lab3 - CE 497 Section 5 Soil Testing Lab #3 Hui Fan...

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CE 497 Section 5 Soil Testing Lab #3
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Hui Fan 2/5/2009
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INTRODUCTION: This experiment concerns three common test performed on soils: a sedimentation test to determine a particle size distribution and Liquid / Plastic limit test to determine two of the Atterberg limit. The objectives of this experiment are to perform sedimentation test to find a particle size distribution and perform Atterberg tests to find liquid limit & plastic limit. PROCEDURE: For the sedimentation test, transferred the soil-dispersion agent slurrg sample by stirred to the sedimentation cylinder and filled the cylinder with water up to 1000ml. Placed the hydrometer into the cylinder and record the value in 15sec, 30sec, 45sec, 1min, 1.5min, 2min, 3min, 4min, 5min, 7min, 10min, 15min, 30min, and 60min. For the liquid limit test, obtained sample from the LL container and from a groove in the brass cup. Lift the drop the brass cup using hand crank, recorded the total number of revolution when closed length of groove becomes 13mm. Took 5g of the sample and weighted the weight. Three samples were taken from three different range of total revolution number, which are 15-21, 22-28, and 29-35. For the plastic limit test, obtained sample form the PL container and roll a certain
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lab3 - CE 497 Section 5 Soil Testing Lab #3 Hui Fan...

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