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TEST METHOD AND DISCUSSION FOR THE PARTICLE SIZE …
TEST METHOD AND DISCUSSION FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD GEOTECHNICAL TEST METHOD GTM-13 Revision #2 AUGUST 2015 EB 15-025 Page 1 of 32 GEOTECHNICAL TEST METHOD : TEST METHOD AND DISCUSSION FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD GTM-13 Revision #2 STATE OF NEW YORK DEPARTMENT OF TRANSPORTATION GEOTECHNICAL ENGINEERING BUREAU AUGUST 2015 EB 15-025 Page 2 of 32 TABLE OF CONTENTS PART 1: TEST METHOD FOR THE PARTICLE SIZE ANALYSIS OF SOILS BY HYDROMETER METHOD ..3 1. Scope ..3 2. Apparatus and Supplies ..3 3. Preparation of the Dispersing Agent ..4 4. Sample Preparation and Test Procedure ..4 5. 6. Quick Reference Guide ..12 APPENDIX ..14 A. Determination of the Composite Correction for Hydrometer Readings ..14 B. Temperature Correction Value (Mt) ..15 C. Value for Viscosity of Distilled Water, "n", in Poises ..17 D. Determination of Effective Length "L" ..19 E. Worksheets ..23 Hydrometer Calibration Worksheet.
3.1 Prepare a stock solution of the dispersing agent as follows: 3.1.1 Add the dispersing agent to the distilled water in the proportion of 1.4 oz. (40 g) of sodium metaphosphate to 1.1 qt. (1000 mL) room temperature distilled water. 3.1.2 Mix the solution using the magnetic stirring apparatus for 1 hour or until all
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