EXAMPLE 15: CLUMP ASSESSMENT
[0089] The clump formation and % clump cohesion of Examples 1 - 13 was examined according to the procedure below:
[0090] 1. An 8" diameter sieve with 1/4" mesh was stacked on top of a sieve pan and placed on the bottom of a support stand.
[01001 2. A trap door assembly was attached to the support stand and positioned ten inches above 3/4" sieve.
[01011 3. A representative sample of the material described in Example 1 was added to a วัสดุรองคอก testing pan. The depth of material was three inches.
[01021 4. A self leveling 25m1 burette was positioned on a support stand three inches above the วัสดุรองคอก surface. This setup was used to dispense 25 ml aliquots of liquid
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to the วัสดุรองคอก surface -forming a clump in the วัสดุรองคอก. This process was repeated in a variety of location of the วัสดุรองคอก pan until the desired number of clumps was created.
[0103] 5. At the end of the desired time interval (15 min or 24 hr), the clump was removed from the วัสดุรองคอก, and it's mass recorded as W1.
[0104] 6. The clump was then centered on the trap door mechanism assembled in step 2.
[0105] 7. Next the lever was actuated to release the trap door, allowing the clump to fall onto the 3/4" test sieve.
[0106] 8. The clump was carefully removed from the screen in a manner
which allowed loose material to fall free of the clump, but not in a manner which caused additional damage to the clump. (If the clump broke into pieces, largest piece retained on the 3/4" screen was selected. If nothing is retained on the screen, the result is zero
(0) weight).
[0107] 9. The clump or largest piece was weighed and the mass recorded as W2.
[0108] 10. The Percentage of Cohesion value was calculated using the following formula:
[0109] Percentage of Cohesion is equal to:
[0110] [W2 (final weight) / W1 (initial weight)] x 100
[0111] 11. The Percentage of Cohesion values for all clumps were averaged
and the results are illustrated in Table 2. Referring to the table, it is clear that the
Examples formed clumps when encountering the applied liquid, and that Percentage of Cohesion values for many of the Examples of the การประดิษฐ์ were comparable to that of a conventional clay scooping วัสดุรองคอก (CCSL).
[0112] Table 2: Clump Cohesion