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<< Click to Display Table of Contents >> Data & Results Tab |
  
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<< Click to Display Table of Contents >> Data & Results Tab |
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This tab is used to specify the data and results of the test.
The following can be entered and displayed on this tab:
CBR Data
Specimens can be added and deleted using the Add Specimen and Delete Specimen buttons. The measurements for each specimen may consist of the information below depending on the options selected on the previous tab.
Penetration: This is the standard penetration for the reading, taken from a predefined list of standard penetrations and stress.
Standard Stress: This is the standard stress for the reading, taken from a predefined list of standard penetrations and stress.
Dial Reading: This is used to specify the dial reading for the standard penetration. If no proving ring was specified on the previous tab it is the load.
Load: This is the calculated load. If a proving ring was specified, it is obtained by subtracting the ring correction from the reading and then multiplying by the ring constant.
Stress: This is the calculated stress, obtained by dividing the load by the piston area.
Corrected Stress: This is the calculated corrected stress. In some cases the initial penetration occurs without a proportional increase in the resistance to penetration and the stress-strain curve will have a concave upward appearance at the start. The corrected stress is obtained by adjusting the location of the origin of the stress-strain curve by extending the straight-line portion of the curve downward until it intersects the abscissa.
Swell Data
Swell data readings can be added and deleted using the Add Reading and Delete Reading buttons. Each swell reading consists of the following information:
Date/Time: This is used to select the date and time of the reading. The first reading will mark the start of the test.
Days: This is the calculated number of days since the start of the test.
Gauge Reading: The is used to specify the gauge reading
Swell: This is the calculated swell equal to the difference between this gauge reading and the initial gauge reading.
Swell (%): This is the calculated swell as a percentage of the initial height.
Results
Swell: This the calculated swell as a percentage of the initial height at the end of the swell test.
CBR at 0.10 in (2.54 mm): This is the calculated CBR at a penetration of 0.10 in (2.54 mm).
CBR at 0.20 in (5.08) mm: This is the calculated CBR at a penetration of 0.20 in (5.08 mm).