a guideline for information/data that should be incorporated into your lab report. 1. What equipment and/or method were used to perform tests and obtain results? 2. Details of specimen preparation, such as wet or dry – refer to ASTM D422 test procedures and appendices – as applicable. 3. Include a graph of the percent passing versus the log of particle size in mm. 4. What were the values you determined, as in; , Hcf, D60, D10, D30, Cc and Cu? 5. What was the soil type tested according to the Unified Soil Classification System – what is the soil group symbol, and what does the symbol mean? 6. What were the percentages determined in pt. 4 of the Results/Reporting section? 7. Was the soil well graded, poorly graded, or gap graded by analyzing the graph? 8. Were there any errors/complications in the testing completed? Selected References 1. Das, B.A., 2010, Principles of Geotechnical Engineering, Cengage Learning Winter 2013 10 CIVE 153 – Earth Engineering Hydrometer Analysis Department of Civil and Environmental Engineering 2. Liu, C., and Evett, J.B., 2003, Soil Properties, 5th Edition, Prentice Hall 3. ASTM D 6913 ‐ Particle Size Distribution of Soils Using Sieve Analysis 4. Knight, M.A., and Mazhar, M., 2011, CIVE 153 Coarse Grain Soil Analysis, Sieve and Hydrometer, Dubai Campus Lab Manual 5. Holtz, R.D., Kovacs, W. D., and Sheahan, T. C., 2011, An Introduction to Geotechnical Engineering, 2nd Edition, Prentice Hall Tables 1 to 9: Table 1: Hygroscopic Moisture Content Data: Winter 2013 11 Department of Civil and Environmental Engineering CIVE 153 – Earth Engineering Hydrometer Analysis Weight (g) Mass of Pan A Air dried Weight + Pan A Oven dried Weight +Pan A Mass of Air dried Soil Mass of Oven dried Soil Mass of Water Hygroscopic water content (%) ( ) Hygroscopic Correction Factor (Hcf) Table 2: Sieve Analysis – Coarse Material Sieve Size 4.75 mm 2.00 mm Non‐ Cumulative Weight (g) Cumulative Weight (g) %Retained %Passing Table 3: Sieve Analysis – Fine Material Sieve Size Non‐ Cumulative Weight (g) Cumulative Weight (g) 850 µm 425 µm 250 µm 150 µm 75 µm %Retained %Passing Table 4a: Hydrometer Test Sample Data: Winter 2013 12 Department of Civil and Environmental Engineering CIVE 153 – Earth Engineering Hydrometer Analysis Mass of total hydrometer sample (g) (hs) Specific Gravity of Solids (Gs) Dispersing Agent Hydrometer No. Temperature °C Composite Correction Mass of Hydrometer sample tested (M) Table 4b: Hydrometer Test Data: Date Time Elasped Time (min) Actual Hydro Reading Composite Corrected Hydro Reading (R) L K from Table 5 from Table 6 D (mm) CT from Table 7 a from Table 8 Corrected Hydro Reading Rc % Finer % Finer P PA Table 5: Values of Effective Depth Based on Hydrometer and Sedimentation Winter 2013 13 CIVE 153 – Earth Engineering Hydrometer Analysis Department of Civil and Environmental Engineering Cylinder of Specific Sizes Winter 2013 14 Department of Civil and Environmental Engineering CIVE 153 – Earth Engineering Hydrometer Analysis Table 6: Values of K for Use in Equation for Computing Diameter of Particle In Hydrometer Analysis Winter 2013 15 CIVE 153 – Earth Engineering Hydrometer Analysis Department of Civil and Environmental Engineering Table 7: Temperature Correction Factors CT Table 8: Correction Factors a for Unit Weight of Solids Winter 2013 16 CIVE 153 – Earth Engineering Hydrometer Analysis Department of Civil and Environmental Engineering Table 9: Unified Soil Classification System (Based on Material Passing 75 µm Sieve) Winter 2013 17...
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This document was uploaded on 03/30/2014 for the course CIVE 153 at Waterloo.

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