Particle Size Analysis ASTM D422

13 Questions | Total Attempts: 108

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Particle Size Analysis ASTM D422

Particle Size Analysis ASTM D422


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Questions and Answers
  • 1. 
    The sedimentation cylinder shall be what capacity?
    • A. 

      1000 ml

    • B. 

      500 ml

    • C. 

      100 ml

  • 2. 
    The thermometer used for ASTM D422 shall be readable to what?
    • A. 

      0.1 c

    • B. 

      0.5 c

    • C. 

      1 c

  • 3. 
    The dispersing agent is made up of what?
    • A. 

      Sodium hydroxide

    • B. 

      Sodium bi-carbonate

    • C. 

      Sodium hexametaphospahte

  • 4. 
    The hygroscopic moisture shall be ______ to __________?
    • A. 

      10g, 15g

    • B. 

      20g, 25g

    • C. 

      110g, 120g

  • 5. 
    The hygroscopic moisture shall be dryed back to a constant weight at what temperature?
    • A. 

      110 +/- 5 c

    • B. 

      200 +/- 9 f

    • C. 

      110 +/- 5 f

    • D. 

      None of the above

  • 6. 
    The coarse sieve shall be perfomed on what fraction of the sample?
    • A. 

      Plus #4

    • B. 

      Plus #10

    • C. 

      Plus #16

    • D. 

      Plus #8

  • 7. 
    What would the weight of the sample be for the hydrometer if the material was sandy? 
    • A. 

      50 g

    • B. 

      100 g

    • C. 

      110 g

    • D. 

      200 g

  • 8. 
    How much dispersing agent is added to the sample for the soaking period?
    • A. 

      125 ml

    • B. 

      150 ml

    • C. 

      100 ml

    • D. 

      200 ml

  • 9. 
    How long does the sample soak in the dipersing agent?
    • A. 

      12 hours

    • B. 

      10 hours

    • C. 

      4 hours

    • D. 

      16 hours

  • 10. 
    After the sample is put into the 1000 ml beaker it gets turned upside down and back for how long?
    • A. 

      10 seconds

    • B. 

      60 seconds

    • C. 

      110 seconds

    • D. 

      30 seconds

  • 11. 
    The hydrometer bubble gets placed in the soil solution how long prior to taking the reading?
    • A. 

      5 to 10 seconds

    • B. 

      10 to 25 seconds

    • C. 

      1 minute

    • D. 

      1 to 2 minutes

  • 12. 
    The thermometer is placed in suspension and the temperature recorded after each hydrometer reading.
    • A. 

      True

    • B. 

      False

  • 13. 
    What sieve is the sample washed after the final hydrometer reading?
    • A. 

      #40

    • B. 

      #10

    • C. 

      #200

    • D. 

      #100